Polarized hot mirror PGU module

Abstract

The utility model discloses a hot mirror PGU module with polarization, which comprises an optical cavity, arc-shaped blocks are fixedly connected to the top end and the right side of one side of the optical cavity, supporting blocks are fixedly connected to the inner bottom wall and the inner wall of the left side of the optical cavity, an LCD screen is installed inside one side of the optical cavity, and four edges of the LCD screen are respectively in contact with the arc-shaped blocks and the supporting blocks. A polarization heat mirror is arranged on one side of the LCD screen, the four edges of the polarization heat mirror make contact with the arc-shaped blocks and the supporting blocks respectively, and one side of the light cavity is sleeved with a screen cover for limiting and fixing the LCD screen and the polarization heat mirror. According to the utility model, the polarizing heat mirror is additionally arranged on the LCD screen, and the polarizing film of the polarizing heat mirror absorbs P light and blocks S light (energy) to play a role in heat insulation, so that the hidden danger of screen burning caused by backward flowing of sunlight is greatly reduced or avoided, and the normal work of the LCD screen is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of HUD, in particular to a polarized hot mirror PGU module. Background Art

[0002] PGU (picture generation unit) is one of the core components of HUD (head-up display). It is responsible for generating graphics and controlling brightness, while the PGU lens is part of the PGU and is responsible for generating and projecting these images. Specifically, the PGU lens will magnify the image generated by the image generation unit through a free-form mirror and eliminate the distortion caused by the windshield, and then the windshield will magnify it again and eliminate ghosting, and finally reflect the image to the driver's eyes. However, in the prior art, the TFT HUD has the problem of sunlight backflow. Since the optical path is reversible, the sunlight is concentrated directly to the screen through two concave mirrors, causing screen burn-in. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a polarized hot mirror PGU module, which has the advantages of reducing or avoiding the hidden danger of screen burn-in due to sunlight backflow and ensuring the normal operation of the LCD screen.

[0004] The technical solution is a polarized heat mirror PGU module, comprising an optical cavity, wherein the top and right side of one side of the optical cavity are fixedly connected with arc blocks, the inner bottom wall and the left inner wall of the optical cavity are fixedly connected with support blocks, an LCD screen is installed inside one side of the optical cavity, and the four sides of the LCD screen are respectively in contact with the arc block and the support block, a polarized heat mirror is arranged on one side of the LCD screen, and the four sides of the polarized heat mirror are respectively in contact with the arc block and the support block, and a screen cover is sleeved on one side of the optical cavity for limiting and fixing the LCD screen and the polarized heat mirror.

[0005] Preferably, the screen cover is fixed on the optical cavity by a limiting mechanism.

[0006] Preferably, the limiting mechanism includes first slots opened at the top and bottom of the screen cover and first elastic buckles fixedly connected to the top and bottom of the optical cavity.

[0007] Preferably, an LED light board is mounted on the other side of the light cavity by means of screws, and a heat sink is fixedly mounted on the side of the LED light board away from the light cavity.

[0008] Preferably, a lens 1 is installed inside the other side of the optical cavity, and a lens 1 is installed in the middle of the inner cavity of the optical cavity.

[0009] Preferably, an optical cavity cover is installed on the top of the optical cavity, second card slots are opened on both left and right sides of the optical cavity cover, and second elastic buckles are fixedly connected to both left and right sides of the optical cavity.

[0010] Preferably, when the second elastic buckle is inserted into the second card slot, the optical cavity cover is fixed to the optical cavity.

[0011] Preferably, air-avoiding grooves are provided at the top of the optical cavity and the middle of the screen cover.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the polarized heat mirror PGU module of the utility model is in use, a polarized heat mirror is added to the LCD screen. The polarizer of the polarized heat mirror absorbs P light and blocks S light (energy), which can play a heat insulation role, thereby greatly reducing or avoiding the hidden danger of screen burn-in due to sunlight backflow, and ensuring the normal operation of the LCD screen. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is an explosion schematic diagram of the utility model.

[0016] Figure 3 It is a schematic diagram of the screen cover structure of the utility model.

[0017] Figure 4 It is a schematic diagram of the structure of the polarization heat mirror of the utility model.

[0018] Figure 5 It is a schematic diagram of the optical cavity structure of the utility model.

