JP2000222070A - Information device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the contact area between a condenser and a radiation body and to ensure the effective radiation by placing the condenser to cover the radiation body. SOLUTION: A cylindrical evaporator 1 is fixed at a display part 20 and its center axis line is set on the same line as a center axis line 35 of an engagement axis 34 set between the part 20 and a main body 23. One of both ends of a heat conduction member 36 covers around the evaporator 1 and also has a round pipe shape to be relatively revolved in the circumferential direction of the evaporator 1. The other end of the member 36 touches the surface of a heating body 24 and transmits the heat. A condenser has two passages 9a to flow the operating fluids, and every passage 9a covers a radiation shield 22 and uses a loop-shaped heat pipe having a smooth inner wall. Thus, the passage 9a can increase the bending frequency and accordingly increases the contact area to the shield 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information device having a heat pipe capable of easily releasing heat generated by a heating element to the outside.

[0002]

2. Description of the Related Art A conventional heat radiation method for portable information equipment is disclosed in Japanese Patent Application Laid-Open No. 9-6481. The conventional portable information device described in this publication is
As shown in FIG. 11, a heat pipe 21 and a radiator plate 22 are incorporated in a display unit 20 having a built-in liquid crystal panel 19. The heat is released from the heat sink via the heat pipe 21. However, the heat pipe 21 shown here is not a loop type heat pipe, but is currently used for general purposes. That is, as shown in the axial sectional view of FIG. 12 and the axial perpendicular sectional view of FIG.
Is enclosed. When one of the sealed pipes 27 is heated, the liquid of the working fluid 29 receives heat and turns into steam. The vapor of the working fluid 29 flows through the space surrounded by the wick 28 with an arrow 3
It moves in the direction 1 and condenses at the other end 32 of the sealed pipe 27 to release heat and liquefy. Thereafter, the liquid of the working fluid 29 moves in the direction of the arrow 33 due to the capillary pressure of the wick 28 inside the wick 28, and returns to one side 30 of the sealed pipe 27. This is repeated, and heat is applied to one side of the closed pipe 27.
Move from 0 to the other 32.

As a heat pipe not used for portable information equipment, there is a loop type heat pipe disclosed in Japanese Patent Application No. 9-53169. FIG. 14 is a view showing a cross section parallel to the axial direction of the evaporator of the loop heat pipe, and FIG. 15 is a view showing a cross section perpendicular to the axial direction. In the figure, reference numeral 1 denotes an evaporator, which is composed of a wick 2 made of a porous material having a pore size of 0.1 to 1 μm and a porous material having a larger pore size than the wick 2 provided adjacent to the inner wall surface of the wick 2. The wick 3 includes an evaporator container 5 having a groove 4 on the inner wall surface, a vapor flow path 6 formed between the wick 2 and the groove 4 of the evaporator container 5, and a liquid reservoir 7. 8
Is a steam pipe, 9 is a condenser, 10 is a liquid pipe, and the steam pipe 8, the condenser 9 and the liquid pipe 10 use pipes having smooth inner walls,
These have a one-loop circulation pipe structure. 11
Is an arrow indicating the flow of applied heat, 12 is a working fluid 13
Is an arrow indicating a flow of heat radiated from the condenser, and 15 is an arrow indicating a flow of a condensed liquid of the working fluid 13. Reference numeral 16 denotes a vapor passage 6 and a liquid reservoir 7
This is a seal body for sealing the seal.

The operation of the loop heat pipe constructed as described above is as follows. As shown by the arrow 11 indicating the flow of heat, the heat applied to the evaporator 1 is transmitted to the evaporator container 5, and contacts the wick 2 at the contact portion 17 between the wick 2 and the groove 4 of the evaporator container 5. Heat is transferred to the liquid of the working fluid 13 that has permeated, and the liquid of the working fluid 13 evaporates. Working fluid 1
The steam of 3 flows into the condenser 9 through the steam channel 6 and the steam pipe 8 in the direction of arrow 12. The vapor of the working fluid 13 flowing into the condenser 9 releases heat in the direction of the arrow 14 and is liquefied.
The condensed liquid of the working fluid 13 flows in the direction of the arrow 15 into the liquid pipe 10.
And returns to the evaporator 1. Working fluid 13 returned to evaporator 1
Is stored in the liquid reservoir 7. The liquid of the working fluid 13 accumulated at the bottom of the liquid reservoir 7 flows in the wick 3 in the circumferential direction in the direction of the arrow 18, and thereafter permeates the entire wick 2. Then, the liquid of the working fluid 13 is heated again at the contact portion 17 between the wick 2 and the groove 4 of the evaporator container 5 and evaporates. By repeating the above cycle, heat is transferred from the evaporator 1 to the condenser 9.

