Ultrathin low-cost surface light-emitting atmosphere lamp

Abstract

The ultrathin low-cost surface light-emitting atmosphere lamp comprises a lamp shell, a light guide plate, a driving circuit board and a lamp panel, the driving circuit board and the lamp panel are connected through a flat cable, and the groove bottom of a component installation groove is sunken to form a circuit board installation groove matched with the driving circuit board. A plurality of side light-emitting LEDs arranged in the length direction of the light inlet end face of the light guide plate are integrated on the lamp panel, and the light-emitting face of each side light-emitting LED faces the light inlet end face of the light guide plate. According to the ultrathin low-cost surface light-emitting atmosphere lamp, the PCBA is composed of the driving circuit board and the lamp panel which are of a split structure, the driving circuit board can be installed at the bottom of the light guide plate in a very closely attached mode, the lamp panel and the light guide plate are arranged in parallel, and the side light-emitting LEDs are adopted to project light to the light inlet end face of the light guide plate located on the end face of the light guide plate; therefore, the overall thickness of the atmosphere lamp can be made to be extremely thin, the atmosphere lamp can be further applied to an installation position with an extremely narrow space, meanwhile, the number of used side light-emitting LEDs of the atmosphere lamp is small, and the production cost is low.

Description

Technical Field

[0001] This utility model relates to the field of ambient lighting technology, specifically to an ultra-thin, low-cost surface-emitting ambient light. Background Technology

[0002] With the rapid advancement of automotive technology, almost all new car models have incorporated ambient lighting designs. In addition to linear ambient lighting, surface-emitting ambient lighting is also a widely used type of ambient lighting.

[0003] There are usually two ways to arrange the light source of surface-emitting ambient lights: one is to use an extra-large PCBA, which integrates a large number of LEDs. The LEDs are usually arranged in an array on the inside of the light guide plate. This is not only expensive, but also requires a certain gap between the LEDs and the light guide plate in order to ensure the lighting effect. This results in a larger thickness of the ambient light, higher requirements for installation space, and insufficient versatility.

[0004] For this purpose, please refer to the Chinese utility model patent with announcement number CN219063156U. A large number of surface-emitting ambient lights arrange the PCBA vertically at one end of the light guide plate, which not only greatly reduces the amount of LEDs used and lowers the production cost, but also optimizes the thickness, making it suitable for narrower installation spaces.

[0005] However, the applicant found in practical applications that the stability of vertically mounted PCBAs is not ideal. After long-term use, they are prone to loosening and causing abnormal noises. Furthermore, due to the limitations of vertical PCBA mounting, they cannot be made ultra-thin, making them unsuitable for installation locations with extremely narrow spaces.

[0006] Solving these problems is now a top priority. Utility Model Content

[0007] In view of this, the present invention provides an ultra-thin, low-cost surface-emitting ambient light.

[0008] The technical solution is as follows:

[0009] The first aspect of this application relates to an ultra-thin, low-cost surface-emitting ambient light, comprising a lamp housing and a light guide plate. The lamp housing has a component mounting groove adapted to the light guide plate. The light guide plate is installed in the component mounting groove, and one end face of the light guide plate is the light-inlet end face of the light guide plate. The light guide plate also includes a driver circuit board and a lamp board connected by a ribbon cable. The bottom of the component mounting groove is recessed to form a circuit board mounting groove adapted to the driver circuit board. The driver circuit board is installed in the circuit board mounting groove. The lamp board is installed parallel to the light guide plate at the bottom of the component mounting groove and close to the light-inlet end face of the light guide plate. The lamp board integrates multiple side-emitting LEDs arranged along the length direction of the light-inlet end face of the light guide plate, and the emitting surface of each side-emitting LED faces the light-inlet end face of the light guide plate.

