LCD Optical Module

Abstract

The invention discloses an LCD optical module, including a front cover, a back cover, a sealing glass, an LCD screen and a sealing gasket, wherein the front cover matches the back cover, the sealing glass is two pieces, the two pieces of sealing glass are fixed on the front cover and the back cover respectively, the LCD screen is arranged between the front cover and the back cover, a cooling cavity is formed between the front cover and the back cover, the LCD screen is located in the cooling cavity, the sealing gasket is clamped between the front cover and the back cover, a pressure relief liquid capsule is arranged on the sealing gasket, and the pressure relief liquid capsule is connected with the cooling cavity. When the LCD screen is immersed in the cooling liquid, a large amount of heat accumulated on the surface of the LCD screen can be taken away by the cooling liquid, effectively avoiding excessive accumulation of heat on the LCD screen, preventing the LCD screen from being overheated, and improving the heat dissipation efficiency; when the cooling liquid is heated and expanded, the pressure relief liquid capsule can be expanded, avoiding the phenomenon of cooling liquid leakage caused by expansion of the liquid due to temperature increase, calming the pressure fluctuation in the cooling cavity, and ensuring the sealing performance and overall service life of the cooling liquid in the cooling cavity.

Description

Technical Field

[0001] The invention belongs to an optical module structure, and in particular relates to an LCD optical module. Background Art

[0002] The general LCD screen display structure (such as Figure 1 As shown in the figure, the red arrow indicates the direction of light. An ordinary bracket structure is adopted, and a plastic bracket is used to hold the optical device and the LCD screen to form a cooling channel. The area where the temperature rises due to the light energy gathered on the surface of the LCD screen is cooled by relying on the air at a lower temperature. When the power of the light source needs to meet a higher brightness, a large amount of heat is gathered on the surface of the LCD. The cooling fan cannot quickly take away the heat, which soon causes the temperature to rise beyond the working range of the LCD screen, thereby affecting the service life of the LCD screen. Summary of the invention

[0003] An object of the present invention is to provide an LCD optical module that can solve at least one of the above problems.

[0004] According to one aspect of the present invention, there is provided an LCD optical module, comprising a front cover, a rear cover, a sealing glass, an LCD screen and a sealing gasket, wherein the front cover cooperates with the rear cover, the sealing glass comprises two pieces, the two pieces of sealing glass are respectively fixed on the front cover and the rear cover, the LCD screen is arranged between the front cover and the rear cover, a cooling cavity is formed between the front cover and the rear cover, the LCD screen is located in the cooling cavity, the sealing gasket is clamped between the front cover and the rear cover, a pressure relief liquid bag is arranged on the sealing gasket, the pressure relief liquid bag is connected with the cooling cavity, the cooling cavity is loaded with coolant, the width of the LCD screen is smaller than the width of the cooling cavity, and the front cover and the rear cover are locked and fixed at their four top corners by sealing screws when they are assembled.

[0005] The beneficial effects of the present invention are as follows: by providing a cooling chamber, the LCD screen can be immersed in the coolant, and a large amount of heat accumulated on the surface of the LCD screen can be taken away by the coolant and conducted to the front cover and the rear cover for output, thereby effectively avoiding excessive accumulation of heat on the LCD screen, preventing the LCD screen from being overheated, keeping it within a normal operating temperature range, and improving heat dissipation efficiency; by providing a pressure relief liquid capsule, when the coolant expands due to temperature rise, the pressure relief liquid capsule can expand, avoiding the phenomenon of rapid increase in coolant leakage due to expansion of the liquid due to temperature rise, smoothing the pressure fluctuation in the cooling chamber, ensuring the sealing of the coolant in the cooling chamber, and ensuring the overall service life.

[0006] In some embodiments, a receiving groove is provided on the inner side of the front cover and / or the rear cover, and the pressure relief liquid capsule is located in the receiving groove. Thus, the receiving groove facilitates the installation and placement of the pressure relief liquid capsule and provides corresponding space for the expansion of the pressure relief liquid capsule.

[0007] In some embodiments, the sealing pad is clamped at the peripheral matching position of the front cover and the rear cover, and the pressure relief liquid capsule and the sealing pad are an integrally formed structure, thereby facilitating the processing and forming of the pressure relief liquid capsule and ensuring that the pressure relief liquid capsule has a certain elasticity.

