CN109915741B - Double-drive lamp structure - Google Patents
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- CN109915741B CN109915741B CN201711295152.9A CN201711295152A CN109915741B CN 109915741 B CN109915741 B CN 109915741B CN 201711295152 A CN201711295152 A CN 201711295152A CN 109915741 B CN109915741 B CN 109915741B
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Abstract
The invention provides a dual-drive lamp structure, which comprises a lamp body, a high-power lighting circuit structure and an emergency lighting circuit structure, wherein a driving box is arranged on the back surface of the lamp body; the emergency lighting circuit structure comprises an auxiliary substrate, a plurality of emergency LED light sources and an emergency driver. The high-power lighting circuit structure and the emergency lighting circuit structure are integrated in the same lamp structure, so that the high-power lighting circuit structure is convenient to install, and meanwhile, the cost can be reduced; and a main driver is arranged to drive each main LED light source for illumination; the emergency driver is arranged to drive each emergency LED light source so as to realize emergency lighting; because set up main drive and emergency drive respectively, when the main drive used, emergency drive did not use, can not exert an influence to emergency drive, was convenient for carry out emergency lighting, the maintenance of being convenient for when the main drive damaged.
Description
Technical Field
The invention belongs to the field of lamps, and particularly relates to a dual-drive lamp structure.
Background
In order to save energy and prolong the service life, the lighting equipment in areas such as factories, squares and the like generally uses LED lamps with high functional rate so as to provide enough brightness for a wider area. The high-functionality LED lighting lamp with LEDs (Light Emitting diodes, chinese name) generally has a total power of more than 80 w, and of course, for a high-power LED lamp, the power of each LED Light source used in the high-power LED lamp is generally more than 1 w. The high-power LED lamp generally comprises a lamp body, a substrate arranged in the lamp body, a plurality of LED light sources arranged on the substrate and a driver for driving each LED light source, wherein the driver is electrically connected with the substrate. The back of the lamp body is generally provided with a driving box for accommodating the driver and connecting an external power supply. Because the high-power LED lamp has large heat productivity, a lamp body is generally provided with a radiating fin for radiating; however, the heat still has a great influence on the driver in the driving box, and the driver itself generates heat when in operation, so that the driver of the high-power LED lamp is easier to damage relative to other components. However, in some key areas such as main corridors, stair passageways or positions corresponding to key equipment, continuous lighting is often required to be ensured, and meanwhile, when the lighting lamp is damaged, the lighting lamp can be maintained in time. Currently, to ensure continuous illumination, two methods are generally adopted: one way is to install a high-power LED lamp and an emergency lighting lamp in the same area, so that when the high-power LED lamp is damaged, the emergency lighting lamp can be used for emergency lighting, and the high-power LED lamp can be maintained in time; however, the structure needs to occupy a large space, needs to arrange circuits respectively, and uses two lamps, so that the cost is high and the installation is inconvenient. The other is that two drivers are arranged in a driving box of the high-power LED lamp, and the two drivers are used for respectively driving about half of the LED light sources so as to reduce the power of each driver and improve the service life, and when one driver is damaged, the other driver can continue to work; however, in order to ensure the illumination brightness, each LED light source needs to work, that is, two drivers generally work at the same time, and the working environments of the two drivers are similar, and the service lives of the two drivers are also similar, so that when the LED light source is used, the two drivers need to be maintained at the same time, the cost is high, and continuous illumination cannot be ensured.
Disclosure of Invention
The invention aims to provide a dual-drive lamp structure to solve the problem that continuous lighting and cost reduction and convenient installation cannot be both considered when a driver of a high-power LED lamp in the prior art is damaged and maintained.
