CN201935000U

CN201935000U - Dimming-scalable light-emitting diode (LED) bulb lamp

Info

Publication number: CN201935000U
Application number: CN2011200096294U
Authority: CN
Inventors: 钱江涛; 池春蕾; 胡初平; 汤丹英
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-13
Filing date: 2011-01-13
Publication date: 2011-08-17
Anticipated expiration: 2021-01-13

Abstract

The utility model discloses a dimming-scalable light-emitting diode (LED) bulb lamp, which comprises a power supply interface of a common carrier dimming signal, a dimming-scalable drive power supply, an LED light source, a heat dissipation body and a light-transmitting cover, and is characterized in that: the power supply interface is connected with the dimming-scalable drive power supply, and the dimming-scalable drive power supply is connected with the LED light source; and the LED light source and the light-transmitting cover are fixed on the heat dissipation body. The dimming-scalable drive power supply controls values of current flowing through the LED light source to realize the scalable dimming of the LED bulb lamp; the dimming signals are completely generated by a power supply switch, so the dimming can be realized without adding any external dimming circuit and device; and a dimming method is simple, and the beam is soft and does not flicker.

Description

A kind of LED bulb lamp of gradable light modulation

Technical field

The utility model relates to a kind of LED lamp device, particularly a kind of LED bulb lamp of gradable light modulation.

Background technology

Along with the continuous lifting of global energy shortage and environmental pollution, energy-conservation and environmental protection has become the imperative problem that needs solution of current society.In recent years, illuminating LED is at cost, and aspect of performance has had very big improvement, compare with conventional light source, it is long that the LED lighting all has the life-span, preferably drive characteristic, start-up time is short, and advantage such as sound construction, has great importance for environment and energy savings.In using the led light source illumination, under environment, can use different brightness, improve people's quality of life, and saved the energy.

Yet the LED bulb lamp of prior art exploitation at present is owing in the use of power supply, exist inefficient problem, light modulating device needs to increase in addition, so also there is certain defective, increased the difficulty of arranging is installed, and owing to be that other feeder apparatus is controlled, light instability, integral body are energy-conservation inadequately.

Summary of the invention

For solving the problems of the technologies described above, the utility model provides a kind of LED bulb lamp of gradable light modulation, only depends on power switch just can realize incremental dimming, stable performance, whole energy, and system maintenance is simple.

The utility model is to realize by following technical scheme:

A kind of LED bulb lamp of gradable light modulation, comprise and carry dim signal power interface, incremental dimming driving power, led light source, radiator and diffuser altogether, the described dim signal power interface that carries altogether connects the incremental dimming driving power, described incremental dimming driving power connects led light source, and described led light source and diffuser are fixed on the radiator.

Described incremental dimming driving power comprises input EMI filtration module, bridge rectifier filtration module, dim signal acquisition module, PWM dim signal control module, constant-current supply administration module, and described input EMI filtration module connects described dim signal power interface, bridge rectifier filtration module and the dim signal acquisition module of carrying altogether; Described bridge rectifier filtration module connects constant-current supply administration module and PWM dim signal control module; Described dim signal acquisition module, PWM dim signal control module are connected successively with the constant-current supply administration module; Described constant-current supply administration module connects led light source.

Describedly carry the AC90-240V AC power input interface that the dim signal power interface is the full voltage formula altogether.

The beneficial effects of the utility model are: the mode of light modulation is simple, the switch input ac power gets final product, wiring is simple, do not need to increase incoming line, without any need for voltage adjusting device, the same with traditional incandescent lamp circuit, the simple light fixture of changing can be realized light modulation, stable performance, whole energy, system maintenance is simple.

Description of drawings

Fig. 1 is the light modulation theory diagram of the LED bulb lamp of a kind of gradable light modulation of the utility model

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described further.

As Fig. 1, it is the light modulation theory diagram of the LED bulb lamp of a kind of gradable light modulation of the utility model, comprise and carry dim signal power interface 1, incremental dimming driving power 10, led light source 7, radiator 8 and diffuser 9 altogether, carry dim signal power interface 1 altogether and connect incremental dimming driving power 10, incremental dimming driving power 10 connects led light source 7, and led light source 7 and diffuser 9 are fixed on the radiator 8.

