JPH04218464A - Heater device for seat - Google Patents

Abstract

PURPOSE:To obtain an economical seat heater device performing efficient heating for the feet of passengers and the interior of a passenger room in an electric train or the like by diffusing heat so as to be neither shut in a cover body nor concentrated under a seat. CONSTITUTION:A container body 8 with an operating fluid filled therein is installed under a seat 1. A sheathed wire heating body 11 is disposed being dipped into the operating fluid 9 in the container body 8, and there is provided a transmission pipe 10 with one opening end thereof connected to the gas phase part of the container body 8. A cover body 12 is installed to cover this transmission pipe 10, and plural air holes 13 are formed at this cover body 12. A fan 14 is further disposed below the transmission pipe 10.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat heater device installed under the seat of a train or the like for heating the seat.

0002

[Prior Art] FIGS. 5 and 6 are, for example, Japanese Patent Laid-Open No. 62-1
A conventional seat heater device disclosed in Publication No. 05767 is shown, and in each of these figures, 1 is a seat of a train, etc., 2 is a floor of a train, etc. on which the seat 1 is installed, and 3 is a floor 2 under the seat 1.
A seat heater device 4 is a sheathed wire heating element, and is arranged along the longitudinal direction of the seat 1. 4a
4b is the heat generating part of the sheathed wire heating element 4, and 4b is the sheathed wire heating element 4.
5 is a cover body that covers the sheathed wire heating element 4; 6 is a lead portion;
A plurality of air holes are formed in the cover body 5 and are for discharging air warmed by the heat generated by the heat generating portion 4a of the sheathed wire heating element 4 from inside the cover body 5 to the outside, that is, to the seat 1 side.

Next, the operation will be explained. When power is supplied to the sheathed wire heating element 4 through its lead portion 4b, the heating portion 4a of the sheathed wire heating element 4 generates heat. The air inside the cover body 5 warmed by the heat generated by the heat generating portion 4a is discharged to the outside of the cover body 5 through the air holes 6 by convection. This emitted heat heats the passengers' feet and the inside of the passenger car.

0004

[Problems to be Solved by the Invention] However, in the above-mentioned seat heater device, the warmed air becomes convection,
Since the heating is concentrated under the seat 1, heating is reduced to the areas where it is needed, resulting in poor efficiency. Further, since the cover body 5 is attached to the sheathed wire heating element 4, heat tends to be trapped inside, and the heat generated by the sheathed wire heating element 4 cannot be fully utilized. Furthermore, it is necessary to arrange the expensive sheathed wire heating element 4 along substantially the entire length of the seat 1 in the longitudinal direction, making it extremely uneconomical.

[0005] This invention was made to solve the above-mentioned problems, and enables efficient heating, and
The purpose of the present invention is to obtain a seat heater device that is highly economical.

[0006]

[Means for Solving the Problems] A seat heater device according to the present invention is provided with a protrusion in the vicinity of an air hole of a cover body that covers a sheathed wire heating element.

[0007] In addition, a seat heater device according to another invention includes a container body in which a working fluid is sealed on the floor near one end of the seat, and a gas phase portion of the container body and a gas phase portion of the container body. A communicating transmission pipe is arranged, the sheathed wire heating element is arranged so as to be immersed in the working fluid inside the container body, a cover body is provided to cover the transmission pipe, a plurality of air holes are formed in this cover body, and the transmission pipe A fan is installed below the.

[0008]

[Function] The seat heater device according to the present invention can induce turbulence in the air released from the air hole by the protrusion provided on the cover body near the air hole, and the heated air can thereby be effective. to spread.

In addition, in a seat heater device according to another invention, the working fluid in the container body is directly heated and vaporized by the sheathed wire heating element, and the heat of the sheathed wire heating element is absorbed as evaporation latent heat to be transferred to one side of the transfer pipe. The heat is transmitted to the other side through the cover body, and the air warmed by the heat is sent out to the outside of the cover body through the air holes by the fan.

0010

[Example] Example 1. An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In each of these figures, numerals 1 to 6 have the same structure as the conventional device described above. 7 is a protrusion provided on the cover body 5 near the air hole 6, which creates turbulence in the air warmed by the sheathed wire heating element 4 discharged from the inside of the cover body 5 to the outside, that is, to the seat 1 side. It is something that is triggered and spread.

Next, the operation will be explained. When power is supplied to the sheathed wire heating element 4 through its lead portion 4b, the heating portion 4a of the sheathed wire heating element 4 generates heat. The air inside the cover body 5 warmed by the heat generated by the heat generating portion 4a is discharged to the outside of the cover body 5 through the air holes 6 by convection. At the time of this discharge, turbulence is induced in the warmed air by the protrusion 7 provided near the air hole 6, and the heat can be effectively diffused without being concentrated under the seat 1. Therefore, the heating of the required area can be reliably performed and the heating efficiency can be improved.

Example 2. In addition, there is another invention shown in FIGS. 3 and 4, and in each of these figures, 8 is installed on the floor under the vicinity of one end of the seat 1, and there is water, ammonia, etc. inside. A container body in which a working fluid 9 is sealed, 10 is one side 1
The open end of 0a communicates with the gas phase part of the container body 8, and the other side 10
b is a transmission pipe extending near the other end of the seat 1;
The figure shows a case where three wires are provided as an example. Reference numeral 11 denotes a sheathed wire heating element in which a heat generating part 11a is immersed in the working fluid 9 in the container body 8, and 11b is a lead part thereof. 1
2 is a cover body that covers the transmission pipe 10; 13 is a plurality of air holes formed in the cover body 12; 14 is arranged below the transmission pipe 10; This is a fan that sends out air to the outside of the cover body 12, that is, to the seat 1 side.