In order to achieve the purpose, the invention adopts the technical scheme that: the dual-drive lamp structure comprises a lamp body, wherein a drive box is arranged on the back of the lamp body, and the dual-drive lamp structure also comprises a high-power lighting circuit structure and an emergency lighting circuit structure; the high-power lighting circuit structure comprises a main substrate arranged in the lamp body, a plurality of main LED light sources arranged on the main substrate and a main driver for driving each main LED light source, wherein the main driver is electrically connected with the main substrate, the main driver is arranged in the driving box, and the sum of the power of the main LED light sources is more than 80 watts; the emergency lighting circuit structure comprises an auxiliary substrate installed in the lamp body, a plurality of emergency LED light sources installed on the auxiliary substrate and emergency drivers for driving the emergency LED light sources, the emergency drivers are electrically connected with the auxiliary substrate, the emergency drivers are installed in the driving box, and the sum of the power of the emergency LED light sources is less than 20 watts.
Furthermore, four stuffing boxes which are divided into two pairs and used for allowing cables to penetrate through are mounted on the driving box, the main driver is electrically connected with the cables penetrating through one pair of the stuffing boxes, and the other pair of the emergency drivers is electrically connected with the cables penetrating through the stuffing boxes.
Further, connection terminals for connecting the wires passing through each pair of the stuffing boxes, respectively, are further installed in the drive box.
Furthermore, each connecting terminal is provided with a plurality of radiating fins.
Furthermore, the driving box is also provided with a grounding terminal which is respectively connected with the grounding terminal of each cable.
Furthermore, the driving box comprises a box body fixed on the lamp body and an end cover matched with the box body to cover the box body.
Furthermore, a plurality of first heat dissipation fins are arranged on the end cover.
Further, the drive box also comprises a sealing ring arranged between the end cover and the box body.
Furthermore, a plurality of second heat dissipation fins are arranged on the lamp body.
Furthermore, the lamp also comprises a U-shaped frame, and two ends of the U-shaped frame are respectively connected with two sides of the lamp body.
The double-drive lamp structure provided by the invention has the beneficial effects that: compared with the prior art, the high-power lighting circuit structure and the emergency lighting circuit structure are integrated in the same lamp structure, so that the high-power lighting circuit structure and the emergency lighting circuit structure are convenient to install, and meanwhile, the cost can be reduced; and a main driver is arranged to drive each main LED light source for illumination; the emergency driver is arranged to drive each emergency LED light source so as to realize emergency lighting; because set up main drive and emergency drive respectively, when the main drive used, emergency drive did not use, can not exert an influence to emergency drive, was convenient for carry out emergency lighting, the maintenance of being convenient for when the main drive damaged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is an exploded schematic view of a dual-drive lamp structure according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
fig. 3 is a schematic top view of the dual drive lamp structure of fig. 1.
Wherein, in the drawings, the reference numerals are mainly as follows:
100-dual drive lamp configuration; 10-a lamp body; 11-second heat dissipating fins; 13-U-shaped frame; 21-a box body; 211-an accommodating space; 22-end cap; 221-first heat dissipating fins; 23-a sealing ring; 25-installing a tube; 251-a heat sink; 24-a bolt; 26-a connection terminal; 261-a heat sink; 262-a containing cavity; 27-ground terminal; 31-a master drive; 311-a backplane; 312-avoidance slot; 32-emergency drive; 40-stuffing box; 41-external thread; 50-cable.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to fig. 3, a dual-drive lamp structure 100 according to the present invention will now be described. The dual-drive lamp structure 100 comprises a lamp body 10, a high-power lighting circuit structure and an emergency lighting circuit structure; a driving box is arranged on the back of the lamp body 10; the high power lighting circuit structure comprises a main substrate (not shown), a plurality of main LED light sources (not shown) and a main driver 31; the main substrate is installed in the lamp body 10, and each main LED light source is installed on the main substrate, and then each main LED light source is installed in the lamp body 10, the main driver 31 is used for driving each main LED light source, the main driver 31 is electrically connected with the main substrate, and then each