Ultrathin annular large-space light-emitting structure

Abstract

The utility model relates to the technical field of lamps, in particular to an ultrathin annular large-space light-emitting structure which comprises a lamp shell, a light guide plate and an annular PCBA (printed circuit board assembly) are arranged in the lamp shell, an outer bottom surface of the lamp shell sinks towards the inside of the lamp shell to form a groove, and an annular cavity for placing the PCBA is formed between the outer groove wall of the groove and the inner wall of the lamp shell. The light guide plate is located above the PCBA plate, the LED light sources are arranged on the side face, close to the light guide plate, of the PCBA plate, the LED light sources are annularly distributed along the edge of the PCBA plate, the LED light sources emit light from the top, the LED light sources are annularly distributed according to the PCBA plate, light energy can be transmitted to the light guide plate, and the light guide plate can emit light from the light guide plate. Therefore, the lumen value of the LED light source can be ensured, the limitation of a lamp structure is overcome, a certain space can be reserved for arranging other devices, the performance is ensured, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lamp technical field, especially in a kind of super thin annular large space light emitting structure. BACKGROUND

[0002] In the lamp industry, there are performance requirements such as brightness, chroma and saturation for light. In recent years, in addition to meeting the performance requirements of light, the requirement for the longitudinal structure space of the lamp is getting smaller and smaller, while the performance requirement is getting higher and higher. In the automobile lamp, such as the car logo lamp, several LEDs are used as light sources, and there are two implementation methods. One is to arrange the side light emitting LED in a ring shape, and light up the reflector plate, light guide plate and diffusion plate. The other is to arrange the top light emitting LED in a matrix form, and light up the reflector plate, light guide plate and diffusion plate. However, the luminous flux of the side light emitting LED is lower than that of the top light emitting LED, which cannot meet the brightness requirement. The top light emitting LED matrix arrangement meets the brightness and uniformity through the design of the reflector plate, light guide plate and diffusion plate, but the overall height size is large (40mm), and other devices cannot be installed in the middle of the lamp, which is not conducive to the optimization of the structure space. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a super thin annular large space light emitting structure, which can not only overcome the limitation of the structure space of the lamp, but also provide space for arranging other devices, while ensuring the luminous flux of the LED light source.

[0004] To solve the above technical problems, the utility model adopts the technical scheme that:

[0005] A super thin annular large space light emitting structure includes a lamp shell, a light guide plate and a ring-shaped PCBA plate are arranged inside the lamp shell, an outer bottom surface of the lamp shell is recessed towards the inside of the lamp shell to form a groove, an annular cavity for placing the PCBA plate is formed between the outer groove wall of the groove and the inner wall of the lamp shell, the light guide plate is located above the PCBA plate, a plurality of LED light sources are arranged on one side surface of the PCBA plate close to the light guide plate, and the plurality of LED light sources are distributed in a ring shape along the edge of the PCBA plate.

[0006] Further, the cross-sectional shape of the light guide plate is U-shaped, and the U-shaped opening of the light guide plate faces the PCBA plate.

[0007] Further, the bottom surface of the opening end of the light guide plate is a light source receiving surface of the LED light source, the light source receiving surface is located directly above the plurality of LED light sources, and a plurality of strip-shaped protrusions are arranged on the light source receiving surface.

[0008] Further, the shape of the light source receiving surface is circular ring, and the plurality of strip-shaped protrusions form a corrugated surface distributed along the circumference.

[0009] Further, the inner surface of the open end of the light guide plate is a light reflection surface of the LED light source, and the light reflection surface is provided with optical dots.

[0010] Further, the outer edge of the light guide plate is provided with a reflective skin.

[0011] Further, the outer surface of the light guide plate and the inner wall of the lamp shell are connected through a 3M adhesive layer.

[0012] Further, the number of the LED light sources is eight, and the eight LED light sources are distributed along the edge of the PCBA board in a ring shape.

[0013] Further, the lamp shell comprises a cover plate and a lampshade with an opening at one end face, the cover plate is arranged at the opening of the lampshade, the recess is formed by the cover plate being recessed towards the inside of the lampshade, and the annular cavity is formed between the outer groove wall of the recess and the inner wall of the lampshade.

[0014] Further, the lampshade and the cover plate are fixed through ultrasonic welding.

