License plate lamp

Abstract

The utility model discloses an automobile license plate lamp which comprises a wire harness assembly and two lamp bodies, the wire harness assembly is provided with a plug electrically connected with an automobile power source, each lamp body comprises a transparent shell and a circuit board, and LED lamps are integrated on the circuit boards; the wiring harness assembly is electrically connected with the circuit boards of the two lamp bodies respectively, the interior of the shell is hollow, the tail end of the shell is open to form an opening communicated with an inner cavity of the shell, the circuit board is connected to the inner cavity of the shell, a filling space is formed between the circuit board and the opening, and the circuit board is arranged in the filling space. And the filling space is filled with a sealant layer for sealing the opening. The automobile license plate lamp is good in sealing performance and long in service life.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts, and specifically relates to an automotive license plate lamp. Background Art

[0002] An automotive license plate lamp is a lighting fixture for the license plate at the rear of an automobile, used to illuminate the vehicle license plate at night or in dim daylight. This automotive license plate lamp can also remind the following vehicle to avoid vehicle rear-end collisions. Moreover, once a traffic accident occurs to the vehicle, online traffic police can see the vehicle number plate from the front and rear of the vehicle, and find out the responsible person of the vehicle through the number plate to provide timely rescue or quickly handle the traffic accident. Therefore, most current automobiles are equipped with license plate lamps. The license plate lamps of related technologies generally include a left lamp body and a right lamp body, which are respectively arranged on both sides of the top of the license plate to illuminate the license plate simultaneously. Each lamp body includes a transparent housing, a PCB board or circuit board installed inside the housing, and the PCB board or circuit board is integrated with LED lamps. The rear end of the housing is open and the front end is provided with a lamp cover structure, and a cover plate is hermetically connected to the open end of the housing.

[0003] The automotive license plate lamps of the above related technologies generally have the following defects: The automotive license plate lamp is installed inside the automotive shell, and its waterproof performance determines the service life of the automotive license plate lamp; in the automotive license plate lamp of related technologies, a waterproof sealing ring is provided between the cover plate and the housing, but after long-term use, especially due to factors such as high-temperature sunlight or vehicle rear-end collisions, the sealing ring ages and deforms, resulting in a decline in its waterproof performance and a shortening of the service life; furthermore, there is generally a problem that the included angle between the normal direction of the light-emitting surface and the normal direction of the license plate is relatively large in the automotive license plate lamp, so that the brightness or brightness uniformity of the license plate surface cannot meet the requirements. Summary of the Utility Model

[0004] The technical problem to be solved by this application is to overcome the defects of the above related technologies and provide an automotive license plate lamp with good sealing performance and long service life.

[0005] The technical solution of this application is to provide an automotive license plate lamp with the following structure: including a wire harness assembly and two lamp bodies, the wire harness assembly has a plug electrically connected to the automotive power supply, and each lamp body includes a transparent housing and a circuit board, and the circuit board is integrated with LED lamps; the wire harness assembly is electrically connected to the circuit boards of the two lamp bodies respectively, the interior of the housing is hollow and the tail end of the housing is open to form an opening communicating with the inner cavity of the housing, the circuit board is connected in the inner cavity of the housing, and a filling space is provided between the circuit board and the opening, and a sealing glue layer for sealing the opening is filled in the filling space.

[0006] In some embodiments, the two lamp bodies are connected in series.

[0007] In some embodiments, an annular step for the circuit board to abut against is provided in the inner cavity of the housing. The circuit board abuts against the annular step, and when a sealant layer is filled in the filling space, it is used to prevent the sealant layer from entering the side of the circuit board away from the opening.

[0008] In some embodiments, a limiting clamping platform is provided on the inner wall of the inner cavity of the housing, and there is a gap between the limiting clamping platform and the annular step. When the circuit board abuts against the annular step, the limiting clamping platform is clamped on the back of the circuit board; an introduction inclined surface for the circuit board to be inserted into the gap is provided on the outer side wall of the limiting clamping platform.

[0009] In some embodiments, a sealant plug for sealing connection with the vehicle body shell is connected to the wire harness assembly.

[0010] In some embodiments, a plurality of buckles for mating and clamping with the vehicle body shell are circumferentially distributed on the outer side wall of the housing.

