Claims
- 1. An operating apparatus for a high-pressure discharge lamp having a light-emitting tube and a heater, said operating apparatus receiving power from a power source having a battery, charging means for charging the battery, and charging switch means for causing said charging means to start and stop the charging of said battery, said operating apparatus comprising:
- operating circuit means, including light switch means independent of heater operation and lighting circuit means, for receiving the power supplied from said power source and for generating a predetermined output only when said light switch means is turned on so as to start and maintain an ON state of said light-emitting tube;
- heater switch means, operated independently of said light switch means, for causing said heater to operate independently of an operating state of said light switch means; and
- heater control means for enabling power to be supplied to said heater by turning on said heater switch means only when said charging means is operated, and for turning off said heater switch means whenever said charging switch means is turned off.
- 2. An apparatus according to claim 1, wherein said heater control means starts power supply to said heater from said power source simultaneously when said charging switch means is turned on.
- 3. An apparatus according to claim 2, wherein said heater control means comprises first control switching means which is provided between said power source and said heater and is turned on synchronously with said charging switch means.
- 4. An apparatus according to claim 3, wherein said heater control means further includes stopping means for stopping power supply to said heater after said light-emitting tube becomes in a stable ON state.
- 5. An apparatus according to claim 4, wherein said stopping means includes power supply stop means for stopping power supply to said heater when a predetermined period of time has elapsed after said light switch means is turned on.
- 6. An apparatus according to claim 2, wherein said charging means includes a generator and a power section for driving said generator when said heater switch means is turned on, and said heater control means starts power supply to said heater from said power source simultaneously when operation of said power section is started.
- 7. An apparatus according to claim 2, wherein said charging means includes a transformer to be connected to an AC power source when said heater switch means is turned on, and said heater control means starts power supply to said heater from said power source simultaneously when said transformer is connected to said AC power source.
- 8. An apparatus according to claim 1, wherein said heater control means starts power supply from said power source to said heater in synchronism with starting of said light switch means when said heater switch means is turned on.
- 9. An apparatus according to claim 8, further comprising operation switch means, provided between said power source and said operating circuit means, for operating said operating circuit means, wherein said heater control means comprises first control switching means, which is turned on synchronously with said charging switch means, for connecting said power source and said heater through said light switch means in an ON state thereof.
- 10. An apparatus according to claim 9, wherein said heater control means further includes stopping means for stopping power supply to said heater after said light-emitting tube becomes in a stable ON state.
- 11. An apparatus according to claim 10, wherein said stopping means includes power supply stop means for stopping power supply to said heater when a predetermined period of time has elapsed after said light switch means is turned on.
- 12. An apparatus according to claim 8, wherein said charging means includes a generator and a power section for driving said generator when said heater switch means is turned on, and said heater control means starts power supply to said heater from said power source when operation of said power section is started and said light-emitting tube is started.
- 13. An apparatus according to claim 8, wherein said charging means includes a transformer to be connected to an AC power source when said heater switch means is turned on, and said heater control means starts power supply to said heater from said power source when said transformer is connected to said AC power source and said light-emitting tube is started.
- 14. An apparatus according to claim 8, wherein said heater control means further includes means for starting power supply from said power source to said heater simultaneously with starting of said light-emitting tube.
- 15. An apparatus according to claim 1, wherein said heater is provided near said light-emitting tube provided in said high pressure discharge lamp.
- 16. An operating apparatus for an automobile head light having a light-emitting tube and a heater, said operating apparatus receiving power from a power source having a battery, charging means for charging the battery, and charging switch means for causing said charging means to start and stop the charging of said battery, said operating apparatus comprising:
- operating circuit means, including light switch means independent of heater operation and lighting circuit means, for receiving the power supplied from said power source and for generating a predetermined output only when said light switch means is turned on so as to start and maintain an ON state of said light-emitting tube;
- heater switch means, operated independently of said light switch means, for causing said heater to operate independently of an operating state of said light switch means; and
- heater control means for enabling power to be supplied to said heater by turning on said heater switch means only when said charging means is operated, and for turning off said heater switch means whenever said charging switch means is turned off.
- 17. An apparatus according to claim 16, wherein said heater is provided near said light-emitting tube provided in said automobile head light.
- 18. An apparatus according to claim 16, wherein said heater control means starts power supply to said heater from said power source simultaneously when operation of said charging means is started.
- 19. An apparatus according to claim 16, wherein said heater control means starts power supply from said power source to said heater in synchronism with starting of said light switch means when said heater switch means is turned on.
- 20. An operating apparatus for high-pressure discharge lamps, each lamp having a light-emitting tube and a heater, said operating apparatus receiving power from a power source having a battery, charging means for charging the battery, and charging switch means for causing said charging means to start and stop the charging of said battery said operating apparatus comprising:
- operating circuit means, including light switch means independent of heater operation and lighting circuit means, for receiving the power supplied from said power source and for generating a predetermined output only when said light switch means is turned on so as to start and maintain an ON state of said light-emitting tubes, said operating circuit means further including means for outputting, in turn, said predetermined outputs to each of said light-emitting tubes;
- heater switch means, operated independently of said light switch means, for causing said heaters to operate independently of an operating state of said light switch means; and
- heater control means for sequentially enabling power to be supplied to each of said heaters from said power source by turning on said heater switch means only when said charging means is operated, and for turning off said heater switch means whenever said charging switch means is turned off.
Priority Claims (1)
Number |
Date |
Country |
Kind |
60-240963 |
Oct 1985 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 924,035, filed Oct. 28, 1986, which was abandoned upon the filing hereof.
US Referenced Citations (8)
Foreign Referenced Citations (4)
Number |
Date |
Country |
51-4881 |
Jan 1976 |
JPX |
52-110780 |
Aug 1977 |
JPX |
56-168346 |
Dec 1981 |
JPX |
58-54547 |
Mar 1983 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
924035 |
Oct 1986 |
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