[0005]

In the conventional example, as described above, only portable information devices using general-purpose heat pipes are presented, so the following problems exist.
Due to the structure of the heat pipe, a wick for working fluid recirculation must be provided on the entire inner surface of the circumference of one pipe, so if the number of bending of the pipe is increased, the degree of deformation of the wick itself increases, and the recirculation of the working fluid increases. Reliability may be reduced. On the other hand, in order to improve the portability of a portable information device, it is necessary to make the display section containing the liquid crystal panel as thin as possible. Therefore, the heat sink must be thin. Further, since the heat pipe has the above-described structural restrictions, the number of times of bending on the heat sink cannot be increased, and the contact area between the heat pipe and the heat sink cannot be increased. Therefore, in the portable information device, it is difficult to conduct the heat sent from the heat pipe to the entire surface of the radiator plate because the heat conduction in the surface direction of the radiator plate is not sufficient. As a result, of the portions of the heat sink, only the portion near the heat pipe could contribute to heat dissipation, and the heat dissipation effect was not sufficient.

A conventional loop-type heat pipe is configured as described above, and can transport heat in principle, but is not specialized for portable information equipment. Therefore, it is necessary to clarify the structure and specific installation method of the loop heat pipe specialized for portable information equipment.

Therefore, an object of the present invention is to clarify the form of a loop heat pipe suitable for a portable information device and to solve the above-mentioned problems.

[0008]

The information device according to the present invention has the following features. (1) In an information device having a heating element and a radiator, an evaporator that receives heat generated by the heating element, a condenser that radiates the heat using the radiator, the evaporator, and the condenser A heat pipe having a vapor pipe and a liquid pipe connected to the condenser, wherein the condenser is disposed so as to cover the radiator, and the evaporator, the vapor pipe, the condenser, and the liquid pipe It is characterized in that the working fluid circulates. (2) The condenser has a flow path for allowing the working fluid to flow on the radiator, and the condenser has a plurality of the flow paths. (3) The information device is characterized in that another heat pipe is attached to the condenser. (4) The information device is an information device having a main body having a heat generator and a display having a heat radiator. (5) The condenser has a flat cross section. (6) The condenser has a radiation fin on an inner wall surface of the condenser. (7) In the information device, the main body portion and the display portion are engaged via an engagement shaft, and the heat generated by the heating element in contact with the heating element and the evaporator is transmitted to the evaporator. A heat conductive member that transfers heat, wherein the evaporator and the heat conductive member are fitted on the engagement shaft, and the evaporator and the heat conductor rotate relative to each other in a circumferential direction of the engagement shaft. It is characterized by the following. (8) The information device is characterized in that a part of the steam pipe and the liquid pipe are arranged on the engagement shaft. (9) The information device is characterized in that the vapor pipe and the liquid pipe are connected to an evaporator with a margin. (10) The information device is characterized in that at least one of the main unit and the display unit is provided with a guide unit for ensuring a curvature of the vapor pipe and the liquid pipe.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a portable information device will be described below as an example of the present invention with reference to the accompanying drawings.

Embodiment 1 FIG. 1 is a perspective view of a first embodiment in which a loop-type heat pipe according to the present invention is mounted on a portable information device, and the inside is cut away for easy understanding. 1, 8, 10, 19, 20, 22, 23, 2,
Reference numeral 4 is the same as the above-mentioned conventional example. The evaporator 1 has a cylindrical shape and is fixed to the display unit 20 side, and its axial center line is on the same line as the central axis 35 of the engagement shaft 34 of the display unit 20 and the main body 23. Reference numeral 36 denotes a heat conducting member, one end of which covers the periphery of the cylindrical evaporator 1 and has a circular shape so as to rotate relative to the evaporator 1 in the circumferential direction. In contact, heat is transferred.
The heat conducting member 36 is fixed to the main body 23.
Further, in the present embodiment, two passages 9a which are a part of the condenser and through which the working fluid flows are provided, and each passage is provided with a heat sink 2
2 are arranged so as to cover the upper part. In addition, the flow path means the pipe itself through which the working fluid flows, and the condenser means a set of each flow path when there are a plurality of flow paths, and the condenser is the flow path itself when there is a single flow path. Means Since each flow path uses a pipe having a smooth inner wall, the number of times of bending can be increased, and the contact area with the heat sink can be increased. Further, in the first to tenth embodiments, the loop heat pipe having the evaporator shown in Japanese Patent Application No. 9-53169 is assumed, but the loop having the condenser using the pipe having a smooth inner wall is assumed. The structure of the evaporator is not limited as long as it is a heat pipe. Here, the term “coverage” means that the contact area between the condenser and the heat sink is 50% or more of the area in front of the heat sink.

