Hid single light emitting point lamp tube switching device for switching lamp tube in positions of far light and near light and the method of the same

• US 6,873,110 B2
• Filed: 10/02/2002
• Issued: 03/29/2005
• Est. Priority Date: 10/02/2002
• Status: Expired due to Fees

• Current Assignee: Clario Tech Limited
• Original Assignee: Chin-Fa Yen, Kuo-Pin Yen
• Inventors: Yen, Chin-Fa, Yen, Kuo-Pin
• Primary Examiner(s): Vo, Tuyet Thi
• Application Number:
  US10/262,343
• Publication Number:
  US 20040066144A1
• Time in Patent Office: 909 Days
• Field of Search: 315/82, 315/83, 315/80, 315/81, 315/76, 315/344, 315/362, 315/77, 315/193, 315/185.R, 315/267, 315/291, 315/298, 315/307, 315/360, 315/DIG.4, 307/143, 307/141, 307/139, 307/140, 307/141.4, 307/10.1, 307/10.8, 340/480, 340/477, 340/468, 340/469, 340/475
• US Class Current: 315/82
• CPC Class Codes: B60Q 1/1415 Dimming circuits

Abstract

An HID single light emitting point lamp tube switching device is provided for switching the lamp tube between a far light position and a near light position. Initially, a strong current coil and a weak current coil are induced at the same time, so that the HID single light emitting point are moved to the second position, and at end of a time period set in the timer, the strong current coil will be interrupted so that only the weak current coil is actuated to maintain the HID single light emitting point in the second position.

Claims

1. An HID single light emitting point lamp tube switching device for switching the lamp tube between a far light position and a near light position;

the HID single light emitting point lamp tube having a light emitting point therein, initially the HID single light emitting point being positioned in a first position;

comprising;

a first relay having a first coil and a first pair of joints;

the first coil being connected to a switching for switching the lamp tube between a far light position and a near light position;

a second relay having a second coil and a second pair of joints;

a strong current coil having a first end connected to one joint of the second relay and a second end connected to a power source;

the strong current coil being magnetically coupled to the light emitting point in the HID single light emitting point lamp tube;

a weak current coil having a second end connected to one joint of the first relay and a second end connected to a power source;

the current provided by the weak current coil being weaker then that of the strong current coil;

the weak current coil being magnetically coupled to the HID single light emitting point;

a timer having an output connected to second coil in the second relay;

one input of the timer being connected to the second end of the strong current coil; and

another input of the timer being connected to the other joint of the pair of joint of the first relay;

wherein by the current from the strong current coil and the weak current coil, the HID single light emitting point is magnetically induced so as to move to a second position;

when the switch is positioned to cause the first coil to conduct, the strong current coil and weak current coil are induced at the same time, so that the HID single light emitting point are moved to the second position, and at end of a time period set in the timer, the strong current coil will be interrupted, so that only the weak current coil is actuated to maintain the HID single light emitting point in the second position;

wherein the first position is a far light position which cause the HID single light emitting point to emit far light, and the second position is a near light position which cause the HID single light emitting point to emit near light; and

wherein the second position is a far light position which cause the HID single light emitting point to emit far light, and the first position is a near light position which cause the HID single light emitting point.

2. A method for switching HID single light emitting point lamp tube switching device to be in a first position and a second position, wherein the HID single light emitting point lamp tube switching device having a switch, a strong current coil, a weak current coil and a timer;

said strong current coil and said weak current coil being magnetically coupled to the HID single light emitting point so that the strong current coil and weak current coil being moved between the first position and the second position;

comprising the step of;

actuating the switch to cause the strong current coil and weak current coil to move the HID single light emitting point from a first position to a second position;

stopping excitation of the strong current coil at an end of a time period set by the timer;

remaining the excitation of the weak current coil so that the HID single light emitting point is remained in a second position.

wherein the first position is a far light position which cause the HID single light emitting point to emit far light, and the second position is a near light position which cause the HID single light emitting point to emit near light; and

wherein the second position is a far light position which cause the HID single light emitting point to emit far light, and the first position is a near light position which cause the HID single light emitting point.