JP3168202U - Structure of thin plate heat pipe - Google Patents

Abstract

A structure of a thin plate type heat pipe that improves the circulation efficiency of a working fluid and improves the heat transfer effect to the far end. A main body 10 and at least one wick structure 2 are provided, and the main body 10 forms a sealed chamber made of a flat space by flat plates 11 and 12, and the wick structure 2 made of a powder sintered body or the like is formed in the chamber. Is disposed over the entire length of the chamber, and a cooling fluid passage is formed along the wick structure 2. A heating element and a radiator are arranged on the first end 101 at one end of the main body and the second end 102 located on the opposite side, respectively, and the working fluid evaporated and vaporized by the heat of the heating element is passed through the passage. Then, the working fluid which is led to the other end side, cooled and condensed and liquefied by the radiator on the other end side is returned by the wick structure 2. [Selection] Figure 1

Description

The present invention relates to the structure of a thin plate heat pipe, and in particular, can be configured in an arbitrary shape as necessary, has a function of transferring heat to the far end, and can increase the circulation speed of the working fluid. Thus, the present invention relates to a structure of a thin plate heat pipe that can realize an extremely excellent heat dissipation effect.

As science and technology advances, the output and function of electronic devices has also improved. This generates a lot of heat when the electronic device is activated. If this heat cannot be radiated immediately, the heat accumulates inside the electronic element and the temperature rises, and the function is affected. In a severe case, the electronic element is damaged. Therefore, in order to effectively solve the heat dissipation problem of the electronic device, a vapor chamber and a thin heat pipe having excellent heat transfer effect have been developed. The vapor chamber and the thin heat pipe are used in combination with a radiator to effectively solve the heat radiation problem.

In the structure of a conventional thin heat pipe, an annular wick structure is formed on the inner wall of the heat pipe by filling and sintering the metal powder in the hollow portion of the large-diameter heat pipe. Thereafter, the inside of the heat pipe is evacuated and filled with the working fluid. Finally, it is sealed and pressed to form a thin heat pipe. Since the wick structure is annularly provided in the entire interior of the conventional thin heat pipe, the annular wick structure is also pressed when pressed. As a result, the steam passage inside the heat pipe is narrowed or blocked, the gas-liquid phase change of the working fluid is affected, and the heat transfer effect is reduced.

In addition, the above-described conventional thin heat pipe has an overall tube diameter fixed to a predetermined tube diameter, and the shape and tube diameter cannot be designed according to the user's needs (for example, one end portion). It is not possible to increase the aperture and decrease the aperture of the other end, or to make the apertures of both ends the same and increase or decrease the aperture of the intermediate portion). In addition, since the wick structure in the heat pipe is also formed in a predetermined ring shape, when the shape of the thin heat pipe is changed, the wick structure (that is, the sintered metal powder) of the curved or recessed portion is formed. It will peel off. Thereby, the heat transfer effect of a thin heat pipe will fall significantly. In addition, the thin heat pipe has only an annular wick structure and cannot be changed to another structure. In addition, when the heat pipe is pressed, the upper and lower layers of the annular wick structure are pressed and stacked, so that there is a limit to reducing the thickness.

A conventional vapor chamber includes a rectangular casing and a wick structure provided on a wall surface of the chamber inside the casing. The casing is filled with a working fluid. One surface of the housing (i.e., the evaporation portion) is attached on a heating element (e.g., CPU, south / north bridge chip) to absorb heat generated from the heating element. As a result, the working fluid in a liquid state evaporates in the evaporation section of the housing and changes into a gaseous state, and heat is transmitted to the condensation section of the housing. Next, the working fluid in a gaseous state is phase-changed to a liquid state after being cooled in the condensing part. The working fluid in a liquid state circulates to the evaporation section by the action of gravity or a wick structure. The circulation of the working fluid effectively dissipates heat by transferring heat.

Conventional vapor chambers have a suitable heat transfer effect. However, the heat transfer method of the vapor chamber is one that absorbs heat by one surface and then transfers heat to the other surface by the phase change of the working fluid in the chamber. Heat can not be transferred to the far end to dissipate heat. That is, the vapor chamber is applied only to heat transfer in a large area and not to heat transfer to the far end.

