Heating Device for Seat

• US 20090095725A1
• Filed: 08/10/2006
• Published: 04/16/2009
• Est. Priority Date: 08/11/2005
• Status: Active Grant

• Current Assignee: Kurabo Industries Limited
• Original Assignee: Kurabo Industries Limited
• Inventors: Ohashi, Tadahiko, Ohashi, Yasuhiro
• Granted Patent: US 8,492,680 B2
• Time in Patent Office: Days
• US Class Current: 219/202
• CPC Class Codes: B60N 2/5685 Resistance
• CPC Class Codes: H05B 2203/003 using serpentine layout
• CPC Class Codes: H05B 2203/014 Heaters using resistive wires or cables not provided for in H05B3/54
• CPC Class Codes: H05B 2203/029 Heaters specially adapted for seat warmers
• CPC Class Codes: H05B 3/34 flexible, e.g. heating nets or webs

Abstract

A heating device for a seat exhibiting excellent durability, reliability, safety and enhanced workability in fixing work to a seat while reducing the cost and weight and ensuring comfortable feeling at seating without causing a strange feeling. The heating device for a seat comprises a heating matter (4) including a base substance (2) and a heating wire (3) arranged on the base substance, a temperature detection element (5) for detecting temperature of the heating matter, and a temperature control circuit (1) for controlling temperature of the heating matter based on the output from the temperature detection element, characterized in that the temperature detection element and the temperature control circuit are arranged at predetermined positions on the base substance. The temperature control circuit is insulation-covered together with a part of lead wires connected to the temperature control circuit.

Claims

1. A heating device for a seat comprising:

a heating matter including a base substance and a heating wire arranged on said base substance;

a temperature detection element for detecting temperature of said heating matter; and

a temperature control circuit for controlling temperature of said heating matter according to an output signal from said temperature detection element, wherein,

said temperature detection element and said temperature control circuit are arranged at predetermined positions on said base substance.

2. The heating device for a seat as claimed in claim 1, further wherein,

said temperature control circuit is insulation-covered together with a part of lead wires connected to said temperature control circuit.

3. The heating device for a seat as claimed in claim 2, further wherein,

ends of said lead wires for connecting to said temperature control circuit have been protection-covered in advance, and then is insulation-covered together with said temperature control circuit.

4. The heating device for a seat as claimed in claim 2, wherein,

said insulation-covering is done by heat-shrinkable tube.

5. The heating device for a seat as claimed in claim 4, further wherein,

said heat-shrinkable tube for said insulation-covering is provided with a thermoplastic adhesive layer in the inside of said heat shrinkable tube.

6. The heating device for a seat as claimed in claim 1, further wherein,

said lead wires of said temperature detection element are connected to said temperature control circuit on said base substance.

7. The heating device for a seat as claimed in claim 1, further wherein,

said temperature control circuit has the thickness not more than 9 mm.

8. The heating device for a seat as claimed in claim 1, further wherein,

a surface among the upper and lower surfaces of said temperature control circuit, to which a load is applied when being mounted on a seat, is incorporating a reinforcing plate in the inside of said temperature control circuit.

9. The heating device for a seat as claimed in claim 1, further wherein,

said insulation-covering is done by incorporating said temperature detection element in said temperature control circuit.

10. The heating device for a seat as claimed in claim 9, further wherein,

said temperature detection element has been mounted at a position adjacent to electronic parts generating heat in the inside of said temperature control circuit.

11. The heating device for a seat as claimed in claim 9, further wherein,

a surface among the upper and lower surfaces of said temperature control circuit, to which a load is applied when being mounted on a seat, is incorporating a reinforcing plate in the inside of said temperature control circuit;

and

said temperature detection element is mounted on the other side of said reinforcing plate on which electronic parts have been mounted.

12. The heating device for a seat as claimed in claim 9, further wherein,

at least one surface among the upper and lower surfaces of said temperature detection element is provided with a heat collecting metal foil.

13. The heating device for a seat as claimed in claim 9, further wherein,

said reinforcing plate has a groove for incorporation said temperature detection element in the inside of said groove.

14. The heating device for a seat as claimed in claim 2, wherein, said insulation-covering is done by heat-shrinkable tube.