[0010] The above-mentioned ultra-thin, low-cost surface-emitting ambient light uses a PCBA consisting of a split-structure driver circuit board and a lamp board. The driver circuit board can be installed very close to the bottom of the light guide plate, and the lamp board is arranged parallel to the light guide plate. It uses side-emitting LEDs to project light onto the light-inlet end face of the light guide plate, thereby enabling the overall thickness of the ambient light to be extremely thin. This allows the ambient light to be used in extremely narrow installation locations. At the same time, the ambient light uses fewer side-emitting LEDs, resulting in lower production costs.

[0011] In some embodiments, the driving circuit board is a rigid circuit board, and the lamp board is a flexible circuit board.

[0012] In some embodiments, the bottom of the component mounting groove protrudes to form at least two positioning pins, and the lamp plate has positioning holes that are adapted to each positioning pin. Each positioning pin is embedded in the corresponding positioning hole, and the lamp plate is attached to the bottom of the component mounting groove with adhesive backing.

[0013] In some embodiments, the slot of the circuit board mounting groove is covered by a cover plate, the inner surface of which is formed with circuit board support ribs for pressing the drive circuit board against the bottom of the circuit board mounting groove.

[0014] In some embodiments, the drive circuit board is bolted to the bottom of the circuit board mounting slot. The wall of the circuit board mounting slot is provided with a plurality of cover plate support bosses and a plurality of circuit board support bosses distributed circumferentially thereon. The inner surface of the cover plate is supported on the end face of each cover plate support boss, and the inner surface of the drive circuit board is supported on the end face of each circuit board support boss. A plurality of snap-fit ​​connectors are protruding from the outer circumferential edge of the cover plate. The wall of the circuit board mounting slot is provided with snap-fit ​​slots that are adapted to each snap-fit ​​connector, and each snap-fit ​​connector is snapped into the corresponding snap-fit ​​slot.

[0015] In some embodiments, the light guide plate has an array of optical protrusions on one side of the surface near the bottom of the component mounting groove, and the light guide plate is supported on the bottom of the component mounting groove and the outer surface of the cover plate by the optical protrusions.

[0016] In some embodiments, the light guide plate presses the lamp plate and its adjacent portion against the bottom of the component mounting groove.

[0017] In some embodiments, a plurality of light guide plate support feet are formed on the side surface of the light guide plate near the bottom of the component mounting groove, and the bottom of the component mounting groove is recessed to form support foot positioning grooves that are adapted to each light guide plate support foot, and each light guide plate support foot is embedded in the corresponding support foot positioning groove.

[0018] In some implementations, a face mask is also included, which completely blocks the light guide plate and the lamp plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Example 1 of an ultra-thin, low-cost surface-emitting ambient light;

[0020] Figure 2 A cross-sectional view of Example 1 of an ultra-thin, low-cost surface-emitting ambient light;

[0021] Figure 3 A schematic diagram of the light guide plate for Embodiment 1 of an ultra-thin, low-cost surface-emitting ambient light;

[0022] Figure 4 A schematic diagram of the structure of an ultra-thin, low-cost surface-emitting ambient light embodiment 1 after removing the light guide plate;

[0023] Figure 5 A schematic diagram of the structure of an ultra-thin, low-cost surface-emitting ambient light embodiment 1 after removing the light guide plate and cover plate;

[0024] Figure 6 A schematic diagram of the lamp housing for Example 1 of an ultra-thin, low-cost surface-emitting ambient light;

[0025] Figure 7 A schematic diagram of the cover plate for Embodiment 1 of an ultra-thin, low-cost surface-emitting ambient light;

[0026] Figure 8 This is a schematic diagram of the structure of Example 2 of an ultra-thin, low-cost surface-emitting ambient light;

[0027] Figure 9 A schematic diagram of the structure of the mask for Embodiment 2 of an ultra-thin, low-cost surface-emitting ambient light;

[0028] Figure 10 This is a schematic diagram of the structure of Example 2 of an ultra-thin, low-cost surface-emitting ambient light after removing the mask. Detailed Implementation

[0029] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0030] Example 1:

[0031] like Figures 1-7As shown, an ultra-thin, low-cost surface-emitting ambient light mainly includes a lamp housing 1, a light guide plate 2, a driving circuit board 4, and a lamp board 5. The lamp housing 1 has a component mounting groove 1a adapted to the light guide plate 2. The light guide plate 2 is installed in the component mounting groove 1a. One end face of the light guide plate 2 is the light-inlet end face 2a. In this embodiment, the light guide plate 2 has a rectangular plate structure, and the outer edge of one short side of the light guide plate 2 is the light-inlet end face 2a. This reduces the number of LED beads while ensuring the uniformity of light emission from the light guide plate 2, thus lowering the cost. Furthermore, this embodiment directly uses the light guide plate 2 as a mask, further reducing the cost.

