Unlock instant, AI-driven research and patent intelligence for your innovation.

Portable LED (light-emitting diode) lamp

A portable, LED lighting technology, applied in the direction of electric lamp circuit layout, lighting device, light source, etc., can solve the problem that white light LED cannot be directly driven by batteries, etc., to improve luminous brightness and luminous efficiency, minimize cost and size, and occupy space small effect

Active Publication Date: 2012-06-20
XIAMEN DONGANG ILLUMINATION TECH CO LTD
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of them use lithium-ion batteries as their power source. They are about 4.2 volts when fully charged, and about 2.8 volts when they are safely discharged. Obviously, white LEDs cannot be directly driven by batteries.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Portable LED (light-emitting diode) lamp
  • Portable LED (light-emitting diode) lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] The present invention will be further described below in conjunction with accompanying drawing:

[0008] Attached figure 1 As shown, after closing the switch S and turning on the power supply, the emitter of the triode Q1 is connected to the positive pole of the power supply, the resistor R1 and the capacitor C2 are connected in series to the negative pole of the power supply BT, and the voltage across the capacitor C3 cannot be changed suddenly, and the base potential of the triode Q1 is lower than its emission Potential, the transistor Q1 is turned on, the base of the transistor Q2 has current flowing in, the transistor Q2 is also turned on, the current flows from the positive pole of the power supply through the switch S, the inductor L, the collector of the transistor Q2 to the emitter, and flows back to the negative pole of the power supply BT, and the power supply to the inductor L is charged, and the inductor L stores energy. During this process, the self-induce...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a portable LED (light-emitting diode) lamp which is characterized by comprising a direct-current power supply circuit, an LED power drive circuit and an LED illumination circuit, wherein the direct-current power supply circuit consists of a direct-current power supply BT and a switch S which are in serial connection; the LED power drive circuit consists of a triode, an inductor, a capacitor, a resistor and a diode; and the LED illumination circuit consists of five high-brightness LEDs which are in parallel connection. The LED power drive circuit provided by the invention is efficient and compact, peripheral components are less, a printed circuit board is small in occupied space, the minimization of cost and dimension is realized, and system functions and LED light-emitting efficiency are improved maximally.

Description

technical field [0001] The invention relates to the field of electronic lamps, in particular to an LED portable lamp. Background technique [0002] LED lighting has begun to be widely used in various fields. How to save energy and reduce consumption of portable lighting, let a limited energy storage battery prolong the lighting time as much as possible, and fully consider its luminous brightness and efficiency. The use of LED lighting is currently and It is inevitable to develop in the future. Among the similar LED lighting lamps on the market, one type of circuit design is very crude, resulting in low efficiency; the other type of design is too complicated, resulting in many consumables and high cost; the present invention combines the two advantages organically. design production. White LED lighting requires a supply voltage of approximately 3.6 volts for proper brightness control. However, most of them use lithium-ion batteries as the power source. They are about 4.2 vo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H05B37/02
Inventor 陈清尧
Owner XIAMEN DONGANG ILLUMINATION TECH CO LTD