JPH08328489A - Display elements and temperature control device for display equipment - Google Patents

Abstract

PURPOSE: To preheat the surface of display tubes up to the optimum temp. and also to cool printed circuit boards for controlling display operations of display tubes to make luminances of display tubes maximum. CONSTITUTION: When temp. sensors 3 detect that ambient temp.s of electric discharge tubes 1 being display tubes are lower than an optimum temp., display tubes are preheated until the surface temp.s of display tubes reach the optimum temp. by circulating air heated by heaters 2 such as panel heaters and so forth in a dust for circulation in display module 4 with circulation fans A12 in the direction of the arrow. At the point of time when the temp.s reach the optimum temp., display tubes are turned on and the heating by heaters 2 is stopped. Thereafter, when the temp.s are raised to a temp. higher than the optimum temp. by the heat generation by display tubes of their owns, the surface temp.s of display tubes is lowered by venting air of a high temp. in the duct 4 with ventillation fan in display module 13 and by intaking the outdoor air of a low temp. Besides, printed circuit boards for controls 5 are cooled by the outdoor air intaken by an air intaking fan in unit 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-sized display device outdoors or indoors, and more particularly to a display element for controlling the temperature of a display tube in a display element and a control unit for controlling the drive of the display tube, and a display apparatus. Temperature controller.

[0002]

2. Description of the Related Art Conventionally, display elements used for large-scale display devices outdoors and indoors are, for example, red,
Discharge tubes such as three cold cathode tubes that emit green or blue light are used.

As shown in FIG. 11, this discharge tube has a maximum brightness when the surface temperature is around 70 ° C. Therefore, for example, when the ambient temperature is a low temperature around 0 ° C to 10 ° C,
If the discharge tube that has not been lit for a long time is lit, not only sufficient brightness cannot be obtained, but also the life of the display tube is adversely affected. Further, after the display tube is turned on, if time elapses without cooling the display tube, the surface temperature of the display tube gradually rises due to heat generation of the display tube itself.
Luminance decreases at temperatures above 00 ° C.

Therefore, conventionally, in order to cool the display tube, an apparatus has been proposed which blows air to the display tube to cool the display tube.
On the other hand, it is necessary to constantly radiate or cool the ambient temperature of the printed circuit board for control that controls the display operation, which is provided near the display tube, so that the ambient temperature does not exceed the predetermined temperature.

[0005]

However, even if the conventional display device cooling method blows air to the display tube, it blows air to the lamp holder in which the display tube is housed to indirectly cool the display tube. is there. There is also a method of blowing air to a part of the display tube (for example, one electrode provided at one end of the display tube), but the display tube is not directly cooled. For this reason, not only cannot efficient cooling be performed, but also the display tube cannot be controlled to a predetermined temperature.

The conventional temperature control system only cools and heats the display tube and does not control the temperature of the printed circuit board on which the display control circuit and the like are arranged. Furthermore, even today, even with large-sized display devices, there is a strong demand for thinness,
In many devices, a control board that controls lighting of the display tube is arranged behind a holder that covers the display tube. In particular, when the control board closely contacts the back surface of the holder in parallel, it is required that the temperature control of the display tube and the temperature control of the control board be simultaneously performed as one unit. However, such a temperature control device and a temperature control system have not been proposed in the conventional temperature control device.

In view of the above conventional circumstances, the object of the present invention is to
When the surface temperature of the display tube is below the above optimum temperature, the display tube is preheated so that it becomes the optimum temperature before lighting the display tube, and after lighting, it is displayed by the heat generation of the display tube itself as described above. When the surface temperature of the tube exceeds the optimum temperature, cool the display tube so as to return it to the optimum temperature, and cool the printed circuit board of the control unit that controls the display operation of the display tube to a predetermined temperature or lower. To dissipate heat.