[0011] Since the loop heat pipe is configured as described above inside the portable information device, a large contact area between the radiator plate and the condenser can be obtained. In other words, the working fluid vaporized by the evaporator of the loop heat pipe circulates on the surface of the radiator plate, so that the temperature distribution of each part of the radiator plate is uniform. As a result, the heat generated by the heating element is dispersed by the condenser over the entire surface of the radiator plate, and is efficiently released to the outside from the entire surface of the radiator plate. The evaporator extends on an engagement axis between the main body and the display unit, and the heat conduction member that transfers heat of the heating element to the evaporator and the evaporator relatively rotate in the circumferential direction on the engagement axis. Even if the display unit is opened and closed, only the heat conduction member and the evaporator rotate relatively, and the steam pipe, the liquid pipe, and the condenser do not bend. As a result, the durability of the steam pipe and the liquid pipe is improved.

Embodiment 2 FIG. FIG. 2 is a perspective view showing a second embodiment in which the condenser has a plurality of flow paths as in the first embodiment. 1, 8, 10, 19, 20, 22, 22,
23, 24, 34, 35 and 36 are the same as those in the first embodiment. In the present embodiment, the flow path 9a that is a part of the condenser and allows the working fluid to flow is disposed in the horizontal direction and the vertical direction, and the horizontal flow path is configured so that heat is uniformly transmitted to the heat radiation plate 22. A plurality are arranged in parallel. Since the loop heat pipe is configured as described above inside the portable information device, a large contact area between the heat sink and the condenser can be obtained. In other words, the working fluid vaporized by the evaporator of the loop heat pipe circulates on the surface of the radiator plate, so that the temperature distribution of each part of the radiator plate is uniform. As a result, the heat generated by the heating element is dispersed by the condenser over the entire surface of the radiator plate, and is efficiently released to the outside from the entire surface of the radiator plate.

Embodiment 3 FIG. 3 shows a third embodiment in which a heat pipe having a conventional structure is attached to a condenser of a loop heat pipe. 1, 9, 19, 20, 22,
23, 24, 34, 35 and 36 are the same as those in the first embodiment. In the present embodiment, the heat receiving side of the rod heat pipe 21 of the conventional structure is attached to the condenser 9 of the loop heat pipe (however, the inside of the condenser and the heat pipe of the conventional structure is not connected. It is merely an external contact fixation). A plurality of heat pipes 21 having a conventional structure are arranged over the entire surface of the heat radiating plate 22 so that heat is uniformly transmitted to the heat radiating plate 22. The heat generated by the heating element 24 is transferred from the condenser 9 of the loop type heat pipe to the heat pipe 21 of the conventional structure.
To the entire heat sink through the heat sink of the conventional heat pipe. As described above, by using the loop heat pipe, a plurality of heat pipes having a conventional structure can be connected, and the contact area between the heat pipe and the radiator plate can be increased.

Embodiment 4 FIG. 4A is a perspective view showing a fourth embodiment in which a roll-bond type heat pipe is attached to a condenser of a loop-type heat pipe, and FIG. 4B is a roll bond according to the present embodiment. It is sectional drawing of a type heat pipe. 1, 9, 19, 2 in the figure
0, 22, 23, 24, 34, 35, and 36 are the same as those in the first embodiment. Note that a roll-bond type heat pipe transfers heat by repeating evaporation and condensation of a working fluid, and is characterized in that the working fluid is recirculated using the gravity of the earth. In the present embodiment, the heat receiving side of the roll bond type heat pipe 45 is attached to the condenser 9 of the loop type heat pipe (however,
The interior of the condenser and the roll bond type heat pipe are not connected internally, but are simply connected and fixed externally.) The roll bond type heat pipe 45 is attached to the heat sink 22. The heat generated by the heating element 24 is transmitted from the condenser 9 of the loop-type heat pipe to the heat-receiving side of the roll-bond type heat pipe 45, and is distributed over the entire radiator plate by circulation of the working fluid 13 in the roll-bond type heat pipe. .

