Backlight source for navigation display

Abstract

The utility model provides a navigation display backlight source, and relates to the technical field of backlight sources. A navigation display backlight source comprises a backlight module, the backlight module comprises a first frame, a second frame, a reflector plate, a light guide plate, a lower diffusion plate, a prismatic lens, an upper diffusion plate and a third frame, the second frame is installed on the first frame, the reflector plate is fixedly connected between the first frame and the second frame, the light guide plate is installed on the second frame, and the prismatic lens is fixedly connected between the light guide plate and the third frame. A lower diffusion sheet is laid on the light guide sheet, a prismatic lens is laid on the lower diffusion sheet, an upper diffusion sheet is laid on the prismatic lens, a third frame is fixedly connected to the second frame, and the third frame is located on the upper portion of the upper diffusion sheet. The moisture-proof diaphragm can isolate moisture and prevent the moisture from permeating into the backlight module, meanwhile, the waterproof edge sealing glue can prevent the moisture from permeating into the backlight module from edge gaps, the backlight module is prevented from being damaged, and the moisture-proof effect of the backlight module is achieved.

Description

Technical Field

[0001] The utility model provides a backlight for marine display, which relates to the technical field of backlights. Background Technique

[0002] The backlight module is one of the key components of the liquid crystal display panel. Its function is to supply sufficient brightness and evenly distributed light sources so that it can display images normally. Liquid crystal display is a passive light-emitting element. The display screen itself does not emit light, but is illuminated by the backlight system below it. The combination of the backlight and the liquid crystal display screen constitutes the liquid crystal display module.

[0003] The existing backlight module does not have a moisture-proof function. When applied to a display for navigation, since the navigation environment is rich in water vapor, the backlight module is prone to moisture, resulting in short circuit or even damage of the backlight module. Being in a humid environment for a long time is also likely to shorten the service life of the backlight module.

[0004] Therefore, it is necessary to provide a backlight for marine display with a moisture-proof function. Content of the Utility Model

[0005] In order to overcome the shortcomings that the existing backlight module does not have a moisture-proof function and is prone to moisture in marine display, resulting in short circuit or even damage of the backlight module and shortening the service life of the backlight module, the utility model provides a backlight for marine display with a moisture-proof function.

[0006] In order to achieve the above object, the embodiment of the utility model provides the following technical solution: A backlight for marine display, comprising a backlight module, the backlight module includes a first frame, a second frame, a reflective sheet, a light guide plate, a limiting plate, a conductive plate, a light source lamp, a lower diffusion sheet, a prism sheet, an upper diffusion sheet and a third frame. The second frame is installed on the first frame, a reflective sheet is fixedly connected between the first frame and the second frame, a light guide plate is installed on the second frame, a lower diffusion sheet is pasted on the light guide plate, a prism sheet is pasted on the lower diffusion sheet, an upper diffusion sheet is pasted on the prism sheet, a third frame is fixedly connected to the second frame, the third frame is located above the upper diffusion sheet, a limiting plate is installed on one side edge of the second frame, a conductive plate is installed on the second frame, a plurality of light source lamps are installed on the conductive plate, and the light source lamps are embedded in the limiting plate. It further includes a moisture-proof diaphragm and a waterproof sealing glue. The moisture-proof diaphragm is jointly pasted on the upper diffusion sheet and the third frame, and the waterproof sealing glue is filled at the edge connection of the first frame and the third frame, and the waterproof sealing glue bonds the edge of the moisture-proof diaphragm.

[0007] Furthermore, the materials of the first frame, the second frame and the third frame are selected from one of PEKK, PEK, PAEK, PPA and PARA.

[0008] Further, it further includes a plurality of conductive mounting blocks installed on the third side frame. A conductive row is fixedly connected to the conductive mounting blocks, and a plurality of conductive grounding wires are fixedly connected to the conductive row. The conductive grounding wires are connected to the ground.

[0009] Further, a reinforcing back plate is installed at the bottom of the first side frame. The reinforcing back plate is made of aluminum alloy.

[0010] Further, a plurality of heat dissipation strips are fixedly connected to the reinforcing back plate.

[0011] Further, a first waterproof coating is applied to the upper part of the conductive plate, and a second waterproof coating is applied to the lower part of the conductive plate.