main LED light source on the main substrate is driven to work, the main driver 31 is installed in the driving box, so as to protect the main driver 31 through the driving box, and the sum of the power of a plurality of main LED light sources is greater than 80 watts, so as to ensure the brightness requirement of illumination. Specifically, according to different lamps needed in different places, the corresponding total power can be set according to different lamp matching, for example, the sum of the powers of the main LED light sources can take a certain value between 80 and 150 watts. The emergency lighting circuit structure includes an auxiliary substrate (not shown), a plurality of emergency LED light sources (not shown), and an emergency driver 32; the auxiliary substrate is installed in the lamp body 10, and each emergency LED light source is installed on the auxiliary substrate, and then each emergency LED light source is installed in the lamp body 10, the emergency driver 32 is used for driving each emergency LED light source, the emergency driver 32 is electrically connected with the auxiliary substrate, and then each emergency LED light source on the auxiliary substrate is driven to work, the emergency driver 32 is installed in the driving box, so as to protect the emergency driver 32 through the driving box, and the sum of the power of a plurality of emergency LED light sources is less than 20 w, so as to perform emergency lighting. Specifically, according to different emergency lighting brightness required by different places, the corresponding total power can be set according to different lamp matching, for example, the sum of the power of the emergency LED light source can be a certain value between 10 and 20 watts. The structure realizes that the high-power lighting circuit structure and the emergency lighting circuit structure are arranged in the same lamp, so that the cost can be reduced, wires do not need to be arranged independently, and the installation is convenient; the high-power lighting circuit structure can be used for normal lighting, and when structural components of the high-power lighting circuit structure are damaged, such as the main driver 31 is damaged, emergency lighting can be performed through the emergency lighting circuit structure, and maintenance is facilitated. In addition, the sum of the power of the main LED light source is set to be more than 80 watts so as to ensure the brightness requirement during illumination; and the sum of the power of the emergency LED light sources is set to be less than 20 watts, so that the cost can be saved, and the influence on the illumination brightness of the dual-drive lamp structure 100 is small even when the emergency lighting circuit structure does not work, so that the emergency lighting circuit structure can not work when the high-power lighting circuit structure works normally, and the emergency lighting circuit structure cannot be influenced when the high-power lighting circuit structure works normally. The main driver 31 and the emergency driver 32 are arranged and interfere with each other differently, physical isolation can be achieved, the safety factor is high, and maintenance is convenient.
Compared with the prior art, the dual-drive lamp structure 100 provided by the invention integrates the high-power lighting circuit structure and the emergency lighting circuit structure into the same lamp structure, so that the installation is convenient, and the cost can be reduced; and a main driver 31 is provided to drive each main LED light source for illumination; an emergency driver 32 is provided to drive each emergency LED light source to realize emergency lighting; because set up main drive 31 and emergency drive 32 respectively, when main drive 31 used, emergency drive 32 did not use, can not exert an influence to emergency drive 32, was convenient for carry out emergency lighting, the maintenance of being convenient for when main drive 31 damaged.
Further, referring to fig. 1 to fig. 3, as an embodiment of the dual-drive lamp structure 100 provided by the present invention, the main substrate and the auxiliary substrate are integrally formed. Specifically, for example, the main substrate and the auxiliary substrate can be fabricated using the same substrate by dividing regions on the same substrate, fabricating a main circuit connecting each main LED light source in a part of the regions, and fabricating an emergency circuit connecting each emergency LED light source in another region. Of course, in other embodiments, the main substrate and the auxiliary substrate may be fabricated separately for easy maintenance.
Further, as a specific embodiment of the dual-drive lamp structure 100 provided by the present invention, in the present embodiment, the number of the main LED light sources is 30, and the power of each main LED light source is 3 watts. Furthermore, the 30 main LED light sources are respectively connected in parallel in five groups, and each group includes six main LED light sources connected in series.