Wherein incremental dimming driving power 10 comprises input EMI filtration module 2, bridge rectifier filtration module 3, dim signal acquisition module 4, PWM dim signal control module 5, constant-current supply administration module 6, and dim signal power interface 1, bridge rectifier filtration module 3 and dim signal acquisition module 4 are carried in 2 connections of input EMI filtration module altogether; Bridge rectifier filtration module 3 connects constant-current supply administration module 6 and PWM dim signal control module 5, and level and smooth voltage source is provided; Dim signal acquisition module 4, PWM dim signal control module 5 are connected successively with constant-current supply administration module 6, and dim signal acquisition module 4 offers PWM dim signal control module 5 to the light modulation information on the input power cord; Constant-current supply administration module 6 connects led light source 7.

Carry dim signal power interface 1 altogether and be AC90-240V AC power input interface through the full voltage formula behind the power switch, dim signal for disconnect to exchange input time greater than 9 times to the input ac power cycle, less than 64 times of behaviors to the input ac power cycle.

In the utility model, described dim signal is gathered the frequency that mould 4 is gathered AC power, the number of times information that time that power supply disconnects and short time disconnect.When detect input ac power turn-off time little 7 times to the input ac power cycle, judge that this off voltage does not have dimming function.When detect AC power turn-off time greater than 8 times to the input ac power cycle and less than 64 times to the input ac power cycle, then be judged to be an effective dim signal.When detect AC power turn-off time greater than 64 times to the input ac power cycle, judge that then this off voltage signal is a reset signal.The dutycycle that is the PWM dim signal returns to 87.5%.Light fixture powers on first, PWM dim signal control module 5 produces the constant-current supply administration module 6 that dutycycles are PWM dim signal control band PWM dimming functions of 87.5%, make the electric current that flows through the integrated COB encapsulated LED of small-power light source 7 for the constant-current supply administration module 6 of band PWM dimming function set 87.5%, when dim signal acquisition module 4 detected for the first time dim signal, PWM dim signal control module 5 was adjusted to 50% with PWM dim signal dutycycle.When detecting effective dim signal once more, PWM dim signal dutycycle is adjusted to 25%, when detecting effective dim signal for the third time, the rule that PWM dim signal dutycycle is adjusted to dutycycle circulation change under the effect of dim signal of 12.5%.PWM dim signal is: 87.5%-50%-25%-12.5%-25%-50%-87.5%.......The constant-current supply administration module 6 of dim signal control band PWM dimming function is with 87.5%, 50%, 25%, 12.5% current setting value drives the integrated COB encapsulated LED of small-power light source 7, thereby realize dividing level Four (high-high brightness to the brightness of COB bulb lamp, 4/7 brightness, 2/7 brightness, 1/7 brightness) brightness adjustment control circulates.Bulb lamp sends soft, uniform light.

The constant-current supply administration module 6 of described band PWM dimming function is for can accept the pwm signal dim signal; and determine the current value of load accurately according to different PWM dutycycles; working stability; the conversion efficiency height, it is under-voltage to have an input voltage, overvoltage protection; output open circuit; short circuit, overload protection, high temperature protection function.

Light modulation principle of the present utility model is, dim signal acquisition module 4 is gathered the dim signal that carries altogether in the AC power input, dim signal is offered PWM dim signal control module 5, PWM dim signal control module 5 produces the constant-current supply administration module 6 that a corresponding PWM dim signal removes to control band PWM dimming function, thereby realize the light modulation of bulb lamp, reach the most comfortable, the illuminating effect of power saving.

Claims

1. the LED bulb lamp of a gradable light modulation, comprise and carry dim signal power interface, incremental dimming driving power, led light source, radiator and diffuser altogether, it is characterized in that the described dim signal power interface that carries altogether connects the incremental dimming driving power, described incremental dimming driving power connects led light source, and described led light source led light source and diffuser are fixed on the radiator.

2. the LED bulb lamp of a kind of gradable light modulation as claimed in claim 1, it is characterized in that described incremental dimming driving power comprises input EMI filtration module, bridge rectifier filtration module, dim signal acquisition module, PWM dim signal control module, constant-current supply administration module, described input EMI filtration module connects described dim signal power interface, bridge rectifier filtration module and the dim signal acquisition module of carrying altogether; Described bridge rectifier filtration module connects constant-current supply administration module and PWM dim signal control module; Described dim signal acquisition module, PWM dim signal control module are connected successively with the constant-current supply administration module; Described constant-current supply administration module connects led light source.

3. the LED bulb lamp of a kind of gradable light modulation as claimed in claim 1 is characterized in that the described AC90-240V AC power input interface that the dim signal power interface is the full voltage formula that carries altogether.