PHUD silica gel buffer protection structure

Abstract

The utility model aims at providing a kind of PHUD silica gel buffer protection structure, it includes base and optical assembly, back light cavity is set up in base, optical assembly includes first lens, second lens, outer frame and several silica gel columns, first lens is set in the bottom of back light cavity, each silica gel column is respectively set in the position at four corners of back light cavity, and each silica gel column is all abutted on first lens, second lens is set on the top of each silica gel column, outer frame is buckled on base, to make outer frame press-clamp second lens. In this way, first lens and second lens are supported and fixed by silica gel column between them, using the soft property of silica gel column, so that first lens is reliably fixed in the bottom of base, second lens is reliably fixed in the top of base, when being installed on car and being used, whether it is the vibration of bumpy road or high-temperature use environment, the firmness of first lens and second lens can be effectively guaranteed, to avoid positional deviation.

Description

Technical Field

[0001] This utility model relates to the technical field of PHUD backlight modules, and in particular to a PHUD silicone buffer protection structure. Background Technology

[0002] PHUD (Panoramic Head-Up Display) is increasingly being equipped in new energy vehicles as new energy vehicle technology develops.

[0003] PHUD backlight modules typically consist of two lens structures, which are secured together by a snap-fit ​​mechanism within a plastic frame.

[0004] However, this plastic frame clip structure has the following shortcomings in practical use: When the vehicle is driven on bumpy roads, the clip structure of the plastic frame and the optical components will undergo micron-level displacement under vibration (actual measurement data shows that the X / Y axis offset can reach 50μm to 200μm). This displacement deviation can easily cause the optical path to shift, resulting in deviations in the emitted light angle (for example, a deviation angle greater than 0.5° will seriously affect the positioning accuracy of the virtual image); secondly, vehicles are used in high-temperature environments. Under typical vehicle operating conditions (temperature -40℃ to 105℃, mechanical vibration cycling between 20Hz and 2000Hz), the existing plastic frame clip structure is prone to stress relaxation under high-temperature environments, leading to a decrease in preload (the clamping force of the plastic clip decreases by 62% after 1000 temperature cycles); finally, when the clamping force decreases, the repeated collisions between the edge of the optical component and the bracket will generate submicron-level debris (SEM observation shows that the debris density is >200 particles / mm after 500 hours of road testing). 2 This poses a risk of contaminating the optical path or even causing a short circuit.

[0005] Therefore, in order to overcome the above-mentioned shortcomings of the prior art, the PHUD silicone buffer protection structure of this application is proposed. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a PHUD silicone buffer protection structure that can reliably fix optical components and prevent them from loosening due to vibration or high temperature.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A PHUD silicone cushioning and protective structure, comprising:

[0009] A base, wherein a backlight cavity is formed inside the base;

[0010] An optical assembly includes a first lens, a second lens, an outer frame, and a plurality of silicone pillars. The first lens is disposed at the bottom of the backlight cavity, and each of the silicone pillars is disposed at one of the four corners of the backlight cavity, with each silicone pillar abutting against the first lens. The second lens is disposed at the top of each of the silicone pillars, and the outer frame is fastened to the base so that the outer frame clamps the second lens.

[0011] Optionally, a first step is provided on the inner wall of the backlight cavity, and the first lens is disposed on the first step.

[0012] Optionally, the optical component further includes a lamp plate disposed on the inner bottom wall of the backlight cavity, and the lamp plate is located below the first lens.

[0013] Optionally, a mounting groove is provided at each of the four corners of the base, and each silicone pillar is disposed in the mounting groove in a corresponding manner.

[0014] Optionally, a second step is provided on the inner wall of the backlight cavity, the second step being located above the first step, and the second lens being located above the second step.

[0015] Optionally, a diffusion film is also provided between the second lens and the outer frame.

[0016] Optionally, an insert groove is formed at each end of the silicone pillar, and the first lens and the second lens are respectively located in the two insert grooves.

[0017] Optionally, the silica gel pillar contains a plurality of nitride nanosheets.

[0018] Optionally, the outer frame has a plurality of buckle holes, and the base has a plurality of buckle blocks arranged around the backlight cavity, with each buckle block corresponding to and engaging with each buckle hole.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] This utility model discloses a PHUD silicone buffer protection structure, including a base and optical components. The base has a backlight cavity. The optical components include a first lens, a second lens, an outer frame, and several silicone pillars. The first lens is located at the bottom of the backlight cavity, and the silicone pillars are located at the four corners of the backlight cavity, each abutting against the first lens. The second lens is located on the top of each silicone pillar. The outer frame is fastened to the base to clamp the second lens. Thus, the first and second lenses are supported and fixed by the silicone pillars located between them. Utilizing the soft properties of the silicone pillars, the first lens is reliably fixed to the bottom of the base, and the second lens is reliably fixed to the top of the base. When this PHUD silicone buffer protection structure is applied to an automobile, regardless of vibrations from bumpy roads or high-temperature environments, the inherent properties of silicone effectively ensure the stability of the first and second lenses, preventing positional deviations relative to the base, thereby effectively guaranteeing the display quality of the PHUD. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the PHUD silicone buffer protection structure according to one embodiment of the present invention;

[0023] Figure 2 for Figure 1 The diagram shown is an exploded view of the PHUD silicone cushioning protection structure.

