JP2008247375A - Heating device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that in a conventional vehicle heating device, a part of a body of an occupant continuously contacts with a heat radiation member by a physique and a sitting attitude of the occupant and body action or the like during driving, and in such a case, the contacting portion is unnecessarily heated and there is a possibility of generating an uncomfortable sense and a low-temperature burn. <P>SOLUTION: In the heating device for the vehicle, since processing for increasing contact thermal resistance is applied to the surface of the heat radiation member 3, even if a part of the body of the occupant contacts with the heat radiation member 3, because the contact thermal resistance is large, thermal conduction from the heating means hardly occurs and the contacting portion is not unnecessarily heated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heating device for a vehicle.

Conventionally, this kind of vehicle heating device is disclosed in Patent Document 1. In this prior art, a planar electric heater is disposed along the surface of the interior member in the vehicle interior, and a heat radiating member made of a material having a high thermal emissivity is disposed on the surface of the electric heater. . The heat radiating member is heated by the heat generated by the electric heater, and infrared rays are emitted from the surface of the heat radiating member (see, for example, Patent Document 1).
JP 2005-212556 A

  However, in the above prior art, a part of the occupant's body may continue to touch the heat radiating member depending on the occupant's physique, sitting posture, body movement during driving, etc. However, there were problems such as causing discomfort and low-temperature burns.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a vehicle heating device that is not unnecessarily heated even if it comes into contact.

  In order to solve the above-described conventional problems, a vehicle heating apparatus according to the present invention includes a heating unit disposed on an interior member in a vehicle interior, and heat radiation disposed on a surface of the interior member or the heating unit. The heat radiation member is characterized in that the surface is processed to increase the contact thermal resistance.

  In the vehicle heating device of the present invention, since the surface of the heat radiation member is processed to increase the contact thermal resistance, even if a part of the body of the passenger contacts the heat radiation member, Since the thermal resistance is large, heat conduction from the heating means is difficult to be performed, and the contact part is not unnecessarily heated.

  1st invention is provided with the heating means arrange | positioned at the interior member of a vehicle interior, and the heat radiation member arrange | positioned on the surface of the said interior member or the said heating means, The said heat radiation member is contact heat on the surface. It is characterized by being processed to increase the resistance.

  In the second invention, in particular, in the first invention, the heat radiation member is subjected to at least one of raising, flocking, embossing, and embossing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is an external view of a side door panel 1 provided with a vehicle heating device according to a first embodiment of the present invention. Here, the side door panel 1 is for a driver's seat side door. In the drawing, a heating means 2 is disposed on a side door panel 1 as an interior member. The heating means 2 is formed by sheeting an ultrafine heater wire through a nonwoven fabric. A thermistor is disposed in the vicinity of the heater wire. Moreover, although not shown in the figure, there is provided control means for controlling energization of the heater wire so that the thermistor output becomes a preset temperature set in advance.

  2 is a cross-sectional view taken along the line AA of FIG. In the figure, the heating means 2 is disposed on the surface of the side door panel 1, and the heat radiation member 3 is disposed on the surface of the heating means 2. In the figure, the front left side is the vehicle inner side and the right side is the vehicle outer side. The heat radiation member 3 has, for example, a structure in which a sheet-like synthetic fabric is bonded to a thin urethane sheet, and the surface on the inner side of the vehicle (the surface of the synthetic fabric) is brushed. The heating means 2 is disposed at a position where the radiant heat is efficiently applied from the knee to the lower leg when the driver is seated.

  With the above configuration, when the heater wire of the heating unit 2 is energized, the control unit controls the energization of the heater wire so that the thermistor output becomes a preset temperature. At this time, radiant heat is generated from the heat radiating member 3 due to heat generated by the heater wire, and is radiated to the knee to the lower leg of the driver while seated to warm the knee to the lower leg of the driver.

  Also, even if a part of the driver's body contacts the heat radiating member 3, the surface of the heat radiating member 3 is brushed and the contact heat resistance is large, so that the heat conduction from the heating means 3 is reduced. The contact portion is not heated unnecessarily.

  In the above embodiment, the surface of the heat radiating member 3 is brushed, but the surface of the heat radiating member 3 may be textured or embossed to increase the contact heat resistance. If it is the structure which increases this, it will not be limited to the said Example.

  Moreover, it is preferable to select the side door panel 1 whose thermal conductivity is lower than the thermal conductivity of the heat radiation member 3. According to this configuration, the heat generated by the heating means 2 is not easily dissipated through the side door panel 1, and the heat radiation from the heat radiating member 3 can be efficiently performed.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIG.

  FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1 in the present embodiment. In the present embodiment, as shown in FIG. 3, the heating means 2 is disposed outside the side door panel 1 and the heat radiation member 3 is disposed inside the vehicle. A heat insulating member 4 is disposed on the vehicle outer surface of the heating means 2. As the side door panel 1 in the present embodiment, a material having a good thermal conductivity, for example, a composite material in which metal particles are kneaded with a resin, is used at least in a region where the heating means 2 is disposed.

  The heat generated by the heating means 2 is efficiently transmitted to the heat radiating member 3 and radiated to the inside of the vehicle by the heat insulating member 4 and the side door panel 1 having good heat conductivity. Further, since the heating means 2 is not disposed on the vehicle interior side of the side door panel 1, there is no problem in appearance such as a local rise of the heat radiation member 3 due to the heater wire.

  In the above embodiment, a heater wire is used as the heating means 2. However, for example, a planar heater having PTC characteristics may be used, and the rise after energization is quick and the safety is improved. There is a merit such as.

  Further, although the above embodiment is applied to the side door panel 1, heating means and heat radiation members are arranged on interior members in other parts of the vehicle interior such as the lower part of the instrument panel, the left and right side surfaces of the center console, and the rear part of the front seat. A configuration may be adopted.

  Further, as the energization control of the heating means, full energization is performed at the initial energization, and when stable, the on / off interval of energization and the set temperature may be controlled with a 1 / f fluctuation pattern to achieve both energy saving and comfort. .

  Furthermore, it may be controlled in conjunction with a car air conditioner or a seat heater. For example, when heating is started, the present invention and the seat heater (seat surface / back surface) are fully energized, so When the engine is exhausted and warming-up is possible with exhaust heat, the whole room is heated by blowing warm air from an air conditioner. A configuration may be adopted in which the interval and the set temperature are controlled by a 1 / f fluctuation pattern to achieve both energy saving and comfort.

  As described above, the vehicular heating device of the present invention is not unnecessarily heated even when it comes into contact with radiant heating. For example, a desk heater, a kick heater, an electric kotatsu, etc. It becomes possible to apply to the radiant heating appliance which a part touches easily.

1 is an external view of a side door panel 1 provided with a vehicle heating device according to a first embodiment of the present invention. Sectional drawing in the AA cross section of FIG. Sectional drawing in the AA cross section in the 2nd Embodiment of this invention

Explanation of symbols

1 Side door panel (interior material)
2 Heating means 3 Heat radiation member

Claims (2)

Heating means disposed on an interior member in a vehicle interior, and a heat radiation member disposed on the interior member or the surface of the heating means, the heat radiation member being processed to increase contact thermal resistance on the surface. Applied vehicle heating device. The vehicle heating device according to claim 1, wherein the heat radiation member is subjected to at least one of raising, flocking, embossing, and embossing.

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