• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention provides a light ribbon, wherein the light ribbon comprises an outer envelope, an inner envelope and a light emitting element, the light emitting element comprises a substrate and an LED light source, wherein the inner envelope is provided with a light output through which the light of the LED light source passes directly. Cutting marks are arranged between the light outputs, and the side facing the LED light source of the outer envelope transmits the light. The invention makes it easier for the user to cut the light ribbon and considerably prolongs the life of the light ribbon.
    公开号:FR3071585A3
    申请号:FR1858828
    申请日:2018-09-26
    公开日:2019-03-29
    发明作者:Huabo Liu；Xiaoping Li
    申请人:Guangdong OML Technology Co Ltd；
    IPC主号:
    专利说明:

    BAND OR LIGHT RIBBON
    Field of the invention
    The present invention relates to the field of lighting technologies, more particularly a light strip.
    Context of the invention
    Thanks to their characteristics of softness, clarity, purity of colors and ease of installation, LED light ribbons are very widely used in the decoration of outlines of buildings, steps, stands, bridges, hotels, in decorative lighting for karaoke, billboards, cartoons for animations, scripts and paintings, and so on. When using a flexible light ribbon, it is often necessary to adjust the length of the ribbon by cutting the ribbon to meet different requirements on various occasions, but the cut can easily destroy the LEDs placed inside the ribbon light and harm to his use. To facilitate cutting, the light ribbon is usually accompanied by a cut mark, the cut mark is generally arranged on the side opposite to the light source, and the cut mark is seen through a light transmission layer of the light source. bright ribbon to allow cutting.
    As the use of LED light ribbons is becoming more and more common, ribbons of different shapes and colors are needed. At present, a cutting mark is barely visible through a light transmission layer because the light ribbon is not transparent, making it difficult to cut the light ribbon properly.
    Chinese patent CN206669424U discloses a flexible LED light strip having a cutting mark and an easy to cut LED light strip, in which the cut mark is placed on the side of the printed circuit board of the main body of the LED light ribbon opposite to an LED light source, and the cutting mark is further provided with light-transmitting holes, so that the light emitted from the LED light source on the other side of the light ribbon passes through the light-transmitting holes to get to the other side of the light strip, or the light from an external light source on one side passes through the light transmission holes to get to the other side of the light ribbon, a user can thus identify the cutting site in a precise manner, which avoids damaging the ribbon light by a handling error and improves the quality of the cut.
    In the aforementioned patent, the cutting mark is placed on the printed circuit board of the light strip, so that the cutting mark is only visible if the lamp is lit or if there is an external light source which is not practical to use. In addition, the main body of the light strip must be provided with an observation light transmission layer, which not only increases the manufacturing cost, but also causes a light leak from the layer transmission of observation light, thereby reducing the light output of the light ribbon.
    In addition, some LED light ribbons are now equipped with several LED chips, the LED chips are all connected in series on a flexible light panel of the LED light strip. If one or more of these LED chips are damaged, the entire LED ribbon will not work due to disconnection, and the entire LED ribbon must be repaired or replaced, which is inconvenient for the user. Summary of the invention
    The technical difficulty to be solved by the present invention is to provide a strip of light with a simple structure, easy to cut, easy to handle and convenient, having a long life, improved durability and requiring little maintenance.
    The technical difficulty to be solved by the present invention is to provide a light strip providing uniform illumination and having overall a pleasant visual appearance.
    The technical difficulty to be solved by the present invention is to provide a practical light tape to install and manufactured in an automated manner.
    To solve the aforementioned technical difficulties, the present invention provides an LED light strip which comprises an outer envelope, an inner envelope installed in the outer envelope, and a light emitting element disposed in the inner envelope. The light emitting element comprises a substrate and a plurality of LED lighting modules placed on the substrate, each LED lighting module is connected in parallel with the other modules, each LED lighting module comprises at least one LED light source. The inner envelope is provided with a light output through which light emanating from the LED light source can exit directly, a cut mark is provided between the light outputs and placed accordingly between the LED lighting modules. parallel, and the surface of the outer envelope facing the LED light source transmits light.