Further, as a specific implementation manner of the dual-drive lamp structure 100 provided by the present invention, in this embodiment, the sum of the powers of the emergency LED light sources is 15 watts, and five LED light sources of 3 watts may be used. Of course, in other embodiments, multiple 1 watt LED sources and/or 2 watt LED sources may be used for the emergency LED light source.
Further, referring to fig. 1 to fig. 3 together, as a specific embodiment of the dual-drive lamp structure 100 provided by the present invention, in the present embodiment, four stuffing boxes 40 are installed on the driving box, and each stuffing box 40 is used for the cable 50 to pass through, so that the external cable 50 is electrically connected to the main driver 31 and the emergency driver 32; the four stuffing boxes 40 are divided into two pairs, the main driver 31 is electrically connected with the cable 50 passing through one pair of stuffing boxes 40, and the emergency driver 32 is electrically connected with the cable 50 passing through the other pair of stuffing boxes 40. Two pairs of stuffing boxes 40 are arranged, the main driver 31 corresponds to one pair of stuffing boxes 40, and the emergency driver 32 corresponds to the other pair of stuffing boxes 40, so that the installation of the cable 50 and the connection with the main driver 31 and the emergency driver 32 are facilitated. The main driver 31 corresponds to a pair of stuffing boxes 40, and two cables 50 passing through the pair of stuffing boxes 40 can be respectively a cable 50 for supplying power to the main driver 31 and a cable 50 for connecting the main driver 31 and the main substrate; the emergency actuator 32 corresponds to another pair of stuffing boxes 40, and the two cables 50 passing through the pair of stuffing boxes 40 can respectively supply the cable 50 for supplying power to the emergency main actuator 31 and the cable 50 for connecting the emergency actuator 32 with the auxiliary substrate.
Further, referring to fig. 1 to fig. 3, as a specific embodiment of the dual-drive lamp structure 100 provided by the present invention, four mounting tubes 25 are installed at the side of the driving box, and four stuffing boxes 40 are respectively installed in the four mounting tubes 25, which facilitates installation and fixation of the stuffing boxes 40.
Further, referring to fig. 1 to fig. 3, as an embodiment of the dual-drive lamp structure 100 provided by the present invention, each mounting tube 25 is provided with an internal thread (not shown), each stuffing box 40 is provided with an external thread 41, and each stuffing box 40 is installed in the corresponding mounting tube 25 by a threaded connection.
Further, referring to fig. 1 to fig. 3 together, as an embodiment of the dual-drive lamp structure 100 provided by the present invention, the driving box includes a box body 21 and an end cover 22, the box body 21 is fixed on the lamp body 10, and the end cover 22 can be covered on the box body 21 in a matching manner. The box body 21 and the end cover 22 are arranged, so that the main driver 31 and the emergency driver 32 can be installed in the box body 21, and the installation is convenient; the end cap 22 is provided to form a sealed space for protecting the main driver 31 and the emergency driver 32.
Further, referring to fig. 1 to fig. 3, as an embodiment of the dual-drive lamp structure 100 provided by the present invention, each mounting tube 25 is disposed at a side of the box body 21. Further, the mounting tube 25 may be integrally formed with the case 21 for easy manufacturing.
Further, a plurality of heat dissipation plates 251 are provided on each of the installation pipes 25 to improve heat dissipation efficiency and also to protect the cable 50.
Further, referring to fig. 1 to fig. 3, as an embodiment of the dual-drive lamp structure 100 according to the present invention, the end cover 22 is provided with a plurality of first heat dissipation fins 221. The first heat dissipation fins 221 are disposed on the end cap 22, so as to improve heat dissipation efficiency and facilitate heat dissipation.
Further, referring to fig. 1 to fig. 3, as an embodiment of the dual-drive lamp structure 100 provided in the present invention, the driving box further includes a sealing ring 23 disposed between the end cap 22 and the box body 21. The sealing ring 23 is arranged, so that the end cover 22 can be better covered on the box body 21 to form a sealing space, and further, the waterproof function can be realized. Further, the end cap 22 may be mounted on the case body 21 by bolts 24.