[0032] The driving circuit board 4 and the lamp board 5 are connected by a ribbon cable 3. The bottom of the component mounting groove 1a is recessed to form a circuit board mounting groove 1b that is compatible with the driving circuit board 4. The driving circuit board 4 is installed in the circuit board mounting groove 1b. The lamp board 5 is installed parallel to the light guide plate 2 at the bottom of the component mounting groove 1a. The lamp board 5 is adjacent to the light-inlet end face 2a of the light guide plate. The lamp board 5 integrates multiple side-emitting LEDs 5a arranged along the length direction of the light-inlet end face 2a of the light guide plate. The light-emitting surface of each side-emitting LED 5a faces the light-inlet end face 2a of the light guide plate.

[0033] Therefore, the driving circuit board 4 controls the side-emitting LEDs 5a on the lamp board 5. Each side-emitting LED 5a emits light from its emitting surface located near the light-inlet end face 2a of the light guide plate and directs it towards the light-inlet end face 2a of the light guide plate. Thus, the PCBA in this embodiment is composed of a split structure of driving circuit board 4 and lamp board 5. The driving circuit board 4 can be installed very close to the bottom of the light guide plate 2, and the distance between the two is much smaller than that of the traditional method of installing a PCBA with integrated LED beads at the bottom of the light guide plate 2. At the same time, the lamp board 4 is arranged parallel to the light guide plate 2, and the side-emitting LEDs 5a project light onto the light-inlet end face 2a of the light guide plate located at the end face of the light guide plate 2. This allows the overall thickness of the ambient light to be extremely thin, enabling the ambient light to be used in extremely narrow installation positions. Furthermore, the number of side-emitting LEDs 5a used in the ambient light of this embodiment is small, resulting in lower production costs.

[0034] Furthermore, the driving circuit board 4 is preferably a rigid circuit board, which is inexpensive. The lamp board 5 is preferably a flexible circuit board, which is not only thin, but also deformable, and can perfectly match the light-inlet end face 2a of various shapes of light guide plates (e.g., the light-inlet end face 2a of a light guide plate with an arc or curve structure), which is convenient for installation.

[0035] Furthermore, at least two positioning pins 1c protrude from the bottom of the component mounting groove 1a. The lamp plate 5 has positioning holes 5b that are respectively adapted to each positioning pin 1c. Each positioning pin 1c is embedded in its corresponding positioning hole 5b, ensuring the accuracy of the lamp plate 5's installation position. Simultaneously, the lamp plate 5 is adhered to the bottom of the component mounting groove 1a using adhesive, ensuring not only the reliability of the lamp plate 5's installation but also excellent ease of installation.

[0036] Please see Figure 2 and Figure 7 The slot of the circuit board mounting groove 1b is covered by a cover plate 6. The inner surface of the cover plate 6 has a protruding circuit board support rib 6a for pressing the drive circuit board 4 into the bottom of the circuit board mounting groove 1b. This not only improves the reliability of the drive circuit board 4 installation and avoids abnormal noise, but also, by adding the cover plate 6, and the fact that the material of the cover plate 6 is the same as that of the lamp housing 1, the cover plate 6 is integrated with the bottom of the circuit board mounting groove 1b, which can effectively improve the uniformity of the light guide plate 2 after it is lit.

