Double-shot molding lampshade and front engine hood lamp

Abstract

The utility model provides a double-shot molding lampshade and a front engine hood lamp, and belongs to the technical field of front engine hood lamps. The front engine hood lamp solves the problem that uniform light transmission can be achieved only by arranging an inner mask on an existing front engine hood lamp. The front engine hood lamp comprises a bottom cover, a PCB arranged on the bottom cover, an LED lamp arranged on the PCB and a double-color injection molding lampshade, the PCB and the LED lamp are located on the inner side of the double-color injection molding lampshade, and the LED lamp directly faces a light-transmitting area of the double-color injection molding lampshade. The double-color injection molding lampshade comprises a light transmitting layer and a light shielding layer arranged on the periphery of the light transmitting layer, the light transmitting layer is made of PC materials with a light diffusion function, the light shielding layer is made of electroplated ABS materials, and the light transmitting layer and the light shielding layer are integrally formed through the double-color injection molding process. The light transmitting layer is made of PC materials with a light diffusion function, light emitted by the LED lamp can be evenly diffused, an inner mask is omitted, the structure and assembly cost is reduced, the lampshade is integrally formed through the double-shot molding technology, and the injection molding percent of pass can be increased from 80% to 99% or above.

Description

TECHNICAL FIELD

[0001] The utility model belongs to front engine hood lamp technical field relates to a double -colored injection molding lamp shade and front engine hood lamp. BACKGROUND

[0002] The front engine hood lamp is external protrusion, and the protrusion height is not greater than 10mm according to GB11566, so the internal space is very limited, the distance between the LED light source and the lamp shade surface is too close, the distance between the LED and the light internal light diffusion layer is too close, the light uniformity is poor after lighting, the "grain feeling" is obvious, and there is visible dark area. The existing lamp shade scheme has the following several kinds:

[0003] Scheme one, the lamp shade adopts three color injection molding, the first color inside light diffusion layer is high haze smoked color PC, the second color outer surface is red transparent PC, and the third color is peripheral electroplating grade ABS or PC+ABS. Three color injection molding cost is high, and when the second color and the first color are injected, glue overflow and color mixing are prone to occur at the gate position, the injection molding and electroplating qualified rate is low, the comprehensive cost is very high, and the light uniformity problem after lighting cannot be solved.

[0004] Scheme two, the lamp shade adopts double color injection molding, the first color is red transparent PC, the second color is peripheral electroplating grade ABS or PC+ABS, and an inner cover is separately assembled on the inside, and the inner cover is a high haze smoked color PC light diffusion layer. The inner cover is assembled with the lamp shade in the form of hot riveting or welding, bonding and the like, the assembly process is complex, and special tooling is used; meanwhile, welding powder, welding slag and the like are prone to occur between the lamp shade and the inner cover, the light uniformity problem after lighting cannot be thoroughly solved, and the comprehensive cost is relatively high.

[0005] Scheme three, on the basis of scheme one or scheme two, the PCB uses a surface light source, and the number of LED chips is 2-3 times that of the existing scheme, so that the light uniformity problem after lighting can be solved, but the comprehensive cost is very high. UTILITY MODEL CONTENTS

[0006] The utility model aims at the above problems existing in the prior art, and provides a double color injection molding lamp shade without an inner cover. A front engine hood lamp with the double color injection molding lamp shade is also provided.

[0007] The utility model can achieve the purpose by the following technical scheme.

[0008] The double color injection molding lamp shade comprises a light transmission layer and a light shielding layer arranged at the periphery of the light transmission layer, the light transmission layer is made of a material with light diffusion function, the light shielding layer is made of a light shielding material, and the light transmission layer and the light shielding layer are integrally formed by a double color injection molding process.

[0009] In the double color injection molding lamp shade, the light transmission layer is made of PC material with light diffusion function.

[0010] In the above-mentioned double-color injection-molded lampshade, the light-shielding layer is made of electroplated ABS material.

[0011] In the above-mentioned double-color injection-molded lampshade, the light-transmitting layer is red. The light-transmitting area of the lampshade is red, which can not only shield the internal structural parts, but also uniformly diffuse the light emitted by the LED lamp. The static color adjustment when the lamp is not lit can be realized by adjusting the color of the light-transmitting layer material, and the color matching is easy and the seen is the obtained.

[0012] The front engine hood lamp comprises a bottom cover, a PCB board arranged on the bottom cover, an LED lamp arranged on the PCB board and the above-mentioned double-color injection-molded lampshade, the PCB board and the LED lamp are located on the inner side of the double-color injection-molded lampshade, and the LED lamp directly faces the light-transmitting area of the double-color injection-molded lampshade.

[0013] The area of the light-transmitting layer which is not covered by the light-shielding layer is the light-transmitting area, the area of the light-transmitting layer which is covered by the light-shielding layer is the non-light-transmitting area, the PCB board extends along the length direction of the light-transmitting area of the double-color injection-molded lampshade, and the LED lamp is arranged in sequence along the length direction of the PCB board.

[0014] In the above-mentioned front engine hood lamp, the side, where the bottom cover is connected with the front engine hood, is provided with an adhesive layer, and the bottom cover is attached to the front engine hood through the adhesive layer.