Further, referring to fig. 1 to fig. 3, as an embodiment of the dual-drive lamp structure 100 provided in the present invention, the driving box is further installed with connection terminals 26 respectively used for connecting the wires passing through each pair of stuffing boxes 40. The connection terminal 26 is provided to facilitate electrical connection of the cable 50 to the main driver 31, and to facilitate connection of the emergency driver 32 to the cable 50.
Further, referring to fig. 1 to fig. 3, as an embodiment of the dual-drive lamp structure 100 provided in the present invention, a plurality of heat sinks 261 are disposed on each connection terminal 26. Because there are connecting resistance between cable 50 and connecting terminal 26 and between cable 50 wire and the wire, for high-power lighting structure, connecting terminal 26 department calorific capacity is great, therefore set up fin 261 on connecting terminal 26, can be convenient for dispel the heat, avoid taking place the short circuit, can also avoid the influence to main driver 31 and emergency driver 32 simultaneously.
Further, referring to fig. 1 to fig. 3 together, as a specific embodiment of the dual-drive lamp structure 100 provided by the present invention, a plurality of heat dissipation fins 261 are arranged in parallel, and a receiving cavity 262 for receiving the wires in the corresponding cable 50 is formed between two adjacent heat dissipation fins 261, so that different wires can be separated from each other, thereby avoiding short circuit, and the heat dissipation fins 261 can also perform a heat dissipation function.
Further, referring to fig. 1 to fig. 3, as an embodiment of the dual-drive lamp structure 100 provided in the present invention, the driving box further has a grounding terminal 27 for connecting to the grounding terminal of each cable 50. The grounding terminal 27 is respectively arranged corresponding to each cable 50, so that the protection effect can be better played, and the safety performance is improved.
Further, referring to fig. 1 to fig. 3, as an embodiment of the dual-drive lamp structure 100 provided in the present invention, a plurality of second heat dissipation fins 11 are disposed on the lamp body 10 to facilitate heat dissipation.
Further, referring to fig. 1 to fig. 3 together, as an embodiment of the dual-drive lamp structure 100 provided by the present invention, the dual-drive lamp structure 100 further includes a U-shaped frame 13, and two ends of the U-shaped frame 13 are respectively connected to two sides of the lamp body 10. The U-shaped frame 13 is arranged to facilitate installation and use of the dual-drive lamp structure 100, and is convenient to use.
Further, as an embodiment of the dual-drive lamp structure 100 provided by the present invention, two ends of the U-shaped frame 13 are hinged to the side of the lamp body 10, so that the angle of the lamp body 10 can be adjusted when the lamp is installed.
Further, referring to fig. 1 to fig. 3 together, as a specific embodiment of the dual-drive lamp structure 100 provided by the present invention, the main driver 31 is a rectangular parallelepiped structure, the emergency driver 32 is a cylindrical structure, the diameter of the emergency driver 32 is smaller than the length of the main driver 31, the emergency driver 32 is installed in the middle of the length direction of the driving box, and the emergency driver 32 is located at one side of the emergency driver 32, so that the driving box has a certain accommodating space 211 at both sides of the emergency driver 32, and the connection terminal 26 can be installed in each accommodating space 211, thereby fully utilizing the space in the driving box.
Further, referring to fig. 1 to fig. 3, as an embodiment of the dual-drive lamp structure 100 provided by the present invention, a bottom plate 311 is installed on a bottom surface of the main driver 31, and the bottom plate 311 is installed in the driving box, so as to stably fix the main driver 31 in the driving box. Specifically, the bottom plate 311 is fixed in the case 21.