[0015] The beneficial effects of the present application are as follows:

[0016] The present application sets the annular PCBA board, the outer bottom surface of the lamp shell is recessed to form a recess towards the inside of the lamp shell, and the annular cavity for placing the PCBA board is formed between the outer groove wall of the recess and the inner wall of the lamp shell, so that the central position of the lamp can be left for other devices, the light guide plate is located above the PCBA board, the side surface of the PCBA board close to the light guide plate is provided with a plurality of LED light sources, and the plurality of LED light sources are distributed in a ring shape along the edge of the PCBA board, so that the LED light source is top light, and the LED light source is distributed in a ring shape according to the PCBA board, which is conducive to transmitting light energy to the light guide plate, so that the luminous flux value of the LED light source can be ensured, the limitation of the lamp structure is overcome, a certain space is left for arranging other devices, the performance is ensured, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a sectional view of the ultra-thin annular large-space light emitting structure of the present application;

[0018] Figure 2 It is a structure schematic view of the light guide plate of the ultra-thin annular large-space light emitting structure of the present application;

[0019] Figure 3 It is a structure schematic view of the ultra-thin annular large-space light emitting structure of the present application; Figure 2 It is an enlarged view of A in the middle;

[0020] Figure 4 It is a structure schematic view of the ultra-thin annular large-space light emitting structure of the present application;

[0021] Figure 5 It is partial structure diagram of the super-thin annular large-space light-emitting structure of the utility model;

[0022] Label explanation:

[0023] 1, lamp shell; 11, lampshade; 12, cover plate; 121, groove;

[0024] 2, light guide plate; 21, light source receiving surface; 211, strip-shaped protrusion; 22, light reflection surface; 221, optical dot; 23, reflection skin;

[0025] 3, PCBA board;

[0026] 4, annular cavity;

[0027] 5, LED light source;

[0028] 6, 3M adhesive layer. DETAILED DESCRIPTION

[0029] To explain the technical content, the purpose and the effect of the utility model in detail, the following will be explained by combining with the embodiment and the drawings.

[0030] Please refer to Figure 1 The technical scheme adopted by the utility model is:

[0031] A super-thin annular large-space light-emitting structure, comprising a lamp shell, a light guide plate and an annular PCBA board are arranged inside the lamp shell, an outer bottom surface of the lamp shell is recessed to form a groove towards the inside of the lamp shell, an annular cavity for placing the PCBA board is formed between the outer groove wall of the groove and the inner wall of the lamp shell, the light guide plate is located above the PCBA board, a plurality of LED light sources are arranged on the side surface of the PCBA board close to the light guide plate, and the plurality of LED light sources are annularly distributed along the edge of the PCBA board.

[0032] From the above description, the utility model has the beneficial effects that:

[0033] The scheme sets the annular PCBA board, the outer bottom surface of the lamp shell is recessed to form a groove inside the lamp shell, and the outer groove wall and the inner wall of the lamp shell form an annular cavity for placing the PCBA board, so that the central position of the lamp can be left for other devices, the light guide plate is located above the PCBA board, a plurality of LED light sources are arranged on the side surface of the PCBA board close to the light guide plate, and the plurality of LED light sources are annularly distributed along the edge of the PCBA board. Such LED light source is top light, and the LED light source is annularly distributed according to the PCBA board, which is conducive to transmitting light energy to the light guide plate, so that the luminous flux value of the LED light source can be ensured, the limitation of the lamp structure is overcome, and a certain space is left for arranging other devices, the performance is ensured, and the cost is reduced.

[0034] Further, the cross-sectional shape of the light guide plate is U-shaped, and the U-shaped opening of the light guide plate faces the PCBA board.

[0035] Further, the bottom surface of the opening end of the light guide plate is a light source receiving surface of the LED light source, the light source receiving surface is located directly above the plurality of LED light sources, and a plurality of strip-shaped protrusions are arranged on the light source receiving surface.

[0036] As can be seen from the above description, the light source receiving surface is provided with a plurality of strip-shaped protrusions, which can help avoid the problem of uniformity caused by the generation of light source bright spots.

[0037] Further, the light source receiving surface is annular, and the plurality of strip-shaped protrusions form a circumferentially distributed corrugated surface.

[0038] As can be seen from the above description, the light source receiving surface is provided with a plurality of strip-shaped protrusions, and the plurality of strip-shaped protrusions form a circumferentially distributed corrugated surface, which can help avoid the problem of uniformity caused by the generation of light source bright spots.

