Dustproof backlight module

Abstract

The utility model relates to the technical field of backlight modules, and discloses a dustproof backlight module which comprises a front frame and a rear frame, a module is placed between the front frame and the rear frame, the module comprises an upper diffuser, a prism is arranged at the lower end of the upper diffuser, a lower diffuser is arranged at the lower end of the prism, a light guide plate is arranged at the lower end of the lower diffuser, and the light guide plate is arranged on the front frame. A reflecting plate is arranged at the lower end of the light guide plate, a dustproof part is arranged between the front frame and the rear frame and comprises a filtering particle block, a groove is formed in the inner side of the upper end of the rear frame, the filtering particle block is located in the groove, and a covering strip is arranged on the rear frame; according to the novel dustproof backlight module applied to the dust prevention, by arranging the dustproof piece, dust in gaps of the module mostly enters through gaps between the front frame and the rear frame, and at present, the dust is filtered through the filtering particle blocks and is left in the filtering particle blocks, so that the dust is prevented from entering the gaps of the module, and the service life of the module is prolonged. Therefore, the dustproof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight modules, in particular to a dustproof backlight module. Background Art

[0002] The function of the backlight module is to supply sufficient light source so that it can display images normally. The backlight module is the provider of light source for the liquid crystal display.

[0003] However, the backlight module is composed of an upper diffuser, a lower diffuser, a reflector, a prism, etc. There are gaps between the joints. Dust will enter the gaps during use, and the dust will affect the use and display of the backlight module.

[0004] In order to solve the above problems, this application proposes a dustproof backlight module. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a dustproof backlight module to at least solve one of the problems raised by the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dustproof backlight module, comprising a front frame and a rear frame, a module is placed between the front frame and the rear frame, the module comprises an upper diffuser, a prism is arranged at the lower end of the upper diffuser, a lower diffuser is arranged at the lower end of the prism, a light guide plate is arranged at the lower end of the lower diffuser, a reflective plate is arranged at the lower end of the light guide plate, a dustproof part is arranged between the front frame and the rear frame, the dustproof part comprises a filter particle block, a groove is opened on the inner side of the upper end of the rear frame, the filter particle block is arranged inside the groove, a covering strip is arranged on the rear frame, the covering strip is matched with the upper edge of the upper diffuser, and a sealing strip is coated on the lower end of the covering strip located on the inner side of the groove.

[0007] A further technical improvement of the utility model is that a card slot is provided at the upper end of the rear frame, a card strip is fixedly connected to the lower end of the front frame, a sealing strip is fixedly connected inside the card slot, and the lower end of the card strip is arranged to abut against the upper end of the sealing strip.

[0008] A further technical improvement of the utility model is that a filter groove is provided on the rear frame at the lower end of the covering strip, and filter cotton is placed in the filter groove.

[0009] A further technical improvement of the utility model is that an inner edge of the front frame is provided with an inclined surface, and the bottom end of the inclined surface is arranged to abut against the upper end surface of the upper diffuser.

[0010] A further technical improvement of the present invention is that the covering strip is L-shaped and symmetrically arranged at both ends, and the covering strip is elastic.

[0011] A further technical improvement of the utility model is that the density of the filter cotton is greater than that of the filter particle block.

[0012] The present invention provides a dustproof backlight module, which has the following beneficial effects:

[0013] This new type is applied to dust-proof backlight modules. By setting up dust-proof parts, the dust between the gaps of the modules mostly enters through the gaps between the front frame and the rear frame. Now, the dust is filtered through the filter particle block, and the dust is retained inside the filter particle block, thereby preventing dust from entering the gaps between the modules, thereby achieving a dust-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the partial cross-section structure of the front frame and the rear frame of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the front frame, rear frame and module of the utility model;

[0018] Figure 4 for Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 5 for Figure 3 Enlarged structural diagram at B in the middle.

[0020] In the figure: 1. front frame; 2. rear frame; 3. upper diffuser; 4. prism; 5. lower diffuser; 6. light guide plate; 7. reflector; 8. card slot; 9. sealing strip; 10. card strip; 11. groove; 12. filter particle block; 13. covering strip; 14. sealing strip; 15. filter slot; 16. filter cotton; 17. inclined plane. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5A dustproof backlight module comprises a front frame 1 and a rear frame 2, a module is placed between the front frame 1 and the rear frame 2, the module comprises an upper diffuser 3, a prism 4 is arranged at the lower end of the upper diffuser 3, a lower diffuser 5 is arranged at the lower end of the prism 4, a light guide plate 6 is arranged at the lower end of the lower diffuser 5, a reflector 7 is arranged at the lower end of the light guide plate 6, a dustproof part is arranged between the front frame 1 and the rear frame 2, the dustproof part comprises a filter particle block 12, a groove 11 is opened on the inner side of the upper end of the rear frame 2, the filter particle block 12 is arranged inside the groove 11, a covering strip 13 is arranged on the rear frame 2, the covering strip 13 is matched with the upper edge of the upper diffuser 3, and a sealing strip 14 is coated on the lower end of the covering strip 13 located on the inner side of the groove 11.