Further, in view of the above conventional circumstances, the object of the present invention is to control the temperature of the display tube even when the control board for controlling the drive of the display tube is in close contact with the display tube (to the holder of the display tube). And to provide a temperature control device for a display device capable of simultaneously controlling the temperature of a control board as a unit.

Further, in this case, in order to effectively control the temperature, a heat conducting member is provided on the display element, and the heat conducting member is brought into contact with a part of the housing to provide a display element which efficiently radiates heat. It is a thing.

[0010]

In order to solve the above problems, the present invention provides a display device using a display tube, wherein the surface temperature of the display tube is the optimum temperature for lighting the display tube before lighting the display tube. Display tube preheating means for preheating the display tube so that, and display tube cooling means for cooling the display tube in order to keep the surface temperature during lighting of the display tube at the optimum temperature,
And a controller cooling means for cooling the controller controlling the display operation of the display tube.

Further, the preheating of the display tube by the display tube preheating means is carried out, for example, by a heating means, a temperature detecting means, and a blowing means using a blower tube for circulating warm air of a predetermined temperature.

Further, the cooling of the control section by the control section cooling means is performed by, for example, the warm air of the predetermined temperature used in the display tube preheating means. With the above means, first, there is provided a display tube preheating means for preheating the surface temperature of the display tube to the optimum temperature for lighting the display tube before the lighting of the display tube. The same means uses, for example, a heating means using a panel heater, a temperature detecting means using a temperature sensor, and an air blowing means using a fan, to use an air blowing tube that circulates warm air of a predetermined temperature, and an optimum surface for maximizing the brightness of the display tube. To temperature,
It is a means of preheating the display tube before lighting.

Next, there is provided a display tube cooling means for cooling the display tube in order to keep the surface temperature during lighting of the display tube at an optimum temperature. When the temperature sensor detects that the surface temperature has exceeded the optimum temperature due to heat generation of the display tube itself after lighting the display tube, after stopping the heating of the heating means,
It is a means for exhausting the air of a predetermined temperature that was circulating in the blower pipe that was circulating the warm air of a predetermined temperature, and inhaling low-temperature outside air to cool the display tube until the surface temperature reaches the optimum temperature. .

And, it has a control unit cooling means for cooling the control unit for controlling the display operation of the display tube. The means is, for example, a means for cooling the printed circuit board of the control unit with the outside air sucked by a fan, or for radiating or cooling the printed circuit board with warm air of a predetermined temperature used for the display tube preheating means.

According to the present invention, there is provided a display device using a display tube, wherein the display tube and a control unit for controlling the display operation of the display tube are integrally formed on the rear portion of the display tube. It is possible to solve the problem by providing a temperature control device for a display device including a control unit and a blowing unit that sends hot air or cold air to the display / control unit to control the display / control unit to an optimum temperature.

The blower means sends the warm air heated by the heating means to the display / control section to heat the display / control section to a predetermined temperature. Further, the air blowing unit controls the display / control unit to a predetermined temperature by sending hot air heated by the display / control unit to the display / control unit again.

Further, the blower means cools the display / control unit and controls it to a predetermined temperature by sending outside air to the display / control unit, for example. Further, the air blowing unit controls the display / control unit to a predetermined temperature by sending the air that has passed through the display / control unit to the display / control unit again.

On the other hand, the display / control section has, for example, a duct communicating with the display tube and a duct communicating with the control section separately.
The air blown from the air blower is guided to each duct, so that the temperature of the display / control unit is integrally controlled by one air blower.

A heat conducting member, for example, is attached to the display tube of the display / control unit. The heat conducting member is made of rubber or metal having good heat conductivity. Further, the heat conducting member is configured such that one end thereof is attached near the electrode portion of the display tube and the other end thereof abuts a heat radiating member mechanically connected to the casing of the display device.

Further, the heat dissipation member is composed of, for example, a metal plate member. Further, the heat dissipation member is not limited to the above-mentioned metal plate-shaped member, for example, a metal rod-shaped member,
It may be a rubber plate member or rod member having good thermal conductivity.