That is, the conventional thin heat pipe and vapor chamber have the following drawbacks (1) to (3).
(1) There is a limit to thinning, and the tube diameter, wick structure and shape cannot be changed arbitrarily.
(2) Heat cannot be transferred to the far end and is heavy.
(3) Cost is high.

The inventors of the present invention and those skilled in the art have conducted research and development in order to solve the above-described conventional problems and disadvantages.

JP 2007-107870 A

The first object of the present invention is to provide a structure of a thin plate heat pipe that can quickly transfer the heat absorbed by the main body to the far end by increasing the circulation efficiency of the working fluid by at least one wick structure. There is to do.
The second object of the present invention is to provide a structure of a thin plate heat pipe which is low in cost.
A third object of the present invention is to provide a structure of a thin plate heat pipe that is light in weight and thin.

In order to solve the above-described problems, the structure of the thin plate heat pipe of the present invention includes a main body and at least one wick structure. The body has a chamber, a first end, and a second end located opposite the first end. At least one wick structure is provided in the chamber, defines at least one passage with the chamber, and is formed extending from the first end along the second end.

With the structure of the thin plate heat pipe of the present invention, the circulation efficiency of the working fluid can be greatly increased, and the absorbed heat can be quickly transmitted to the far end.

1 is an exploded perspective view showing a structure of a thin plate heat pipe according to a first embodiment of the present invention. It is a disassembled perspective view which shows the other aspect of the structure of the thin plate type heat pipe by 1st Embodiment of this invention. It is a perspective view which shows the structure of the thin plate type heat pipe by 1st Embodiment of this invention. It is sectional drawing which shows the structure of the thin plate type heat pipe by 1st Embodiment of this invention. It is a perspective view which shows the other aspect of the structure of the thin plate type heat pipe by 1st Embodiment of this invention. It is a perspective view which shows the other aspect of the structure of the thin plate type heat pipe by 1st Embodiment of this invention. It is a perspective view which shows the structure of the thin plate type heat pipe by 2nd Embodiment of this invention. It is sectional drawing which shows the structure of the thin plate type heat pipe by 2nd Embodiment of this invention. It is a perspective view which shows the other aspect of the structure of the thin plate type heat pipe by 2nd Embodiment of this invention. It is a disassembled perspective view which shows the structure of the thin plate type heat pipe by 2nd Embodiment of this invention. It is a disassembled perspective view which shows the other aspect of the structure of the thin plate type heat pipe by 2nd Embodiment of this invention. It is a perspective view which shows the structure of the thin plate type heat pipe by 3rd Embodiment of this invention. It is sectional drawing which shows the structure of the thin plate type heat pipe by 3rd Embodiment of this invention. It is a perspective view which shows the other aspect of the structure of the thin plate type heat pipe by 3rd Embodiment of this invention. It is a perspective view which shows the other aspect of the structure of the thin plate type heat pipe by 3rd Embodiment of this invention. It is a perspective view which shows the structure of the thin plate type heat pipe by 4th Embodiment of this invention. It is sectional drawing which shows the structure of the thin plate type heat pipe by 4th Embodiment of this invention. It is a perspective view which shows the other aspect of the structure of the thin plate type heat pipe by 4th Embodiment of this invention. It is a perspective view which shows the use condition of the structure of the thin plate type heat pipe by one Embodiment of this invention.

DESCRIPTION OF EMBODIMENTS Embodiments showing the objects, features, and effects of the present invention will be described in detail with reference to the drawings.

(First embodiment)
Please refer to FIG. 1, FIG. 3, FIG. 4 and FIG. As shown in FIGS. 1, 3, 4, and 19, the structure 1 of the thin plate heat pipe according to the first embodiment of the present invention includes a main body 10 and at least one wick structure 2. The main body 10 has a chamber 100, a first end 101, and a second end 102 located on the opposite side of the first end 101. The main body 10 is configured by connecting a first flat plate 11 and a second flat plate 12 to face each other, and a chamber 100 is defined therein. Corresponding heat generating elements (for example, CPU, south / north bridge chip, GPU, etc.) are affixed to the outside (that is, the evaporation portion) adjacent to the first end portion 101 of the first flat plate 11. As a result, heat generated from the heating element (not shown) is transmitted to the first end portion 101.