[0011] In some embodiments, a light refraction structure for mating with the LED lamp on the circuit board is provided on the inner wall of the side of the housing away from the opening. The light refraction structure is used to diffuse the light emitted by the LED lamp.

[0012] In some embodiments, the light refraction structure includes an arc-shaped protruding portion formed on the inner wall of the housing and protruding into the housing, and a plurality of light-transmitting surfaces at different angles are provided on the surface of the arc-shaped protruding portion. A plurality of stepped surfaces at different angles are provided on both the upper and lower sides of the arc-shaped protruding portion.

[0013] In summary, compared with the related art, an automotive license plate lamp of the present application has the following advantages: after the circuit board is installed in the housing, a filling space with a certain height is reserved between the circuit board and the opening at the tail end of the housing. A sealant layer for sealing the opening is filled in the filling space. The sealant layer is in contact with the back of the circuit board and the inner wall of the inner cavity of the housing, so as to firmly fix the circuit board in the housing and the sealant layer can well seal the opening of the housing, thereby making the sealing performance of the lamp body of the automotive license plate lamp better and preventing water from entering due to assembly precision errors; in addition, the sealant layer is a filled and solidified sealant, which can firmly fix the circuit board in the housing, thereby reducing the assembly process of the circuit board and making the assembly of the automotive license plate lamp simpler and more convenient. Therefore, the automotive license plate lamp has good sealing performance, long service life, and is simple and convenient to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of an automotive license plate lamp according to some embodiments of the present application.

[0015] Figure 2It is a schematic assembly structure diagram of a license plate lamp according to some embodiments of the present application.

[0016] Figure 3 It is a schematic installation diagram of a license plate lamp according to some embodiments of the present application.

[0017] Figure 4 It is a schematic structural diagram of the lamp body of a license plate lamp according to some embodiments of the present application.

[0018] Figure 5 It is a schematic bottom structure diagram of the lamp body of a license plate lamp according to some embodiments of the present application.

[0019] Figure 6 It is a schematic cross-sectional view of the lamp body of a license plate lamp according to some embodiments of the present application.

[0020] Figure 7 It is a schematic assembly diagram of the lamp body of a license plate lamp according to some embodiments of the present application.

[0021] Figure 8 It is a schematic structural diagram of the housing of a license plate lamp according to some embodiments of the present application.

[0022] Figure 9 It is a schematic partial cross-sectional structural diagram of the housing of a license plate lamp according to some embodiments of the present application.

[0023] Explanation of reference numerals:

[0024] 1. Wiring harness assembly, 100. Plug, 2. Lamp body, 200. Housing, 201. Opening, 202. Circuit board, 203. Sealant layer, 204. Buckle, 205. Filling space, 206. LED lamp, 207. Annular step, 208. Light refraction structure, 209. Limit clamping platform, 210. Introduction slope, 211. Step surface, 3. Sealant plug. Detailed implementation manners

[0025] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0026] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0027] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature in terms of horizontal height.

[0028] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] See Figures 1 to 9 As shown; the embodiments of the present application disclose an automotive license plate lamp, which is installed inside the housing of the vehicle and located above or below the license plate, such as inside the front apron or on the trunk lid, etc., for illuminating the license plate; its structure includes a wiring harness assembly 1 and two lamp bodies 2. The wiring harness assembly 1 has a plug 100 electrically connected to the vehicle power supply. Each lamp body 2 includes a transparent housing 200 and a circuit board 202, and an LED lamp 206 is integrated on the circuit board 202; the wiring harness assembly 1 is electrically connected to the circuit boards 202 of the two lamp bodies 2 respectively, and the plug 100 of the wiring harness assembly 1 is inserted into the vehicle power supply line to draw power, so that the two lamp bodies 2 of the automotive license plate lamp emit light to illuminate the vehicle license plate.