[0024] Figure 3 for Figure 1 A cross-sectional schematic diagram of the PHUD silicone cushioning and protective structure is shown.

[0025] Figure 4 This is a schematic diagram of the base according to one embodiment of the present invention;

[0026] Figure 5 for Figure 1 The diagram shows a partial structural schematic of the PHUD silicone cushioning protection structure.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. PHUD silicone buffer protection structure; 100. Base; 200. Optical component; 110. Backlight cavity; 210. First lens; 220. Second lens; 230. Outer frame; 240. Silicone pillar; 120. First step; 250. Lamp panel; 130. Embedding groove; 140. Second step; 260. Diffuser film; 241. Insert groove; 231. Buckle hole; 150. Buckle block. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0030] like Figures 1 to 3 As shown, a PHUD silicone buffer protection structure 10 includes a base 100 and an optical component 200. A backlight cavity 110 is formed in the base 100. The optical component 200 includes a first lens 210, a second lens 220, an outer frame 230, and a plurality of silicone pillars 240. The first lens 210 is disposed at the bottom of the backlight cavity 110. Each silicone pillar 240 is disposed at one of the four corners of the backlight cavity 110, and each silicone pillar 240 abuts against the first lens 210. The second lens 220 is disposed on the top of each silicone pillar 240. The outer frame 230 is fastened to the base 100 so that the outer frame 230 clamps the second lens 220.

[0031] It should be noted that the backlight cavity 110 has a rectangular shape. The first lens 210 is mounted on the inner bottom wall of the backlight cavity 110. Each silicone pillar 240 is mounted vertically at one of the four corners of the backlight cavity 110, with each silicone pillar 240 abutting against the four corners of the first lens 210. Furthermore, the second lens 220 is mounted at the opening of the backlight cavity 110, with each second lens 220 abutting against the top of each silicone pillar 240, creating a gap between the second lens 220 and the first lens 210. The outer frame 230 is fastened to the top of the base 100 and is used to clamp the second lens 220. Thus, the first lens 210 and the second lens 220 are supported and fixed by the silicone pillar 240 located between them. Utilizing the soft properties of the silicone pillar 240, the first lens 210 is reliably fixed to the bottom of the base 100, and the second lens 220 is reliably fixed to the top of the base 100. When the PHUD silicone buffer protection structure 10 of this application is applied to a car, whether it is the vibration caused by bumpy road surface or the high temperature environment, the inherent properties of silicone material can effectively ensure the firmness of the first lens 210 and the second lens 220, avoid positional deviation relative to the base 100, and thus effectively ensure the display quality of the PHUD.

[0032] like Figure 3 and Figure 4As shown, in one embodiment, a first step 120 is provided on the inner sidewall of the backlight cavity 110, and a first lens 210 is disposed on the first step 120.

[0033] It should be noted that the first step 120 is located at the junction of the inner side wall and the inner bottom wall of the backlight cavity 110. The first step 120 is distributed around the backlight cavity 110, so that the first step 120 can support the periphery of the first lens 210.

[0034] like Figure 2 and Figure 3 As shown, in one embodiment, the optical component 200 further includes a lamp plate 250, which is disposed on the inner bottom wall of the backlight cavity 110 and is located below the first lens 210.

[0035] It should be noted that the first step 120 provided on the inner wall of the backlight cavity 110 creates a certain gap between the first lens 210 and the inner bottom wall of the backlight cavity 110. The lamp board 250 is an LED lamp board, which is mounted on the inner bottom wall of the backlight cavity 110 and located below the first lens 210, so that the light emitted by the lamp board 250 can pass through the first lens 210. In one embodiment, the lamp board 250 is bonded and fixed to the inner bottom wall of the backlight cavity 110.

[0036] like Figure 2 , Figure 4 and Figure 5 As shown, in one embodiment, a mounting groove 130 is provided at each of the four corners of the base 100, and each silicone pillar 240 is disposed in the mounting groove 130 in a corresponding manner.

[0037] It should be noted that in order to reliably fix the silicone pillars 240 at the four corners of the base 100, an inserting groove 130 is provided at each of the four corners of the base 100, so that each silicone pillar 240 can be properly inserted into the inserting groove 130.

[0038] like Figure 2 , Figure 4 and Figure 5 As shown, in one embodiment, a second step 140 is also provided on the inner sidewall of the backlight cavity 110. The second step 140 is located above the first step 120, and the second lens 220 is located above the second step 140.