  At least one radiator 4 is opposedly connected to the outer side (that is, the condensing part) adjacent to the second end 102 of the second flat plate 12. In the present embodiment, the radiator 4 exemplifies the radiator 4 configured by laminating a plurality of radiating fins, but is not limited thereto. The radiator 4 may be a radiator in which aluminum is pressed or other radiator.

  The chamber 100 includes a first side wall 1001, a second side wall 1002 facing the first side wall 1001, a third side wall 1003, and a fourth side wall 1004 facing the third side wall 1003. Have. Further, the first side wall 1001, the second side wall 1002, the third side wall 1003, and the fourth side wall 1004 are connected to each other to form a space of the chamber 100. The chamber 100 is filled with a working fluid. In the first embodiment of the present invention, the working fluid is exemplified by water, but is not limited thereto. When carrying out the present invention, fluid such as pure water, inorganic compounds, alcohols, ketones, liquid metals, refrigerants, organic compounds, and mixtures thereof can be used as the working fluid.

  The first end 101 is one end of the main body 10, and the second end 102 is the other end of the main body 10. Further, based on the position where the thin plate type heat pipe is arranged and the required heat transfer effect to the far end, the length, width and the first flat plate 11, the second flat plate 12 and the wick structure 2 The shape can be configured. For example, as shown in FIG. 1, the shape of the first flat plate 11 and the second flat plate 12 is substantially Z-shaped. The wick structure 2 is substantially Z-shaped in accordance with the shapes of the first flat plate 11 and the second flat plate 12. However, the shape of the 1st flat plate 11, the 2nd flat plate 12, and the wick structure 2 is not limited only to this, A curved shape, L shape, or arbitrary shapes may be sufficient.

Please refer to FIG. 1, FIG. 3 and FIG. As shown in FIGS. 1, 3, and 4, the wick structure 2 is provided in the chamber 100. The wick structure 2 also defines at least one passage 5 in the chamber 100. The passage 5 is used for flowing a working fluid in a gaseous state. Further, the wick structure 2 is formed to extend in the direction of the second end portion 102 located on the opposite side of the first end portion 101 in the chamber 100. The wick structure 2 includes a first side surface 201, a second side surface 202 opposite to the first side surface 201, a third side surface 203, and a fourth side surface 204 opposite to the third side surface 203. Have. In the first embodiment of the present invention, the wick structure 2 is provided at a position adjacent to the fourth side wall 1004. Accordingly, the first side surface 201 of the wick structure 2 is brought into contact with the first side wall 1001 inside the chamber 100, and the second side surface 202 is brought into contact with the second side wall 1002. Further, the fourth side surface 204 is attached to the fourth side wall 1004.
However, when the present invention is implemented, the wick structure 2 is provided at a position adjacent to the third side wall 1003, the first side surface 201 abuts on the first side wall 1001, and the second side surface 202 is the second side wall. Alternatively, the third side surface 203 may be attached to the third side wall 1003 in contact with the second side 1003.

  The wick structure 2 has a guiding effect on the working fluid, provides a large number of circulation channels, and has a supporting effect that reinforces from the inside of the chamber. The wick structure 2 according to the first embodiment of the present invention has the following first to third aspects.

  The wick structure 2 according to the first aspect is made of a powder sintered body. The wick structure 2 according to the second aspect is composed of a flat metal body. The metal body is made of aluminum, copper, silver or an alloy. A wick structure is formed on the metal body. The wick structure includes a mesh, a fiber, a sintered powder, a combination of a mesh and a powder sintered body, or a groove. The wick structure according to the third aspect is composed of a plurality of flat metal bodies. The metal body is made of aluminum, copper, silver or an alloy. A powder sintered ring is fitted on the outer edge of the metal body.

