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LED (light-emitting diode) advertising lamp box light source based on 220V AC (alternating current) power supply

A technology of advertising light boxes and alternating current, applied in the direction of electric light sources, electric light sources, light sources, etc., can solve the problem that LED light boxes cannot be directly connected to 220V alternating current, and achieve the effect of cost increase

Active Publication Date: 2015-04-15
BLUEVIEW ELEC OPTIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a LED advertising light box light source based on 220V AC, which mainly solves the problem that the LED light box cannot be directly connected to 220V AC in the prior art

Method used

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  • LED (light-emitting diode) advertising lamp box light source based on 220V AC (alternating current) power supply
  • LED (light-emitting diode) advertising lamp box light source based on 220V AC (alternating current) power supply
  • LED (light-emitting diode) advertising lamp box light source based on 220V AC (alternating current) power supply

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Embodiment

[0025] Such as figure 2 , image 3 As shown, the LED advertising light box light source based on 220V AC is mainly composed of LED advertising light box power supply and PVC shell, among which, LED advertising light box power supply includes varistor R1 and rectifier that form a circuit with LED, connector, and three-point line card cover. D1 and constant current diode D2, and an electrolytic capacitor C1 connected in parallel with the LED is set in the loop; the three-point line card cover is connected to the external 220V AC at the same time. In addition, in this embodiment, a small number of auxiliary electrical devices are also configured to cooperate with the above-mentioned main components to realize the function of the power circuit. The matching devices belong to common knowledge and will not be described in detail here.

[0026] In the embodiment, the PVC shell belongs to a design point of the present invention, and it is made up of PVC through-slot, PVC plug and P...

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Abstract

The invention discloses an LED (light-emitting diode) advertising lamp box light source based on a 220V AC (alternating current) power supply, mainly solving the problem that the existing LED advertising lamp box light source can not be directly connected with an external 220V AC power supply. The LED advertising lamp box light source based on a 220V AC power supply is characterized by comprising an LED advertising lamp box power supply and a PVC (polyvinyl chloride) shell for encapsulating the LED advertising lamp box power supply; the LED advertising lamp box power supply comprises an aluminum-based circuit board and a power supply circuit which is arranged on the aluminum-based circuit board and directly connected with a 220V AC power supply through a connector; and the power supply circuit comprises a piezoresistor R1, a rectifier D1 and a current regulative diode D2, the piezoresistor R1, the rectifier D1 and the current regulative diode D2 form a circuit with an LED and an external 220V AC power supply, and a electrolytic capacitor C1 connected in parallel with an LED is arranged in the circuit. Through the scheme, the purpose of directly connecting an external 220V power supply is achieved, the problem of voltage attenuation is avoided, the waterproof effect is guaranteed, and the LED (light-emitting diode) advertising lamp box light source has a high practical value and a high popularization value.

Description

technical field [0001] The invention relates to a kind of LED advertising light box light source based on 220V alternating current in particular. Background technique [0002] At present, most of the light box light sources used in the advertising signage industry use LED light sources to replace traditional light sources such as fluorescent lamps. These LED light sources all adopt the technical scheme of separating the low-voltage DC power supply from the LED light-emitting components, such as figure 1 ; This technical scheme mainly has the following problems: [0003] The LED driving voltage is low-voltage direct current, which requires the LED light source in the light box to be equipped with a separate direct current power supply. Due to the problem of voltage drop, the transmission distance of the LED power supply is short and the voltage attenuation is large; if a waterproof power supply is used, the cost will be greatly increased. Moreover, due to the current q...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S8/00F21V23/00F21V31/00G09F13/04H05B37/02F21Y101/02
Inventor 李忠训
Owner BLUEVIEW ELEC OPTIC TECH CO LTD
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