TWI247188B - Cooling apparatus for light valve - Google Patents

Abstract

A cooling apparatus for light valve of the present invention includes a control box near a light valve, and a heat pipe and heat conduction assembly pasted upon a surface of the control box. The heat conduction assembly is connected to an evaporator of the heat pipe and a surface of it contacts with the light valve. The heat of the light valve conducts to the control box through the heat conduction assembly, and then the heat diffuses to the control box via the heat pipe. Thus, the heat of the light valve can be removed away through the large area of the control box, so as to promote the cooling efficiency and simplify the cooling apparatus.

Description

1247188 V. DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a heat dissipating structure, and more particularly to a heat dissipating structure applied to a light valve. [Prior Art] In the projection device, the light beam is projected onto the light valve by the illumination system, and after the light modulation process is performed by the light valve, the image is presented on the screen by the projection lens, and the light beam is continuously irradiated onto the light valve. Accumulation of heat on the light valve will affect its operational efficiency. Therefore, it is necessary to provide a proper heat dissipation mechanism to cool the light valve. Referring to FIG. 1 and FIG. 2 , a control box 2 is connected to the back of the light valve 1 , and a circuit board 3 is arranged in the control box 2 to drive the light valve 1 to operate. The control box is arranged to prevent electromagnetic wave interference. The control box 2 is provided with an opening 4, and a fan 5 is disposed on the light valve 1. The fan 5 is disposed on the control box 2 by using the opening 4; the fan 5 is forced to take away the heat of the light valve 1 to achieve the purpose of heat dissipation, and the fan 5 The noise generated by the operation is easily transmitted from the vent of the projection device and affects the hearing experience. The fan 5 has a short life and needs to be replaced from time to time, and it occupies a certain volume, which will affect the space configuration and increase the volume of the heat dissipation structure; therefore, the conventional knowledge The heat dissipation structure of the fan has problems such as noise, short life, and large volume, and needs to be solved and improved. SUMMARY OF THE INVENTION One object of the present invention is to provide a light valve heat dissipation structure, which directly affixes a heat pipe and a heat conductive member to a control box and uses a large area of the surface of the control box to dissipate heat, thereby simplifying the heat dissipation structure and improving heat dissipation efficiency. . In order to achieve the above object, the light valve heat dissipation structure of the present invention is to control the box

1247188 SNI/- 2 /IV The control system is used to control the thermal conductivity of the flat member and the heat of the tube will be used to re-valve the light area of the valve to use the surface of the ancient mouth valve ~ and then the light is in the valve and then light, with the upper body box Secondly, the heat pipe of the first and second heat conduction collectors is thermally conductive and the amount of the heat pipe is too transparent, and the surface of the heat pipe is guided by the heat valve, and the surface of the contact box is in contact with the heat box. Dage, the heat, the tube to the heat of the surface of the large surface of the body box box 22nd in the use of the paste Liping by the 'borrowing body: and the next paragraph as the hand Ming Shu technology to add to the use of The picture is combined, the matching and the purpose, the case is applied to Shidajia. In order to compare the structure and the performance of the first one, the hot-type Benz is scattered, and the implementation is effective and simple.

Figure 4 and Figure 3 The first reading includes the package 〇1—I lead one and 1—I one—I box control box to form the heat control valve, its light, Ming 2 send 1 this, The hot box is made into the first group, the control unit, etc., and the copper phase is inserted, and 2 aluminum 1 1 is used as the valve 1 , and the light body is driven to drive the second material to the first material and the guide surface 1 ^ _ back 1 Heat r-H r~H The ancient valve body is connected to the light box by one. The first one is connected by the box one - I 1 - • 1 1 control has 1 set on the box and 1 is controlled - ^ Set to body 1, the box valve 6 1 light 6 quasi machine to the light to the edge of the fixed solid -" " * junction light - - <, in 1 τ-H fli] Γ-Η ^^^ lock Body 1 edge box one - I Monday mouth τ-Η First open 1 ^ ^ 1-1 1 - I 1 ΊΧ 开设 Open a set of flat surface meter can be inside one of 3 - _ 0 / ^ IX Γ - ΠΛ -Α-官1热体' Box CM II 1 The first part, the heat indicator and the figure 3 LO 1—I —— _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Type ^ One end heat type not shown in Figure C with glue 3 heat 1 guide 1 tube tube heat or, 4 side 1 table 12 pieces 1 set 1 solid one box Convex guide system, side shape 1 one into oo II body one - I 〇〇 IX one - I CN1 end plate 1 thermal base 1 set in the body of the box 3 convex two 1-I one and the tube 1 Heat 2 2 in one -> I - I plate member connected to the base heat system guide 2, 1 - a cvi piece 2 2 heat 11 guide block