According to the present invention, the above problems include a display tube, a heat conducting member attached to the display tube, and a heat radiating member which is mechanically connected to the casing of the apparatus body and abuts against the heat conducting member. The problem can be solved by using the display element provided.

The heat-conducting member is attached, for example, in the vicinity of the electrode portion of the display tube and is made of, for example, an elastic body.

[0023]

In the display device using the display tube, the temperature of the surface of the display tube is detected by the display tube preheating means so that the surface temperature of the display tube becomes the optimum temperature before lighting, for example, by the heating means such as a panel heater and the temperature sensor. The display tube is preheated by the air blower that circulates warm air of a predetermined temperature by the air blower and the air blower by the fan. Then, after the display tube is turned on, when the temperature sensor detects that the surface temperature exceeds the optimum temperature due to heat generation of the display tube itself, the display tube cooling means stops the heating means such as the panel heater. The air in the blower pipe, which circulates the warm air of a predetermined temperature, is exhausted, and the low temperature outside air sucked in cools the display pipe until its surface temperature reaches an optimum temperature.

On the other hand, a printed circuit board of a control unit for controlling the display operation of the display tube, for example, a component on which a component that generates a considerably high temperature is mounted is sucked by the control unit cooling means by a fan provided in the temperature control device. Is it cooled by outside air,
Alternatively, the heat is dissipated or cooled by the warm air of a predetermined temperature used for the display tube preheating means.

The present invention can be applied to a display device having a structure in which a control unit for controlling the display operation of the display tube is integrally attached to the display tube or on the back surface of the holder that covers the display tube. It is possible to control the optimum temperature by sending cold air or warm air sent from the display / control unit. For example, by sending cold air or hot air to the duct guided to the display tube (tube end of the display tube) and the duct guided to the control board on which the circuit element is disposed, the display / control unit can be integrated. The temperature can be controlled to the optimum state.

For example, the temperature of the display tube and the control board is set to a predetermined temperature (for example, 70 ° C.) when the display device starts to operate.
When the temperature is lower than C), the warm air heated by a heating means such as a heater is sent to the above duct to heat the display / control unit to a predetermined temperature, and the display device is driven at a temperature close to the predetermined temperature as when the display device is operating. During this, for example, the hot air heated by the display / control unit is sent again to the display / control unit to control the display / control unit to a predetermined temperature.

Further, when the temperature of the display / control unit greatly exceeds the predetermined temperature, for example, outside air is sent to the display / control unit to be cooled, and when the temperature of the display / control unit is near the predetermined temperature, the display / control is performed. The temperature of the display / control unit is controlled by sending the air that has passed through the unit to the display / control unit again. By controlling in this way, the display tube and the control unit are always controlled to the optimum temperature, and the display tube can emit light with high brightness.

The temperature of the display tube can be controlled by attaching rubber or metal having good heat conductivity to the display tube of the display / control unit as a heat conducting member. That is,
It is possible to easily control the temperature of the display tube through the heat conducting member by attaching the above-mentioned rubber or metal to the vicinity of the electrode part of the display tube and heating or cooling the other end with the above-mentioned blower. it can.

Furthermore, by bringing the heat conducting member into contact with a part of the housing of the apparatus body such as a metal plate-like member, the heat generation of the display tube is radiated to the housing side, and the temperature connection of the display tube is more efficient. Can be done easily.

[0030]

Next, three embodiments to which the present invention is applied will be described with reference to the drawings. The first embodiment described below is a system in which the temperature control system of each of the display tube unit that needs to be preheated and the control unit that needs to be cooled is an independent system. In the second embodiment, the preheating of the display unit and the cooling of the control unit are performed by ventilation of the same system.

