Backlight structure capable of preventing light leakage and vehicle-mounted display module

Abstract

The utility model discloses a light leakage prevention backlight structure which comprises a metal plate shell and shading glue, and a buckle groove is formed in the metal plate shell. The shading glue comprises white glue and black glue, the black glue is attached to the white glue, the shading glue is attached to the side, facing the buckle groove, of the white glue, and the size of the white glue is matched with that of the buckle groove. The whole black glue is attached to the buckle groove and the edge of the buckle groove, the white glue reflects light, the black glue absorbs light transmitted from the edge of the white glue, the problem of light leakage at the edge of the white glue is solved, and the product quality is improved. In addition, the utility model further discloses a vehicle-mounted display module.

Description

Technical Field

[0001] The utility model relates to the field of backlights, and particularly to a backlight structure for preventing light leakage and a vehicle-mounted display module. Background Art

[0002] For the assembly reliability and no abnormal noise of the backlight source of the vehicle-mounted display module, buckle grooves are usually opened on the sheet metal housing of the backlight source to buckle with the light guide plate and the functional film respectively for limit fixation. Since the current vehicle-mounted display modules are getting larger and larger, the required matching buckle grooves are also getting larger, but the buckle grooves on the backlight will leak light.

[0003] In the prior art, the backlight is used for lighting, and light will penetrate from the buckle groove. Workers use black and white glue to completely wrap the buckle groove to prevent light leakage from the backlight. Since the black and white glue is composed of white glue and black glue of the same size, the black glue is an opaque black glue layer, and the size of the white glue is adapted to the buckle groove, so that light is emitted from the side of the white glue, resulting in light leakage at the side of the black and white glue. Summary of the Utility Model

[0004] An object of the utility model is to overcome the deficiencies in the prior art and provide a backlight structure for preventing light leakage and a vehicle-mounted display module.

[0005] The object of the utility model is achieved by the following technical solutions:

[0006] A backlight structure for preventing light leakage, comprising: a sheet metal housing and a plurality of light-shielding adhesives. At least one buckle groove is opened on the sheet metal housing, and the buckle groove is used for avoiding a buckle; one light-shielding adhesive corresponds to one buckle groove, and the light-shielding adhesive comprises black glue and white glue, and the white glue is adapted to the buckle groove; the black glue and the white glue respectively have opposite adhesive surfaces and non-adhesive surfaces, the adhesive surface of the white glue is arranged on one side of the buckle groove, and the adhesive surface of the black glue is bonded to the non-adhesive surface of the white glue; the length of the black glue is greater than the length of the buckle groove, and the width of the black glue is greater than the width of the buckle groove; the black glue is bonded to the edges of the white glue and the buckle groove.

[0007] In one of the embodiments, the number of the buckle grooves is 3, the number of the light-shielding adhesives is 3, and one light-shielding adhesive corresponds to one buckle groove one by one.

[0008] In one of the embodiments, an FPC clamping member is arranged on the sheet metal housing, and the FPC clamping member is used for clamping an FPC.

[0009] In one of the embodiments, a plurality of support columns extend along the thickness direction on the sheet metal housing, and the support columns are used for abutting against other parts.

[0010] In one embodiment, a silica gel layer is provided on the abutting end of the support column.

[0011] In one embodiment, a plurality of studs extend from one side of the sheet metal housing, and each stud is independently provided with an internal thread provided therein.

[0012] In one embodiment, the number of the studs is 7.

[0013] In one embodiment, alignment lines are provided at the edge of the snap groove of the sheet metal housing, and the alignment lines are used for the alignment and attachment of the light-shielding adhesive.

[0014] In one embodiment, a light source fixing seat is provided on one side of the sheet metal housing away from the light-shielding adhesive, and the light source fixing seat is used for fixing the light source.

[0015] A vehicle-mounted display module includes the aforementioned light leakage-proof backlight structure.

[0016] Compared with the prior art, the present utility model has at least the following advantages:

[0017] The light leakage-proof backlight structure of the present utility model solves the problem of light leakage at the edge of the white glue and improves the product quality by providing a sheet metal housing and a light-shielding adhesive. A snap groove is formed in the sheet metal housing. The light-shielding adhesive includes white glue and black glue. The black glue is adhered to the white glue. The light-shielding adhesive is adhered to the snap groove on one side of the white glue. The size of the white glue is adapted to the snap groove. The black glue is entirely adhered to the snap groove and its edge. The white glue reflects light, and the black glue absorbs the light transmitted from the edge of the white glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments.

[0019] Figure 1' It is a schematic structural diagram of a light-shielding adhesive in the prior art;

[0020] Reference signs:

[0021] Light-shielding adhesive 12’, black glue 121’, white glue 122’.

[0022] Figure 1 It is a schematic structural diagram of the light leakage-proof backlight structure in an embodiment of the present utility model;

[0023] Figure 2 It is a schematic structural diagram of the light-shielding adhesive in an embodiment of the present utility model.

[0024] Reference signs:

[0025] Sheet metal housing 10, snap groove 11, light-shielding glue 12, black glue 121, white glue 122, FPC clamping member 13, support post 14, silicone layer 15, stud 16, alignment line 17. Detailed implementation manner

[0026] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0027] This application proposes a light-leakage prevention backlight structure. Please refer to Figure 1 and Figure 2 , including: a sheet metal housing 10 and a light-shielding glue 12. A snap groove 11 is provided on the sheet metal housing 10, and the snap groove 11 is used to avoid the snap. The light-shielding glue 12 includes a white glue 122 and a black glue 121. The black glue 121 and the white glue 122 respectively have opposite adhesive surfaces and non-adhesive surfaces. The adhesive surface of the white glue 122 is arranged on one side of the snap groove 11, and the adhesive surface of the black glue 121 is bonded to the non-adhesive surface of the white glue 122. The light-shielding glue 12 is attached to the snap groove 11 on the side of the white glue 122, and the size of the white glue 122 is adapted to the snap groove 11. The length of the black glue 121 is greater than the length of the snap groove 11, and the width of the black glue 121 is greater than the width of the snap groove 11. The black glue 121 is entirely attached to the snap groove 11 and its edge. The white glue 122 reflects light, while the black glue 121 absorbs the light transmitted from the edge of the white glue 122, solving the problem of light leakage at the edge of the white glue 122 and improving the product quality.