  Please refer to FIG. 1, FIG. 3 and FIG. When heat is generated from the heating element, the heat is first transmitted to the first flat plate 11. The liquid working fluid in the evaporation section of the first flat plate 11 absorbs heat and evaporates, and changes into a gaseous working fluid. Further, since the temperature of the second end portion 102 is low, the working fluid in a gas state flows along the passage 5 in the direction of the second end portion 102. Thereby, the working fluid in a gaseous state not only moves from the evaporation part of the first flat plate 11 to the condensing part of the second flat plate 12 but also moves from the first end 101 to the second end 102. To do. Next, the heat absorbed by the radiator 4 disposed on the second flat plate 12 and the second end portion 102 is transmitted to the radiation fin and radiated to the outside. The speed at which the working fluid in the gaseous state is cooled is accelerated by the second flat plate 12 and the condensing part of the second end portion 102, so that the working fluid in the gaseous state rapidly changes in phase from the liquid state. Next, the working fluid in the liquid state continues to circulate by quickly circulating to the first flat plate 11 and the evaporation portion of the first end 101 by the wick structure 2. As a result, the circulation efficiency of the working fluid can be effectively increased, the absorbed heat can be quickly transmitted to the far end, and an extremely excellent heat dissipation effect can be realized.

  Please refer to FIG. FIG. 5 is a perspective view showing another embodiment of the wick structure 2 described above. As shown in FIG. 5, one end of the wick structure 2 has at least one extension 26. The extension portion 26 is provided at a position adjacent to the first end portion 101. Further, the extended portion 26 is configured to protrude from the side of one end of the wick structure 2 in the direction of the corresponding passage 5. That is, the extended portion 26 is configured to protrude from the third side surface 203 of the wick structure 3 toward the corresponding passage 5. If the wick structure 2 is provided at a position adjacent to the third side wall 1003, the extended portion 26 is configured to protrude from the fourth side surface 204 of the wick structure 2 toward the corresponding passage 5.

  Please refer to FIG. FIG. 2 is an exploded perspective view showing another embodiment of the first flat plate 11 and the second flat plate 12 described above. As shown in FIG. 2, a wick structure 13 is provided inside each of the first flat plate 11 and the second flat plate 12. The wick structure 13 is used for accelerating the speed at which the working fluid in the liquid state is circulated to the evaporation section. This effectively promotes the circulation efficiency of the working fluid.

  The aforementioned wick structure 13 is composed of a mesh, a fiber, a powder fired body, a combination of a mesh and a powder fired body, or a minute groove.

Please refer to FIG. As shown in FIG. 6, a space 15 is formed between the second end 102 of the other end of the wick structure 13. The space 15 communicates with the corresponding passage 5.

  As can be seen from the above description, the structure 1 of the thin plate heat pipe according to the first embodiment of the present invention has a function of transferring heat to the far end, so that the heat dissipation effect can be greatly enhanced. In addition, the design flexibility is high, the weight is light, the thickness is thin, and the cost can be saved.

(Second Embodiment)
Please refer to FIG. 7, FIG. 8, and FIG. FIG. 7 is a perspective view illustrating a structure of a thin plate heat pipe according to a second embodiment of the present invention. FIG. 8 is a cross-sectional view illustrating a structure of a thin plate heat pipe according to a second embodiment of the present invention. FIG. 10 is an exploded perspective view showing the structure of a thin plate heat pipe according to the second embodiment of the present invention. Since the structure, connection relation and effect of the thin plate type heat pipe according to the second embodiment of the present invention are substantially the same as those of the first embodiment, the same parts will not be described in detail here. The structure of the thin plate type heat pipe according to the second embodiment of the present invention is different from that of the first embodiment in that the wick structure 2 is provided in the central portion of the chamber 100. A first passage 51 is defined between the third side surface 203 of the wick structure 2 and the third side wall 1003 of the second flat plate 12 facing each other. Further, a second passage 52 is defined between the fourth side surface 204 of the wick structure 2 and the fourth side wall 1004 of the second flat plate 12 facing each other. The first passage 51 and the second passage 52 are used for flowing a working fluid in a gaseous state. As a result, the working fluid in the gaseous state is quickly moved in the direction of the second end portion 102 along the first passage 51 and the second passage 52 by the diversion action by the first passage 51 and the second passage 52. To flow. This effectively increases the speed at which heat is transferred to the far end.

