JPH1043002A - Chair with built-in heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the temperature of a seating of a chair constant without using a temperature sensor or a temperature controller in a chair with a built-in heater. SOLUTION: A main body 2 of a chair and a heater cover 4 constitute a seating face of a heater built-in chair 1. A face-like heater 3 constituted of a PTC (positive temperature coefficient) is built in the seating face through polyurethane foam at the heater cover 4 side. Then, a wiring from a power supply is connected to the face-like heater 3 and current is allowed to flow in the face-like heater 3 and the heater 3 is let to do self-controlled generation of heat and is used as a self-controlled heater. As for another method, the seating face of the heater built-in chair 1 is constituted of a pad and the main body of the chain and the face-like heater 3 is built in the seating face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair having a built-in heater in a seating surface, and more particularly to a facility for accommodating a large number of spectators in a low-temperature venue such as an indoor ice competition venue (ice arena). It is suitable.

[0002]

2. Description of the Related Art In ice arenas such as ice hockey venues, figure skating venues, and indoor speed skating venues, in order to prevent melting of ice at a stadium, the stadium is used in a situation where heating is hardly performed despite winter use. Have been. Therefore, the spectator will watch the game in a state of thick clothing, which is close to the state of clothing outdoors in winter to prevent cold.

[0003] As described above, since it is necessary to watch the game with thick clothes despite watching sports indoors, it is inevitable to watch the game in a state where the audience is hard to move, and as a result, cheering and other fun watching games May be a factor to hinder.

[0004]

As one of means for protecting the audience from the cold without increasing the temperature of the ice arena, a chair having a built-in heater in the seating surface can be considered. Some of such chairs having a built-in heater in the seating surface have been conventionally used as chairs for automobiles in cold regions such as Northern Europe. However, the heater used in such a chair is a general resistance-type linear heater, and in order to keep the temperature of the seating surface of the chair constant, a temperature sensor is built in the inside of the chair. It requires a temperature control circuit or a temperature control device that controls the temperature of the seating surface by the output of the temperature sensor.

[0005] Therefore, the conventional chair with a built-in heater is suitable for use in a small car having a small number of seats like an automobile, but is suitable for use in a large venue such as an ice arena where the number of seats is very large. Has a problem that it is not suitable because control becomes complicated. The present invention has been made to solve such a problem, and an object of the present invention is to provide a chair with a built-in heater that maintains a constant temperature of a seating surface without using a temperature sensor, a temperature control circuit, or a temperature control device. I have.

[0006]

In order to achieve the above object, the present invention provides a chair with a built-in heater in which a heater is built in a seating surface of the chair, wherein the heater comprises a sheet heater having a positive temperature coefficient of resistance. It is characterized by having done. The chair with built-in heater configured in this way
Before the seating surface reaches the temperature at which the audience begins to feel hot when the audience sits on the seating surface, the resistance value of the sheet heater with a positive temperature coefficient of resistance built into the seating surface increases, The temperature rise of itself is suppressed, and the temperature increase of the seating surface is also suppressed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a chair with a built-in heater according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the configuration of a first embodiment of a chair with a built-in heater of the present invention, FIG. 2 is a perspective view of the configuration of another embodiment of a chair with a built-in heater of the present invention, and FIG. PTC (Positive Temperature Coefficient:
6 is a graph showing an example of a resistance-temperature characteristic of a (positive temperature coefficient) heater.

As shown in FIG. 3, the PTC heater of the present invention has, in its resistance-temperature characteristic, a portion having a positive temperature coefficient in which the resistance value increases as the temperature rises. The portion of the resistance-temperature characteristic is used as a heater. Specifically, it is an organic PTC heater, for example, carbon black is mixed into plastics, and is stabilized by cross-linking by electron beam irradiation or the like, and is formed in a planar shape according to the seating surface of the chair. Used as a planar self-control heater. The planar heater is formed by printing or the like on an insulating film such as a polyester film, and electrodes are attached thereto by electrolytic copper foil or conductive printing. Therefore, the heat generation density over the entire surface of the planar heater is uniform. Then, a terminal is provided at an end of the electrode, a wiring from a power supply is connected to the terminal, and a current is caused to flow to generate self-controlled heat, and the terminal is used as a self-controlled heater.