[0037] Please see Figure 2 , Figure 5 and Figure 6 The drive circuit board 4 is locked to the bottom of the circuit board mounting slot 1b by bolts 7. Specifically, the bottom of the circuit board mounting slot 1b is integrally formed with a bolt mounting seat 1b5. After the bolts 7 pass through the drive circuit board 4, they are locked onto the bolt mounting seat 1b5, which ensures the reliability of the installation of the drive circuit board 4.

[0038] Further, please see Figures 2-7 The circuit board mounting groove 1b has multiple cover plate support bosses 1b1 and multiple circuit board support bosses 1b2 distributed circumferentially on its groove wall. The inner surface of the cover plate 6 is supported on the end face of each cover plate support boss 1b1, and the inner surface of the drive circuit board 4 is supported on the end face of each circuit board support boss 1b2. Multiple snap-fit ​​connectors 6b are protruding from the outer circumferential edge of the cover plate 6. The groove wall of the circuit board mounting groove 1b has snap-fit ​​slots 1b3 that are adapted to each snap-fit ​​connector 6b. Each snap-fit ​​connector 6b is snapped into the corresponding snap-fit ​​slot 1b3, which improves the stability and reliability of the installation of the drive circuit board 4 and the cover plate 6.

[0039] Furthermore, the end faces of the cover plate support boss 1b1 and the circuit board support boss 1b2 are both provided with abutment ribs 1b4 extending from the groove wall of the circuit board mounting groove 1b toward the groove opening. The circumferential outer edges of the drive circuit board 4 and the cover plate 6 abut against each abutment rib 1b4, which further improves the stability and reliability of the installation of the drive circuit board 4 and the cover plate 6.

[0040] Please see Figure 2 and Figure 3The light guide plate 2 has an array of optical protrusions on its surface near the bottom of the component mounting groove 1a to ensure the brightness and uniformity of the light emitted by the light guide plate 2. Simultaneously, the light guide plate 2 is supported by the optical protrusions on the bottom of the component mounting groove 1a and the outer surface of the cover plate 6, ensuring not only reliable installation of the light guide plate 2 but also reliable installation of the cover plate 6, thereby preventing abnormal noise.

[0041] Please see Figure 1 and Figure 2 The light guide plate 2 presses the lamp plate 5 and its adjacent parts firmly against the bottom of the component mounting groove 1a. That is, a part of the lamp plate 5 near the light guide plate 2 is pressed firmly against the bottom of the component mounting groove 1a by the light guide plate 2, thereby improving the reliability of the lamp plate 5 installation.

[0042] Please see Figure 3 and Figure 4 The light guide plate 2 has multiple light guide plate support feet 2b protruding from one side of the surface near the bottom of the component mounting groove 1a. The bottom of the component mounting groove 1a has a support foot positioning groove 1d that matches each light guide plate support foot 2b. Each light guide plate support foot 2b is embedded in the corresponding support foot positioning groove 1d, which further improves the stability and reliability of the installation of the light guide plate 2.

[0043] Furthermore, the bottom and walls of the support foot positioning groove 1d are also provided with support ribs and limiting ribs for positioning the light guide plate support foot 2b, thereby further improving the tightness of the fit between the light guide plate support foot 2b and the support foot positioning groove 1d and avoiding abnormal noise.

[0044] Example 2:

[0045] Please see Figure 8 and Figure 10 The main structure of this embodiment is exactly the same as that of embodiment 1, except that it also includes a mask 8, which completely blocks the light guide plate 2 and the lamp plate 5.

[0046] In this embodiment, the structure of the mask 8 is adapted to the structure of the component mounting groove 1a, and the mask 8 is also embedded in the component mounting groove 1a, resulting in a high overall structural compactness.

[0047] Meanwhile, the bottom of the component mounting groove 1a is recessed to form multiple panel mounting slots 1e distributed circumferentially along the light guide plate 2. The inner surface of the mask 8 is integrally formed with panel mounting clips 8a that are adapted to the corresponding panel mounting slots 1e. Each panel mounting clip 8a is embedded in the corresponding panel mounting slot 1e, ensuring the stability and reliability of the mask 8 installation.

