Multi-functional high intensity discharge automobile headlamp

• US 7,173,376 B1
• Filed: 08/03/2005
• Issued: 02/06/2007
• Est. Priority Date: 08/03/2005
• Status: Expired due to Fees

• Current Assignee: Poweramper Electronic Industry Corp.
• Original Assignee: Poweramper Electronic Industry Corp.
• Inventors: Lin, Jack
• Primary Examiner(s): Tran; Thuy V.
• Assistant Examiner(s): Duong; Dieu Hien
• Application Number:
  US11/195,556
• Publication Number:
  US 20070029938A1
• Time in Patent Office: 552 Days
• Field of Search: None
• US Class Current: 315/82
• CPC Class Codes: B60Q 1/1407 General lighting circuits comprising dimming circuits

Abstract

A multi-functional high intensity discharge automobile headlamp features a circuit board installed within a system control box. The circuit board comprise a circuit for automatic detection and protection so that the voltages of the near lights and far lights can be determined and correctly switched, a circuit for DC/DC conversion connected to a far/near light switch and a DC/AC voltage regulator so that the voltages necessary for the near or far lights can be supplied, a circuit for voltage regulation and high-voltage starting so that the high-voltage power can be suitably controlled, a circuit for near light high-voltage control, a circuit for far light high-voltage control and a DC/AC voltage regulator for providing a low-frequency, square-wave, AC signal for voltage regulation.

Claims

1. A multi-functional high intensity discharge automobile headlamp, comprising:

a circuit for automatic detection and protection, said circuit for automatic detection and protection identifying and switching between a far-light voltage and a near-light signal;

a circuit for DC/DC conversion connected with said circuit for automatic detection and protection, said circuit for DC/DC conversion being connected to a far light and near light switch for increasing said voltage to either a far-light voltage value or a near-light value;

a circuit for voltage regulation and high-voltage starting connected with said circuit for DC/DC conversion, said circuit for voltage regulation and high-voltage starting controlling and restricting a high-voltage power according to a predetermined power;

a circuit for near light high-voltage control connected with said circuit for voltage regulation and high-voltage starting and to said near light and far light switch, said circuit for near light high-voltage control further sending a desired voltage value for a corresponding light bulb and being capable of detecting an anomaly in said near-light bulb and feeding back to said circuit for automatic detection and protection and notifying said circuit for DC/DC conversion to stop supplying power;

a circuit for far light high-voltage control connected with said circuit for voltage regulation and high-voltage starting and to said near light and far light switch, said circuit for far light high-voltage control further sending a desired voltage value for a corresponding light bulb and being capable of detecting an anomaly in said far-light bulb and feeding back to said circuit for automatic detection and protection and notifying said circuit for DC/DC conversion to stop supplying power; and

a DC/AC voltage regulator connected with said circuit for DC/DC conversion, said DC/AC voltage regulator providing a low-frequency square-wave signal that facilitates the control of a light-bulb operation.

2. The multi-functional high intensity discharge automobile headlamp of claim 1 wherein said headlamp is powered by a power supply of an automobile.

3. The multi-functional high intensity discharge automobile headlamp of claim 1 wherein said gas discharge lamp has one light bulb with a near-light filament and a far-light filament.

4. The multi-functional high intensity discharge automobile headlamp of claim 1 wherein said gas discharge lamp has a plurality of near and far light bulbs.