[0030] It can be understood that the two lamp bodies 2 of the automotive license plate lamp are in a series state through the connection of the wiring harness assembly 1. For the convenience of installing the two lamp bodies 2 of the automotive license plate lamp on the vehicle, such as Figure 3 , Figure 4 and Figure 5As shown, a plurality of buckles 204 that are circumferentially distributed on the outer side wall of the housing 200 of the lamp body 2 and are engaged with the car body shell. During installation, only need to snap the two lamp bodies 2 onto the car body shell through the buckles 204, and then snap the wire harness assembly 1 onto the wire clip preset inside the car body shell; A seal plug 3 for sealing connection with the car body shell is connected to the wire harness assembly 1. After the two lamp bodies 2 are installed, the seal plug 3 can seal the wire passing hole through which the wire harness assembly 1 passes through the car body shell, avoiding the shaking of the wire harness assembly 1 and also playing a good waterproof role; Thus, the installation of the license plate lamp is completed, and its installation is very simple and does not require the use of manual tools.

[0031] In the embodiment of the present application, as Figure 2 、 Figure 4 、 Figure 6 and Figure 7 shown, the interior of the housing 200 is hollow and the tail end of the housing 200 is open to form an opening 201 communicating with the inner cavity of the housing 200. The circuit board 202 is connected to the inner cavity of the housing 200, and a filling space 205 is provided between the circuit board 202 and the opening 201. A sealant layer 203 for sealing the opening 201 is filled in the filling space 205. That is, after the circuit board 202 is installed in the housing 200, there is a certain height between the end face of the circuit board 202 and the opening 201 of the housing 200, and the filling space 205 is formed within this height. In the filling space 205, a soft and flowable soft glue is filled by the process of filling and sealing glue, and after cooling, it forms a sealant layer 203 for sealing the opening 201. Therefore, in the embodiment of the present application, the sealant layer 203 contacts the back of the circuit board 202 and the inner wall of the inner cavity of the housing 200, thereby firmly fixing the circuit board 202 in the housing 200 and the sealant layer 203 can well seal the opening 201 of the housing 200, so that the sealing performance of the lamp body 2 of the license plate lamp is better, preventing water from entering due to the assembly precision error; In addition, the sealant layer 203 is a sealed glue after filling and solidification, which can firmly fix the circuit board 202 in the housing 200, thereby reducing the assembly process of the circuit board 202 and making the assembly of the license plate lamp simpler and more convenient. Therefore, the license plate lamp has good sealing performance, long service life, and simple and convenient assembly.

[0032] In this embodiment, the sealant layer 203 is formed by filling with an epoxy potting AB mixed glue of the prior art, which not only has good insulation, but also has good sealing performance, high temperature resistance and is not easy to age.

[0033] Furthermore, in this embodiment, in order to facilitate the installation and positioning of the circuit board 202, improve the installation efficiency of the circuit board 202, and avoid the glue flowing into the chamber where the LED lamp 206 is located during potting and sealing, as Figure 7 、 Figure 8 andFigure 9 As shown, an annular step 207 for the circuit board 202 to abut against is provided in the inner cavity of the housing 200. The circuit board 202 abuts against the annular step 207. When the sealing glue layer 203 is filled in the filling space 205, the annular step 207 can be used to block the sealing glue layer 203 from entering the side of the circuit board 202 far away from the opening 201, that is, to prevent the glue from flowing into the chamber where the LED lamp 206 is located.

[0034] Furthermore, a limiting clamping platform 209 is provided on the inner wall of the inner cavity of the housing 200, and there is a gap between the limiting clamping platform 209 and the annular step 207. As Figure 7 and Figure 8 shown, when the circuit board 202 abuts against the annular step 207, the limiting clamping platform 209 is clamped to the back of the circuit board 202. With such a setting, when installing the circuit board 202, the circuit board 202 only needs to be clamped in the gap between the annular step 207 and the limiting clamping platform 209 to complete the positioning of the circuit board 202, and there is no need to use fasteners such as screws to position the circuit board 202, thus making the assembly of the circuit board 202 simpler and more convenient.

[0035] In the above embodiment, in order to conveniently and quickly clamp the circuit board 202 into the gap between the annular step 207 and the limiting clamping platform 209, a guiding inclined surface 210 for the circuit board 202 to be clamped into the gap is provided on the outer side wall of the limiting clamping platform 209. By using the guiding function of the guiding inclined surface 210, the circuit board 202 can be easily clamped between the annular step 207 and the limiting clamping platform 209.