    The LED lighting modules also include a protection circuit, the protection circuit is connected in parallel with at least one LED light source, when the LED light source is disconnected, the protection circuit is activated to maintain the operation of the light emitting element.
    Preferably, the inner envelope is provided with a cavity and a slot, the slot is located in a lower part of the inner envelope and is connected to the cavity, the cavity is attached to the light outlet, and the light emitting element is disposed in the cavity.
    More preferably, the upper surface of the light transmitting layer has many curved projections, and many small holes are on the side facing the LED light source of the light transmitting layer.
    More preferably, the diameter of each curved projection is D, the distance between the crests of two adjacent curved protrusions is R, the diameter of the small hole is d, and the distance between two adjacent small holes is r, the distance between the source of LED light and the curved protrusion is L, where arctan (Rr) / f = arccos (Dd) / f.
    More preferably, the light emitting element further comprises two conductive ribbons, the conductive ribbons are disposed on the substrate and are on both sides of the LED lighting module, connecting each LED light module in parallel.
    More preferably, the conductive strip is a copper wire or a copper plate, the conductive strip being fixed to the substrate by soldering.
    More preferably, the light transmission layer is melt extruded by a composition of at least two types of resins comprising a light diffusion layer having a rib structure, the light diffusion layer having a thickness of 200 μm to 400 μm.
    More preferably, the protection circuit comprises a Zener diode which is connected in antiparallel to at least one LED light source, the Zener diode having a stabilized voltage greater than the terminal voltage when at least one LED light source connected in parallel. parallel to the Zener diode works.
    More preferably, the light emitting element comprises at least two LED lighting modules, the LED lighting module is composed of at least one LED light source, and the protection circuit comprises a regulated triode, and the terminal A of the triode is respectively connected to a cathode of a first LED light source and to an anode of another LED light source, terminal B of the triode is connected to an anode of an LED light source , and terminal C of the triode is connected to a cathode of another LED light source.
    More preferably, the light emitting element also comprises a current limiting circuit which is connected in series with the LED light source. The present invention offers the following advantages: 1. The LED light strip according to the present invention is provided with a simple structure, a user can directly see the cut mark on the inner envelope through the light transmission layer. At the time of installation, it is sufficient for the user to cut the light strip according to the cut mark to use it, since the cutting mark is arranged correspondingly between the LED lighting modules in parallel, the circuit will not be affected, and the lighting will be guaranteed. The LED light strip also includes a protection circuit, when one or some of the LED chips are damaged, the protection circuit replaces the damaged LED chip to conduct electricity, so that the light strip according to the present invention can continue to 'be excited and enlighten, which greatly extends the life and durability of the ribbon light. 2. The light transmission layer according to the present invention uses the principle of ommatidia. Each curved projection serves as a microlens, and a plurality of curved protrusions serve as a microlens array for light radiation. Moreover, thanks to the presence of several small holes on the side of the light transmission layer facing the LED light source, each small hole acts as a small eye of a compound eye while being independent of the others, so that the light that passes through the different small holes does not show interference from one hole to another. The light transmission layer according to the present invention diffuses the light emitted from the LED light source, which considerably improves the light output and the uniformity of the light strip, makes the color of the light emitted by the light strip more uniform when it is projected onto the object and prevents the light from discolouring or staining, providing overall a more pleasant visual aspect of the light ribbon.
    In the LED light ribbon provided by the present invention, the conductive ribbon is disposed on the substrate to form a parallel link of each LED illumination module, an external power supply is electrically connected to the substrate, and the conductive ribbon and the substrate are integrated structures that can be automatically installed using hardware, making their installation labor-saving and more efficient.
    Brief description of the drawings
    FIG. 1 represents a structure diagram of an LED light strip according to the present invention.
    Figure 2 shows a stereoscopic exploded view of an LED light strip according to the present invention.
    Fig. 3 shows a structure diagram of a light emitting element installed in an inner casing according to the present invention.
    Figure 4 shows a circuit diagram of an LED light strip according to the present invention.
    Fig. 5 shows a diagram of an inner envelope and a light emitting element according to an embodiment of the present invention.
    Fig. 6 shows a structure diagram of a light emitting element according to an embodiment of the present invention.
