CN202043348U

CN202043348U - Light-emitting diode (LED) lamp capable of conveniently regulating color temperature

Info

Publication number: CN202043348U
Application number: CN2011201526355U
Authority: CN
Inventors: 赵文兴
Original assignee: Dongguan Kaoyi Electronic Technologic Co ltd
Current assignee: XIAMEN KAOTEC ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2011-05-13
Filing date: 2011-05-13
Publication date: 2011-11-16
Anticipated expiration: 2021-05-13

Abstract

The utility model discloses a light-emitting diode (LED) lamp capable of conveniently regulating color temperature, which comprises an LED lamp body and an external control switch. The LED lamp body is provided with a high color temperature LED group, a low color temperature LED group and a color temperature control chip. The high color temperature LED group and the low color temperature LED group are respectively connected in series to a switch power device MOS1 and a switch power device MOS2. A pin OP1 and a pin OP2 of the color temperature control chip are respectively connected to the switch power device MOS1 and the switch power device MOS2. The external control switch is connected to a power wire in series and electrically connected to the color temperature control chip. By cooperating between the external control switch and the color temperature control chip, when color temperature needs regulating, a user only needs to press the external control switch quickly at a short time, and then the LED lamp body gives the required color temperature so that color temperature is convenient to regulate. One external control switch can simultaneously control a plurality of LED lamp bodies. The LED lamp capable of conveniently regulating color temperature is simple in structure, low in cost and convenient in wiring.

Description

Be convenient to regulate the LED light fixture of colour temperature

Technical field

The utility model relates to a kind of LED light fixture, especially relates to a kind of LED light fixture of being convenient to regulate colour temperature.

Background technology

Because advantages such as LED has that volume is little, high brightness, caloric value are low, low voltage drive, and be widely used in the normal lighting light fixture.Recent years particularly, increasing LED is widely used in as road and indoor the grade in the light fixture that throws light on.Traditional LED lamp mostly is that LED by the high colour temperature LED that emits white light or jaundice low colour temperature LED of light or middle colour temperature is as light source.The color temperature value of the above-mentioned traditional light that light fixture sent is unadjustable, its defective is: the LED lamp of the monochromatic temperature of this kind can't satisfy people's demand different to light source color temperature under varying environment, it is higher for example to work as described residing ambient temperature, and send the soft warm light time, if ambient temperature itself is just higher, then light can bring a kind of agitation, uncomfortable, sultryyer sensation to the people.

For addressing the above problem, the some kinds of LED light fixtures of regulating colour temperature are disclosed in the prior art.For example, number of patent application is that 201010546470 Chinese patent has disclosed the adjustable LED illuminating lamp of a kind of colour temperature, it includes shell body, equal tabula rasa and printed circuit board (PCB), on printed circuit board (PCB), three-terminal voltage regulator, current limliting sample resistance are housed to shell body one side, low colour temperature, warm-toned light-emitting diode and white light emitting diode are equipped with in the another side, intersect to be evenly arranged on the printed circuit board (PCB) and by independent constant-current source and power respectively, described each constant-current source is made up of three-terminal voltage regulator and current limliting sample resistance; Between constant-current source that hangs down colour temperature, the power supply of warm-toned light-emitting diode and dc voltage electrode end, be provided with control switch.It can be different according to the user lighting environment, build warm, the steady lighting atmosphere in mountain, satisfy the demand of different application environment.Yet it is the corresponding control switch of a lamp, and the circuit structure complexity, and the cost height is regulated inconvenient.In addition, also disclose in the prior art by remote control control or by be arranged on the LED lamp rotary switch to the colour temperature of light control the LED light fixture, it all is difficult to the drawback avoiding complex structure and be not easy to control, for example, remote control control causes the colour temperature of different LED lamp asynchronous, remote signal problem such as be interfered easily.

Summary of the invention

The utility model is to provide a kind of LED light fixture of being convenient to regulate colour temperature at the defective that the above-mentioned background technology exists, and this LED light fixture can realize that an external control switch can control a plurality of LED lamp bodies simultaneously, and simple in structure, cost is low, convenient wiring.