Further, in the third embodiment, a display device having a structure in which a control board for controlling the display operation of the display tube is mounted near the rear surface of the holder of the display tube is blown from the blowing means to control the temperature. It is a thing. <First Embodiment> FIG. 1 is an overall configuration diagram of a display device according to the first embodiment. In this display device, 4 × 8 display modules described below are stacked in four stages as one unit. In addition, a lamp section mainly including a display tube is provided at the front of the unit, and a control section for controlling the display operation of the display tube is provided at the rear of the unit, as shown in FIG. It is provided sandwiching. In addition, the large display device described above,
A required number of such units are arranged.

Next, FIG. 2 is an external view (front view) of a display module having four vertical display stages and eight horizontal display devices, that is, 32 (4 × 8) display elements, and a sectional view showing the internal structure. FIG. 4 shows an external view of the structure of one display element used in the display section of a large-sized display device (see FIG.
(A) is a perspective view of the display element, (b) is a side view of the display element, and (c) is a front view of the display element).

This display element comprises two partition plates that divide the lamp house that houses each of the constituent members into three equal parts, and a total of three partition plates, one of which is arranged at the center of each room divided into these three parts. The discharge tube 1 is a straight tube type display tube, and a lamp house 10 that efficiently reflects the light diffusely emitted from the side surface of the display tube forward.

The above three discharge tubes 1 are coated with red (R), green (G) and blue (B) fluorescent light emitting agents, respectively, and are arranged with their longitudinal directions facing the front and rear direction of the housing. . Next, the temperature control of the display device will be described with reference to FIG.

First, the lamp portion is A- in FIG. 1 and FIG.
As shown in FIG. 3 which is a sectional view taken along the line A ′, it comprises a discharge tube 1 of a display tube, a heater 2 such as a panel heater, a temperature sensor 3, and a duct 4 for circulation in the display module having a circulation fan A 12 in the display module. .

When the temperature sensor 3 detects that the ambient temperature of the display tube is equal to or lower than the optimum temperature (hereinafter referred to as the optimum temperature) at which the brightness of the display tube is maximized, the heater 2 heats the display tube. The air thus drawn is circulated in the display module circulation duct 4 to the display module circulation fan A.
The discharge tube 1 of the display tube 1 is circulated in the direction of the arrow by 12
Is preheated to the optimum temperature, for example, 70 ° C. at which the emission brightness reaches the maximum, as described above, after reaching the optimum temperature, the display tube is turned on, and heating of the heater 2 for preheating is stopped. If the surface temperature further rises above the optimum temperature due to heat generation of the display tube itself, the display module exhaust fan B13 causes the display module internal circulation duct 4
This is a structure in which the high temperature air is exhausted and the low temperature outside air is sucked in to lower the surface temperature of the display tube.

Thus, the surface temperature of the discharge tube 1 of the display tube is controlled by the temperature sensor 3, the heater 2, the circulation fan A12 in the display module, the exhaust fan B13 in the display module, and the circulation duct 4 in the display module. In order to maximize the emission brightness, the temperature is controlled so as to keep the temperature near the optimum temperature.

On the other hand, the control printed circuit board 5 of the control unit of FIG. 1 is cooled by the outside air taken in by the in-unit intake fan C14. By controlling in this way, the display tube can be set to the optimum temperature, and the discharge tube 1 can efficiently emit light. Also, the control printed circuit board 5 can be used at the optimum temperature, and the temperature control of both the display tube and the control printed circuit board 5 can be efficiently performed. <Second Embodiment> FIG. 5 is a top view and a side sectional view of a display module used in the second embodiment. Incidentally, FIG. 7A shows a top view, and FIG. 7B shows a side sectional view.

In the figure, first, when the temperature sensor 3 in the lamp house 10 detects that the ambient temperature of the display tube is equal to or lower than the optimum temperature at which the brightness of the display tube is maximum, the temperature sensor 3 is provided at the rear of the unit. By the intake / exhaust fan 6, the air outside the unit is taken in through the intake / exhaust port 8 and taken into the chamber 11.

At that time, the sucked air is heated by the heater 7 and circulated in the display module along a total of 16 ventilation ducts 9 on both sides, and a discharge tube in the lamp house 10 of the display module. Preheat 1 efficiently.