[0012] Compared with the prior art, the backlight source provided by the embodiment of the present invention has the following advantages: 1. The moisture-proof diaphragm can isolate the tide water, preventing the tide water from seeping into the backlight module. At the same time, the waterproof sealing glue can prevent the tide water from seeping into the backlight module from the edge gaps, so as to avoid damage to the backlight module, achieving the effect of moisture-proof for the backlight module.

[0013] 2. The conductive mounting blocks absorb the leaked current. The conductive mounting blocks converge the current onto the conductive row, and then the current is transmitted through the conductive row to the conductive grounding wires and introduced into the ground, so as to avoid electric shock and injury to people, achieving the effect of leakage protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0015] Figure 2 It is a three-dimensional sectional structural schematic diagram of the limiting plate, conductive plate and light source lamp of the present invention.

[0016] Figure 3 It is a three-dimensional exploded structural schematic diagram of the reflecting sheet, light guide plate and prism sheet of the present invention.

[0017] Figure 4 It is a three-dimensional sectional structural schematic diagram of the conductive mounting block, conductive row and conductive grounding wire of the present invention.

[0018] Figure 5 It is a three-dimensional sectional structural schematic diagram of the first side frame, reinforcing back plate and heat dissipation strips of the present invention.

[0019] Figure 6 It is a three-dimensional exploded structural schematic diagram of the conductive plate, first waterproof coating and second waterproof coating of the present invention.

[0020] Names and serial numbers of components in the figure: 1: First frame, 2: Second frame, 3: Reflective sheet, 4: Light guide plate, 5: Limiting plate, 6: Conductive plate, 7: Light source lamp, 8: Lower diffusion sheet, 9: Prismatic sheet, 10: Upper diffusion sheet, 11: Third frame, 12: Conductive mounting block, 13: Conductive row, 14: Conductive grounding wire, 15: Moisture-proof diaphragm, 16: Waterproof edge sealant, 17: Reinforcing backplane, 18: Heat dissipation strip, 19: First waterproof coating, 20: Second waterproof coating. Specific embodiments

[0021] The following specifically describes the present invention in conjunction with the accompanying drawings.

[0022] Embodiment 1: A backlight for marine displays, referring to Figures 1 - 4 As shown, it includes a backlight module, and the backlight module includes a first frame 1, a second frame 2, a reflective sheet 3, a light guide plate 4, a limiting plate 5, a conductive plate 6, a light source lamp 7, a lower diffusion sheet 8, a prismatic sheet 9, an upper diffusion sheet 10 and a third frame 11. The second frame 2 is installed on the first frame 1 by bonding, and a reflective sheet 3 is fixedly connected between the first frame 1 and the second frame 2 by bolting. The light guide plate 4 is installed on the second frame 2 by bolting. The lower diffusion sheet 8 is pasted on the light guide plate 4 by bonding. The prismatic sheet 9 is pasted on the lower diffusion sheet 8 by bonding. The upper diffusion sheet 10 is pasted on the prismatic sheet 9 by bonding. The third frame 11 is fixedly connected to the second frame 2 by bolting. The third frame 11 is located above the upper diffusion sheet 10. The materials of the first frame 1, the second frame 2 and the third frame 11 are selected from one of PEKK, PEK, PAEK, PPA and PARA, and their material properties have good heat resistance. A limiting plate 5 is installed on one side edge of the second frame 2 by bolting. A conductive plate 6 is installed on the second frame 2 by bolting. A plurality of light source lamps 7 are installed at the bottom of the conductive plate 6 by bolting. The light source lamps 7 are embedded in the limiting plate 5. It also includes a moisture-proof diaphragm 15 and a waterproof edge sealant 16. The moisture-proof diaphragm 15 is pasted on the upper diffusion sheet 10 and the third frame 11 by pasting. The waterproof edge sealant 16 is filled at the edge connection of the first frame 1 and the third frame 11, and the waterproof edge sealant 16 bonds the edge of the moisture-proof diaphragm 15.

[0023] When the backlight module needs to be used, by connecting the conductive plate 6 to the power supply module, the electric energy is transmitted to the light source lamp 7 through the conductive plate 6. The light source lamp 7 emits light and projects it onto the light guide plate 4 for imaging. The reflective sheet 3 can converge the light energy of the reflective sheet 3 onto the light guide plate 4 to make the imaging clearer. When the water vapor in the environment is heavy, the moisture-proof diaphragm 15 can isolate the moisture and prevent the moisture from seeping into the backlight module. At the same time, the waterproof edge sealant 16 can prevent the moisture from seeping into the backlight module from the edge gap to avoid damage to the backlight module.