[0008] In some embodiments, an opening is provided on one side of the pressure relief liquid capsule, and the opening is connected to the cooling cavity. Thus, by providing the opening, it is convenient to communicate with the cooling cavity, and the flow of the coolant is convenient, so that when the coolant expands due to heat, the corresponding coolant can flow into the pressure relief liquid capsule to prevent the coolant from leaking; at the same time, when the temperature of the coolant drops, the coolant can flow back from the pressure relief liquid capsule to the cooling cavity, and the pressure tends to be balanced, preventing air from penetrating into the cooling cavity from the outside.

[0009] In some embodiments, both the front cover and the rear cover are provided with a slot, and the sealing gasket is inserted into the slot, thereby increasing the sealing effect of the sealing gasket.

[0010] In some embodiments, the first ridge and the second ridge are respectively disposed on both sides of the sealing gasket, and the first ridge and the second ridge are clamped between the front cover and the rear cover and are located outside the card slot. Thus, by providing the first ridge and the second ridge, the contact area between the sealing gasket and the front and rear covers can be increased, thereby increasing the liquid overflow path and width, and better improving the sealing performance.

[0011] In some embodiments, convex ribs are provided on the other two sides of the sealing gasket, and the convex ribs abut against the card slots on the corresponding sides. Therefore, the sealing pressure can be locally increased through the convex ribs, and combined with the first convex ribs and the second convex ribs, the overall sealing performance of the rubber ring is greatly improved, and it is simple and convenient, and the installation is quick, eliminating the use of high-temperature sealant and the gluing process, indirectly saving the use and process of high-temperature glue, and reducing production costs.

[0012] In some embodiments, a first mounting groove is provided on the inner side of the front cover, and a second mounting groove is provided on the inner side of the rear cover, wherein one sealing glass is fixed in the first mounting groove, and another sealing glass is fixed in the second mounting groove, thereby facilitating the rapid positioning and installation of the two sealing glasses.

[0013] In some embodiments, a communicating hole is provided at the bottom of the front cover or the rear cover, the communicating hole is connected to the cooling cavity, and the communicating hole is connected to the opening;

[0014] When the opening is located near the side of the front cover, the communication hole is located on the front cover;

[0015] When the opening is located near the side of the rear cover, the communication hole is located on the rear cover. Thus, by providing the communication hole, the coolant in the cooling cavity can flow into the pressure relief liquid bag.

[0016] In some embodiments, the LCD optical module further includes a cooling pipe, which is located outside the front cover and the rear cover and contacts the front cover and the rear cover. Thus, the heat on the front cover and the rear cover can be quickly dissipated through the cooling pipe, further improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an LCD screen display structure in the prior art.

[0018] Figure 2 It is a structural schematic diagram of the LCD optical module of the present invention.

[0019] Figure 3 It is a schematic diagram of the explosion structure of the LCD optical module of the present invention.

[0020] Figure 4 It is a side view structural schematic diagram of the LCD optical module of the present invention.

[0021] Figure 5 yes Figure 4 AA cross-sectional structure schematic diagram.

[0022] Figure 6 yes Figure 4 Schematic diagram of the BB cross-sectional structure.

[0023] Figure 7 It is a schematic structural diagram of a sealing gasket in an LCD optical module of the present invention.

[0024] Figure 8 It is a schematic cross-sectional structural diagram of a sealing gasket in an LCD optical module of the present invention.

[0025] Fig. 9 It is a structural schematic diagram of the LCD optical module of the present invention being connected to a cooling pipe. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] Reference Figure 2~Figure 7 The LCD optical module includes a front cover 1, a rear cover 2, a sealing glass 3, an LCD screen 4 and a sealing gasket 5. The front cover 1 matches the rear cover 2. The sealing glass 3 is two pieces, and the two sealing glasses 3 are fixed on the front cover 1 and the rear cover 2 respectively. The LCD screen 4 is arranged between the front cover 1 and the rear cover 2. A cooling cavity 6 is formed between the front cover 1 and the rear cover. The LCD screen 4 is located in the cooling cavity 6. The sealing gasket 5 is clamped between the front cover 1 and the rear cover 2. A pressure relief liquid capsule 51 is arranged on the sealing gasket 5. The pressure relief liquid capsule 51 is connected to the cooling cavity 6. The cooling cavity 6 is loaded with a coolant. The coolant is an existing transparent cooling oil, which does not affect the light transmission effect of the LCD screen 4.