  Please refer to FIG. FIG. 9 is a perspective view showing another embodiment of the wick structure 2. As shown in FIG. 9, one end of the wick structure 2 has at least one extension 26. The extension portion 26 is provided at a position adjacent to the first end portion 101. In addition, the extended portion 26 is configured to protrude from the third side surface 203 of the wick structure 2 to the first passage 51 and from the fourth side surface 204 to the second passage 52.

  Please refer to FIG. FIG. 11 is an exploded perspective view showing another embodiment of the first flat plate 11 and the second flat plate 12 described above. As shown in FIG. 11, a wick structure 13 is provided inside each of the first flat plate 11 and the second flat plate 12. The wick structure 13 is used for quickly circulating the working fluid in a liquid state to the evaporation unit. This effectively promotes the circulation efficiency of the working fluid. The wick structure 13 includes a mesh, a fiber, a powder sintered body, a combination of a mesh and a powder sintered body, or a minute groove.

(Third embodiment)
Please refer to FIG. 12 and FIG. FIG. 12 is a perspective view illustrating a structure of a thin plate heat pipe according to a third embodiment of the present invention. FIG. 13 is a cross-sectional view illustrating a structure of a thin plate heat pipe according to a third embodiment of the present invention. Since the structure, connection relation and effect of the thin plate type heat pipe according to the third embodiment of the present invention are substantially the same as those of the first embodiment, the same parts will not be described in detail here. The structure of the thin plate type heat pipe according to the third embodiment of the present invention is that the wick structure 2 includes the first wick structure 21, the second wick structure 22, and the third wick structure 23. Different. The first wick structure 21, the second wick structure 22 and the third wick structure 23 are arranged in the chamber 100 at intervals. Further, a first passage 51 is defined between the first wick structure 21 and the third side wall 1003 of the second flat plate 12 facing each other. A second passage 52 and a third passage 53 are defined between the first wick structure 21, the second wick structure 22, and the third wick structure 23, respectively. Further, a fourth passage 54 is defined between the third wick structure 23 and the fourth side wall 1004 of the second flat plate 12 facing each other.

The 1st channel | path 51, the 2nd channel | path 52, the 3rd channel | path 53, and the 4th channel | path 54 are used in order to flow the working fluid of a gaseous state. The working fluid in the gaseous state is divided into the first passage 51, the second passage 52, the third passage 53, and the fourth passage 54. It flows rapidly in the direction of the second end 102 along the passage 53 and the fourth passage 54. Further, the working fluid in a liquid state rapidly circulates to the evaporation portion by the first wick structure 21, the second wick structure 22, and the third wick structure 23. Thereby, the circulation efficiency of the working fluid can be effectively increased, and heat can be effectively transmitted to the far end.

Here, the number of the wick structures 2 is not limited to three, that is, the first wick structure 21, the second wick structure 22, and the third wick structure 23. That is, the number of the wick structures 2 can be determined based on the width of the main body 10, the desired heat conduction efficiency, and the working fluid circulation efficiency. Refer to FIG. As shown in FIG. 14, four wick structures 2 are arranged in the chamber 100 at intervals. That is, the wick structure 2 further includes a fourth wick structure 24. The fourth wick structure 24 is provided between the third wick structure 23 and the fourth side wall 1004 of the second flat plate 12. The fourth wick structure 24 defines a fourth passage 54 and a fifth passage 55. Since the effect of the first passage 51 is the same as that of the second passage 52, the third passage 53, and the fourth passage 54, the fifth passage 55 is not described in detail here.

Refer to FIG. FIG. 15 is a perspective view showing another embodiment of the first wick structure 21, the second wick structure 22, and the third wick structure 23. As shown in FIG. 15, one end of the first wick structure 21, the second wick structure 22, and the third wick structure 23 has at least one extension portion 26. The extension portion 26 is provided at a position adjacent to the first end portion 101. In addition, each extension portion 26 is configured to project from one end of each of the first wick structure 21, the second wick structure 22, and the third wick structure 23 in the direction of the corresponding passage on both sides. More specifically, the extended portion 26 of the first wick structure 21 is configured to protrude from both sides of one end of the first wick structure 21 in the direction of the first passage 51 and the second passage 52. The The extended portion 26 of the second wick structure 22 is configured to protrude from both sides of one end of the second wick structure 22 in the direction of the second passage 52 and the third passage 53. The extended portion 26 of the third wick structure 23 is configured to project from both sides of one end portion of the third wick structure 23 in the direction of the third passage 53 and the fourth passage 54.