Furthermore, an avoiding groove 312 is formed on the bottom plate 311 corresponding to the emergency driver 32, so as to reduce the occupied space and improve the utilization rate of the space in the driving box.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Dual drive lamps and lanterns structure, including the lamp body, the back of lamp body is equipped with drive box, its characterized in that: the dual-drive lamp structure also comprises a high-power lighting circuit structure and an emergency lighting circuit structure; the high-power lighting circuit structure comprises a main substrate arranged in the lamp body, a plurality of main LED light sources arranged on the main substrate and a main driver for driving each main LED light source, wherein the main driver is electrically connected with the main substrate, the main driver is arranged in the driving box, and the sum of the power of the main LED light sources is more than 80 watts; the emergency lighting circuit structure comprises an auxiliary substrate arranged in the lamp body, a plurality of emergency LED light sources arranged on the auxiliary substrate and an emergency driver for driving each emergency LED light source, wherein the emergency driver is electrically connected with the auxiliary substrate, the emergency driver is arranged in the driving box, and the sum of the power of the plurality of emergency LED light sources is less than 20 watts; the main substrate and the auxiliary substrate are integrally formed; the emergency driver is arranged in the middle of the driving box in the length direction and is positioned on one side of the main driver; a bottom plate is arranged on the bottom surface of the main driver and is arranged in the driving box; and an avoidance groove is formed in the position, corresponding to the emergency driver, on the bottom plate.
2. A dual drive lamp arrangement according to claim 1, wherein: four stuffing boxes which are divided into two pairs and used for allowing cables to penetrate through are installed on the driving box, the main driver is electrically connected with the cables penetrating through one pair of the stuffing boxes, and the other pair of the emergency drivers is electrically connected with the cables penetrating through the other pair of the stuffing boxes.
3. A dual drive lamp arrangement according to claim 2, wherein: and the driving box is also provided with connecting terminals which are respectively used for connecting the electric wires passing through each pair of stuffing boxes.
4. A dual drive lamp arrangement according to claim 3, wherein: and a plurality of radiating fins are arranged on each connecting terminal.
5. A dual drive lamp arrangement according to claim 2, wherein: and the driving box is also internally provided with a grounding terminal which is respectively connected with the grounding terminal of each cable.
6. A dual drive lamp structure according to any one of claims 1-5, wherein: the driving box comprises a box body fixed on the lamp body and an end cover matched with the box body.
7. A dual drive lamp arrangement according to claim 6, wherein: the end cover is provided with a plurality of first heat dissipation fins.
8. A dual drive lamp arrangement according to claim 6, wherein: the drive box also comprises a sealing ring arranged between the end cover and the box body.
9. A dual drive lamp structure according to any one of claims 1-5, wherein: and a plurality of second heat dissipation fins are arranged on the lamp body.
10. A dual drive lamp structure according to any one of claims 1-5, wherein: the lamp body is characterized by further comprising a U-shaped frame, and two ends of the U-shaped frame are connected with two sides of the lamp body respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711295152.9A CN109915741B (en) | 2017-12-08 | 2017-12-08 | Double-drive lamp structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711295152.9A CN109915741B (en) | 2017-12-08 | 2017-12-08 | Double-drive lamp structure |
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| CN109915741A CN109915741A (en) | 2019-06-21 |
| CN109915741B true CN109915741B (en) | 2021-01-08 |
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| CN201711295152.9A Active CN109915741B (en) | 2017-12-08 | 2017-12-08 | Double-drive lamp structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110486666B (en) * | 2019-07-12 | 2022-06-24 | 深圳市海洋王绿色照明技术有限公司 | Auxiliary lighting lamp for airplane |
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| CN202065869U (en) * | 2011-04-20 | 2011-12-07 | 浙江萤尔光电科技有限公司 | LED dual-purpose emergency lamp |
| CN202203818U (en) * | 2011-08-09 | 2012-04-25 | 深圳市恒之源电器有限公司 | LED lamp strip for subway illumination |
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|---|---|
| CN109915741A (en) | 2019-06-21 |
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