[0024] Embodiment 2: On the basis of Embodiment 1, refer to Figure 4 As shown, it further includes four conductive mounting blocks 12 installed on the third frame 11 by means of bolt connection. A conductive bus bar 13 is fixedly connected to the conductive mounting block 12 by means of bonding. Three conductive ground wires 14 are fixedly connected to the conductive bus bar 13 by means of welding, and the conductive ground wires 14 are connected to the ground.

[0025] When there is a leakage phenomenon in the backlight module, the current is conducted to the conductive mounting block 12. The conductive mounting block 12 converges the current onto the conductive bus bar 13, and then the current is transmitted through the conductive bus bar 13 to the conductive ground wire 14 and introduced into the ground to prevent people from being injured due to electric leakage.

[0026] Refer to Figure 5 and Figure 6 As shown, a reinforcing back plate 17 is installed at the bottom of the first frame 1 by means of bolt connection. The reinforcing back plate 17 is made of aluminum alloy; a number of heat dissipation strips 18 for accelerating the heat dissipation efficiency are fixedly connected to the bottom of the reinforcing back plate 17 by means of welding; a first waterproof coating 19 is coated on the upper part of the conductive plate 6, and a second waterproof coating 20 is coated on the lower part of the conductive plate 6.

[0027] The strength of the first frame 1 is enhanced by the reinforcing back plate 17 to prevent the first frame 1 from being bent; the heat of the backlight module is conducted to the heat dissipation strips 18 through the reinforcing back plate 17, and the contact area with the air is increased through the heat dissipation strips 18, so that the heat on the heat dissipation strips 18 is quickly dissipated; the first waterproof coating 19 and the second waterproof coating 20 endow the conductive plate 6 with waterproof ability to prevent the conductive plate 6 from short-circuiting after getting wet.

[0028] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A backlight for marine display, comprising a backlight module. The backlight module includes a first frame (1), a second frame (2), a reflective sheet (3), a light guide plate (4), a limiting plate (5), a conductive plate (6), a light source lamp (7), a lower diffusion sheet (8), a prism sheet (9), an upper diffusion sheet (10) and a third frame (11). The second frame (2) is installed on the first frame (1), and the reflective sheet (3) is fixedly connected between the first frame (1) and the second frame (2). The light guide plate (4) is installed on the second frame (2), the lower diffusion sheet (8) is pasted on the light guide plate (4), the prism sheet (9) is pasted on the lower diffusion sheet (8), the upper diffusion sheet (10) is pasted on the prism sheet (9), the third frame (11) is fixedly connected to the second frame (2), and the third frame (11) is located above the upper diffusion sheet (10). A limiting plate (5) is installed on one side edge of the second frame (2), a conductive plate (6) is installed on the second frame (2), and a plurality of light source lamps (7) are installed on the conductive plate (6). The light source lamps (7) are embedded even in the limiting plate (5), and its characteristics are that, It further includes a moisture-proof diaphragm (15) and a waterproof edge-sealing adhesive (16). The moisture-proof diaphragm (15) is jointly laid on the upper diffusion sheet (10) and the third frame (11). The waterproof edge-sealing adhesive (16) is filled at the edge connection of the first frame (1) and the third frame (11), and the waterproof edge-sealing adhesive (16) bonds the edge of the moisture-proof diaphragm (15).

2. The backlight for marine display according to claim 1, wherein The materials of the first frame (1), the second frame (2) and the third frame (11) are selected from one of PEKK, PEK, PAEK, PPA and PARA.

3. A backlight for marine display according to claim 1, characterized in that, It further includes a plurality of conductive mounting blocks (12) mounted on the third frame (11). A conductive row (13) is fixedly connected to the conductive mounting block (12), and a plurality of conductive grounding wires (14) are fixedly connected to the conductive row (13), and the conductive grounding wires (14) are connected to the ground.

4. A backlight for marine display according to claim 1, characterized in that, A reinforcing backplane (17) is mounted at the bottom of the first frame (1), and the reinforcing backplane (17) is made of aluminum alloy.

5. A backlight for marine displays according to claim 4, characterized in that, A plurality of heat dissipation strips (18) are fixedly connected to the reinforcing backplane (17).

6. The backlight for marine display according to claim 1, wherein A first waterproof coating (19) is coated on the upper part of the conductive plate (6), and a second waterproof coating (20) is coated on the lower part of the conductive plate (6).

Images