[0036] In some embodiments, as Figure 6 、 Figure 8 and Figure 9 shown, a light refraction structure 208 matching the LED lamp 206 on the circuit board 202 is provided on the inner wall of the side of the housing 200 far away from the opening 201. The light refraction structure 208 is used to diffuse the light emitted by the LED lamp 206. The light refraction structure 208 can refract the light emitted by the LED lamp 206 multiple times, which can not only increase the range of the light emitted by the LED lamp 206, but also make the light emitted by the LED lamp 206 more uniform and brighter when irradiating on the license plate, meeting the lighting requirements. Further, the light refraction structure 208 includes an arc-shaped convex portion formed on the inner wall of the housing 200 and protruding into the housing 200, and there are a plurality of light-transmitting surfaces at different angles on the surface of the arc-shaped convex portion. The arc-shaped convex portion is arranged in a similar partial cylindrical shape, narrow in the middle and wide at both ends, and the surface of the arc-shaped convex portion has a plurality of light-transmitting surfaces at different angles, and the light-transmitting surface is in an irregular arc shape. Moreover, the light refraction structure 208 further includes a plurality of stepped surfaces 211 at different angles provided on the upper and lower sides of the arc-shaped convex portion, as Figure 9As shown, a plurality of steps are symmetrically arranged on both sides of the arc-shaped protrusion. The plurality of steps are arranged in a wavy shape, and a planar step surface 211 is provided on one side of each step close to the LED lamp 206. The light emitted by the LED lamp 206 is refracted by the plurality of planar step surfaces 211, so that the light diffusion range is wide and the light is soft, and the included angle between the normal of the light-emitting surface of the light refraction structure 208 and the normal of the license plate is reduced, so that the brightness or brightness uniformity of the license plate surface meets the illumination requirements.

[0037] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inner" and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0038] In the description of the present application, the description with reference to terms such as "one embodiment", "some embodiments", "in this embodiment", "specific examples", or "some examples" means that the specific features, mechanisms, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0039] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A car license plate light, characterized in that: It comprises a wiring harness assembly and two lamp bodies, wherein the wiring harness assembly has a plug electrically connected to a car power supply, and each of the lamp bodies comprises a transparent shell and a circuit board, and the circuit board is integrated with an LED lamp; the wiring harness assembly is electrically connected to the circuit boards of the two lamp bodies respectively, the shell is hollow inside and the rear end of the shell is open to form an opening connected to the inner cavity of the shell, the circuit board is connected to the inner cavity of the shell, and a filling space is provided between the circuit board and the opening, and a sealing layer for sealing the opening is filled in the filling space.

2. The vehicle license plate light according to claim 1, characterized in that: The two lamp bodies are connected in series.

3. The vehicle license plate light according to claim 1, characterized in that: The inner cavity of the shell is provided with an annular step for the circuit board to abut against. The circuit board abuts against the annular step and is used to prevent the sealant layer from entering the side of the circuit board away from the opening when the sealant layer is filled in the filling space.

4. The vehicle license plate light according to claim 3, characterized in that: A limit card platform is provided on the inner wall of the inner cavity of the shell, and there is a gap between the limit card platform and the annular step. When the circuit board abuts against the annular step, the limit card platform is clamped on the back side of the circuit board; an introduction slope is provided on the outer side wall of the limit card platform for the circuit board to be clamped into the gap.

5. The vehicle license plate light according to claim 1, characterized in that: The wiring harness assembly is connected with a sealing rubber plug for sealingly connecting with the automobile shell.

6. The vehicle license plate light according to claim 1, characterized in that: The outer side wall of the shell is provided with a plurality of buckles distributed along the circumferential direction and matched with the outer shell of the automobile.

7. The vehicle license plate light according to claim 1, characterized in that: A light refraction structure matching the LED lamp on the circuit board is provided on the inner wall of the shell at a side away from the opening, and the light refraction structure is used to diffuse the light emitted by the LED lamp.

8. The vehicle license plate light according to claim 7, characterized in that: The light refraction structure includes an arc-shaped protrusion formed on the inner wall of the shell and protruding into the shell, and the surface of the arc-shaped protrusion is provided with multiple light-transmitting surfaces with different angles, and the upper and lower sides of the arc-shaped protrusion are both provided with multiple step surfaces with different angles.

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