[0028] It should be noted that, please refer to Figure 1' , Figure 1' is a schematic structural diagram of the light-shielding glue in the prior art. In the prior art, the black glue 121' and the white glue 122' are of the same size, and the black glue 121' fails to cover the edge of the snap groove for light transmission, and the light still emits from the edge of the white glue. In this application, the length and width of the black glue are increased, and the enlarged black glue can absorb the light emitted from the edge of the white glue, improving the light impermeability of the light-shielding glue.

[0029] A light source fixing seat is provided on the side of the sheet metal housing 10 away from the light-shielding glue 12, and the light source fixing seat is used to fix the light source. Among them, the number of the snap grooves 11 on the sheet metal housing 10 is set according to the actual fixing situation, and one light-shielding glue 12 corresponds to one snap groove 11.

[0030] Further, the number of the snap grooves 11 is 3, and the number of the light-shielding glues 12 is 3. One light-shielding glue 12 corresponds to one snap groove 11 one by one.

[0031] In an embodiment, an FPC clamping member 13 is provided on the sheet metal housing 10, and the FPC clamping member 13 is used to clamp the FPC. When the FPC is folded onto the sheet metal housing 10 and the FPC passes through the FPC clamping member 13, the FPC clamping member 13 locks the FPC to prevent the FPC from automatically resetting.

[0032] Please refer to Figure 1 , on the sheet metal housing 10, a plurality of support columns 14 extend in the thickness direction. The support columns 14 are used to abut against other parts, and a certain space is left on this side of the sheet metal housing 10 to accommodate other parts.

[0033] Furthermore, a silica gel layer 15 is provided on the abutting end of the support column 14. The silica gel layer 15 has a certain elasticity and can abut better.

[0034] Please refer to again Figure 1 , on one side of the sheet metal housing 10, a plurality of studs 16 extend. An internal thread is provided in the studs 16 for screwing connection with the vehicle body. The provision of the studs 16 can enhance the connection reliability between the sheet metal housing 10 and the vehicle body. Moreover, the studs 16 are independently arranged and do not interfere with each other.

[0035] Furthermore, the number of the studs 16 is 7.

[0036] In addition, on the edge of the snap groove 11 of the sheet metal housing 10, an alignment line 17 is provided. The alignment line 17 is used for the alignment and attachment of the light-shielding adhesive 12, and the use of the alignment line 17 improves the attachment accuracy of the light-shielding adhesive 12.

[0037] Preferably, the sheet metal housing 10 includes an iron frame and a rubber plate, and the iron frame is sleeved on the rubber plate.

[0038] This application also proposes a vehicle-mounted display module, including the aforementioned light-leakage-proof backlight structure, and the light-leakage-proof backlight structure is used for the backlight.

[0039] The above-described embodiments merely represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. An anti-light-leakage backlight structure, characterized in that, Comprising: A sheet metal housing, at least one snap groove is formed on the sheet metal housing, and the snap groove is used to avoid a snap; And A plurality of light-shielding adhesives, one light-shielding adhesive corresponding to one snap groove, the light-shielding adhesive comprising a black adhesive and a white adhesive, the white adhesive being adapted to the snap groove; the black adhesive and the white adhesive respectively have opposite adhesive surfaces and non-adhesive surfaces, the adhesive surface of the white adhesive is arranged on one side of the snap groove, and the adhesive surface of the black adhesive is bonded to the non-adhesive surface of the white adhesive; the length of the black adhesive is greater than the length of the snap groove, and the width of the black adhesive is greater than the width of the snap groove; the black adhesive is bonded to the edges of the white adhesive and the snap groove.

2. The light leakage prevention backlight structure according to claim 1, wherein, The number of the snap grooves is 3, and the number of the light-shielding adhesives is 3, and one light-shielding adhesive corresponds to one snap groove.

3. The light leakage prevention backlight structure according to claim 1, characterized in that, An FPC clamping member is arranged on the sheet metal housing, and the FPC clamping member is used to clamp an FPC.

4. The light leakage prevention backlight structure according to claim 1, wherein A plurality of support columns extend in the thickness direction of the sheet metal housing, and the support columns are used to abut against other parts.

5. The light leakage prevention backlight structure according to claim 4, wherein, A silica gel layer is arranged on the abutting end of the support column.

6. The light leakage prevention backlight structure according to claim 1, wherein A plurality of stud bolts extend from one side of the sheet metal housing, each stud bolt is independently arranged, and internal threads are arranged in the stud bolts.

7. The light leakage prevention backlight structure according to claim 6, characterized in that, The number of the stud bolts is 7.

8. The light leakage prevention backlight structure according to claim 1, wherein Alignment lines are arranged at the edges of the snap grooves on the sheet metal housing, and the alignment lines are used for alignment and attachment of the light-shielding adhesives.

9. The light leakage prevention backlight structure according to claim 1, characterized in that, A light source fixing seat is arranged on the side of the sheet metal housing far from the light-shielding adhesive, and the light source fixing seat is used to fix a light source.

10. A vehicle-mounted display module, characterized in that, Comprising the light leakage-proof backlight structure according to any one of claims 1 to 9.

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