[0039] Further, the inner surface of the opening end of the light guide plate is a light reflection surface of the LED light source, and optical dots are arranged on the light reflection surface.

[0040] As can be seen from the above description, by arranging optical dots on the light reflection surface, the light reflection efficiency can be improved, and the brightness can be enhanced.

[0041] Further, the outer edge of the light guide plate is provided with a reflective skin.

[0042] As can be seen from the above description, the outer edge of the light guide plate is provided with a reflective skin, which can avoid light loss.

[0043] Further, the outer surface of the light guide plate and the inner wall of the lamp shell are connected through a 3M adhesive layer.

[0044] Further, the number of the LED light sources is eight, and the eight LED light sources are equiangularly distributed along the edge of the PCBA board.

[0045] As can be seen from the above description, the LED light source designed in the scheme can be reduced from the original 12 to 8, which optimizes the cost, has the advantages of few structural parts, thin whole lamp thickness, high space utilization, high brightness, low cost and the like.

[0046] Further, the lamp shell comprises a cover plate and a lampshade with an opening at one end face, the cover plate is arranged at the opening of the lampshade, the recess is formed by the cover plate being recessed towards the inside of the lampshade, and the annular cavity is formed between the outer groove wall of the recess and the inner wall of the lampshade.

[0047] Further, the lampshade and the cover plate are fixed by ultrasonic welding.

[0048] Please refer to Figures 1 to 5 , the first embodiment of the utility model is:

[0049] Please refer to Figure 1 and Figure 5 , a kind of ultra-thin annular large space light emitting structure, including lamp shell 1, the inside of the lamp shell 1 is equipped with light guide plate 2 and annular PCBA board 3, the outer bottom surface of the lamp shell 1 is recessed to form recess 121 towards the inside of the lamp shell 1, annular cavity 4 for placing PCBA board 3 is formed between the outer groove wall of the recess 121 and the inner wall of the lamp shell 1, the light guide plate 2 is located above PCBA board 3, the PCBA board 3 is equipped with a plurality of LED light sources 5 on the side surface close to light guide plate 2, a plurality of the LED light sources 5 are annularly distributed along the edge of PCBA board 3.

[0050] Please refer to Figure 1 , the cross-sectional shape of the light guide plate 2 is U-shaped, and the U-shaped opening of the light guide plate 2 faces the PCBA board 3.

[0051] Please refer to Figure 1 , Figure 2 and Figure 3 , the bottom surface of the opening end of the light guide plate 2 is the light source receiving surface 21 of the LED light source 5, the light source receiving surface 21 is located directly above the plurality of LED light sources 5, and the light source receiving surface 21 is provided with a plurality of strip-shaped protrusions 211.

[0052] Please refer to Figure 2 , the shape of the light source receiving surface 21 is circular, and a plurality of the strip-shaped protrusions 211 form a corrugated surface distributed along the circumference.

[0053] Please refer to Figure 1 and Figure 2The inner surface of the open end of the light guide plate 2 is a light reflection surface 22 of the LED light source 5, and the light reflection surface 22 is provided with optical dots 221 (i.e. semicircular blind holes of different sizes).

[0054] Please refer to Figure 1 The outer edge of the light guide plate 2 is provided with a reflective skin 23, i.e. a skin texture is etched on the outer edge of the light guide plate 2.

[0055] Please refer to Figure 1 The outer surface of the light guide plate 2 is connected to the inner wall of the lamp shell 1 through a 3M adhesive layer 6.

[0056] The number of the LED light sources 5 is eight, and the eight LED light sources 5 are distributed along the edge of the PCBA board 3 at equal angles.

[0057] Please refer to Figure 1 and Figure 4 The lamp shell 1 includes a cover plate 12 and a lamp shade 11 having an opening at one end face, the cover plate 12 is arranged on the opening of the lamp shade 11, the recess 121 is formed by the cover plate 12 being recessed towards the inside of the lamp shade 11, and the annular cavity 4 is formed between the outer groove wall of the recess 121 and the inner wall of the lamp shade 11.

[0058] The lamp shade 11 and the cover plate 12 are fixed by ultrasonic welding.