    Detailed Description of the Illustrated Embodiments
    To further illustrate the present invention in various aspects of its purpose, technical principle and advantages, we will further describe the present invention in detail with reference to the accompanying drawings.
    Referring to FIGS. 1 to 3, the present invention provided an LED light strip which included an outer casing 1, an inner casing 2 installed in the outer casing 1, and a light emitting element 3 disposed in the inner casing 2. The light emitting element 3 had a substrate 31 and several LED lighting modules fixed on the substrate 31, each LED lighting module was connected in parallel with the other modules, each LED lighting module included at least one LED light source 32. The inner casing 2 is provided with a light output 21 through which light emanating from the LED light source 32 can exit directly, and the light output 21 is provided with a cutting mark 22 located between the modules. LED lighting in parallel, the surface of the outer casing 1 facing the LED light source 32 transmits the light.
    More specifically, the inner casing 2 was provided with a cavity 23 and a slot 24, and the slot 24 was located in the lower part of the inner casing 2 and connected to the cavity 23, the cavity 23 was attached. at the light output 21, and the light emitting element 3 was disposed in the cavity 23. The present invention enlarged the volume of the cavity 23 by the use of the slot 24, thus facilitating the placement of the substrate 31 in the cavity 23 and the insertion of the LED light source 32 in the light output 21. According to the prior art, the inner envelope of the light ribbon has at least one transparent side, and as the LED light source is arranged in the inner envelope, the light emitted by the LED light source must pass through the inner envelope. In contrast, in the present invention the light emanating from the LED light source was emitted from the outer envelope directly through the light output without passing through the inner envelope, hence the inner envelope according to the present invention. could be designed in various colors. In addition, the opaque inner envelope could also protect the substrate, making the ribbon more pleasant for the eye and broadening its scope.
    In addition, the inner casing 2 was also provided with two wire slots 25, and the wire slots 25 were provided with wires electrically connected to the substrate 31, and the wires formed a parallel connection for each LED lighting module. The wire slots 25 were located below the cavity 23 and arranged symmetrically. In addition, the wires were used to form an electrical connection between the external power supply and the substrate 31.
    More specifically, the substrate 31 was a flexible printed circuit board, the substrate 31 was provided with several LED light sources 32, and the LED light sources 32 were convex on the substrate 31 and arranged in a row. The inner casing 2 was encapsulated by the injection molding enclosing the substrate 31 therein, and the LED light source 32 protruded from the light outlet 21 or the light outlet 21, and the light emanating from the LED light source 32 was emitted directly through the light transmitting layer of the outer casing 1 without passing through the inner casing 2, thus improving the luminous efficiency of the light ribbon. The cutting mark 22 was formed at the moment when the inner casing 2 was injection molded, or made after formation of the inner casing 2, the cutting mark 22 could be arranged on the surface of the inner casing 2 or the inner casing 2. along the inner envelope 2. In addition, the shape of the section mark 22 could be a circle, a triangle, an ellipse, a star, a polygon, a line, or the like.
    The LED light strip according to the present invention had a simple structure, it was sufficient for the user to cut it according to the cut mark to use it, since the cutting mark was arranged correspondingly between the lighting modules LED in parallel, the circuit would not be affected by the cutting, and the lighting would be guaranteed. In addition, the LED lighting module according to the present invention was equipped with a Zener diode for stabilizing the voltage of the LED lighting module and ensuring the proper operation of the light strip once cut.
    Since the light emitted by the LED light source 32 must pass through the light transmission layer, in order to improve the luminous uniformity of the LED light strip, the light transmission layer has been melt extruded by a composition of at least two types of resins comprising a light diffusion layer having a rib structure, the light diffusion layer having a thickness of 200 μm to 400 μm.
    Preferably, the difference in refractivity of at least two resins was from 0.01 to 0.06.
    Preferably, at least two resins were incompatible, and at least one of the resins was a polyolefin-based resin, the polyolefin-based resin being a polyethylene resin, a polypropylene-based resin, or a resin-based one. cyclic polyolefin.
    Preferably, at least two resins are incompatible, two of the resins being polyolefin-based resins, and the polyolefin-based resin being a polyethylene-based resin, a polypropylene-based resin, or a cyclic polyolefin resin. .