[0015] In the above-mentioned front engine hood lamp, the bottom cover is further provided with a bolt, and the bolt is threadedly connected with a threaded hole corresponding to the front engine hood. In the premise of convenient installation, the stability and reliability of the connection between the bottom cover and the front engine hood are further improved.

[0016] Compared with the prior art, the front engine hood lamp has the following advantages:

[0017] The light-transmitting layer is made of PC material with light diffusion function, can uniformly diffuse the light emitted by the LED lamp, saves the inner cover, reduces the structure and assembly cost, and solves the problem of shadow visibility when the automobile manufacturer visually or subjectively evaluates; since the inner cover is saved, the distance between the inner surface of the double-color injection-molded lampshade and the bottom cover is increased, the thickness of the light-transmitting layer and the bottom cover can be increased without increasing the thickness of the whole lamp, the feasibility of the injection molding process is improved, the injection molding pressure is reduced, and the injection molding stress is reduced; the lampshade is integrally formed through the double-color injection molding process, and the qualified rate of injection molding can be increased from 80% to more than 99%. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the sectional view of the front engine hood lamp provided by the utility model.

[0019] In the figure, 11, light transmission layer; 12, light shielding layer; 2, bottom cover; 3, PCB board; 31, LED lamp; 4, adhesive layer; 5, bolt. DETAILED DESCRIPTION

[0020] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0021] As Figure 1 shown, the front engine hood lamp comprises a bottom cover 2, a PCB board 3 arranged on the bottom cover 2, an LED lamp 31 arranged on the PCB board 3 and a double-color injection-molded lampshade, the PCB board 3 and the LED lamp 31 are located on the inner side of the double-color injection-molded lampshade, the region of the light transmission layer 11 not covered by the light shielding layer 12 is a light transmission region, the region of the light transmission layer 11 covered by the light shielding layer 12 is a non-light transmission region, and the LED lamp 31 directly faces the light transmission region of the double-color injection-molded lampshade.

[0022] In this embodiment, the lamp is in a strip shape, the PCB board 3 extends along the length direction of the light transmission region of the double-color injection-molded lampshade, and the LED lamp 31 is arranged in sequence along the length direction.

[0023] In order to facilitate the installation of the lamp on the front engine hood, as Figure 1 shown, the side of the bottom cover 2 corresponding to the front engine hood is provided with an adhesive layer 4, and the adhesive layer 4 is double-sided adhesive tape in this embodiment, and the bottom cover 2 is pasted on the front engine hood through the adhesive layer 4.

[0024] As Figure 1 shown, the bottom cover 2 is further provided with a bolt 5, and the bolt 5 is threadedly connected with a threaded hole corresponding to the front engine hood, thereby further improving the stability and reliability of the connection between the bottom cover 2 and the front engine hood under the premise of convenient installation.

[0025] As Figure 1 shown, the double-color injection-molded lampshade comprises a light transmission layer 11 and a light shielding layer 12 arranged on the periphery of the light transmission layer 11, the light shielding layer 12 is arranged around the periphery of the light transmission layer 11, and the light emitted by the LED lamp 31 can only be transmitted from the region of the light transmission layer 11 not blocked by the light shielding layer 12.

[0026] The light transmission layer 11 is made of PC material with light diffusion function, the light shielding layer 12 is made of electroplated ABS material, and the light transmission layer 11 and the light shielding layer 12 are integrally formed by using a double-color injection molding process.

[0027] The light transmission layer 11 is red in this embodiment, which can not only shield the internal structural parts, but also uniformly diffuse the light emitted by the LED lamp 31.

[0028] In other tests, the color of the light-transmitting layer 11 can also be other colors. By adjusting the color of the material of the light-transmitting layer 11, static color adjustment when the lamp is not lit can be realized, color matching is easy, and what is seen is what is obtained.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A dual-color injection-molded lampshade, characterized in that, It includes a light-transmitting layer (11) and a light-shielding layer (12) disposed around the light-transmitting layer (11). The light-transmitting layer (11) is made of a material with light-diffusing function, and the light-shielding layer (12) is made of a light-shielding material. The light-transmitting layer (11) and the light-shielding layer (12) are integrally formed by a two-color injection molding process.

2. The dual-color injection molded lampshade according to claim 1, characterized in that, The light-transmitting layer (11) is made of PC material with light diffusion function.

3. The dual-color injection molded lampshade according to claim 1 or 2, characterized in that, The light-shielding layer (12) is made of electroplated ABS material.

4. The dual-color injection molded lampshade according to claim 1 or 2, characterized in that, The light-transmitting layer (11) is red.

5. A front engine hood light fixture, characterized in that, Includes a bottom cover (2), a PCB board (3) disposed on the bottom cover (2), an LED lamp (31) disposed on the PCB board (3), and a dual-color injection molded lampshade as described in any one of claims 1-4, wherein the PCB board (3) and the LED lamp (31) are located inside the dual-color injection molded lampshade, and the LED lamp (31) is directly facing the light-transmitting area of ​​the dual-color injection molded lampshade.

6. The front engine hood lamp according to claim 5, characterized in that, The bottom cover (2) is provided with an adhesive layer (4) on the side that is in contact with the front engine hood, and the bottom cover (2) is attached to the front engine hood through the adhesive layer (4).

7. The front engine hood lamp according to claim 5 or 6, characterized in that, The bottom cover (2) is also provided with bolts (5), which are threadedly connected to the threaded holes corresponding to the front engine hood.

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