[0019] Explanation of the symbols in the schematic diagram:

[0020] 1. Radiator; 2. LED light board; 3. Lens 1; 4. Optical cavity; 5. Lens 2; 6. Optical cavity cover; 7. LCD screen; 8. Polarized heat mirror; 9. Screen cover; 41. Arc block; 42. Support block; 43. First elastic buckle; 44. Second elastic buckle; 61. Second slot; 91. First slot. 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] Depend on Figures 1 to 5A polarized heat mirror PGU module is provided, comprising an optical cavity 4, wherein the top and right side of one side of the optical cavity 4 are fixedly connected with an arc block 41, the inner bottom wall and the left inner wall of the optical cavity 4 are fixedly connected with a support block 42, an LCD screen 7 is installed inside one side of the optical cavity 4, and the four sides of the LCD screen 7 are respectively in contact with the arc block 41 and the support block 42, a polarized heat mirror 8 is arranged on one side of the LCD screen 7, and the four sides of the polarized heat mirror 8 are respectively in contact with the arc block 41 and the support block 42, a screen cover 9 for limiting and fixing the LCD screen 7 and the polarized heat mirror 8 is sleeved on one side of the optical cavity 4, and air avoidance grooves are provided on the top of the optical cavity 4 and the middle of the screen cover 9, a polarized heat mirror 8 is added to the LCD screen 7, and the polarizer of the polarized heat mirror 8 absorbs P light and blocks S light (energy), which can play a role of heat insulation, thereby greatly reducing or avoiding the hidden danger of screen burning due to backflow of sunlight, and ensuring the normal operation of the LCD screen 7, when installing the LCD screen 7, firstly install L The raised portion of the CD screen 7 is aligned with the air avoidance groove opened in the optical cavity 4, and then the LCD screen 7 is inserted into one side of the optical cavity 4, and the top of the LCD screen 7 and the right side wall of the LCD screen 7 are in contact with the end of the arc block 41 on the optical cavity 4, and the left side of the LCD screen 7 and the bottom of the LCD screen 7 are in contact with the support blocks 42 on the left inner wall of the optical cavity 4 and the inner bottom wall of the optical cavity 4, respectively. At this time, the four sides of the LCD screen 7 are supported inside the optical cavity 4 with the cooperation of the arc block 41 and the support block 42, and then the polarized heat mirror 8 is inserted into the interior of the optical cavity 4 and contacts with the LCD screen 7, and the top of the polarized heat mirror 8 and the right side wall of the polarized heat mirror 8 are in contact with the end of the arc block 41 on the optical cavity 4, and the left side of the polarized heat mirror 8 and the bottom of the polarized heat mirror 8 are in contact with the support blocks 42 on the left inner wall of the optical cavity 4 and the inner bottom wall of the optical cavity 4, respectively. At this time, the four sides of the polarized heat mirror 8 are supported inside the optical cavity 4 with the cooperation of the arc block 41 and the support block 42.

[0023] The screen cover 9 is fixed on the optical cavity 4 by a limiting mechanism, and the limiting mechanism includes a first card slot 91 opened at the top and bottom of the screen cover 9 and a first elastic buckle 43 fixedly connected to the top and bottom of the optical cavity 4;

[0024] Align the screen cover 9 with the optical cavity 4 and insert the screen cover 9 into the optical cavity 4. The first elastic buckles 43 at the top and bottom of the optical cavity 4 are inclined surfaces away from the radiator 1. During the insertion process of the screen cover 9, the screen cover 9 first contacts the inclined surface of the first elastic buckle 43. During the continuous insertion process, the screen cover 9 will squeeze the first elastic buckle 43. When the screen cover 9 is inserted into the optical cavity 4, the first slot 91 provided on the screen cover 9 corresponds to the position of the first elastic buckle 43. At this time, the screen cover 9 no longer squeezes the first elastic buckle 43, and the first elastic buckle 43 returns to its original shape. At this time, the screen cover 9 can be fixedly installed on the optical cavity 4 under the cooperation of the first elastic buckle 43 and the first slot 91, and the inner wall of the screen cover 9 contacts the polarized heat mirror 8. At this time, the position of the polarized heat mirror 8 is fixed under the action of the screen cover 9. At the same time, since the top of the screen cover 9 is provided with an air avoidance groove, it can be ensured that the raised part on the LCD screen 7 will not affect it during the insertion of the screen cover 9 into the optical cavity 4.

