Heater including flexible printed wiring board and method for manufacturing same
A heater includes: a flexible printed wiring board including a base film and a metal foil provided on one side of the base film; a heater circuit portion that is formed from the metal foil and generates heat when energized; and a heat conductive foil portion that is formed from the metal foil at a position away from the heater circuit portion and is maintained in a non-energized state.
1. A heater comprising:
a flexible printed wiring board including a base film and a metal foil provided on one side of the base film;
a heater circuit portion that is formed from the metal foil and generates heat when energized; and
a heat conductive foil portion that is formed from the metal foil at a position away from the heater circuit portion and is maintained in a non-energized state;
wherein the heater circuit portion includes a heater wire that meanders in repeating patterns arranged in several adjacent rows, each row comprising a plurality of the repeating patterns; and
wherein the heat conductive foil portion is disposed between the rows or between adjacent ones of the repeating patterns.
2. A heater comprising:
a flexible printed wiring board including a base film and a metal foil provided on one side of the base film;
a heater circuit portion including a continuous heater wire formed from the metal foil; and
a connecting portion that is formed from the metal foil and short-circuits adjacent portions of the continuous heater wire, wherein
the heater circuit portion comprises:
a heat generating portion with a large amount of heat generated by energization; and
a heat conductive foil portion with a small amount of heat generated by energization but exhibiting a heat transfer function; and
the heat conductive foil portion includes the connection portion.
3. The heater according to claim 1 , wherein
the heater wire meanders at equal intervals and has a constant line width.
4. The heater according to claim 1 , further comprising an energizing portion that is formed from the metal foil and energizes the heater circuit portion.
5. The heater according to claim 4 , further comprising:
a cover film that covers a surface of the metal foil;
at least one electronic component provided on a front surface side of the cover film in a state where it can be electrically connected to the metal foil; and
a connector provided in a state where it can be electrically connected to the energizing portion.
6. The heater according to claim 2 , wherein
the heater circuit portion includes a heater wire that meanders at equal intervals and has a constant line width.
7. The heater according to claim 2 , further comprising an energizing portion that is formed from the metal foil and energizes the heater circuit portion.
8. The heater according to claim 7 , further comprising:
a cover film that covers a surface of the metal foil;
at least one electronic component provided on a front surface side of the cover film in a state where it can be electrically connected to the metal foil; and
a connector provided in a state where it can be electrically connected to the energizing portion.
9. A method for manufacturing a heater including a flexible printed wiring board, comprising:
forming from a part of a metal foil a heater circuit portion that generates heat when energized and a heat conductive foil portion that is maintained in a non-energized state, by etching a material including a base film and the metal foil provided on one side of the base film; and
providing a cover film covering a surface of the metal foil after the etching;
wherein forming the heater circuit portion includes forming a heater wire that meanders in repeating patterns arranged in several adjacent rows, each row comprising a plurality of the repeating patterns; and
wherein forming the heat conductive foil portion includes forming the heat conductive foil portion between the rows or between adjacent ones of the repeating patterns.
10. A method for manufacturing a heater including a flexible printed wiring board, comprising:
forming from a part of a metal foil a heater circuit portion including a continuous heater wire and a connecting portion that short-circuits adjacent portions of the continuous heater wire, by etching a material including a base film and the metal foil provided on one side of the base film; and
providing a cover film covering a surface of the metal foil after the etching.
11. The method for manufacturing the heater including the flexible printed wiring board according to claim 9 , wherein the etching includes forming an energizing portion for energizing the heater circuit portion from a part of the metal foil.
12. The method for manufacturing the heater including the flexible printed wiring board according to claim 11 , further comprising
after providing the cover film,
providing by reflow soldering at least one electronic component provided on a front surface side of the cover film in a state where it can be electrically connected to the metal foil and a connector provided in a state where it can be electrically connected to the energizing portion.
13. The method for manufacturing the heater including the flexible printed wiring board according to claim 10 , wherein the etching includes forming an energizing portion for energizing the heater circuit portion from a part of the metal foil.
14. The method for manufacturing the heater including the flexible printed wiring board according to claim 13 , further comprising
after providing the cover film,
providing by reflow soldering at least one electronic component provided on a front surface side of the cover film in a state where it can be electrically connected to the metal foil and a connector provided in a state where it can be electrically connected to the energizing portion.