[0028] When the LCD screen 4 is installed, the bottom of the frame of the LCD screen 4 can be bonded and fixed to the inner side of the front cover 1 or the rear cover 2, and then the sealing gasket 5 is placed at the mating contact between the front cover 1 and the rear cover 2, and the front cover 1 and the rear cover 2 are fixed by screws. A receiving cavity is formed between the front cover 1 and the rear cover 2, which is convenient for the installation of the LCD screen 4 and the distribution of the cooling cavity 6. The sealing gasket 5 seals the coolant in the cooling cavity 6 to prevent the coolant from leaking out.

[0029] In actual use, in order for the coolant to better remove the heat from the LCD screen 4, the width of the LCD screen 4 is smaller than the width of the cooling chamber, so that the left and right sides of the LCD screen 4 are also located in the coolant, that is, the entire LCD screen 4 is immersed in the coolant. Therefore, through the coolant on the entire periphery of the LCD screen 4, a large amount of heat accumulated on the surface of the LCD screen can be conducted out and transferred to the front cover 1 and the rear cover 2, and then dissipated through the front cover 1 and the rear cover 2. In order to improve the heat dissipation efficiency of the front cover 1 and the rear cover 2, the front cover 1 and the rear cover 2 are made of metal to improve the heat conduction efficiency and facilitate the rapid dissipation of heat; and a cooling fan or an external cooling pipe can be installed on the outside of the entire module to facilitate the rapid removal of module heat.

[0030] The cooling effect of the coolant in the cooling chamber 6 can timely remove the heat of the LCD screen 4, so that the LCD screen can be in a normal operating temperature range, and the operating temperature does not exceed 70°C, thereby increasing the service life of the LCD screen. The shapes of the front cover, the back cover, the LCD screen, etc. can be adjusted according to actual use requirements, and can be square, circular, polygonal, etc., to meet the requirements of different use scenarios.

[0031] When the front cover 1 and the rear cover 2 are assembled, they are locked and fixed at the four top corners by sealing screws 7; in order to ensure the sealing effect when the front cover and the rear cover are matched, a sealing rubber ring 30 is installed at the corresponding side cover matching position of the sealing screw 7 to ensure the corresponding sealing effect.

[0032] A receiving groove 11 is provided on the inner side of the front cover 1 and / or the rear cover 2, and the pressure relief liquid capsule 51 is located in the receiving groove 11. The receiving groove 11 can be provided on the inner side of the front cover 1 or the rear cover 2, located below the LCD screen 4, or can be provided on both the front cover 1 and the rear cover 2, so as to facilitate the placement and installation of the pressure relief liquid capsule 51. In order to ensure that the pressure relief liquid capsule 51 has sufficient expansion space when the coolant expands due to heat, the length and width of the receiving groove 11 are correspondingly greater than the length and width of the pressure relief liquid capsule 51.

[0033] The sealing gasket 5 is clamped at the peripheral joint of the front cover 1 and the rear cover 2, and the pressure relief liquid capsule 51 and the sealing gasket 5 are an integrally formed structure. Among them, the sealing gasket 5 is made of rubber material, and the pressure relief liquid capsule 51 has a certain elasticity to meet the deformation requirements of the pressure relief liquid capsule 51 under the action of hydraulic pressure.

[0034] When the LCD optical module is in use, the LCD screen 4 generates heat during operation, and the coolant in the cooling chamber takes away the heat. The temperature of the coolant is increased by the heat, and the coolant expands to a certain extent under the action of thermal expansion and contraction. When the coolant expands, the pressure relief liquid capsule 51 is forced to expand outward, so that the coolant can flow to the pressure relief liquid capsule 51 after the heat expansion, thereby avoiding excessive hydraulic pressure in the cooling chamber 6 and avoiding leakage caused by excessive coolant pressure.

[0035] An opening 52 is provided on one side of the pressure relief liquid capsule 51, and the opening 52 is connected to the cooling cavity 6. The opening 52 of the pressure relief liquid capsule 51 is connected to the cooling cavity, so that the cooling liquid in the entire module is in a sealed state.

[0036] In actual use, in order to ensure that the pressure relief liquid capsule 51 can expand and contract normally in the receiving groove 11, a through hole 20 is provided on the side of the receiving groove 11 facing away from the opening 52. The through hole 20 runs through the cover body on the corresponding side, and the through hole 20 is connected to the external atmosphere. The through hole 20 does not affect the sealing effect of the pressure relief liquid capsule 51. By providing the through hole 20, the receiving groove 11 is connected to the external atmosphere, so that the air pressure in the receiving groove 11 is kept consistent with the external atmospheric pressure. Therefore, the pressure relief liquid capsule 51 can expand normally when heated and contract normally when cooled under the action of hydraulic pressure and air pressure. Among them, the through hole 20 can be a circular through hole or a square through hole, which can effectively prevent strong light from directly shining on the surface of the pressure relief liquid capsule 51 while ensuring that the receiving groove 11 is connected to the outside world, and avoid local accelerated aging of the pressure relief liquid capsule 51.

