Illumination device

A technology for lighting devices and circuit boards, applied in lighting devices, light sources, electrical components, etc., can solve problems such as electric shock, incomplete connection, and leakage of electricity for users, and achieve the effects of improving efficiency, reducing maintenance costs, and improving reliability

Inactive Publication Date: 2010-03-03
GIGNO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the cold cathode fluorescent lamp 11 is damaged and needs to be replaced and repaired, the driving signal between the connecting terminals 131 and 121 may easily cause the danger of electric shock to the user.
And, between the connecting terminal 131 of the driving circuit board 13 and the connecting terminal 121 of the connecting wire 12, if the connection is not complete during replacement, even when the replacement may cause poor contact through repeated plugging and unplugging, it will also cause arcing or Leakage and other issues

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0058] Please refer to figure 2 As shown, it is a block diagram of the lighting device 2 according to the first embodiment of the present invention. The lighting device 2 of this embodiment can be, for example, an indoor lighting device or an outdoor lighting device. board 21 , a second circuit board 22 and a light emitting unit 23 .

[0059] The first circuit board 21 has a control circuit 211 , a switch circuit 212 and a protection circuit 213 , and the control circuit 211 is electrically connected to the switch circuit 212 and the protection circuit 213 . Wherein, the switching circuit 212 may have a bipolar junction transistor (Bipolar Junction Transistor, BJT) and / or a field effect transistor (Field-Effect Transistor, FET), and the protection circuit 213 is, for example, a short circuit protection (Short Circuit Protection, SCP) circuit. In addition, in this embodiment, the first circuit board 21 also has a rectification circuit 214, however, this is not limitative. T...

no. 2 example

[0085] Please refer to Figure 9 As shown, it is a block diagram of the lighting device 3 according to the second embodiment of the present invention. The difference between the lighting device 3 and the lighting device 2 of the first embodiment is that the first circuit board 31 of the lighting device 3 only has a rectifier circuit 311 , while the second circuit board 32 has a control circuit 321 , a switching circuit 322 and a transformer circuit 323 , the three are electrically connected. The second circuit board 32 is also electrically connected to the first circuit board 31 , and the light emitting unit 33 is electrically connected to the transformer circuit 323 . In addition, in this embodiment, a plurality of second circuit boards 32 and a plurality of light emitting units 33 are taken as examples for illustration, but this is not intended to limit the present invention.

[0086]Therefore, the rectification circuit 311 generates a power signal DC according to the inpu...

no. 3 example

[0091] Please refer to Figure 10 As shown, it is a block diagram of the lighting device 4 according to the third embodiment of the present invention. The difference between the lighting device 4 and the lighting device 2 of the first embodiment is that: the first circuit board 41 of the lighting device 4 has a rectification circuit 411 and a control circuit 412 , which are electrically connected. The second circuit board 42 has a switch circuit 421 and a transformer circuit 422 , both of which are electrically connected. The second circuit board 42 is electrically connected to the first circuit board 41 , and the light emitting unit 43 is also electrically connected to the transformer circuit 422 .

[0092] Therefore, the rectification circuit 411 generates a power signal DC according to the input AC power signal AC, and the control circuit 412 generates at least one control signal P according to the power signal DC. The switching circuit 421 receives the power signal DC, a...

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PUM

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Abstract

The invention relates to an illumination device comprising a first circuit board, a second circuit board and a light-emitting unit, wherein the first circuit board is provided with a control circuit,a switching circuit and a protection circuit, and the control circuit is electrically connected with the switching circuit and the protection circuit; the second circuit board is provided with a voltage transformation circuit and is electrically connected with the first circuit board; and the light-emitting unit is electrically connected with the voltage transformation circuit.

Description

technical field [0001] The invention relates to a lighting device. Background technique [0002] With the progress of the times, various lighting devices have become one of the indispensable electrical appliances in the daily life of ordinary people. No matter what kind of lighting device it is, it needs at least one driving circuit board to provide a driving signal to drive the light emitting unit in the lighting device. Wherein, the light emitting unit is, for example, a cold cathode fluorescent lamp. [0003] Please refer to figure 1 As shown, a conventional lighting device 1 includes a CCFL tube 11 , a connecting wire 12 and a driving circuit board 13 . The cold-cathode fluorescent lamp 11 is electrically connected to a high-voltage-resistant connecting wire 12 having a connecting terminal 121 through electrode terminals 111 and 112 , and then connected to a connecting terminal 131 of the driving circuit board 13 through the connecting terminal 121 of the connecting w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/24
Inventor 萨文志
Owner GIGNO TECH CO LTD
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