After that, the surface temperature of the display tube reaches the optimum temperature for lighting the display tube, the display tube is turned on, and the heating of the heater 7 for preheating is stopped. When the temperature sensor 3 detects that the temperature is higher than the optimum temperature of the display tube, the intake / exhaust fan 6 sucks and exhausts the air outside and inside the display module to lower the internal temperature.

In this way, the surface temperature of the discharge tube of the display tube is close to the optimum temperature for maximizing the light emission brightness by the temperature sensor 3, the heater 7, and the intake / exhaust fan 6 and the ventilation duct 9. Controlled to keep.

The hot air that has passed through the lamp house 10 absorbs the heat of the control printed circuit board 5 and advances as intake air of the intake / exhaust fan 6 in the direction of the arrow shown in FIG. It

In this case, the warm air that has passed through the lamp house 10 has a relatively low temperature as compared with the control printed circuit board on which the components that rise to a considerably high temperature are mounted. Can be cooled.

Even with this structure, the display tube can be set to the optimum temperature, and at the same time, the control printed circuit board 5 can be used at the optimum temperature. Control can be performed efficiently. <Third Embodiment> FIG. 6 is a side sectional view of a display device according to a third embodiment of the present invention. In the figure, the display unit 20 is composed of, for example, a total of 32 display modules 21 arranged in four rows vertically and eight columns horizontally. The entire display device is configured by arranging a large number of the display units 20 having the above-mentioned configuration vertically and horizontally.

On the back surface of the display unit 20, an exhaust fan 17 for discharging the hot air inside the display unit 20 to the outside of the machine.
Is provided. A heater 18 is also provided as a heating means. Also, on the back surface of the display unit 20,
An outside air suction port 20 'for sucking outside air is provided, and the outside air sucked through the outside air suction port 20' is circulated in the display unit 20 by the circulation fan 19. The air circulating in the display unit 20 cools the air warmed in each display module 21 described later. The heat in the display unit 20 heated by the heater 18 is supplied to each display module 21 to heat the display tube and the control board in the display module 21.

FIG. 7 is a diagram showing the configuration of the display module 21 described above. Each display module 21 is composed of 4 × 8 display elements, and the drawing shows a vertical section thereof. Each display element 22 is composed of a lamp house 23 and a connector 22 ', and a control board 30 is arranged on the connector 22'. The rear portion of the lamp house 23 is housed in the display tube duct 31. Air in the display unit 20 is circulated in the display tube duct 31 by driving the circulation fan 32 in the display module. The flow of air circulating in the display tube duct 31 is indicated by solid arrows in the figure.

FIG. 8 is a perspective view for explaining the structure of the display element in detail. As shown in the figure, the display element is composed of two partition plates 22 ″ that divide the inside into three equal parts, and a total of three discharge tubes provided in each of the three partitions. Display tubes 22a to 22c, and heat conducting fin 2
It is composed of 4 and 25. The three discharge tubes 22a to
22c are red (R), green (G), and blue (B), respectively.
The fluorescent light-emitting material is applied, and the fluorescent light-emitting material is provided along the upper surface of the housing, for example.

The heat conducting fins 24, 25 described above are made of, for example, a specially processed silicone rubber having good heat conduction, and are made of a material having a high elasticity. The heat conducting fins 25 are located in the display tube duct 31 described above,
It is configured to be cooled or heated by a flow circulating in the display tube duct 31.

On the other hand, the heat conducting fins 24 are used for the lamp house 2
It is configured to project above the lamp house 23 through a hole (not shown) formed on the upper surface of the lamp housing 3. FIG. 9 is a sectional view showing this configuration in detail. The heat conducting fins 24 shown by hatching in the figure are fixed to the peripheral surface of the display tube 22a (22b, 22c) at the position where one electrode is disposed, and project above the lamp house 23 through a hole (not shown). There is. 10 is a diagram showing the structure of the heat conducting fin 24 alone.

