CN202998600U

CN202998600U - LED dimming lamp

Info

Publication number: CN202998600U
Application number: CN201220710502XU
Authority: CN
Inventors: 胡为龙; 应学勤
Original assignee: BEIJING JISHAN LIGHTING TECHNOLOGY Co Ltd
Current assignee: BEIJING JISHAN LIGHTING TECHNOLOGY Co Ltd
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2013-06-12
Anticipated expiration: 2022-12-20

Abstract

Disclosed in the utility model is an LED dimming lamp that comprises an LED driver chip, an LED lamp, a driving sequential circuit for continuous dimming, a driving circuit for driving the LED lamp, and a power supply circuit. The output terminal of the driving sequential circuit is connected with the LED driver chip; and the output terminal of the LED driver chip is connected with the driving circuit. Besides, the LED dimming lamp also includes a continuous switch module connected with the power supply circuit. According to the LED dimming lamp provided by the utility model, a capacitor is used to realize working state memory and only a common switch is used to realize dimming, so that there is no modification cost and the dimming function can be realized only by replacing the original lamp fixture. Moreover, the dimming can be realized only by remotely controlling the power supply state of the LED dimming lamp, thereby substantially simplifying the construction cost of the illuminating system and thus achieving an objective energy conservation and consumption reduction. And the provided LED dimming lamp that is designed ingeniously and can be realized easily has a good application prospect.

Description

A kind of LED desk lamp with dimmer switch

Technical field

The utility model relates to the LED lighting technical field, is specifically related to a kind of LED desk lamp with dimmer switch.

Background technology

Current energy scarcity is the Tough questions that All Around The World faces, China both the central and local governments all pay much attention to, and adopt various means to carry out major fields energy-conservation, wherein, electric consumption on lighting accounts for 10% of China's gross generation, and reducing the electric consumption on lighting amount is the important means of saving energy and reduce the cost.At present, mainly have the illuminating product of high light efficiency, low power consuming by wideling popularize LED etc. in China, and progressively eliminate the contour energy-consuming product of incandescent lamp, reach energy-saving and cost-reducing target.

Because the LED light fixture has digital controllability, can realize easily the light modulation of LED lamp, like this in the place that does not need to become clear very much, can reduce brightness, rather than open simply or close, so further reduction electric consumption on lighting, but LED lamp common in prior art is as realizing light modulation, have following three problems, the first, LED lamp need to increase light adjusting circuit; The second, needing increases control circuit, carries out track remodelling, and cost of labor, material cost all will increase; The 3rd, need to increase dimmer, dimmer is installed needs again cost of labor and material cost, and, for the situation that most dimmers and controllable silicon LED desk lamp with dimmer switch coordinate, in the light modulation of controllable silicon LED desk lamp with dimmer switch during to low-light level, all have flicker in various degree, affect lighting quality.

The utility model content

In order to solve the problem that occurs when in prior art, the LED lamp is realized light modulation.The LED desk lamp with dimmer switch that the utility model provides, by electric capacity memory work state or increase continuous switch module and just can realize light modulation, there is no improvement cost, and as long as having or not of the power supply of Long-distance Control LED desk lamp with dimmer switch just can realize light modulation, greatly simplify the construction cost of illuminator, thereby reach energy-saving and cost-reducing target, design novelly, easily realize, have a good application prospect.

In order to arrive above-mentioned purpose, technical solution adopted in the utility model is:

A kind of LED desk lamp with dimmer switch, comprise that LED drives chip and LED lamp, it is characterized in that: also comprise time sequence driving circuit for continuous light tuning, be used for the drive circuit of driving LED lamp, the output of described time sequence driving circuit drives chip with LED and is connected, and the output that described LED drives chip is connected with drive circuit.

Aforesaid a kind of LED desk lamp with dimmer switch is characterized in that: also comprise with LED driving the detection external voltage circuit that chip is connected.

Aforesaid a kind of LED desk lamp with dimmer switch, it is characterized in that: also comprise power circuit, described power circuit comprises rectifier circuit, the external power supply source of the input of described rectifier circuit, the output of rectifier circuit drive chip with LED respectively, time sequence driving circuit is connected with the drive circuit power input.

Aforesaid a kind of LED desk lamp with dimmer switch is characterized in that: also comprise the continuous switch module that is connected with power circuit.

Aforesaid a kind of LED desk lamp with dimmer switch is characterized in that: described time sequence driving circuit comprises capacitor C 3 and resistance R 3, and described capacitor C 3 and resistance R 3 are connected in parallel on the CLK pin of LED driving chip.

Aforesaid a kind of LED desk lamp with dimmer switch, it is characterized in that: described drive circuit comprises that driving mos manages Q1 and transformer T1, the grid of described mos pipe Q1 is connected with the output that LED drives chip, the source electrode of the grid of described mos pipe Q1 is connected with the end of transformer T1, the end of described transformer T1 is as the output of drive circuit, be connected with the LED lamp, described transformer T1 also is provided with for the tap of adjusting output voltage, and is connected with the ZCD pin that LED drives chip by resistance R 4.

The beneficial effects of the utility model are: the LED desk lamp with dimmer switch that the utility model provides, can reach energy-saving and cost-reducing target, and have following characteristics,

(1) can only realize LED lamp dimming function by continuous switch module, can also drive chip by LED and realize dimming function, it is convenient to select, and greatly reduces expense and the operating expenses of track remodelling, is convenient to the popularization of LED desk lamp with dimmer switch;

(2) energy-conserving and environment-protective can not appear at the problem that has stroboscopic when the light modulation ratio is hanged down;

(3) adopt continuous light tuning blast mode gradually, meet human eye to the requirement of the light adaptation of surround lighting.