In FIG. 1, 1 is a chair with a built-in heater, 2
Is the main body of the chair, considering the strength and formability, FRP (Fibe
rglass Reinforced Plastics (glass fiber reinforced plastics) and molded integrally with a back. 3
Is a planar heater, which is the PTC heater. Reference numeral 4 denotes a heater cover, which is a molded article of an impact-resistant resin, for example, an acrylic-modified high-impact vinyl chloride resin. 5 is a urethane foam, a cushioning material for preventing the sheet heater 3 from being directly caught between the chair body 2 and the heater cover 4 and being damaged;
In addition, it has a function as a heat shielding material for preventing heat from the planar heater 3 from being radiated downward from small holes provided in the heater cover 4. The chair 1 with a built-in heater is assembled by stacking the heater cover 4, urethane foam 5, sheet heater 3 and chair body 2 in this order and screw holes (not shown) provided at the four corners of the heater cover 4. 4 and assembled from below.

In FIG. 2, 1 is a chair with a built-in heater, 6
Is a pad, which also serves as a seating surface and a cushion material, and is a molded article of an impact-resistant resin, for example, an acrylic-modified high-impact vinyl chloride resin, like the heater cover 4. 3 is a sheet heater, 7 is a seat body, which is also a resin molded product,
For example, it is formed by molding high-density polyethylene. In the assembly of the chair 1 with a built-in heater of this example, similarly to the chair 1 with a built-in heater of the first embodiment, the seat body 7, the sheet heater 3, and the pad 6 are stacked in this order, and screwed from below the seat body 7. And assembled.

The chairs 1 with built-in heaters assembled as described above are mounted in a predetermined number of places on the stair-like floor of the ice arena according to the number of persons accommodated therein. Wiring from a power source is connected to the terminals of the heater 3, and the audience seats of the ice arena are completed.

In the heater-equipped chair 1 of the present invention, the seating surface is uniformly heated by the built-in planar heater 3. Then, the temperature characteristics of the PTC heater of the planar heater 3, the chair body 2 and the pad 6, which form the seating surface, and the heater so that the temperature of the seating surface becomes approximately 35 ° C. when the indoor temperature of the ice arena is 10 ° C. The materials and shapes of the cover 4, the urethane foam 5, and the seat body 7 are selected. Therefore, the seating surface is always heated uniformly and at a constant temperature.

[0013]

As described above, according to the chair with a built-in heater according to the present invention, the seating surface is uniformly heated and is always kept at a constant temperature, so that the spectator sitting on the seating surface can enjoy the comfort. It is warmed at a constant temperature within the range where there is no danger of low-temperature burns, and warms with a comfortable warmth even when sitting for a long time without comfort such as suddenly warming when sitting, and comfortable even in the cold environment of the ice arena You can watch the competition.

[Brief description of the drawings]

FIG. 1 is a configuration perspective view of a first embodiment of a chair with a built-in heater according to the present invention.

FIG. 2 is a configuration perspective view of another embodiment of a chair with a built-in heater according to the present invention.

FIG. 3 is a graph showing an example of resistance temperature characteristics of a PTC heater used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chair with built-in heater 2 Chair body 3 Plane heater 4 Heater cover 5 Urethane foam 6 Pad 7 Seat body

Continuation of the front page (72) Inventor Masaru Ozaki 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Nagashi 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima (72) Inventor Tadashi Shirouchi 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Corporation (72) Inventor Dimi Momose 1-2-2, Yurakucho, Chiyoda-ku, Tokyo (72) Inventor Shigeru Taira In the city of Mitoyo Seiko Co., Ltd. at 2963 Ishikawacho, Hachioji-shi, Tokyo

Claims (2)

[Claims] 1. A chair with a built-in heater in which a heater is built in a seating surface of the chair, wherein the heater is constituted by a planar heater having a positive temperature coefficient of resistance. 2. The chair with a built-in heater according to claim 1, wherein a cushion material is interposed on an upper surface or a lower surface of the planar heater.