[0023] Specific working principle and implementation method: the front frame 1 and the rear frame 2 are fixed by screws, the module arranged between the front frame 1 and the rear frame 2 will emit light through the light bar, and the dustproof part arranged between the front frame 1 and the rear frame 2 can wrap the edge of the module, thereby achieving the dustproof effect, mainly through the filter particle block 12 inside the groove 11 at the upper end of the rear frame 2, the dust in the gap between the front frame 1 and the rear frame 2 can be filtered through the filter particle block 12, and a cover strip 13 is arranged on the rear frame 2, and the cover strip 13 The inner side of the upper end is located at the edge of the upper end surface of the upper diffuser 3, and the lower end of the covering strip 13 is fixed by the sealing strip 14, and then the gap at the lower end is closed by the sealing strip 14, thereby reducing the entry of dust between the module gaps; the advantage of this design is that the dust between the module gaps mostly enters through the gaps between the front frame 1 and the rear frame 2, and now the dust is filtered by the filtering particle block 12, and the dust is retained inside the filtering particle block 12, thereby preventing dust from entering the gaps between the modules, thereby achieving a dustproof effect.

[0024] like Figure 4 As shown, a card slot 8 is provided at the upper end of the rear frame 2, a card strip 10 is fixedly connected to the lower end of the front frame 1, a sealing strip 9 is fixedly connected inside the card slot 8, and the lower end of the card strip 10 is arranged to abut against the upper end of the sealing strip 9. When the front frame 1 and the rear frame 2 are connected to each other, they are butted together through the card slot 8 and the card strip 10, and a sealing strip 9 is fixed in the card slot 8. The sealing strip 9 is deformed when being pressed by the installation of the front frame 1, thereby sealing the outermost side between the front frame 1 and the rear frame 2, thereby improving the dustproof effect.

[0025] like Figure 4 As shown, a filter groove 15 is provided on the rear frame 2 at the lower end of the covering strip 13, and filter cotton 16 is placed in the filter groove 15. A filter groove 15 is provided on the rear frame 2 at the lower end of the covering strip 13, and filter cotton 16 is placed in the filter groove 15. The filter cotton 16 can intercept dust in the air entering from the outside again, thereby achieving a dust-proof effect.

[0026] like Figure 4As shown, an inner edge of the front frame 1 is provided with an inclined surface 17, and the bottom end of the inclined surface 17 is set against the upper end surface of the upper diffuser 3. The inclined surface 17 can expand the angle of the corner, and expand the angle to prevent the side wall of the front frame 1 from reflecting light on the upper diffuser 3, thereby enabling the light and shadow effect of the upper diffuser 3.

[0027] like Figure 4 As shown, the covering strip 13 is L-shaped and symmetrically arranged at both ends. The covering strip 13 is elastic. The L-shaped covering strip 13 can reduce the upper end gap of the filter cotton 16, and heat is generated when the module is working. The heat is absorbed by the covering strip 13 and thermal expansion is generated. The generated expansion coefficient is small, which can enable the module to achieve an internal closed effect when it is working.

[0028] like Figure 4 As shown, the density of the filter cotton 16 is greater than that of the filter particle block 12. The dust particles that can pass through the filter particle block 12 cannot pass through the filter cotton 16. In this way, the dust is blocked outside the module through two-way filtration.

[0029] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A dustproof backlight module, comprising a front frame (1) and a rear frame (2), wherein a module is placed between the front frame (1) and the rear frame (2), It is characterized in that The module comprises an upper diffuser (3), a prism (4) is arranged at the lower end of the upper diffuser (3), a lower diffuser (5) is arranged at the lower end of the prism (4), a light guide plate (6) is arranged at the lower end of the lower diffuser (5), a reflector plate (7) is arranged at the lower end of the light guide plate (6), a dustproof part is arranged between the front frame (1) and the rear frame (2), the dustproof part comprises a filter particle block (12), a groove (11) is provided on the inner side of the upper end of the rear frame (2), the filter particle block (12) is arranged inside the groove (11), a covering strip (13) is arranged on the rear frame (2), the covering strip (13) is matched with the upper edge of the upper diffuser (3), and a sealing strip (14) is coated on the lower end of the covering strip (13) located inside the groove (11).

2. The dustproof backlight module according to claim 1, It is characterized in that A card slot (8) is provided at the upper end of the rear frame (2); a card strip (10) is fixedly connected to the lower end of the front frame (1); a sealing strip (9) is fixedly connected inside the card slot (8); and the lower end of the card strip (10) is arranged to abut against the upper end of the sealing strip (9).

3. The dustproof backlight module according to claim 1, It is characterized in that A filter groove (15) is provided on the rear frame (2) at the lower end of the cover strip (13), and filter cotton (16) is placed in the filter groove (15).

4. The dustproof backlight module according to claim 1, It is characterized in that An inclined surface (17) is provided on the inner edge of the front frame (1), and the bottom end of the inclined surface (17) is arranged to abut against the upper end surface of the upper diffuser (3).

5. The dustproof backlight module according to claim 1, It is characterized in that The covering strip (13) is arranged in an L shape, and the two ends are arranged symmetrically, and the covering strip (13) is arranged elastically.

6. The dustproof backlight module according to claim 3, It is characterized in that The density of the filter cotton (16) is greater than that of the filter particle block (12).

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