[0048] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. An ultra-thin, low-cost surface-emitting ambient light, comprising a lamp housing (1) and a light guide plate (2), wherein the lamp housing (1) has a component mounting groove (1a) adapted to the light guide plate (2), the light guide plate (2) is mounted in the component mounting groove (1a), and one end face of the light guide plate (2) is the light-inlet end face (2a), characterized in that: It also includes a drive circuit board (4) and a lamp board (5) connected by a ribbon cable (3). The bottom of the component mounting groove (1a) is recessed to form a circuit board mounting groove (1b) that is compatible with the drive circuit board (4). The drive circuit board (4) is installed in the circuit board mounting groove (1b). The lamp board (5) is installed parallel to the light guide plate (2) at the bottom of the component mounting groove (1a) and close to the light guide plate light-inlet end face (2a). The lamp board (5) integrates multiple side-emitting LEDs (5a) arranged along the length direction of the light guide plate light-inlet end face (2a). The light-emitting surface of each side-emitting LED (5a) faces the light guide plate light-inlet end face (2a).

2. The ultra-thin, low-cost surface-emitting ambient light according to claim 1, characterized in that: The driving circuit board (4) is a rigid circuit board, and the lamp board (5) is a flexible circuit board.

3. The ultra-thin, low-cost surface-emitting ambient light according to claim 2, characterized in that: The bottom of the component mounting groove (1a) has at least two positioning pins (1c) protruding out. The lamp plate (5) has positioning holes (5b) that are adapted to each positioning pin (1c). Each positioning pin (1c) is embedded in the corresponding positioning hole (5b). The lamp plate (5) is attached to the bottom of the component mounting groove (1a) with adhesive backing.

4. The ultra-thin, low-cost surface-emitting ambient light according to claim 2, characterized in that: The slot of the circuit board mounting groove (1b) is covered by a cover plate (6), and the inner surface of the cover plate (6) has a circuit board support rib (6a) for pressing the drive circuit board (4) against the bottom of the circuit board mounting groove (1b).

5. The ultra-thin, low-cost surface-emitting ambient light according to claim 4, characterized in that: The drive circuit board (4) is locked to the bottom of the circuit board mounting groove (1b) by bolts (7). The groove wall of the circuit board mounting groove (1b) is provided with a plurality of cover plate support bosses (1b1) and a plurality of circuit board support bosses (1b2) distributed along its circumference. The inner surface of the cover plate (6) is supported on the end face of each cover plate support boss (1b1), and the inner surface of the drive circuit board (4) is supported on the end face of each circuit board support boss (1b2). A plurality of snap-fit ​​connectors (6b) are protruding on the outer edge of the cover plate (6). The groove wall of the circuit board mounting groove (1b) is provided with snap-fit ​​slots (1b3) that are adapted to each snap-fit ​​connector (6b). Each snap-fit ​​connector (6b) is snapped into the corresponding snap-fit ​​slot (1b3).

6. The ultra-thin, low-cost surface-emitting ambient light according to claim 4, characterized in that: The light guide plate (2) has an array of optical protrusions on one side of the surface near the bottom of the component mounting groove (1a). The light guide plate (2) is supported by the optical protrusions on the bottom of the component mounting groove (1a) and the outer surface of the cover plate (6).

7. The ultra-thin, low-cost surface-emitting ambient light according to claim 3, characterized in that: The light guide plate (2) presses the lamp plate (5) and its adjacent portion against the bottom of the component mounting groove (1a).

8. The ultra-thin, low-cost surface-emitting ambient light according to claim 1, characterized in that: The light guide plate (2) has a plurality of light guide plate support feet (2b) protruding on one side surface near the bottom of the component mounting groove (1a). The bottom of the component mounting groove (1a) is recessed to form support foot positioning grooves (1d) that are adapted to each light guide plate support foot (2b). Each light guide plate support foot (2b) is embedded in the corresponding support foot positioning groove (1d).

9. The ultra-thin, low-cost surface-emitting ambient light according to claim 1, characterized in that: It also includes a mask (8) that completely blocks the light guide plate (2) and the lamp plate (5).

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