[0037] The front cover 1 and the rear cover 2 are both provided with a card slot 8, and the sealing gasket 5 is inserted into the card slot 8. Thus, the sealing gasket 5 can be pressed between the front cover 1 and the rear cover 2 through the card slot 8, and the sealing effect of the sealing gasket 5 is increased.

[0038] like Figure 2 , Figure 7 and Figure 8 As shown, a first ridge 53 and a second ridge 54 are respectively disposed on both sides of the sealing gasket 5 . The first ridge 53 and the second ridge 54 are both clamped between the front cover 1 and the rear cover 2 and are located outside the card slot 8 .

[0039] The other two sides of the sealing gasket 5 are provided with convex ribs 55 , and the convex ribs 55 abut against the clamping grooves 8 on the corresponding sides.

[0040] Among them, the sealing gasket 5, the first convex ridge 53, the second convex ridge 54 and the convex rib 55 are an integral injection molding structure; the first convex ridge 53 and the second convex ridge 54 can increase the contact area between the sealing gasket 5 and the front and rear covers, thereby improving the sealing performance; the convex rib 55 can partially increase the sealing pressure, so that the overall sealing performance of the sealing gasket is improved. Through the coordination of the various structures of the sealing gasket 5 with the front and rear covers, the rapid positioning and installation of the sealing gasket is facilitated, the installation is simple and convenient, and the bonding and fixing of the sealing ring and the front and rear covers is omitted, and the use of high-temperature sealant and the gluing process are omitted, which indirectly saves the use and process of high-temperature glue and reduces the production cost.

[0041] like Figure 2 and Figure 6 As shown, a first mounting groove 12 is provided on the inner side of the front cover 1, and a second mounting groove 21 is provided on the inner side of the rear cover 2, wherein one sealing glass 3 is fixed in the first mounting groove 12, and another sealing glass 3 is fixed in the second mounting groove 21. The sizes of the first mounting groove 12 and the second mounting groove 21 are respectively consistent with the sizes of the corresponding sealing glass, so as to facilitate the insertion and installation of the sealing glass; in order to improve the stability of the installation of the sealing glass 3, each sealing glass is fixed to the corresponding mounting groove by a high-temperature sealant, which plays a sealing role and ensures the stability of the bonding of the sealing glass.

[0042] A communicating hole 9 is provided at the bottom of the front cover 1 or the rear cover 2, the communicating hole 9 is connected to the cooling cavity 6, and the communicating hole 9 is connected to the opening 52;

[0043] When the opening 52 is located close to the side of the front cover 1, the communication hole 9 is located on the front cover 1;

[0044] When the opening 52 is located close to the rear cover 2 , the communication hole 9 is located on the rear cover 2 .

[0045] Now, taking the case where the opening 52 is opened on the side close to the front cover 1 as an example, the opening of the pressure relief capsule 51 is opposite to the side wall of the front cover 1, so that the side wall of the front cover 1 and the pressure relief capsule 51 form a capsule-shaped space. Therefore, when the coolant in the cooling chamber expands due to heat, under the action of hydraulic pressure, the pressure relief capsule 51 is squeezed, and the pressure relief capsule 51 can expand outward, so that the coolant flows into the pressure relief capsule 51 through the connecting hole 9 to achieve pressure relief, and avoid the coolant being squeezed out and leaked out due to excessive hydraulic pressure in the entire cooling chamber. On the contrary, when the coolant cools down, the pressure on the pressure relief capsule 51 gradually decreases, so the pressure relief capsule 51 gradually shrinks, avoiding the infiltration of air from the outside to the inside to cause bubbles in the coolant, and ensuring the light transmission effect of the LCD screen.

[0046] Among them, the connecting hole 9 can be one or more, so that the coolant in the cooling chamber 6 can enter the pressure relief liquid capsule 51, or the coolant in the pressure relief liquid capsule 51 can enter the cooling chamber through the connecting hole 9, so as to facilitate the flow of the coolant during expansion or contraction. In actual use, the size of the opening can be adjusted accordingly and can be reduced to a hole-like size.