[0025] In addition, an LED light board 2 is installed on the other side of the optical cavity 4 by screws, a heat sink 1 is fixedly installed on the side of the LED light board 2 away from the optical cavity 4, a lens 1 3 is installed inside the other side of the optical cavity 4, and a lens 2 5 is installed in the middle of the inner cavity of the optical cavity 4;

[0026] In addition, a light cavity cover 6 is installed on the top of the light cavity 4, and second card slots 61 are opened on the left and right sides of the light cavity cover 6. Second elastic buckles 44 are fixedly connected to the left and right sides of the light cavity 4. When the second elastic buckles 44 are inserted into the second card slots 61, the light cavity cover 6 is fixed to the light cavity 4.

[0027] When installing the optical cavity cover 6, the optical cavity cover 6 is stuck on the optical cavity 4 from top to bottom. During the process of the optical cavity cover 6 being stuck into the optical cavity 4, the optical cavity cover 6 will first squeeze the inclined surface of the second elastic buckle 44 until the optical cavity cover 6 is stuck into the optical cavity 4 and the second slot 61 opened on the optical cavity cover 6 corresponds to the position of the second elastic buckle 44. At this time, the optical cavity cover 6 no longer squeezes the second elastic buckle 44, and the second elastic buckle 44 returns to its original shape. With the cooperation of the second elastic buckle 44 and the second slot 61, the optical cavity cover 6 can be fixed.

[0028] When the polarized heat mirror PGU module of the utility model is in use, a polarized heat mirror 8 is added to the LCD screen 7. The polarizer of the polarized heat mirror 8 absorbs P light and blocks S light (energy), which can play a heat insulation role, thereby greatly reducing or avoiding the risk of screen burn-in due to sunlight backflow, and ensuring the normal operation of the LCD screen 7.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polarized hot mirror PGU module, characterized in that: The optical cavity (4) comprises an optical cavity (4), wherein the top and right side of one side of the optical cavity (4) are fixedly connected to an arc block (41), the inner bottom wall and the left inner wall of the optical cavity (4) are fixedly connected to a support block (42), an LCD screen (7) is installed inside one side of the optical cavity (4), and the four sides of the LCD screen (7) are respectively in contact with the arc block (41) and the support block (42), a polarizing heat mirror (8) is arranged on one side of the LCD screen (7), and the four sides of the polarizing heat mirror (8) are respectively in contact with the arc block (41) and the support block (42), and a screen cover (9) for limiting and fixing the LCD screen (7) and the polarizing heat mirror (8) is sleeved on one side of the optical cavity (4).

2. The polarized hot mirror PGU module according to claim 1, characterized in that: The screen cover (9) is fixed on the optical cavity (4) via a limiting mechanism.

3. The polarized hot mirror PGU module according to claim 2, characterized in that: The limiting mechanism comprises a first clamping groove (91) opened at the top and bottom of the screen cover (9) and a first elastic clamping buckle (43) fixedly connected to the top and bottom of the optical cavity (4).

4. The polarized hot mirror PGU module according to claim 1, characterized in that: An LED light board (2) is mounted on the other side of the optical cavity (4) by means of screws, and a heat sink (1) is fixedly mounted on the side of the LED light board (2) away from the optical cavity (4).

5. The polarized hot mirror PGU module according to claim 1, characterized in that: A lens one (3) is installed inside the other side of the optical cavity (4), and a lens two (5) is installed in the middle of the inner cavity of the optical cavity (4).

6. The polarized hot mirror PGU module according to claim 1, characterized in that: A light cavity cover (6) is installed on the top of the light cavity (4), second card slots (61) are provided on both left and right sides of the light cavity cover (6), and second elastic buckles (44) are fixedly connected to both left and right sides of the light cavity (4).

7. The polarized hot mirror PGU module according to claim 6, characterized in that: When the second elastic buckle (44) is inserted into the interior of the second clamping groove (61), the optical cavity cover (6) is fixed to the optical cavity (4).

8. The polarized hot mirror PGU module according to claim 1, characterized in that: The top of the optical cavity (4) and the middle of the screen cover (9) are both provided with air-avoiding grooves.

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