Embodiment 5 FIG. 5 shows a cross section of the condenser of the loop heat pipe according to the present embodiment. In the present embodiment, the radiation fins 46 are provided on the inner wall surface of the condenser 9. The heat radiation fins 46 are intended to increase the surface area of the inner wall surface of the condenser 9 and to more efficiently conduct the heat reaching the condenser to the outer wall surface of the condenser and the radiator plate 22. Further, since the condenser uses a pipe having a smooth inner wall, there is no problem even if the radiation fins 46 are crushed. Therefore, it is possible to increase the number of bending times of the condenser and increase the contact area with the heat sink.

Embodiment 6 FIG. 6 shows a cross section of the condenser of the loop heat pipe according to the present embodiment. In the present embodiment, the condenser has a flat cross section. By making the condenser flat, the heat sink 22
And the heat reaching the condenser can be more efficiently conducted to the radiator plate.

Embodiment 7 FIG. 7 is a perspective view showing the present embodiment, in which the inside is cut away for easy understanding. 1, 8, 9, 10, 19, 20, 22, 23, 2
4, 25, 34, and 35 are the same as those in the first embodiment. The reason why the outer shape of the evaporator 1 is a rectangular parallelepiped is to improve the thermal contact with the heat receiving plate 25. Here, the axis of the part 8a of the steam pipe 8 and the part 10a of the liquid pipe 10 are collinear with the central axis 35 of the engagement shaft 34. Reference numeral 37 denotes the display unit 2 for displaying a portion 8a of the steam pipe 8 and a
This is a fixing member for fixing to zero. 38 is a part 8 of the steam pipe 8
a is a fixing member for fixing a to the main body 23. 39 is the liquid tube 1
This is a fixing member for fixing a part 10 a of the “0” to the main body 23.
As can be seen from the figure, the fixing members 37 to 39 fix only the vicinity of both ends of the part 8a of the steam pipe 8 and the part 10a of the liquid pipe 10, respectively. Therefore, when the display unit 20 is opened and closed, the center axis 35 of the engagement shaft 34 is used as a fulcrum to support the display unit 20.
Rotates. Then, a part 8a of the steam pipe 8 and a part 1 of the liquid pipe 10 whose axes are collinear with the central axis 35 of the engagement shaft 34
0a is twisted in the direction of arrow 40. That is, since a part of the vapor pipe and a part of the liquid pipe extend on the axis of engagement between the main body and the display part, even if the display part is opened and closed, the part extending in parallel is in the circumferential direction. However, the liquid pipe itself does not bend. As a result, the durability of the steam pipe liquid pipe is improved.

Embodiment 8 FIG. 8 shows an eighth embodiment obtained by developing the seventh embodiment. 1, 8,
9, 10, 19, 20, 22, 23, 24, 25, 3,
Reference numerals 4 and 35 are the same as those in the first embodiment. 37
Is the same as in the seventh embodiment. In this case, a part 8a of the steam pipe 8 and a part 10a of the liquid pipe 10 are fixed to the display unit 20 by the fixing member 37, and a margin is provided for the liquid pipe 10 near the engagement shaft 34. Lengths 8b and 10b are taken. Since the steam pipe and a part of the liquid pipe are fixed, and the steam pipe liquid pipe near the engagement shaft has extra length, even if the display unit is opened and closed, the extra length of the vapor pipe liquid pipe Since the part absorbs the twist of the pipe, the collapse of the steam pipe liquid pipe itself can be prevented. As a result, the durability of the steam pipe liquid pipe is improved.

Embodiment 9 9A and 9B are side sectional views of the ninth embodiment, in which FIG. 9A shows a state where the display unit is opened, and FIG. 1, 8, 9, 10, 19, 20, 2
2, 23, 24, 25, and 34 are the same as those in the first embodiment. The reason why the outer shape of the evaporator 1 is a rectangular parallelepiped is to improve the thermal contact with the heat receiving plate 25.
Reference numeral 41 denotes a guide section for securing the curvature of the vapor pipe 8 and the liquid pipe 10, and is attached to the main body 23 and the display section 20, or to one of them. At least one of the main body and the display section is provided with a guide section 41 for securing the curvature of the vapor pipe liquid pipe, so that when the display section is closed, the vapor pipe liquid pipe moves along the guide section 41 to a predetermined position. Bend while maintaining curvature. As a result, the durability of the steam pipe liquid pipe is improved.