Since the heat conducting fin 24 is made of a material having a high elasticity as described above, when it comes into contact with the metal fitting 27 provided on the housing of the display device, it is bent easily as shown in FIG. The contact area between the fin 24 and the metal fitting 27 can be increased. Therefore, the heat generated in the display tube 22a and the like can be easily released to the housing of the display device via the heat conducting fins 24 made of silicone rubber.

The temperature control operation of the display device of this embodiment will be described below. First, when the temperature sensor (not shown) detects that the ambient temperature of the display tube is equal to or lower than the optimum temperature at which the brightness of the display tube is maximum, the air heated by the heater 18 shown in FIG. By the circulation fan 32 in the display module, the display tubes 22a to 22c are circulated in the directions of the solid line and the dotted line, and are preheated until the optimum temperature, for example, 70 ° C. at which the emission brightness reaches the maximum, as described above. Then, after reaching the optimum temperature and starting the lighting operation of the display tubes 22a to 22c, the heating of the heater 18 for preheating is stopped.

After that, the fact that the surface temperature further rises above the optimum temperature due to the heat generation of the display tubes 22a to 22c itself,
When the temperature sensor detects, the exhaust fan 17
The high temperature air in the display unit 20 is exhausted, and the low temperature outside air is taken in through the outside air intake port 20 '. The air thus sucked is circulated through the display-tube duct 31 by the circulation fan 32 in the display module, lowers the surface temperature of the discharge tubes 22a to 22c, and the surface temperature of the display tubes 22a to 22c is optimized to maximize the emission brightness. It is controlled to keep the temperature around. Further, the temperature of the control substrate 30 is kept optimum.

The hot air that has passed through the display tube duct 31 is discharged to the display unit 20 at one end, and then is sucked into the display tube duct 31 by the circulation fan 32 in the display module, for example, the display tube 22a which remains unlit. Even if there is ~ 22c, it is always kept at a constant optimum temperature. Therefore, even if there are the display tubes 22a to 22c which are continuously turned off, the light can be emitted at the optimum temperature immediately when turned on.

[0055]

According to the present invention, before the display tube is lit by the display tube preheating means, the display tube is preheated so that the surface temperature of the display tube becomes the optimum temperature for lighting, so that the display tube is preheated. When the maximum brightness is obtained and the surface temperature of the display tube rises due to the heat generated by the display tube after the display tube lights up, and the temperature exceeds the optimum temperature, the display tube cooling means cools the display tube. The surface temperature of the display tube is kept at the optimum temperature.

Further, by cooling the control section for controlling the display operation of the display tube by the control section cooling means, the display operation of the display tube can be correctly controlled. Furthermore, the printed circuit board for control can be controlled to an appropriate temperature at the same time.
Efficient temperature control can be performed.

Further, also in a display device having a structure in which a control section for controlling the display operation of the display tube is integrally attached to the back surface of the display tube or a holder covering the display tube, the display / control section is controlled by the blowing means to optimize the temperature. Can be controlled.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a first embodiment.

FIG. 2 is an external view and a structural diagram of a display module.

FIG. 3 is a sectional view taken along the line AA ′ of FIG.

FIG. 4A is an external structural view of one display element,
(B) is a side view of one display element, and (c) is a front view of one display element.

5A is a top view of the display module of the second embodiment, and FIG. 5B is a side sectional view of the display module of the second embodiment.

FIG. 6 is a side sectional view of a display device according to a third embodiment.

FIG. 7 is a configuration diagram of a display module.

FIG. 8 is a perspective view of a display element.

FIG. 9 is a cross-sectional view of a display element.

FIG. 10 is a configuration diagram of a heat conducting fin 2.

FIG. 11 is a characteristic diagram showing the relationship between the surface temperature of the discharge tube and the brightness.