(Fourth embodiment)
Please refer to FIG. 16 and FIG. FIG. 16 is a perspective view showing a structure of a thin plate heat pipe according to a fourth embodiment of the present invention. FIG. 17 is a cross-sectional view illustrating a structure of a thin plate heat pipe according to a fourth embodiment of the present invention. Since the structure, connection relation, and effect of the thin plate heat pipe according to the fourth embodiment of the present invention are substantially the same as those of the first embodiment, the same parts will not be described in detail here. The structure of the thin plate type heat pipe according to the fourth embodiment of the present invention is that the wick structure 2 includes a first wick structure 21 and a second wick structure 22 facing the first wick structure 21. Different from one embodiment. The first wick structure 21 is provided at a position adjacent to the third side wall 1003 of the second flat plate 12, and the second wick structure 22 is adjacent to the fourth side wall 1004 of the second flat plate 12. It is provided at a matching position. The first wick structure 21 and the second wick structure 22 also define the passage 5 with the chamber 100.

By the first wick structure 21 and the second wick structure 22, the working fluid in a liquid state quickly circulates to the evaporation unit. Thereby, the circulation efficiency of the working fluid can be effectively increased, and heat can be effectively transmitted to the far end.

Please refer to FIG. FIG. 18 is a perspective view showing another embodiment of the first wick structure 21 and the second wick structure 22. As shown in FIG. 18, one end of the first wick structure 21 has a first extension 261. In addition, one end portion of the second wick structure 22 has a second extended portion 262. The first extension portion 261 and the second extension portion 262 are provided at positions adjacent to the first end portion 101. The first extended portion 261 is configured to protrude in the direction of the corresponding passage 5. The second extension 262 is configured to protrude in the direction of the first extension 261 (that is, the direction of the corresponding passage 5 and the first extension 261).

As can be seen from the above, the thin plate heat pipe structure 1 of the present invention has high design flexibility, is light in weight, and can be made as thin as the vapor chamber or thinner than the vapor chamber. . In addition, it has a function of quickly transmitting heat equivalent to that of a heat pipe to the far end, and can effectively save costs and realize an extremely excellent heat dissipation effect.

As can be seen from the above, the thin plate heat pipe of the present invention has the following advantages (1) to (5) as compared with the prior art.
(1) It has an extremely excellent heat dissipation effect.
(2) Light weight, thin thickness, and a function of rapidly transferring heat to the far end.
(3) Cost can be saved.
(4) The circulation efficiency of the working fluid can be increased.
(5) High design flexibility.

  The above description shows a preferred embodiment of the present invention, and all the modifications using the method, shape, structure and apparatus of the present invention described above are also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Structure of thin plate type heat pipe 10 Main body 100 Chamber 1001 1st side wall 1002 2nd side wall 1003 3rd side wall 1004 4th side wall 101 1st edge part 102 2nd edge part 11 1st flat plate 12 1st 2 flat plates 13 wick structure 15 space 2 wick structure 201 1st side surface 202 2nd side surface 203 3rd side surface 204 4th side surface 21 1st wick structure 22 2nd wick structure 23 3rd wick structure 24 4th wick structure 26 expansion part 261 1st expansion part 262 2nd expansion part 3 base 4 heat radiator 5 channel | path 51 1st channel | path 52 2nd channel | path 53 3rd channel | path 54 4th channel | path 55 5th Passage

Claims (20)