    In order to increase the transmittance of the light transmission layer of the outer casing 1, the light was concentrated on the surface to prevent light leakage from the side walls of the light ribbon, and the side faces of the outer casing 1 are opaque and made of an opaque material.
    As we see in FIG. 4, the present invention included a protection circuit 4 which was connected in parallel with at least one LED light source 32, when the LED light source 32 was disconnected, the protection circuit 4 was activated. to maintain the functioning of the substrate. Indeed, when one or more of the LED light sources 32 on the light ribbon were damaged, the protection circuit 4 replaced the LED light sources 32 damaged to conduct electricity, so that the light ribbon according to the present invention could continue to be excited and illuminate, which greatly prolonged the life and durability of the ribbon light.
    The protection circuit 4 of an embodiment, shown in FIG. 4, included at least one Zener diode which was connected in antiparallel to at least one LED light source 32, the Zener diode had a stabilized voltage greater than the voltage terminal when at least one LED light source 32 connected in parallel with the Zener diode was operating. There were two Zener diodes in Figure 4, as the length of the light ribbon increased, there could be more Zener diodes. Each Zener diode was in antiparallel connection with three LED light sources 32, the regulated voltage of the Zener diode being Ud, the terminal voltage of the three LED light sources 32 being Ua, and Ud being slightly higher than Ua. Since Ua was less than Ud, the Zener diode was in the non-conductive state, when any LED light source 32 was damaged, the circuit in parallel with the Zener diode was in the open state, at the time of its occurrence. the voltage of the zener diode was equal to the mains voltage, as the mains voltage was higher than the regulated voltage Ud of the zener diode, the zener diode was activated in the opposite direction, the zener diodes and the light sources The remaining 32 LEDs were then connected in series to form a loop, and the remaining 32 LED light sources were still functional, which reduced their maintenance frequency and increased their durability.
    In addition, the present invention furthermore included a current limiting circuit (see FIG. 4), the current limiting circuit was connected in series with the LED light source 32, here the current limiting circuit was a resistance current limiting resistance, and the current limiting resistor could reduce the current flowing through the LED light source 32 to ensure continuous and safe operation of the LED light source 32.
    In another preferred embodiment of the present invention, as seen in FIG. 5, the upper surface of the light transmitting surface according to the present invention has many curved protrusions 26, and many small holes 27 were located therein. on the side facing the LED light source 32. Specifically, the diameter of each curved projection 26 was D, the distance between the crests of two adjacent curved protrusions 26 was R, the diameter of the small hole 27 was d, and the distance between two adjacent small holes 12 was r, the distance between the LED light source 32 and the curved projection 26 was L, where arctan (Rr) / f = arccos (Dd) / f. The light transmission layer of the preferred embodiment used the principle of ommatidia. Each curved projection served as a microlens, and several curved protrusions served as a microlens array for light radiation. Moreover, thanks to the presence of several small holes on the light transmission layer side facing the LED light source 32, each small hole each small hole acted as a small eye of a compound eye while being independent of other, so that the light that passed through the different small holes did not show interference from one hole to another. The light transmission layer according to the present invention diffused the light emitted by the LED light source 32, which considerably improved the light output and the uniformity of the light strip, made the color of the light emitted by the light strip more uniform when it was projected onto the object and prevented the light from discolouring or staining, providing overall a more pleasant visual aspect of the ribbon light.
    In another preferred embodiment of the present invention, as we see in FIG. 6, the light emitting element 3 further comprises two conductive ribbons 33 disposed on the substrate 31 and lying on both sides of the module. LED lighting, connecting each LED lighting module in parallel. The conductive strip 33 was a copper wire or a copper plate, but not limited thereto. In the present invention, the conductive strip 33 could also be made of other conductive metals. The conductive ribbon 33 was attached to the substrate 31 by welding together with the substrate 31 as a solid structure. At the time of installation, it is sufficient to mount the substrate 31 in the inner casing 2, whereas the preceding method requires manual insertion of the copper wire into the inner casing 2 to form an electroconductive connection with the substrate 31, which is inefficient for manufacturing. In addition, the conductive strips 33 were used to form an electrical connection between the external supply and the substrate 31.