For achieving the above object, the utility model discloses a kind of LED light fixture of being convenient to regulate colour temperature, it comprises LED lamp body and external control switch, described LED lamp body is provided with high colour temperature LED group, low colour temperature LED group and colour temperature control chip, and described high colour temperature LED group and low colour temperature LED group are in series with the first switch power device and second switch power device respectively; Described colour temperature control chip is electrically connected with described first switch power device and second switch power device, and is used to control the open and close of described first switch power device and second switch power device; Described external control switch is electrically connected with described colour temperature control chip, and is used for sending pulse control signal to described colour temperature control chip.

Further, the described first switch power device is triode or field effect transistor or other similar switch power devices.

Further, the described first switch power device is a field effect transistor, and the drain electrode of described field effect transistor links to each other with described high colour temperature LED group, and the grid of described field effect transistor links to each other the source ground of described field effect transistor with described colour temperature control chip.

Further, described second switch power device is triode or field effect transistor or other similar switch power devices.

Further, described second switch power device is a field effect transistor, and the drain electrode of described field effect transistor links to each other with described low colour temperature LED group, and the grid of described field effect transistor links to each other the source ground of described field effect transistor with described colour temperature control chip.

Further, described LED light fixture also is provided with the current rectifying and wave filtering circuit module, and described current rectifying and wave filtering circuit module is electrically connected with described external control switch, high colour temperature LED group, low colour temperature LED group and colour temperature control chip.

Further, described colour temperature control chip can be single-chip microcomputer or other has the equal characteristic IC of intellectual property.

In sum, the utility model cooperates by described external control switch and described colour temperature control chip, in the time will regulating the colour temperature of LED lamp body, only need to push fast at short notice described external control switch, within a certain period of time, by pushing different number of times, make described external control switch to the different pulse control signal of described colour temperature control chip quantity forwarded, described colour temperature control chip is controlled described LED lamp body according to the difference of described pulse control signal and is sent different colour temperatures, thereby be convenient to regulate colour temperature, an external control switch can be controlled a plurality of LED lamp bodies simultaneously, and is simple in structure, cost is low, convenient wiring.

Description of drawings

Fig. 1 is the circuit theory diagrams of a kind of embodiment of the utility model.

Embodiment

For further understanding feature of the present utility model, technological means and the specific purposes that reached, function, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.

See also Fig. 1, the LED light fixture that the utility model is convenient to regulate colour temperature comprises LED lamp body 1 and external control switch SW, and described LED lamp body 1 is provided with high colour temperature LED group 2, low colour temperature LED group 3, colour temperature control chip 4 and current rectifying and wave filtering circuit module 5.Described high colour temperature LED group 2 and low colour temperature LED group 3 are in series with the first switch power device MOS1 and second switch power device MOS2 respectively.Described colour temperature control chip 4 is electrically connected with described first switch power device MOS1 and second switch power device MOS2, and is used to control the open and close of described first switch power device MOS1 and second switch power device MOS2.

In the present embodiment, the described first switch power device MOS1 is a field effect transistor, the drain electrode d of described field effect transistor links to each other with described high colour temperature LED group 2, and the grid g of described field effect transistor links to each other with the pin OP1 of described colour temperature control chip 4, the source electrode s ground connection of described field effect transistor.Described second switch power device MOS2 is a field effect transistor, and the drain electrode d of described field effect transistor links to each other with described low colour temperature LED group 3, and the grid g of described field effect transistor links to each other with the pin OP2 of described colour temperature control chip 4, the source electrode s ground connection of described field effect transistor.Described external control switch SW is electrically connected with the DIM pin of described colour temperature control chip 4, and is used for sending pulse control signal to described colour temperature control chip 4.Described current rectifying and wave filtering circuit module 5 is electrically connected with described external control switch SW, high colour temperature LED group 2, low colour temperature LED group 3 and colour temperature control chip 4.

In the time will regulating the colour temperature of LED lamp body 1, only need to push fast at short notice described external control switch SW, within a certain period of time, by pushing different number of times, make described external control switch SW to the different pulse control signal of described colour temperature control chip 4 quantity forwardeds, described colour temperature control chip 4 is controlled described LED lamp body 1 according to the difference of described pulse control signal and is sent different colour temperatures.

For example, push external control switch SW in short-term once, pin DIM obtains 1 subpulse signal, colour temperature control chip 4 numerations 1 time, pin OP2 output high level or the bigger square wave of duty ratio, the square wave that pin OP1 output low level or duty ratio are less, low colour temperature LED group 3 plays a leading role, and device presents low colour temperature state.

