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Energy saving LED street lamp

A technology of LED street lamps and LED drivers, which is applied in the directions of energy-saving lighting, energy-saving control technology, and lamp circuit layout.

Inactive Publication Date: 2012-06-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the above-mentioned LED street lamps with intelligent light control circuits only use intelligent light control, and can only be in a fully on or fully off state.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0069] Such as figure 1 As shown, an energy-saving LED street lamp includes an LED drive circuit for driving LED to emit light, a photosensitive sensor circuit, a memory, and a controller. The LED drive circuit, memory, and photosensitive sensor circuit are all electrically connected to the controller, and the LED drive circuit is controlled. The controller control also includes a clock module electrically connected to the controller, and the controller controls the LED driving circuit according to the signal representing the ambient illuminance output by the photosensitive circuit and the signal representing time output by the clock module. The LED drive circuit includes n independent outputs, the LED street lamp is divided into n LED groups, and each independent output drives one LED group. In this embodiment, n is 4.

[0070] Such as image 3 As shown, a lamp body 6 has built-in 12 rows×10 columns of LED7, if the power of each LED is 1W, then the power of the whole LED st...

Embodiment 2

[0086] Compared with Embodiment 1, the difference is that this embodiment adds a solar power supply module, and its structural schematic block diagram is as follows figure 2 As shown, the solar power supply module is electrically connected to the LED drive circuit, the solar power supply module is electrically connected to the controller, and all components that need power supply for the energy-saving LED street lamp are powered by the solar power supply module. The controller also controls the LED driving circuit according to the electricity stored in the solar power supply module.

[0087] In this embodiment, the first illuminance threshold is 1lx, the second illuminance threshold is 5lx, the third illuminance threshold is 10lx, the fourth illuminance threshold is 15lx, the first time threshold is 23 o'clock, and the second time threshold is 20 o'clock; Figure 5 , Figure 6 As shown, the control method of the controller to the LED drive circuit is as follows:

[0088] (A...

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Abstract

The invention discloses an energy saving LED street lamp which comprises an LED drive circuit used for driving an LED to emit light, a photosensitive induction circuit, a controller and a clock module which is electrically connected with the controller. The controller controls the LED drive circuit according to a signal representing environment illumination which is outputted by the photosensitive induction circuit and a signal representing time which is outputted by the clock module. The energy saving LED street lamp also comprises a solar energy power supply module. All parts needing to be powered of the energy saving LED street lamp are powered by the solar energy power supply module. The controller controls the LED drive circuit according to electric quantity stored by the solar energy power supply module. A control method with combination of light control and time control is employed, and the energy saving LED street lamp is more energy-efficient. When extreme weather such as sudden darkness at noon appears, according to the invention, response can be given immediately and the LED street lamp is lightened immediately, and inconvenience of people life caused by the extreme weather is reduced.

Description

[0001] This application is a divisional application, the original application date is September 21, 2010, the application number is 201010291226.3, and the name is "an energy-saving LED street lamp". technical field [0002] The invention relates to an LED street lamp. Background technique [0003] With the continuous consumption of energy and the increasing scarcity of resources, the international call for energy saving and consumption reduction is getting louder and louder. my country's outdoor road lighting accounts for about 30% of the total lighting electricity consumption, which is closely related to people's production and life. As an important application of outdoor lighting, LED street lights have the following advantages: [0004] 1. The service life of high-power LED street lamps is long, up to 50,000-100,000 hours; [0005] 2. The uniformity of the light irradiation surface is controllable, and it can be completely uniform in the target area in theory, which ca...

Claims

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Application Information

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IPC IPC(8): H05B37/02
CPCY02B20/42Y02B20/40Y02B20/46Y02B20/72
Inventor 池水莲刘雪梅高亚妮戈明亮
Owner SOUTH CHINA UNIV OF TECH
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