    The foregoing descriptions are only preferred embodiments of the present invention, the scope of the present invention is not limited thereto, and therefore the equivalent modifications to the claims of the present invention are always in accordance with the present invention. within the scope of the present invention.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. A light strip, wherein the light strip comprises an outer envelope, an inner envelope installed in the outer envelope, and a light emitting element disposed in the inner envelope, the light emitting element comprises a substrate and a plurality of modules of LED lighting placed on the substrate, each LED lighting module is connected in parallel with the other modules, each LED lighting module comprises at least one LED light source, the inner envelope is provided with a light output whereby the light emanating from the LED light source can exit directly, a cut mark is provided between the light outputs and placed accordingly between the LED lighting modules in parallel, and one side of the outer envelope facing at the LED light source is a light transmission layer; according to which the light strip further comprises a protection circuit, the protection circuit is connected in parallel with at least one LED light source, when the LED light source is disconnected, the protection circuit is activated to maintain the operation of the light emitting element.
    [2" id="c-fr-0002]
    2. The light tape according to claim 1, wherein the inner envelope is provided with a cavity and a slot, the slot is located in a lower portion of the inner envelope and is connected to the cavity, the cavity is attached to the light output, and the light emitting element is disposed in the cavity.
    [3" id="c-fr-0003]
    The light tape of claim 1, wherein an upper surface of the light transmitting layer has a curved projection, and a small hole is on the side facing the LED light source of the light transmitting layer. .
    [4" id="c-fr-0004]
    The light strip of claim 3, wherein a diameter of a curved projection is D, a distance between the crests of two adjacent curved protrusions is R, a diameter of the small hole is d, and a distance between two adjacent small holes is r, a distance between the LED light source and the curved projection is L, and characterized in that arctan (Rr) / f = arccos (D-d) / f.
    [5" id="c-fr-0005]
    The light strip of claim 1, wherein the light emitting element further comprises two conductive ribbons, the conductive ribbons are disposed on the substrate and located on both sides of the LED light module, connecting the light modules. LED in parallel.
    [6" id="c-fr-0006]
    The light tape of claim 5, wherein the conductive strip is a copper wire or a copper plate, and the conductive strip is attached to the substrate by soldering.
    [7" id="c-fr-0007]
    The light tape of claim 1, wherein the light transmitting layer comprises a light scattering layer having a rib structure, the light scattering layer having a thickness of 200 μm to 400 μm.
    [8" id="c-fr-0008]
    The lightning tape according to claim 1, wherein the protection circuit comprises a Zener diode which is antiparallel connected to at least one LED light source, the Zener diode has a stabilized voltage greater than the terminal voltage when at least an LED light source connected in parallel to the Zener diode operates.
    [9" id="c-fr-0009]
    The light ribbon according to claim 1, wherein the light emitting element comprises at least two LED lighting modules, the LED lighting module is composed of at least one LED light source, and the protection circuit. comprises a regulated triode, and a terminal A of the triode is respectively connected to a cathode of an LED light source and to an anode of another LED light source, a terminal B of the triode is connected to an anode of an LED light source, and a terminal C of the triode is connected to a cathode of another LED light source.
    [10" id="c-fr-0010]
    The light strip of claim 1, wherein the light strip further comprises a current limiting circuit which is connected in series with the LED light source.
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    同族专利:
    公开号 | 公开日
    GB2568384A|2019-05-15|
    US10451260B2|2019-10-22|
    CN207394465U|2018-05-22|
    CA3018742C|2020-08-18|
    FR3071585B3|2020-01-10|
    GB2568384B|2019-11-06|
    DE202018105499U1|2018-10-19|
    GB201815656D0|2018-11-07|
    US20190093870A1|2019-03-28|
    CA3018742A1|2019-03-26|
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    法律状态:
    2019-09-26| PLFP| Fee payment|Year of fee payment: 2 |
    2020-07-20| PLFP| Fee payment|Year of fee payment: 3 |
    2021-08-26| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201721244900.6|2017-09-26|
    CN201721244900.6U|CN207394465U|2017-09-26|2017-09-26|A kind of high striped light bar of durability|
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