Embodiment 10 FIG. FIG. 10 shows a tenth embodiment.
FIG. 1 is a perspective view of a mobile phone, which is a typical example. In the figure, 1, 8, 9, 10, and 24 are the same as those in the above embodiment. 42 is a main body, 43 is an electronic circuit board mounted in the main body 42, 44 is an antenna, and the heating element 24 and the antenna 44 are installed on the electronic circuit board 43. The antenna 44 penetrates the main body 42 from above the electronic circuit board 43 and is exposed to the outside. This portion is 44a. The condenser 9 is wound around the antenna 44 inside the main body 42.

The heat generated by the heating element 24 in the main body 42 is transmitted to the evaporator 1 and transported to the condenser 9 via the steam pipe 8 together with the working fluid. The heat from the condenser 9 is transferred to the antenna 4
4 and is radiated to the surrounding air from the exposed portion 44a to the outside. The liquid of the working fluid is returned from the condenser 9 to the evaporator 1 through the liquid pipe 10. That is, the condenser 9 is connected to the antenna 4
By wrapping around the antenna 4, heat generated by the heating element can be radiated from the antenna to the surrounding air, so that heating of the main body can be prevented. This can prevent the heating of the part held by the hand in the mobile phone.

As described above, the present invention has the following main features. (1) In a portable information device having a main body in which a heating element is incorporated and a display unit having a liquid crystal panel provided on an inner surface, evaporation provided in the main body and receiving heat generated by the heating element. And a radiator plate provided on the display unit and radiating heat generated by the heating element to the outside, wherein the radiator plate is provided with a condenser covering the radiator plate, and One end of a vapor pipe and one end of a liquid pipe are connected to both ends of the condenser, respectively, and the other end of the vapor pipe liquid pipe is connected to the evaporator, whereby the evaporator passes through the vapor pipe, the condenser, and the liquid pipe. It is characterized by having a loop-shaped heat pipe having a circulation pipe structure returning to the evaporator again. Further, the evaporator has a container in which a groove is formed on an inner peripheral wall, a wick provided so as to be in close contact with a groove in the container, and the wick as an inner wall surface, and is connected to the liquid pipe. A liquid space, and a steam space that spatially connects the groove and the steam pipe,
Preferably, the wick is formed from at least two wicks having different hole diameters, or is formed by changing the hole diameter, and the working fluid is sealed therein. (2) In addition, the evaporator extends on an engagement shaft between the main body and the display unit, and a heat conductive member that transfers heat of a heating element to the evaporator; It is characterized in that it is engaged so as to relatively rotate in the circumferential direction on the joint axis. (3) A part of the steam pipe liquid pipe extends on an engagement axis between the main body and the display section. (4) The steam pipe liquid pipe in the vicinity of the engagement shaft between the main body section and the display section has an extra length. (5) At least one of the main unit and the display unit includes:
It is characterized in that a guide part for securing the curvature of the liquid pipe of the steam pipe is provided. (6) In a portable information device having a main body in which a heating element is incorporated and an antenna in the main body, an evaporator is provided in the main body and receives heat generated by the heating element, and is attached to the antenna. A condenser is provided, and one end of a steam pipe and one end of a liquid pipe are connected to both ends of the condenser, respectively, and the other end of the liquid pipe of the steam pipe is connected to the evaporator. It has a loop-type heat pipe having a circulation pipe structure that returns to the evaporator again through the liquid pipe.

[0023]

According to the present invention, by arranging the condenser over the entire surface of the radiator, the contact area between the condenser and the radiator can be increased, and effective radiation using the entire radiator can be achieved. It becomes possible. As a result, in the portable information device, it is possible to reduce the thickness of the display unit on which the heat sink is arranged.

By arranging a plurality of flow passages of the condenser or attaching another heat pipe to the flow passage of the condenser, a more effective heat radiation effect can be realized.

Further, by making the cross section of the condenser flat, or by providing a radiation fin on the inner wall surface of the condenser, the heat conductivity from the condenser to the radiator can be increased, and the radiation effect can be enhanced. it can.

Further, in the case of portable information equipment applications, conventionally, a steam pipe connected to a condenser by opening and closing a display unit,
Although there was a problem that the liquid pipe was twisted, the present invention can prevent the steam pipe and the liquid pipe from being twisted and improve the durability of the steam pipe and the liquid pipe.