[0039] It should be noted that the second step 140 is located at the opening of the backlight cavity 110, and there is a gap between the second step 140 and the first step 120. The four corners of the second lens 220 are supported and abutted by the silicone pillars 240, thus there is a gap between the second lens 220 and the second step 140. In this way, when the outer frame 230 is snapped and fixed to the base 100, the outer frame 230 clamps the second lens 220 to press the silicone pillars 240, and finally the outer frame 230 abuts against the second step 140, and the second lens 220 and the first lens 210 are held abutted by the silicone pillars 240, thereby being reliably fixed.

[0040] like Figure 2 and Figure 3 As shown, in one embodiment, a diffusion film 260 is further provided between the second lens 220 and the outer frame 230.

[0041] It should be noted that the diffusion film 260 is located on the surface of the second lens 220, and the diffusion film 260 is also clamped and fixed by the outer frame 230. Thus, under the action of the diffusion film 260, the light projected by the second lens 220 is more uniform.

[0042] like Figure 3 and Figure 5 As shown, in one embodiment, a insert groove 241 is provided at each end of the silicone pillar 240, and the first lens 210 and the second lens 220 are respectively located in the two insert grooves 241.

[0043] It should be noted that, in order for the silicone pillar 240 to stably clamp the first lens 210 and the second lens 220, an insert groove 241 is formed at each end of the silicone pillar 240. In one embodiment, the insert groove 241 has a right-angle structure, so that the insert groove 241 can fit the right-angle structure of the first lens 210 / second lens 220, effectively improving the clamping stability of the first lens 210 and the second lens 220.

[0044] In one embodiment, a plurality of nitride nanosheets are disposed within the silicone pillar 240. Specifically, nitride nanosheets are incorporated into liquid silicone, and the resulting silicone pillar 240 contains a large number of nitride nanosheets after solidification, thereby effectively improving the thermal conductivity and high-temperature resistance of the silicone pillar 240. Therefore, when installed in a car and subjected to high-temperature operating environments, it can effectively improve the heat dissipation efficiency of the LED.

[0045] like Figure 1 , Figure 2 As shown, in one embodiment, the outer frame 230 is provided with a plurality of buckle holes 231, and the base 100 is provided with a plurality of buckle blocks 150 surrounding the backlight cavity 110, each buckle block 150 corresponding to and engaging with each buckle hole 231.

[0046] In this way, by using each buckle 150 to snap onto each buckle hole 231, the outer frame 230 can be snapped onto the top of the base 100, and finally the outer frame 230 clamps and fixes the second lens 220, silicone pillar 240 and first lens 210 inside the base 100.

[0047] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood as including, but not limited to, locking and fixing with screws / bolts, welding, or bonding with adhesives, wherein the adhesives used can be commercially available finished products. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A PHUD silicone cushioning and protective structure, characterized in that, include: A base, wherein a backlight cavity is formed inside the base; An optical assembly includes a first lens, a second lens, an outer frame, and a plurality of silicone pillars. The first lens is disposed at the bottom of the backlight cavity, and each of the silicone pillars is disposed at one of the four corners of the backlight cavity, with each silicone pillar abutting against the first lens. The second lens is disposed at the top of each of the silicone pillars, and the outer frame is fastened to the base so that the outer frame clamps the second lens.

2. The PHUD silicone cushioning and protective structure according to claim 1, characterized in that, A first step is provided on the inner wall of the backlight cavity, and the first lens is disposed on the first step.

3. The PHUD silicone cushioning and protective structure according to claim 2, characterized in that, The optical component also includes a lamp plate, which is disposed on the inner bottom wall of the backlight cavity and is located below the first lens.

4. The PHUD silicone cushioning and protective structure according to claim 2, characterized in that, The base has a recessed groove at each of its four corners, and each silicone pillar is placed in a corresponding recessed groove.

5. The PHUD silicone cushioning and protective structure according to claim 2, characterized in that, A second step is also provided on the inner wall of the backlight cavity, the second step being located above the first step, and the second lens being located above the second step.

6. The PHUD silicone cushioning and protective structure according to claim 1, characterized in that, A diffusion film is also provided between the second lens and the outer frame.

7. The PHUD silicone cushioning and protective structure according to claim 1, characterized in that, An insert groove is formed at each end of the silicone pillar, and the first lens and the second lens are respectively located in the two insert grooves.

8. The PHUD silicone cushioning and protective structure according to claim 1, characterized in that, The silicone column contains several nitride nanosheets.

9. The PHUD silicone cushioning and protective structure according to claim 1, characterized in that, The outer frame has several buckle holes, and the base has several buckle blocks arranged around the backlight cavity, with each buckle block corresponding to and engaging with each buckle hole.

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