Patent Application
20070070631
1. Field of the Invention
The present invention relates to lamps and more particularly, to a LED lamp tube that can directly be installed in a conventional lamp holder.
2. Description of the Related Art
The invention of lamp changes the living style of human beings. Without lamp, we cannot work at night or in the dark, and the living standard of human beings will stay in the level of the old time.
Commercial lighting fixtures commonly use fluorescent lamps, incandescent lamps, or the so-called power-saving lamps to give off light for illumination. These lighting fixtures have the common drawbacks of high power consumption, quick light attenuation, short service life, fragile characteristic, and being not reclaimable. Further, during the operation of a fluorescent lamp, electric current passes through the electrodes at a high frequency about 120 times per second, causing sparkling of light that is harmful to the eyes. In order to eliminate this problem, a high-frequency electronic ballast may be used. The use of a high-frequency electronic ballast in a fluorescent lamp saves power consumption and stabilizes the electric current, preventing the problem of sparkling of light. However, the high-frequency electronic ballast of a fluorescent lamp is not detachable. When the fluorescent lamp is damaged, the high-frequency electronic ballast cannot be removed from the fluorescent lamp for a repeat use. Further, because conventional fluorescent lamps have a mercury coating coated on the inside wall of the respective lamp tube, the used fluorescent lamps must be properly disposed of to prevent pollution to the environment.
The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a LED lamp tube, which is directly connectable to a conventional lamp holder. It is another object of the present invention to provide a LED lamp tube, which has the advantages of quick reaction time, small size, low power consumption, low pollution, high brightness, and long service life. To achieve these and other objects of the present invention, the LED lamp tube comprises a tubular shell, a circuit board mounted in the tubular shell, arrays of LEDs (light emitting diodes) installed in the circuit board inside the tubular shell, and two electric connectors respectively electrically connected to the two distal ends of the circuit board and respectively extending out of the tubular shell for connection to a respective connecting holes of the conventional lamp holder to obtain the necessary working voltage from the lamp holder for the circuit board and the LEDs.
Referring to
After connection of the electric connectors 12 to the respective connecting holes 21 of the lamp holder 2, the circuit board 1 can obtain the necessary working voltage from the lamp holder 2 to drive the LEDs 11, causing the LEDs 11 to give off light.
Further, the circuit board 1 may be made in any of a variety of other shapes and with the electric connectors 12 to fit any of a variety of other different conventional lamp holders 2 for use as a desk lamp, cabinet lamp, car lamp, etc.
Referring to
As indicated above, the present invention provides a LED lamp tube, which is comprised of a tubular shell 3 that admits light, a circuit board 1 mounted inside the tubular shell 3, and two electric connectors 12 electrically connected to the circuit board 1 and respectively extending out of the two distal ends of the tubular shell 3 for connection to the respective connecting holes 21 of a conventional lamp holder 2. Because the invention uses LEDs to give off light, the LED lamp tube of the invention has the advantages of quick reaction time, small size, low power consumption, low pollution, high brightness, and long service life.
Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention.