[Explanation of symbols]

 1 Discharge Tube 2, 7 Heater 3 Temperature Sensor 4 Display Module Circulation Duct 5 Control Printed Circuit Board 6 Intake / Exhaust Fan 8 Intake / Exhaust Port 9 Ventilation Duct 10 Lamp House 11 Chamber 12 Display Module Circulation Fan A 13 Display In-module exhaust fan B 14 In-unit intake fan C 15 Insulation material 17 Exhaust fan 18 Heater 19 Circulation fan 20 Display unit 20 'Outside air intake 21 Display module 22 Display elements 22a-22c Display tube 22' Lamp holder 23 Lamp house 24 , 25 heat conduction fins 27 metal fittings 31 ducts for display tubes 32 circulation fans in display modules

Claims (19)

[Claims] 1. In a display device using a display tube, a display tube preheating means for preheating the display tube so that the surface temperature of the display tube becomes the optimum temperature for lighting the display tube before the display tube is lit. A display tube cooling means for cooling the display tube in order to keep the surface temperature of the display tube during lighting at the optimum temperature; and a controller cooling means for cooling a control section for controlling the display operation of the display tube. And a temperature control device for a display device. 2. The preheating of the display tube by the display tube preheating means is performed by a heating means, a temperature detecting means, and a blowing means.
The temperature control device for a display device according to claim 1, wherein the temperature control device is performed by using a blower pipe that circulates warm air of a predetermined temperature. 3. The temperature of the display device according to claim 1, wherein cooling of the control unit by the control unit cooling unit is performed by hot air of the predetermined temperature used in the display tube preheating unit. Control device. 4. The display tube preheating means heats the display tube during driving of the display device in order to keep the surface temperature of the display tube at an optimum temperature, and the display tube cooling means sets the surface temperature of the display tube to the optimum temperature. The temperature control device for a display device according to claim 1, wherein the display tube is cooled while the display device is being driven in order to keep the temperature of the display device. 5. The display device according to claim 4, wherein the display tube cooling means cools the display tube during driving of the display device with warm air in order to keep the surface temperature of the display tube at an optimum temperature. Temperature control device. 6. A display device using a display tube, the display tube, a display / control section having a control section for controlling a display operation of the display tube formed in the vicinity of a rear portion of the display tube, and the display / control section. A temperature control device for a display device, comprising: an air blowing unit that sends hot air or cold air to the unit to control the display / control unit to an optimum temperature. 7. The temperature control device for a display device according to claim 6, wherein the blowing unit sends the warm air heated by the heating unit to the display / control unit. 8. The temperature control device for a display device according to claim 6, wherein the blowing unit sends the hot air heated by the display / control unit to the display / control unit again. 9. The temperature control device for a display device according to claim 6, wherein the blowing unit sends outside air to the display / control unit. 10. The temperature control device for a display device according to claim 6, wherein the air blower sends the air that has passed through the display / control unit to the display / control unit again. 11. The display / control unit has a duct communicating with the display tube and a duct communicating with the control unit separately, and the air blown from the air blowing unit is guided to the respective ducts. Display device temperature control device. 12. The heat conducting member is attached to the display tube of the display / control unit.
A temperature control device for the display device described. 13. The temperature control device for a display device according to claim 12, wherein one end of the heat conducting member is attached near an electrode portion of the display tube. 14. The temperature control device for a display device according to claim 12, wherein one end of the heat conduction member is in contact with a heat dissipation member mechanically connected to a casing of the display device. 15. The temperature control device for a display device according to claim 14, wherein the heat dissipation member is a metal plate member. 16. A display tube, a heat-conducting member attached to the display tube, and a heat-dissipating member mechanically connected to the housing of the apparatus main body and abutting the heat-conducting member. Display element. 17. The display element according to claim 16, wherein the heat conducting member is attached near the electrode portion of the display tube. 18. The display element according to claim 16, wherein the heat conducting member is an elastic body. 19. The display element according to claim 16, wherein the heat dissipation member is a metal plate member.