Next, the operation of another invention will be explained. When power is supplied to the sheathed wire heating element 11 through its lead portion 11b, the heating portion 11a of the sheathed wire heating element 11 immersed in the working fluid 9 in the container body 8 generates heat. Due to this heat generation, the working fluid 9 in the container body 8 is directly heated and vaporized, and the heat from the heat generating portion 11a of the sheathed wire heating element 11 is taken away as latent heat of vaporization, and the fluid is passed through the open end of one side 10a of the transfer pipe 10 to the seat 1. to the other side 10b of the transmission pipe 10, which extends to the vicinity of the other end of the transmission pipe 10. The steam that has moved to the other side 10b of the transfer pipe 10 is condensed and liquefied because the ambient temperature on the other side 10b of the transfer pipe 10 is significantly lower than the temperature of the sheathed wire heating element 11 due to the cold air from the fan 14. Heat is radiated into the surrounding air inside the cover body 12. The air inside the cover body 12 warmed by this heat radiation is sent out from the air hole 13 to the outside of the cover body 12, that is, to the seat 1 side by the sending force of the fan 14. The heated air sent to the seat 1 side is heated by the fan 14's output power.
It is diffused without being concentrated under. On the other hand, the transmission pipe 10
The working fluid 9 condensed and liquefied on the other side 10b of the transmission pipe 10
The water flows back along the inner wall surface of the container body 8 from the open end of one side 10a due to gravity. As described above, by repeating the evaporation, condensation and liquefaction of the working fluid 9, the sheathed wire heating element 11
heat can be transmitted to the other side 10b of the transfer pipe 10 at a high speed, and by the power of the fan 14, it is efficiently sent to the seat 1 side through the air hole 13 provided in the cover body 12, and is concentrated under the seat 1. It is possible to heat the passengers' feet and the inside of the passenger car extremely efficiently. In addition, the expensive sheathed wire heating element 11 may be shorter than the depth dimension of the seat 1, and can be significantly shorter than the conventional one that has approximately the entire length in the longitudinal direction of the seat 1, resulting in a significant cost reduction. An economical seat heater device can be obtained.

Example 3. In the second embodiment, a case has been described in which three transmission pipes 10 are provided in a row, but the intended purpose can be achieved if at least one transmission pipe 10 is provided. In addition, by providing a plurality of transmission pipes 10 in a plurality of rows, a large heating capacity can be obtained, and the number of transmission pipes 10 may be set according to the heating capacity.

Example 4. Further, in the second embodiment, the air hole 1 provided in the cover body 12 is
3, the cover body 12 near the air hole 13 is provided with a protrusion (not shown) so that the warmed air is sent out from the air hole 13 by the fan 14. By inducing turbulence in the air,
Furthermore, it is possible to enhance the diffusion effect and perform even more efficient heating.

Example 5. Further, in the second embodiment, the case where the transmission pipe 10 is installed in a horizontal state is described, but the other side 10b of the transmission pipe 10
may be arranged so as to be inclined from one side 10a. In this case, it is possible to further enhance the circulation of the working fluid 9 and further improve the heat exchange characteristics, and to perform more efficient heating. I can do it.

[0017]

[Effects of the Invention] As explained above, the present invention is capable of inducing turbulence in the air released from the air hole by the protrusion provided on the cover body near the air hole, thereby dispersing the warmed air. The air can be effectively diffused and efficient heating can be performed.

[0018] In another invention, the working fluid is directly heated and vaporized by a sheathed wire heating element immersed in the working fluid in a container body sealed with the working fluid, and the heat of the sheathed wire heating element is absorbed. The latent heat of evaporation is taken away and transferred to the other side through one side of the transfer pipe, and the heat is radiated.The air warmed by the heat is then sent to the outside of the cover body through the air hole by the fan, so that no heat is generated inside the cover body. The heated air sent out to the outside of the cover body can be diffused without being trapped under the seat, and heating can be performed extremely efficiently. Furthermore, the sheathed wire heating element can be smaller than the depth of the seat, resulting in a significant cost reduction and an economical seat heater device.

[Brief explanation of the drawing]

FIG. 1 is a front view showing Embodiment 1 of the present invention.

FIG. 2 is a sectional view showing essential parts of Example 1 of the present invention.

FIG. 3 is a front view showing a second embodiment of the invention.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, showing a second embodiment of the present invention.

FIG. 5 is a front view showing a conventional seat heater device.

FIG. 6 is a cross-sectional view showing the main parts of a conventional device.

[Explanation of symbols]

1 Seat 2. Floor 4 Seed wire heating element 5 Cover body 6 Air hole 7 Protrusion 8 Container body 9 Working fluid 10 Transmission pipe 11 Seed wire heating element 12 Cover body 13 Air hole 14 Fan

Claims (2)

[Claims] [Claim 1] A sheathed wire heating element installed on the floor under the seat, a cover body that covers the sheathed wire heating element, and a plurality of heating elements formed on the cover body and heated by the heat generated by the sheathed wire heating element. An air hole for discharging air from the cover body to the outside, and a protrusion provided in the cover body near the air hole to induce turbulence in the air discharged from the cover body to the outside. A seat heater device featuring: 2. A container body installed on the floor below near one side end of the seat and having a working fluid sealed inside; a transmission pipe whose side extends near the other end of the seat; a sheathed wire heating element having a heat generating part immersed in working fluid in the container body; a cover body covering the transmission pipe; For a seat, comprising: a plurality of air holes; and a fan, which is disposed below the transmission pipe and sends air warmed by heat radiation from the transmission pipe to the outside of the cover body through the air holes. heater device.