1247188 V. Description of the invention (3) The heat conducting member 12 and the light valve 1 may be provided with a thermal pad (not shown) to eliminate the high contact thermal resistance of the air as the heat conducting member 1 2 and the light valve 1 Conducting the medium and improving the conduction effect. The control box 1 1 is provided with a circuit board 13 . The circuit board 13 is provided with a through hole 13 1 1 opposite to the center of the light valve 1 for the bumps 12 2 of the heat conducting member 1 2 to pass through, so that the bumps 1 2 2 can be in contact with the light valve 1 to derive the heat of the light valve, and the surface of the circuit board 13 facing the light valve 1 is in contact with the peripheral circuit portion of the light valve 1 for electrical connection. When the light valve 1 is actuated, the heat generated by the light pipe 1 is transmitted to the second casing 1 1 2 by the heat conducting member 12, and then passed through the heat pipe 1 1 3 which is flatly attached to the surface of the second casing 1 1 2 to light the valve 1. The heat is dispersed on the second casing 1 1 2 to dissipate heat by using a large area of the second casing 1 12 to improve the heat dissipation effect. The heat dissipating structure 10 of the present invention directly utilizes the large-area control box 1 1 of the existing structure to dissipate heat and heat the heat pipe 1 13 and the heat-conducting member 12 to the inner surface of the control box 1 1 , so the heat dissipation structure of the present case does not affect It is arranged in the space of the projection device, and no fan or heat sink is needed to assist the heat dissipation, so that the simplified heat dissipation structure can be achieved. In addition, as shown in FIG. 6, the heat conducting member 12A may be composed of a first heat conducting sheet 1 2 1A and a second heat conducting sheet 1 2 2A, wherein the first heat conducting sheet 1 2 1A is connected to the heat pipe 1 1 3 heat collecting unit. The end 1 1 3 1 is fixed to the second casing 1 1 2 , and the second thermal conductive sheet 1 2 2A is screwed on the first thermal conductive sheet 1 2 1A, and the second thermal conductive sheet 1 22A has a substrate 1 2 2 1 A , substrate 1 2 2 1 A side 1 2 2 2 A flat

Page 10 1247188 V. Invention Description (4) On the first thermal conductive sheet 1 2 1 A, and the other side is convexly provided with a bump 1 2 2 3 A, and the bump 1 2 2 3 A passes through the circuit board 1 3 through holes 1 3 1 are in contact with the light valve 1, and a plurality of fixing holes 1 2 2 4 A are provided on the periphery of the substrate 1 2 2 1 A; when the first case 1 1 1 is locked to the light valve 1

After the peripheral light machine 6 and the heat pipe 1 13 and the first heat conducting piece 1 2 1A are fixed on the second case 1 1 2, the locking element (not shown) is passed through the circuit from the fixing hole 1 224A. After the plate 1 3 is locked to the periphery of the light valve 1 to clamp the fixed circuit board 13 and the light valve 1, and the first thermal conductive sheet 1 2 1A and the second thermal conductive sheet 1 2 2 A reuse another locking component The utility model can form the heat dissipation structure of the light valve of the present invention. Therefore, by dividing the heat conducting member 1 2 A into two components, it is convenient to assemble and fix the circuit board 13 , the light valve 1 and the heat dissipation. Structure 1 0 . The above is only to facilitate the description of the preferred embodiments of the present invention, and the scope of the present invention is not limited to the preferred embodiments, and any changes made in accordance with the present invention may be made without departing from the spirit of the present invention. It belongs to the scope of patent application of the present invention.

1247188 Brief description of the drawing [Simplified description of the drawing] Fig. 1 is a perspective view of the heat dissipation structure of the conventional light valve. Figure 2 is an exploded view of the conventional heat dissipation structure of the light valve. Figure 3 is a perspective view of the heat dissipation structure of the light valve of the present invention. Figure 4 is an exploded view of the heat dissipation structure of the light valve of the present invention. Fig. 5 is a perspective view showing the structure of a second casing of the present invention. Figure 6 is an exploded view of a heat dissipation structure of a light valve according to another embodiment of the present invention. [Brief Description] Light Valve Light Machine Heat Dissipation Structure Control Box First Case Opening Second Case Heat Pipe Collecting End Fixing Piece Heat Conducting Substrate Bump Heat Conductor First Thermal Conductor Second Thermal Conductor 1 610

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12 1 12 2 1 2 A 1 2 1 A 1 2 2 A

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Claims (1)

1247188 VI. Patent application scope 1. A light valve heat dissipation structure includes: a control box disposed near the light valve, the surface of which is flatly attached with at least one heat pipe, the heat pipe has a heat collecting end; and a heat conducting member, It is disposed on the control box and connected to the heat collecting end of the heat pipe, and one surface of the heat conducting member is in contact with the light valve. 2. The light valve heat dissipation structure according to claim 1, wherein the heat pipe and the heat conductive member are flat on the same surface of the control box. 3. The light valve heat dissipation structure according to claim 2, wherein the surface of the control box is an inner surface of the control box. 4. The light valve heat dissipation structure according to claim 1, wherein the control box is composed of a first box body and a second box body. 5. The light valve heat dissipation structure according to claim 1, wherein a heat conducting pad is disposed between the heat conducting member and the light valve. 6. The light valve heat dissipation structure according to claim 1, wherein the heat pipe is fixed to the control box by a fixing member. 7. The light valve heat dissipation structure according to claim 1, wherein the heat pipe is fixed to the control box by using a thermal adhesive. 8. The light valve heat dissipation structure according to claim 1, wherein the control box is provided with a circuit board. 9. The light valve heat dissipation structure of claim 8, wherein the heat conductive member passes through the circuit board and is in contact with the back surface of the light valve. 1 . The light valve heat dissipation structure according to claim 8 , wherein the heat conductive member is composed of a first heat conductive sheet and a second heat conductive sheet, wherein the second heat conductive sheet is used for fixing the circuit board and the light valve. Page 14