CN212112059U

CN212112059U - HUD is with porous TIR prism in a poor light

Info

Publication number: CN212112059U
Application number: CN202020855598.3U
Authority: CN
Inventors: 汤赵斌; 何官儒; 梁彩虹
Original assignee: Hardston Mobile Media Asia Pacific Co ltd
Current assignee: Hardston Mobile Media Asia Pacific Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-08
Anticipated expiration: 2030-05-20

Abstract

The utility model belongs to the technical field of prism in a poor light, especially, be a porous TIR prism in a poor light for HUD, which comprises a lampshade, the lamp shade is the rectangle framework, the bottom fixed mounting of lamp shade has the circuit board, the positive distribution welding of circuit board has a plurality of lamp pearls, and is a plurality of the lamp pearl passes through the built-in circuit of circuit board connects in parallel or establishes ties, the front support of circuit board is fixed with the prism module, the prism module is located one side distribution of circuit board is fixed with a plurality of TIR pits, and is a plurality of the TIR pit is with a plurality of the lamp pearl corresponds one by one, the opposite side of prism module is. The utility model discloses a design of original porous TIR prism, suitable and brightness enhancement film and the diffusion barrier of collocation are provided with TIR pit light-directing structure on the TIR lens, have effectively promoted luminance and the homogeneity that is shaded for luminance and homogeneity obtain very big promotion, can both see the content of throwing clearly under any condition.

Description

HUD is with porous TIR prism in a poor light

Technical Field

The utility model relates to a prism technical field in a poor light specifically is a porous TIR prism in a poor light for HUD.

Background

The HUD is called a parallel display system for short for head-up display, and refers to a multifunctional instrument panel which is operated blindly and centered on a driver, and has the function of projecting important driving information such as speed per hour, navigation and the like onto a windshield glass in front of the driver, so that the driver can see the important driving information such as speed per hour, navigation and the like without lowering head or turning head as much as possible; the existing W-HUD in the market is not in large quantity, the backlight brightness is improved in multiple modes, the problems of low efficiency and low brightness generally exist, the display brightness is a key index of the HUD, and the difficulty lies in the brightness of an LCD screen; the screen is brighter than the ambient brightness of the outside in the sun, the displayed image can be seen, but the light reflected by the windshield accounts for a few percent of the total intensity, the utilization rate is very low, and in order to improve the brightness of the LCD display screen, the backlight device of various HUDs is on the market, starting from improving the brightness of the LCD backlight basically.

The current backlight device for HUD has the following problems:

1. when present HUD is with backlight unit when external sunshine is sufficient, its picture signal that throws windshield is dim, and the driver of being inconvenient in observes.

2. When the current backlight device for HUD shakes, the display screen cannot shake synchronously with the automobile, so that the image on the windshield of the projection device shakes and blurs.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a HUD is with porous TIR prism in a poor light has solved present HUD and has used backlight device when external sunshine is sufficient, and it throws to windshield's picture signal dim to and the problem that the display screen can not rock in step with it when the car rocks.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a multi-hole TIR backlight prism for HUD comprises a lamp shade, wherein the lamp shade is a rectangular frame body, a circuit board is fixedly arranged at the bottom end of the lamp shade, a plurality of lamp beads are welded on the front surface of the circuit board in a distributed manner, the lamp beads are connected in parallel or in series through a built-in circuit of the circuit board, a prism module is fixedly supported on the front surface of the circuit board, the prism module is positioned on one side of the circuit board and is fixedly provided with a plurality of TIR pits, the TIR pits correspond to the lamp beads one by one, a plurality of TIR convex lenses are arranged on the other side of the prism module and are concentrically arranged with the TIR pits corresponding to the TIR convex lenses, a first clamping groove and a second clamping groove are sequentially arranged from the bottom end to the opening of the inner cavity of the lamp shade, a brightness enhancement film is fixedly arranged on the lamp shade through the first clamping groove in a, the fixed gomphosis of opening of lamp shade has the display screen, the top lock joint of lamp shade has the screen frame, the screen frame crimping the avris of display screen.

As a preferred technical scheme of the utility model, the avris of screen frame is equipped with the connection ear platform, the connection ear platform runs through there is the screw, the avris fixedly connected with screw hole of lamp shade, the screw that runs through on the connection ear platform closes the connection soon the screw hole.

As a preferred technical scheme of the utility model, the avris intercommunication of display screen has the signal winding displacement, the display screen passes through signal winding displacement electric connection video driver.

As an optimal technical scheme of the utility model, the back mounted of circuit board has the fin, fixed mounting has drive circuit on the fin, drive circuit passes through the built-in circuit electric connection of circuit board is a plurality of the lamp pearl.