Push external control switch SW in short-term twice, pin DIM obtains 2 subpulse signals, colour temperature control chip 4 numerations 2 times, and pin OP2 and pin OP1 output duty cycle are 50% square wave, and two kinds of colour temperature LED organize each and play half effect, and device presents the muted color temperature state.

Push external control switch SW in short-term three times, pin DIM obtains 3 subpulse signals, colour temperature control chip 4 numerations 3 times, pin OP1 output high level or the bigger square wave of duty ratio, the square wave that pin OP2 output low level or duty ratio are less, high colour temperature LED group 2 plays a leading role, and device presents the high luminance relay temperature state.

Push external control switch SW in short-term four times, pin DIM obtains 4 subpulse signals, colour temperature control chip 4 numerations 4 times, and colour temperature control chip 4 inner replacements, device is forced to low colour temperature state.Describedly press end finger operate time in short-term less than 1 second.

In sum, the utility model cooperates by described external control switch SW and described colour temperature control chip 4, in the time will regulating the colour temperature of LED lamp body 1, only need to push fast at short notice described external control switch SW, within a certain period of time, by pushing different number of times, make described external control switch SW to the different pulse control signal of described colour temperature control chip 4 quantity forwardeds, described colour temperature control chip 4 is controlled described LED lamp body 1 according to the difference of described pulse control signal and is sent different colour temperatures, thereby be convenient to regulate colour temperature, an external control switch SW can control a plurality of LED lamp bodies 1 simultaneously, and is simple in structure, cost is low, convenient wiring.

The above embodiment has only expressed a kind of execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model scope.Should be noted that; for the person of ordinary skill of the art; under the prerequisite that does not break away from the utility model design; can also make some distortion and improvement; for example; described colour temperature control chip 4 is set to single-chip microcomputer or other, and to have the equal characteristic IC of intellectual property, the described first switch power device and second switch power device be triode or other similar switch power devices etc., and these all belong to protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with claims.

Claims

1. LED light fixture of being convenient to regulate colour temperature, it comprises LED lamp body (1) and external control switch SW, it is characterized in that: described LED lamp body (1) is provided with high colour temperature LED group (2), low colour temperature LED group (3) and colour temperature control chip (4), and described high colour temperature LED group (2) and low colour temperature LED group (3) are in series with the first switch power device MOS1 and second switch power device MOS2 respectively; Described colour temperature control chip (4) is electrically connected with described first switch power device MOS1 and second switch power device MOS2, and is used to control the open and close of described first switch power device MOS1 and second switch power device MOS2; Described external control switch SW is electrically connected with described colour temperature control chip (4), and is used for sending pulse control signal to described colour temperature control chip (4).

2. the LED light fixture of being convenient to regulate colour temperature according to claim 1 is characterized in that: the described first switch power device MOS1 is triode or field effect transistor.

3. the LED light fixture of being convenient to regulate colour temperature according to claim 1 and 2, it is characterized in that: the described first switch power device MOS1 is a field effect transistor, the drain electrode d of described field effect transistor links to each other with described high colour temperature LED group (2), the grid g of described field effect transistor links to each other with described colour temperature control chip (4), the source electrode s ground connection of described field effect transistor.

4. the LED light fixture of being convenient to regulate colour temperature according to claim 1 and 2 is characterized in that: described second switch power device MOS2 is triode or field effect transistor.

5. the LED light fixture of being convenient to regulate colour temperature according to claim 4, it is characterized in that: described second switch power device MOS2 is a field effect transistor, the drain electrode d of described field effect transistor links to each other with described low colour temperature LED group (3), the grid g of described field effect transistor links to each other with described colour temperature control chip (4), the source electrode s ground connection of described field effect transistor.

6. the LED light fixture of being convenient to regulate colour temperature according to claim 1 and 2, it is characterized in that: described LED light fixture also is provided with current rectifying and wave filtering circuit module (5), and described current rectifying and wave filtering circuit module 5 is electrically connected with described external control switch SW, high colour temperature LED group (2), low colour temperature LED group (3) and colour temperature control chip (4).

7. the LED light fixture of being convenient to regulate colour temperature according to claim 1 and 2 is characterized in that: described colour temperature control chip (4) can be single-chip microcomputer.