1. Field of Invention
The invention relates to a light bar and, in particular, to an LED light bar with a replaceable power source structure.
2. Related Art
When the above-mentioned conventional light bar starts, the power supply 94 at the end portion of the lamp 91 supplies the electrical power. Although the LED has the features of power-saving and long lifetime, the risk for the electronic elements in the power supply 94 to fail is difficult to estimate. Its lifetime cannot match with that of the lamp 91. Therefore, when the power supply 94 fails, one has to replace the entire set of light bar. This is a waste.
As shown in
Suppose the two fluorescent lamps start and take the LED light bar A as an example. The input terminals 96 of its power source have the voltage in the waveforms shown in
However, when the two fluorescent lamps are replaced by lamps of other specifications, the new ones cannot be lit up. If current energy-saving LED light bars are used, the voltages curves are shown in
It is thus an objective of the invention to solve the above-mentioned problem with the LED light bars.
An objective of the invention is to provide an LED light bar with a replaceable power source. This achieves the goal of making full use of the LED light bar and saving costs.
Another objective of the invention is to make the LED light bar with capacitors applicable to all kinds of preheat electronic ballast. It has a stable voltage input.
To achieve the above objectives, the invention includes: a LED lamp installed on a base with a heat-dissipating stricture; a lampshade covering the lamp from the base, and a connector electrically connected to the lamp base on each of the two ends of the base.
The invention is further characterized in that the connector on one end of the base is provided with a power supply. The base has connector base for the power supply on that end. The power supply and the connector base can be fixed units that can be separated and assembled. They have quick-connect terminals for the power supply to electrically connect to the lamp. The connectors on both ends of the base have a first terminal and a second terminal, respectively. The first terminal of each of the connectors electrically connects to the corresponding electrode on the power supply. The two second terminals are connected in series with a capacitor for stabilizing the voltage.
The invention will become more fully understood from the detailed description given herein below illustration only, and thus is not limitative of the present invention, and wherein:
The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements.
Please refer to
This embodiment provides an LED light bar with a replaceable power source. It includes a base 1 and a power supply.
The base 1 has a heat-dissipating structure 11 and is disposed with a lamp 12. The lamp 12 uses an LED 121 as its light-emitting element. A lampshade 13 covers the lamp 12 from the base 1. Each of the two ends of the base 1 has a connector 14 electrically connected to the lamp base.
The power supply 2 is disposed at the connector 14 on one end of the base 1. The base 1 also has a connector base 3 on that end for the power supply 2 to mount and connect. Moreover, a fixing unit 4 is disposed between the power supply 2 and the connector base 3. The fixing unit 4 enables the two parts to be quickly separated or assembled.
The fixing unit 4 in this embodiment is also shown in
As shown in
Besides, the power supply 2 has a quick-connect terminal 211, and the connector base 3 also has a quick-connect terminal 32. After the power supply and the connector base are assembled together, the connection of the quick-connect terminal 211 and the quick-connect terminal 32 enables the power supply 2 to electrically connect and provide power to the lamp 12.
In this embodiment, the power supply 2 is covered with a cover 21. The quick-connect terminal 211 of the power supply 2 is provided on the cover 21 and electrically connects to the quick-connect terminal 32 of the connector base 3. One of the quick-connect terminals 32 of the cover 21 and the connector base 3 is male, and the other is female to be connected together. In this embodiment, the quick-connect terminal 211 of the cover 21 is male, and the quick-connect terminal 32 on the connector base 3 is female.
The connectors 14 on both ends of the base 1 have respectively a first terminal 141 and a second terminal 142. The first terminal 141 of each connector electrically connects to an AC power source. Capacitors 6 for stabilizing voltage are connected between the two second terminals 142.
As shown in
According to the above structure, when the power supply 2 of the disclosed LED light bar fails, one only needs to take off the power supply 2 and replace it with a new part. In comparison with the LED light bar in the prior art, the invention is more cost-effective.
Moreover, the disclosed LED light bar has capacitors 6. As shown in
Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to people skilled in the art. Therefore, it is contemplated that the appended claims will cover all modifications that fall within the true scope of the invention.
Number | Date | Country | Kind |
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098210072 | Jun 2009 | TW | national |