Description of drawings

Fig. 1 is the system block diagram of LED desk lamp with dimmer switch of the present utility model.

Fig. 2 is the cut-away view that LED of the present utility model drives chip.

Fig. 3 is that LED of the present utility model drives chip, time sequence driving circuit and the mutual connecting circuit schematic diagram of drive circuit.

Embodiment

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

as Fig. 1, Fig. 2 and shown in Figure 3, LED desk lamp with dimmer switch of the present utility model, comprise power circuit, LED drives chip and LED lamp, the time sequence driving circuit that is used for continuous light tuning, the drive circuit that is used for the driving LED lamp, power circuit comprises rectifier circuit, the external power supply source of the input of described rectifier circuit, the output of rectifier circuit drives chip with LED respectively, time sequence driving circuit is connected with the drive circuit power input, the output of time sequence driving circuit drives chip with LED and is connected, the output that LED drives chip is connected with drive circuit, wherein time sequence driving circuit comprises capacitor C 3 and resistance R 3, described capacitor C 3 and resistance R 3 are connected in parallel on the CLK pin of LED driving chip, drive circuit comprises that driving mos manages Q1 and transformer T1, the grid of mos pipe Q1 is connected with the output that LED drives chip, the source electrode of the grid of mos pipe Q1 is connected with the end of transformer T1, the end of transformer T1 is as the output of drive circuit, be connected with the LED lamp, transformer T1 also is provided with for the tap of adjusting output voltage, and be connected with the ZCD pin that LED drives chip by resistance R 4, wherein LED drives function such as the following table 1 of each pin of chip:

Table 1 LED drives each pin function table of chip

The pin title	I/O	Number of pins	Describe
				CLK	Input	1	Access resistor voltage divider circuit after rectifier bridge, realize continuous light tuning
COMP	Output	2	Error amplifier output is directly placed compensating circuit one at COMP and GND stable frequency response is provided
				GND	Power supply	3	Power supply ground
ZCD	Input	4	Current detecting and the input of output overvoltage sensing
				VDD	Power supply	5	Power supply
DRV	Output	6	Push-pull drive external power MOSFET
				CS	Input	7	The current detecting input
HV	Input	8	Start the inside HV MOSFET input of use

the CLK pin that the LED here drives chip is connected with time sequence driving circuit, also comprise the detection external voltage circuit that is connected with the HV pin of LED driving chip, detecting the external voltage circuit can be under power-down conditions, the voltage of HV pin can descend gradually, the time constant of voltage drop time by capacitor C 5 and resistance R 3 determines, here R3 is 91k Ω, capacitor C 5 is 2.2nF, control LED light when guaranteeing to use and be 6s according to the time that changes, meet human eye to the requirement of the light adaptation of surround lighting, as long as whole LED drives the external voltage of chip and does not drop into below 4V, can remember the front operating state of power down, can not appear at the problem that has stroboscopic when the light modulation ratio is hanged down.

The utility model also comprises the continuous switch module that is connected with power circuit, the user can also just can control the Voltage-output of power circuit by continuous switch module, realize dimming function, greatly reduce expense and the operating expenses of track remodelling, be convenient to the popularization of LED desk lamp with dimmer switch, the continuous switch module here can realize that the remote handle operation realizes the light modulation to the LED lamp, and utilizes existing circuit to make, and only needs to upgrade simply the selection of controlling the software upgrading light modulation.

Above demonstration and described basic principle of the present utility model, principal character and advantage.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. LED desk lamp with dimmer switch, comprise that LED drives chip and LED lamp, it is characterized in that: also comprise time sequence driving circuit for continuous light tuning, be used for the drive circuit of driving LED lamp, the output of described time sequence driving circuit drives chip with LED and is connected, and the output that described LED drives chip is connected with drive circuit.

2. a kind of LED desk lamp with dimmer switch according to claim 1, is characterized in that: also comprise with LED driving the detection external voltage circuit that chip is connected.

3. a kind of LED desk lamp with dimmer switch according to claim 1, it is characterized in that: also comprise power circuit, described power circuit comprises rectifier circuit, the external power supply source of the input of described rectifier circuit, the output of rectifier circuit drive chip with LED respectively, time sequence driving circuit is connected with the drive circuit power input.

4. according to claim 1 or 3 described a kind of LED desk lamps with dimmer switch, is characterized in that: also comprise the continuous switch module that is connected with power circuit.

5. a kind of LED desk lamp with dimmer switch according to claim 1, it is characterized in that: described time sequence driving circuit comprises capacitor C 3 and resistance R 3, described capacitor C 3 and resistance R 3 are connected in parallel on the CLK pin that LED drives chip.

6. a kind of LED desk lamp with dimmer switch according to claim 1, it is characterized in that: described drive circuit comprises that driving mos manages Q1 and transformer T1, the grid of described mos pipe Q1 is connected with the output that LED drives chip, the source electrode of the grid of described mos pipe Q1 is connected with the end of transformer T1, the end of described transformer T1 is as the output of drive circuit, be connected with the LED lamp, described transformer T1 also is provided with for the tap of adjusting output voltage, and is connected with the ZCD pin that LED drives chip by resistance R 4.