[0059] In this embodiment, taking a circular car logo lamp as an example, the diameter is about 110 mm, the thickness is about 25 mm, and the space is small; the PCBA board 3 is designed in a ring shape and is locked on the lamp shell 1 by screws, and eight top-emitting LED light sources 5 are distributed in a ring shape on the PCBA board 3 (the existing structure is a matrix arrangement of 12 LED light sources 5); a ring-shaped “inverted U-shaped” light guide plate 2 is designed above the LED light source 5, the light source receiving surface 21 of the light guide plate 2 is designed as a corrugated surface, the outer edge of the light guide plate 2 is designed as a high-reflective skin 23, the light reflection surface 22 of the light guide plate 2 is designed as optical dots 221, and the light guide plate 2 is bonded on the lamp shade 11 by 3M glue, a space (i.e. the recess 121) is left in the central position of the cover plate 12, other devices can be installed, and the lamp shade 11 and the cover plate 12 are sealed by ultrasonic welding to complete the assembly of the whole lamp.

[0060] Compared with the existing structure, the structure designed in the scheme reduces the number of the light reflection plate and the diffusion plate, the structure assembly is simple, the number of the LED light sources 5 is reduced from 12 to 8, the cost is optimized, and the structure has the advantages of fewer structural parts, thinner thickness of the whole lamp, high space utilization rate, high brightness, and low cost.

[0061] In summary, the utility model provides a kind of super thin annular large space light emitting structure, by setting annular PCBA board, the outer bottom surface of lamp shell is recessed to form recess towards lamp shell interior, annular cavity for placing PCBA board is formed between the outer groove wall of recess and the inner wall of lamp shell, so as to give the position of the center of lamp to other devices, light guide plate is located above PCBA board, a plurality of LED light sources are equipped on the side surface of PCBA board close to light guide plate, a plurality of LED light sources are annularly distributed along the edge of PCBA board, such LED light source is top light emitting, and LED light source is annularly distributed according to PCBA board, beneficial to transmit light energy to light guide plate, so as to ensure the lumen value of LED light source, not only overcome the limitation of lamp structure, but also can give certain space to arrange other devices, ensure performance, and reduce cost.

[0062] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent transformation, direct or indirect application in related technical field using the contents of the utility model specification and drawings is also included in the patent protection range of the utility model.

Claims

1. An ultrathin annular large-space light-emitting structure, characterized in that, The device includes a lamp housing, inside which a light guide plate and an annular PCBA board are provided. One outer bottom surface of the lamp housing is recessed into the interior of the lamp housing to form a groove. The outer wall of the groove and the inner wall of the lamp housing form an annular cavity for placing the PCBA board. The light guide plate is located above the PCBA board. Several LED light sources are provided on the side of the PCBA board near the light guide plate. The several LED light sources are distributed in a ring along the edge of the PCBA board.

2. The ultrathin annular large-space light-emitting structure according to claim 1, characterized in that, The light guide plate has a U-shaped cross-section, and the U-shaped opening of the light guide plate faces the PCBA board.

3. The ultrathin annular large-space light-emitting structure according to claim 2, characterized in that, The bottom surface of the opening end of the light guide plate is the light source receiving surface of the LED light source. The light source receiving surface is located directly above several LED light sources, and several strip-shaped protrusions are provided on the light source receiving surface.

4. The ultrathin annular large-space light-emitting structure according to claim 3, characterized in that, The light source receiving surface is annular in shape, and several strip-shaped protrusions form a corrugated surface distributed along the circumference.

5. The ultrathin annular large-space light-emitting structure according to claim 2, characterized in that, The inner surface of the opening end of the light guide plate is a light-reflecting surface of the LED light source, and optical dots are provided on the light-reflecting surface.

6. The ultrathin annular large-space light-emitting structure according to claim 2, characterized in that, The outer edge of the light guide plate is provided with a reflective texture.

7. The ultrathin annular large-space light-emitting structure according to claim 1, characterized in that, The outer surface of the light guide plate is connected to the inner wall of the lamp housing by a 3M adhesive layer.

8. The ultrathin annular large-space light-emitting structure according to claim 1, characterized in that, The number of LED light sources is eight, and the eight LED light sources are distributed in a ring at equal angles along the edge of the PCBA board.

9. The ultrathin annular large-space light-emitting structure according to claim 1, characterized in that, The lamp housing includes a cover plate and a lampshade with an opening on one end face. The cover plate covers the opening of the lampshade. The groove is formed by the cover plate recessing into the lampshade. The annular cavity is formed between the outer wall of the groove and the inner wall of the lampshade.

10. The ultrathin annular large-space light-emitting structure according to claim 9, characterized in that, The lampshade and the cover plate are fixed together by ultrasonic welding.

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