1. Technical Field
The present disclosure relates to a fixed base and a lighting device utilizing the fixed base.
2. Description of Related Art
Light emitting diode (LED) is widely used in various lighting devices. When the LED is disabled, users must replace the disabled LED with a new LED. However, configuration of the lighting device is complicated, and so is replacing the disabled LED.
Therefore, what is needed is a fixed base to overcome the shortcoming described.
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The inner canister 211 includes a bottom plate 215 and a wall 216 encircling the bottom plate 215. An outer end (not labeled) of the inner canister 211 protrudes from the top plate 212, and the inner end (not labeled) of the inner canister 211 is located inside of the outer canister 210. Axially, the thickness of the outer end exceeds that of the inner end. Three first through holes 217 are defined in the bottom plate 215. Two opposite rectangular hatches 218 are defined in the wall 216 along an axial direction of the inner canister 211. The three first through holes 217 and the two hatches 218 communicate with the receiving room 214. The width of each of the hatches 218 slightly exceeds the diameter of each of the two poles 13 in the circumferential direction of the wall 216. Three nuts 219 are set in one side of the bottom plate 215 towards the receiving room 214, and are column-shaped. A first guiding groove 220, a second guiding groove 221, and a third guiding groove 222 are formed in the inner surface of the top plate 212. The second guiding groove 221 and the third guiding groove 222 are located in the inside of the first guiding groove 220, and the second guiding groove 221 and the third guiding groove 222 are opposite each other and located in two sides of the inner canister 211. A P-shaped positioning component 223 is formed on one side of the second guiding groove 221. A protrusion 224 extends from a curved side of the positioning component 223. Two second nuts 225 are set on both sides of the third guiding groove 222 respectively.
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The touch component 26 includes a substrate plate 260 and three touch poles 261 mounted on the substrate plate 260. The three touch poles 261 are made of the conductive material, and are electronically connected to the substrate plate 260. The diameter of each of the three touch poles 261 is slightly less than the diameter of each of the three first through holes 217. Three semicircular cutouts 262 are defined in the edge of the substrate plate 260. The diameter of each of the three cutouts 262 approximately equals to the diameter of each of the three first nuts 219. The thickness of the substrate plate 260 is less than the height of each of the three first nuts 219 along an axial direction of the touch pole 260.
The circuit board 27 is a square board. An elastic trigger switch 270 and a connecting component 271 are set in the circuit board 27. A control circuit 273 is also set in the circuit board 27, and is electronically connected to the trigger switch 270 and the connecting component 271. The trigger switch 270 is configured for elastically compressing the circuit board 27 and generating a trigger signal to the control circuit 273 when receiving a pressure whose value exceeds a predetermined value. In the exemplary embodiment, the connecting component 271 is a flexible circuit board. Three second threaded holes 272 are defined in the circuit board 27, and are passed through the circuit board 27.
The lower cover 28 is a circular plate, and the diameter of the lower cover 28 approximately equals the diameter of the receiving room 214. Three third threaded holes 280 are defined in the lower cover 28, and are passed through the lower cover 28.
Referring to
When inserting the support column pole 12 of the lighting member 10 into the inner canister 211, the hook pole 13 is inserted into the sliding groove 234 along the hatch 218, so that, the three electrodes 14 touch the touch pole 260 and press the touch pole 260. Pressure from the substrate plate 260 is exerted to compress the trigger switch 270 whereupon the trigger switch 270 compresses the circuit board 27 and generates a trigger signal to the control circuit 273. The control circuit 27 exerts a control current to the magnetic portion 246 of the driver 24 in a predetermined time so that the magnetic portion 246 adjacent to the outer shell 240 and magnetic end of the outer shell 240, match. Moreover, the driving portion 247 extends out of the hatch 244 via repulsive electromagnetic force, and the two reset springs 242 are compressed by the magnetic portion 246. The connecting block 232 of the limitation frame 23 is pushed by the driving portion 247 towards the second guiding groove 221, the fixing groove 235 is engaged with the hook pole 13, and the positioning bar 236 is meshed with the protrusion 224, so that, the lighting member 10 is attached to the fixed base 20. Simultaneously, the control circuit 273 exerts a current to the electrode 14 by the touch pole 260 to make the luminophor 11 light up. When the lit time of the luminophor 11 exceeds a predetermined time, the control circuit 273 stops providing current for the magnetic portion 246, and results in the disappearance of repulsive electromagnetic force between the magnetic portion 246 and the magnetic end of the outer shell 240, so that the magnetic portion 246 draws the magnetic end of the outer shell 240 by pressure from the two reset springs 242, and the driving portion 247 returns inside the outer shell 240 via the hatch 244.
Because a curved chamfer is formed at a junction between the sliding groove 234 and the fixing groove 235, when rejecting the support column pole 12 from the fixed base 20, the hook pole 13 is slid from the fixing groove 235 to the sliding groove 234, and ejected via the hatch 218. Simultaneously, the frame body 230 of the limitation frame 23 is extruded by the hook pole 13, and starts to move toward the driver 24, and the positioning bar 236 returns to its original position, completing a cycle.
Although the present disclosure has been specifically described on the basis of the embodiments thereof, the disclosure is not to be construed as being limited thereto. Various changes or modifications may be made to the embodiments without departing from the scope and spirit of the disclosure.
Number | Date | Country | Kind |
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2009 1 0304036 | Jul 2009 | CN | national |
Number | Name | Date | Kind |
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5669703 | Wheeler et al. | Sep 1997 | A |
6976776 | Kakidaira et al. | Dec 2005 | B2 |
7905626 | Shantha et al. | Mar 2011 | B2 |
Number | Date | Country | |
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20110002130 A1 | Jan 2011 | US |