Further, by using the heat pipe according to the present invention for a mobile phone, the heat generated by the heating element can be radiated from the antenna, and the heating of the main body of the mobile phone can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a mounting structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of a mounting structure showing one embodiment of the present invention.

FIG. 3 is a perspective view of a mounting structure showing one embodiment of the present invention.

FIGS. 4A and 4B are a perspective view of a mounting structure and a cross-sectional view of a display unit according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view of a condenser having a radiation fin.

FIG. 6 is a sectional view of a condenser having a flat shape.

FIG. 7 is a perspective view of a mounting structure showing one embodiment of the present invention.

FIG. 8 is a perspective view of a mounting structure showing one embodiment of the present invention.

FIG. 9 is a sectional view of a mounting structure showing one embodiment of the present invention.

FIG. 10 is a perspective view of a mounting structure showing one embodiment of the present invention.

FIG. 11 is a conventional heat dissipation structure diagram.

FIG. 12 is an axial sectional view of a conventional heat pipe.

FIG. 13 is a cross-sectional view in a direction perpendicular to the axis of a conventional heat pipe.

FIG. 14 is an axial cross-sectional view of a conventional loop-type heat pipe evaporator.

FIG. 15 is a vertical cross-sectional view of a conventional loop-type heat pipe evaporator.

[Explanation of symbols]

1 evaporator, 8 steam pipe, 8a part of steam pipe, 8b
Extra length of steam pipe, 9 condenser, 9a Condenser flow path, 1
0 liquid pipe, 10a part of liquid pipe, 10b extra length of liquid pipe, 13 working fluid, 19 liquid crystal panel, 20 display unit, 21 heat pipe of conventional structure, 22 heat sink, 2
3 main body, 24 heating elements, 34 engaging shafts, 36 heat conducting members, 41 guide portions, 42 main bodies, 44 antennas,
45 Roll bond type heat pipe, 46 radiating fins.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06F 1/00 360A (72) Inventor Takashi Kobayashi 2-3-2 Marunouchi 2-chome, Chiyoda-ku, Tokyo Association In-house F-term (reference) 5J046 AA00 AB06 5K023 AA07 BB00 RR00

Claims (11)

[Claims] An information device having a heating element and a radiator, wherein the evaporator receives heat generated by the heating element, a condenser that radiates the heat using the radiator, the evaporator, A heat pipe having a vapor pipe and a liquid pipe connected to the condenser, wherein the condenser is disposed so as to cover a radiator, and the evaporator, the vapor pipe, the condenser, and the liquid An information device characterized in that a working fluid flows through a pipe. 2. The condenser according to claim 1, wherein the condenser has a flow path through which the working fluid flows on the radiator, and the condenser has a plurality of the flow paths. Information equipment. 3. The information device according to claim 1, wherein the information device has another heat pipe attached to the condenser. 4. The information device according to claim 1, wherein the information device is an information device having a main body having a heat generator and a display having a heat radiator. 5. The information device according to claim 1, wherein the condenser has a flat cross section. 6. The information device according to claim 1, wherein the condenser has a radiation fin on an inner wall surface of the condenser. 7. The information device, wherein the main body portion and the display portion are engaged via an engagement shaft, and the heat generated by the heating element is brought into contact with the heating element and the evaporator. A heat conducting member that transfers heat to the vessel, wherein the evaporator and the heat conducting member are fitted on the engagement shaft, and the evaporator and the heat conductor are mutually connected in a circumferential direction of the engagement shaft. The information device according to claim 4, wherein the information device rotates. 8. The information device, wherein the main body portion and the display portion are engaged via an engagement shaft, and a part of the steam pipe and the liquid tube is disposed on the engagement shaft. The information device according to claim 4, wherein 9. The information device according to claim 4, wherein the information device has the vapor pipe and the liquid pipe connected to an evaporator with a margin. 10. The information device according to claim 1, wherein at least one of the main unit and the display unit is provided with a guide unit for securing a curvature of the vapor pipe and the liquid pipe. Item 4. The information device according to item 4. 11. An information device having a body in which a heating element is incorporated, an antenna in the body, an evaporator for receiving heat generated in the heating element, and a condenser for radiating the heat using the antenna. And a heat pipe having a vapor pipe and a liquid pipe connected to the evaporator and the condenser, wherein a working fluid flows through the evaporator, the vapor pipe, the condenser, and the liquid pipe. Information equipment characterized by the following.