As an optimized technical scheme of the utility model, the opening gomphosis of lamp shade is connected with joint strip.

As an optimized technical scheme of the utility model, the fixed screw thread mount pad that is equipped with of lateral wall of lamp shade.

(III) advantageous effects

Compared with the prior art, the utility model provides a HUD is with porous TIR prism in a poor light possesses following beneficial effect:

1. this HUD is with porous TIR prism in a poor light adopts the design of original porous TIR prism, and suitable and brightness enhancement film and diffusion barrier of collocation are provided with TIR pit light-directing structure on the TIR lens, have effectively promoted luminance and the homogeneity that is shaded for luminance and homogeneity obtain very big promotion, can both see the content of throwing clearly under any condition.

2. This HUD is with porous TIR prism in a poor light, the opening gomphosis of lamp shade is connected with joint strip and seals up the inner chamber of lamp shade, carries out elastic support to the avris of display screen simultaneously, eliminates the gap between its and the lamp shade, and the display screen can not extra rocking when the car is gone and is rocked, and its display image can throw the settlement position to the car windshield all the time, strengthens its display effect.

Drawings

FIG. 1 is an exploded view of the subjective structure of the present invention;

fig. 2 is the side-cut structure schematic diagram of the utility model.

In the figure: 1. a lamp shade; 2. a circuit board; 3. a lamp bead; 4. a prism module; 5. a TIR pit; 6. a TIR convex lens; 7. a first clamping groove; 8. a second clamping groove; 9. a brightness enhancement film; 10. a diffusion membrane; 11. a display screen; 12. a screen frame; 13. connecting the lug bosses; 14. a threaded hole; 15. signal flat cable; 16. a heat sink; 17. a drive circuit; 18. sealing rubber strips; 19. and (4) a threaded mounting seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-2, the present invention provides the following technical solutions: a multi-hole TIR backlight prism for a HUD comprises a lamp shade 1, wherein the lamp shade 1 is a rectangular frame body, a circuit board 2 is fixedly arranged at the bottom end of the lamp shade 1, a plurality of lamp beads 3 are distributed and welded on the front surface of the circuit board 2, the lamp beads 3 are connected in parallel or in series through a built-in circuit of the circuit board 2, a prism module 4 is fixedly supported on the front surface of the circuit board 2, a plurality of TIR pits 5 are distributed and fixed on one side of the circuit board 2 of the prism module 4, the TIR pits 5 correspond to the lamp beads 3 one by one, a plurality of TIR convex lenses 6 are arranged on the other side of the prism module 4, the TIR convex lenses 6 at the top ends and the corresponding TIR pits 5 are concentrically arranged, a first clamping groove 7 and a second clamping groove 8 are sequentially arranged from the bottom end to an opening of an inner cavity of the lamp shade 1, a brightness enhancement film 9 is, the display screen 11 is fixedly embedded in an opening of the lampshade 1, the top end of the lampshade 1 is buckled with the screen frame 12, and the screen frame 12 is in pressure joint with the side of the display screen 11.

In this embodiment, 11 signal connection vehicle-mounted computer or mobile communication terminal of display screen, convert the information of the two into video or the picture and specifically show, lamp pearl 3 sends the light of required luminance and colour after connecting in parallel or establishing ties through circuit board 2's built-in circuit, light passes through TIR pit 5 and gets into prism module 4, then wear out through TIR convex lens 6, the light of state of dispersing this moment is assembled by TIR pit 5 and TIR convex lens 6, then pass brightness enhancement film 9 increment in proper order and pass diffusion barrier 10 with light diffusion, through the integration, after the light of blast throws display screen 11, throw road conditions information on the display screen 11 to car windshield, thereby be convenient for the driver to observe.

Specifically, a connecting lug boss 13 is arranged on the side of the screen frame 12, a screw penetrates through the connecting lug boss 13, a threaded hole 14 is fixedly connected to the side of the lampshade 1, and the screw penetrating through the connecting lug boss 13 is screwed with the threaded hole 14.

In this embodiment, the bezel 12 is fastened to the opening of the lamp cover 1, and the bezel 12 is screwed to the lamp cover 1 by screwing the screw hole 14 through the connection lug 13.

Specifically, the side of the display screen 11 is connected to a signal bus 15, and the display screen 11 is electrically connected to the video driver through the signal bus 15.

In this embodiment, the display screen 11 adopts an ILI9341SPI serial liquid crystal display, and can display the road condition information played by the video driver.