A structure of a thin plate type heat pipe having a main body and at least one wick structure,
The main body includes a first end portion that contacts a heat generating element with a chamber that forms a space filled with a working fluid, and a second end portion that is located on the opposite side of the first end portion and contacts a radiator. Formed between,
The at least one wick structure is disposed in the chamber extending along the chamber from the first end to the second end, and at least guides a working fluid into the chamber. A structure of a thin plate type heat pipe, characterized in that one passage is defined.   The chamber includes a first side wall, a second side wall facing the first side wall, a third side wall, and a fourth side wall facing the third side wall, The thin plate heat pipe structure according to claim 1, wherein the chamber is filled with a working fluid.   The wick structure includes a first side surface, a second side surface opposite to the first side surface, a third side surface, and a fourth side surface opposite to the third side surface. The first side surface and the second side surface are in contact with the first side wall and the second side wall, respectively, and the first side surface and the second side surface are between the third side surface and the third side wall. The thin-film heat pipe structure according to claim 2, wherein a second passage is defined between the fourth side surface and the fourth side wall.   At least one extension portion is provided at one end portion of the wick structure, and the extension portion is provided at a position adjacent to the first end portion, and a side edge of the one end portion of the wick structure. The structure of the thin plate type heat pipe according to claim 1, wherein the structure projects in the direction of the corresponding passage.   At least one extension part is provided at one end of the wick structure, the extension part is provided at a position adjacent to the first end part, and the extension part includes the third side surface and the third side surface. The structure of the thin plate type heat pipe according to claim 3, characterized in that it is configured to project from the fourth side in the direction of the corresponding first passage and second passage. The wick structure includes a first wick structure, a second wick structure, and a third wick structure. Between the first wick structure and the opposed third side wall, a first wick structure is provided. And a second passage and a third passage are defined between the first wick structure, the second wick structure, and the third wick structure, respectively, The structure of the thin plate type heat pipe according to claim 2, wherein a fourth passage is defined between the third wick structure and the fourth side wall facing each other. The wick structure further includes a fourth wick structure, and the fourth wick structure is provided between the third wick structure and the fourth side wall. The structure of the thin plate type heat pipe according to claim 6, wherein four passages and a fifth passage are defined. The thin plate type heat pipe according to claim 7, wherein the first wick structure, the second wick structure, the third wick structure, and the fourth wick structure are provided at intervals. Structure. One end of the first wick structure, the second wick structure, and the third wick structure has at least one extension, and the extension is adjacent to the first end. Each of the expansion portions is configured to protrude from one end of the first wick structure, the second wick structure, and the third wick structure toward the corresponding passages on both sides. The structure of the thin plate type heat pipe according to claim 6, wherein: The wick structure includes a first wick structure and a second wick structure facing the first wick structure, and the first wick structure is adjacent to the third side wall. The second wick structure is provided at a position adjacent to the fourth side wall, and the first wick structure and the second wick structure define a passage with the chamber. The structure of the thin plate type heat pipe according to claim 2. One end of the first wick structure has a first extension, and the first extension is provided at a position adjacent to the first end, and the direction of the corresponding passageway. The structure of the thin plate type heat pipe according to claim 10, wherein the thin plate type heat pipe is structured so as to project. One end of the second wick structure has a second extension, and the second extension is provided at a position adjacent to the first end, and the first extension The structure of the thin plate type heat pipe according to claim 11, wherein the structure is configured to protrude in a direction facing the portion. The structure of the thin plate type heat pipe according to claim 1, wherein the wick structure is a powder sintered body. 2. The structure of a thin plate heat pipe according to claim 1, wherein the wick structure is a flat metal body, and a wick structure is formed on the metal body.   The structure of the thin plate type heat pipe according to claim 14, wherein the wick structure includes a mesh, a fiber, a powder sintered body, a combination of a mesh and a powder sintered body, or a minute groove. The structure of the thin plate type heat pipe according to claim 1, wherein the wick structure is a flat metal body, and a powder sintered body ring is fitted on an outer edge of the metal body. The at least one heat generating element is affixed to one end portion of the main body, and at least one heat radiator is opposedly connected to the other end portion of the main body. Thin plate type heat pipe structure. The main body includes a first flat plate and a second flat plate opposed to the first flat plate, and a wick structure is provided inside the first flat plate and the second flat plate. The structure of the thin plate type heat pipe according to claim 3, wherein: A space is formed between the other end portion of the wick structure and the second end portion, and the space communicates with the first passage and the second passage. The structure of the thin plate type heat pipe according to claim 18.   The structure of a thin plate type heat pipe according to claim 14 or 16, wherein the metal body is made of aluminum, copper, silver or an alloy.

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