[0047] like Fig. 9 As shown, the LCD optical module also includes a cooling pipe, which is located on the outside of the front cover 1 and the rear cover 2 and contacts the front cover 1 and the rear cover 2. The cooling pipe can be installed on the front cover 1 and the rear cover 2, and an external coolant can pass through the cooling pipe. The external coolant can quickly take away the heat on the front cover 1 and the rear cover 2, thereby improving the heat dissipation efficiency of the front and rear covers and making the overall heat dissipation effect better. In actual use, in order to better improve the heat dissipation speed of the front cover 1 and the rear cover 2, a cooling fan can be installed on the outside to dissipate heat from the front cover and the rear cover.

[0048] The LCD optical module of the present invention soaks the LCD screen 4 in a coolant, and the coolant can promptly take away the heat on the entire LCD screen 4; the coolant adopts the existing high-transparency coolant used to cool the display screen, so that the visible light transmittance of the entire module, except the LCD screen, and the entire structural frame can reach 88.3~95.5% through the measurement and calculation of the Linshang Instrument LS108A lens transmittance measuring instrument, thereby not affecting the use of the entire module.

[0049] The above are only preferred embodiments of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. LCD optical module, characterized in that: The invention comprises a front cover (1), a rear cover (2), a sealing glass (3), an LCD screen (4) and a sealing gasket (5), wherein the front cover (1) matches the rear cover (2), the sealing glass (3) comprises two pieces, and the two pieces of sealing glass (3) are fixed on the front cover (1) and the rear cover (2) respectively, the LCD screen (4) is arranged between the front cover (1) and the rear cover (2), a cooling cavity (6) is formed between the front cover (1) and the rear cover, the LCD screen (4) is located in the cooling cavity (6), the sealing gasket (5) is clamped between the front cover (1) and the rear cover (2), a pressure relief liquid capsule (51) is arranged on the sealing gasket (5), the pressure relief liquid capsule (51) is connected to the cooling cavity (6), the cooling cavity (6) is loaded with cooling liquid, the width of the LCD screen (4) is smaller than the width of the cooling cavity (6), and the front cover (1) and the rear cover (2) are locked and fixed at four top corners thereof by sealing screws (7) when they are assembled; A receiving groove (11) is provided on the inner side of the front cover (1) and / or the rear cover (2), and the pressure relief liquid bag (51) is located in the receiving groove (11); The sealing gasket (5) is clamped at the peripheral matching position of the front cover (1) and the rear cover (2), and the pressure relief liquid bag (51) and the sealing gasket (5) are an integrally formed structure; An opening (52) is provided on one side of the pressure relief liquid bag (51), and the opening (52) is in communication with the cooling chamber (6); A through hole (20) is provided on a side of the containing groove (11) facing away from the opening (52), the through hole (20) passing through the cover body on the corresponding side, and the through hole (20) is connected to the external atmosphere; A communicating hole (9) is provided at the bottom of the front cover (1) or the rear cover (2), the communicating hole (9) being in communication with the cooling cavity (6), and the communicating hole (9) being in communication with the opening (52); When the opening (52) is located close to a side of the front cover (1), the communication hole (9) is located on the front cover (1); When the opening (52) is located close to a side of the rear cover (2), the communication hole (9) is located on the rear cover (2).

2. The LCD optical module according to claim 1, characterized in that: The front cover (1) and the rear cover (2) are both provided with a card slot (8), and the sealing gasket (5) is card-engaged in the card slot (8).

3. The LCD optical module according to claim 2, characterized in that: A first convex ridge (53) and a second convex ridge (54) are respectively provided on both sides of the sealing gasket (5); the first convex ridge (53) and the second convex ridge (54) are clamped between the front cover (1) and the rear cover (2) and are located outside the card slot (8).

4. The LCD optical module according to claim 3, characterized in that: The other two sides of the sealing gasket (5) are provided with convex ribs (55), and the convex ribs (55) abut against the clamping grooves (8) on the corresponding sides.

5. The LCD optical module according to claim 1, characterized in that: A first mounting groove (12) is provided on the inner side of the front cover (1), and a second mounting groove (21) is provided on the inner side of the rear cover (2); one piece of the sealing glass (3) is fixed in the first mounting groove (12), and another piece of the sealing glass (3) is fixed in the second mounting groove (21).

6. The LCD optical module according to claim 1, characterized in that: It also includes a cooling pipe, which is located outside the front cover (1) and the rear cover (2) and is in contact with the front cover (1) and the rear cover (2).

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