Specifically, the back surface of the circuit board 2 is provided with a radiating fin 16, a driving circuit 17 is fixedly mounted on the radiating fin 16, and the driving circuit 17 is electrically connected with the lamp beads 3 through a built-in circuit of the circuit board 2.

In this embodiment, drive circuit 17 adopts YW-20 type LED drive power supply, can drive the lamp pearl 3 of installing in circuit board 2 and light or close to and control its luminous luminance to the fine content that shows on the projection display screen 11, the heat that produces when fin 16 is used for lighting lamp pearl 3 distributes away, the order the utility model discloses lasting stable work.

Specifically, the opening of the lamp cover 1 is fitted and connected with a sealing rubber strip 18.

In this embodiment, the opening gomphosis of lamp shade 1 is connected with joint strip 18, and joint strip 18 seals the inner chamber of lamp shade 1 on the one hand, and the second also carries out elastic support to the avris of display screen 11, eliminates the gap between its and the lamp shade 1, and display screen 11 can not extra rocking when the car is gone and is rocked, strengthens its display effect.

Specifically, a threaded mounting seat 19 is fixedly arranged on the side wall of the lampshade 1.

In this embodiment, the fixed screw thread mount pad 19 that is equipped with of lateral wall of lamp shade 1, screw thread mount pad 19 are used for the spiral shell to connect installation buckle or installation sucking disc, thereby will the utility model discloses main part fixed mounting is in the carriage.

The driving circuit 17 in the present embodiment is a known technology that has been disclosed to be widely used in industrial production and daily life.

The utility model discloses a theory of operation and use flow: display screen 11 signal connection vehicle computer or mobile communication terminal, convert the information of the two into video or the picture specifically shows, the light that sends required luminance and colour after the built-in circuit of lamp pearl 3 through circuit board 2 connects in parallel or establishes ties, light passes through TIR pit 5 and gets into prism module 4, then wear out through TIR convex lens 6, the light of state of dispersing this moment is assembled by TIR pit 5 and TIR convex lens 6, then pass brightness enhancement film 9 increment in proper order and pass diffusion barrier 10 with the light diffusion, through the integration, the light of blast throws behind display screen 11, throw road conditions information on the display screen 11 to car windshield, thereby be convenient for the driver to observe.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A porous TIR prism in a poor light for HUD, includes lamp shade (1), its characterized in that: the lamp shade (1) is a rectangular frame body, a circuit board (2) is fixedly mounted at the bottom end of the lamp shade (1), a plurality of lamp beads (3) are welded on the front surface of the circuit board (2) in a distributed mode, the lamp beads (3) are connected in parallel or in series through built-in circuits of the circuit board (2), a prism module (4) is fixed on the front surface of the circuit board (2) in a supporting mode, the prism module (4) is located on one side of the circuit board (2) and is fixedly provided with a plurality of TIR pits (5), the TIR pits (5) correspond to the lamp beads (3) one by one, a plurality of TIR convex lenses (6) are arranged on the other side of the prism module (4) in a concentric mode, the TIR pits (5) on the top ends of the TIR convex lenses (6) are all concentrically arranged, a first clamping groove (7) and a second clamping groove (8) are sequentially arranged, lampshade (1) passes through first joint groove (7) joint is fixed with brightness enhancement film (9), lampshade (1) passes through second joint groove (8) joint is fixed with diffusion barrier (10), the fixed gomphosis of opening of lampshade (1) has display screen (11), the top lock joint of lampshade (1) has screen frame (12), screen frame (12) crimping the avris of display screen (11).

2. A porous TIR backlit prism for HUDs according to claim 1, wherein: the avris of screen frame (12) is equipped with connection ear platform (13), it has the screw to connect ear platform (13) to run through, the avris fixedly connected with screw hole (14) of lamp shade (1), the screw spiral shell that runs through connects on connection ear platform (13) screw hole (14).

3. A porous TIR backlit prism for HUDs according to claim 1, wherein: the avris of display screen (11) intercommunication has signal winding displacement (15), display screen (11) pass through signal winding displacement (15) electric connection video driver.

4. A porous TIR backlit prism for HUDs according to claim 1, wherein: the back surface of the circuit board (2) is provided with a radiating fin (16), the radiating fin (16) is fixedly provided with a driving circuit (17), and the driving circuit (17) is electrically connected with the lamp beads (3) through a built-in circuit of the circuit board (2).

5. A porous TIR backlit prism for HUDs according to claim 1, wherein: the opening of the lampshade (1) is embedded and connected with a sealing rubber strip (18).

6. A porous TIR backlit prism for HUDs according to claim 1, wherein: the side wall of the lampshade (1) is fixedly provided with a thread mounting seat (19).