Constant current LED module
A technology of LED modules and LED light strings, applied in the electronic field, can solve the problems of low efficiency, voltage attenuation, and wire blocking LED light emission, etc., and achieve the effects of high LED luminous efficiency, extended service life, and beautiful appearance
Inactive Publication Date: 2010-12-22
李忠训
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Problems solved by technology
At present, the products on the market are all constant voltage type. Basically, there are only resistors in the circuit except for the LED. When the voltage is low or the series connection is relatively long, the voltage of the LED module at the tail will decay, resulting in a small LED current and insufficient brightness. , and the efficiency is low, affecting the use effect
And the method of soldering wires on the printed circuit board (PCB) causes the wires to block the LED light
Method used
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Embodiment Construction
[0016] Below in conjunction with embodiment the present invention is further described.
[0017] Such as Figure 1-4 , constant current LED module, including shell 1, printed circuit board 2, LED light string Dn, positive lead M, negative lead N, also includes constant current driver U, resistor R and capacitor C, negative and constant of LED light string Dn The input terminal UI of the current driver U is connected, its output terminal Uo is grounded, and the reference terminal UR is connected to the resistor R; the negative electrode parallel capacitor C of the LED light string Dn is grounded; the positive electrode lead M and the negative electrode lead N are placed behind the printed circuit board 2, and Embedded in the bottom plate of the casing 1, the printed circuit board 2 is provided with a positive screw hole 3 and a negative screw hole 4, which are electrically connected with the positive lead M and the negative lead N through the screws 5, respectively.
[0018] T...
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The invention discloses a constant current LED module, belonging to the field of electronic technology. The constant current LED module comprises a shell, a printed circuit board, an LED light chain, a positive wire, a negative wire, a constant current driver, a resistor and a capacitor, wherein the negative pole of the LED light chain is connected with the input end of the constant current driver, the output end of the constant current driver is earthed, and the reference end of the constant current driver is connected with the resistor; the negative pole of the LED light chain is connected in series with the capacitor and is earthed; the positive wire and the negative wire are arranged behind the printed circuit board and embedded in the bottom plate of the shell; and a positive screw hole and a negative screw hole are arranged on the printed circuit board and are respectively connected with the positive wire and the negative wire through screws electrically. In the invention, each path of LEDs has consistent current, front and back modules has consistent brightness, LEDs have high light emitting efficiency, and the service life of the LED module is prolonged.
Description
Technical field [0001] The invention relates to an LED lamp, in particular to an LED module, and belongs to the technical field of electronics. Background technique [0002] At present, the LED module is a product composed of LEDs (light-emitting diodes) arranged together according to certain rules and then packaged together, plus some waterproof treatment. At present, the products on the market are all constant voltage type. Basically, there are only resistors in the circuit except the LED. When the voltage is low or the series connection is long, the voltage of the LED module at the tail will decay, resulting in a small LED current and insufficient brightness. , and the efficiency is low, affecting the use effect. In addition, the method of soldering wires on the printed circuit board (PCB) causes the wires to block the LED from emitting light. Contents of the invention [0003] In order to overcome the above disadvantages of the existing LED modules, the present inven...
Claims
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IPC IPC(8): F21S2/00F21V23/02F21V23/06H05B37/02F21Y101/02
Inventor 李忠训
Owner 李忠训