CN202708704U - Colorful and color-changing LED lamps - Google Patents

Abstract

The utility model discloses a colorful LED lamps and lanterns that change colour, include the heat dissipation shell and locate LED illuminator in the heat dissipation shell, LED illuminator includes switching power supply, colorful color-changing control module, selection module and LED module, switching power supply connects the commercial power and supplies power to colorful color-changing control module and LED module through a switch, colorful color-changing control module control LED module's color and luminance, a termination switching power supply's of selection module input, another termination colorful color-changing control module and send the select signal during the switch action, colorful color-changing control module controls LED module circulation when first circular telegram and discolours to control LED module when receiving the select signal and keep current colour unchangeable or resume circulation once more and discolour. Colorful LED lamps and lanterns that discolour is energy-conserving, high-efficient not only, can carry out the color change control through the switch moreover, control method is simple and with low costs.

Description

Colorful and color-changing LED lamps

technical field

The utility model relates to the technical field of semiconductor lighting, in particular to an LED lamp capable of automatic color change and manual specific color selection.

Background technique

With the continuous development of semiconductor lighting technology, LED lights are gradually popularized, but there are still some shortcomings in the process of use. For example, the colored fluorescent lights at the present stage can only be one tube with one color, and cannot change color, which cannot meet the requirements of the colorful world. The dynamic demand for rich colors; at the same time, the power of fluorescent lamps is high, the efficiency is low, and the energy consumption is high, which does not meet the requirements of environmental protection. For this reason, existing technicians have developed an LED lamp that can automatically change color, but this type of LED lamp can only be installed with a pre-set program to emit light regularly, and can only make it glow within the three colors of red, green and blue. Cyclic discoloration, discoloration control of combined colors cannot be carried out. Moreover, when it is necessary to design this type of color-changing LED lamp as a tube lamp, existing technical personnel often set the control module for controlling the discoloration of the tube lamp outside the tube lamp, so that the discoloration LED tube lights are large in size, which increases the data lines required for control; in addition, when installing this type of LED lights, it is often necessary to connect the tube lights with the control components and switch components outside the tube lights, which is inconvenient for installation and complicated wiring. trouble.

Therefore, there is an urgent need for a colorful and color-changing LED lamp capable of color-changing control, energy-saving, high-efficiency, and easy installation.

Utility model content

The purpose of the utility model is to provide a multi-color and color-changing LED lamp. The multi-color and color-changing LED lamp is not only energy-saving, high-efficiency, convenient to install, but also capable of color-changing control.

In order to achieve the above object, the technical solution of the present utility model is to provide a multi-color and color-changing LED lamp, which includes a heat dissipation shell and an LED lighting device arranged in the heat dissipation , colorful discoloration control module, selection module and LED module, the input terminal of described switching power supply is connected to mains through a switch, the VCC output end of described switching power supply is respectively connected described colorful discoloration control module and LED module, described colorful discoloration The other end of the control module is connected to the LED module, one end of the selection module is connected to the input end of the switching power supply, and the other end is connected to the multi-color discoloration control module and sends a selection signal when the switch operates, the multi-color discoloration The control module controls the LED module to change color cyclically when it is powered on for the first time, and controls the LED module to keep the current color unchanged or resume cyclic color change again when receiving the selection signal.

Compared with the prior art, the colorful and color-changing LED lamps described in the utility model are not only energy-saving and efficient, but also can be controlled for color change. open), the selection module sends a selection signal including keeping the current color unchanged, the multi-color discoloration control module controls the LED module to keep the current color unchanged, that is, stops the cycle of discoloration, until the switch acts again, the selection module sends The selection signal for resuming cyclic discoloration is included, and the colorful discoloration control module controls the LED module to resume cyclic discoloration again, and the control method is simple and low in cost. On the other hand, the multi-color and color-changing LED lamp is provided with the LED light-emitting device in the heat-dissipating shell, which is convenient for installation.

Preferably, the multicolor discoloration control module includes a voltage stabilizing unit, a PWM multicolor discoloration controller and a driver, the input end of the voltage stabilization unit is connected to the output end of the switching power supply, and the output end is connected to the PWM multicolor discoloration controller It is connected with the driver and outputs a 5V reference voltage, the PWM multi-color discoloration controller is connected with the driver and outputs corresponding instructions, and the driver controls the LED module to cyclically change color according to the instructions issued by the PWM multi-color discoloration controller.

Specifically, the driver includes a constant current driver, the constant current driver includes a PWM drive unit and a constant current signal detection unit, the PWM drive unit is connected to a 5V reference voltage, and one end is connected to the PWM multi-color discoloration controller, and the other One end is connected to the LED module, one end of the constant current signal detection unit is connected to the negative pole of the LED module, and the other end is connected to the PWM driving unit to feed back the current of the LED module to the PWM driving unit, and the PWM driving unit The power supply of the LED module is controlled to be stable according to the feedback current information. Compared with the current RGB LED light strips, there are generally insufficient brightness and constant current drive, resulting in very fast LED attenuation. In addition, because the LED lights are wrapped in plastic and cannot dissipate heat, there are safety hazards such as plastic melting. A constant current driver with a PWM drive unit is used as the driver of the LED module, and a cross-current signal detection unit is used to feed back the current of the LED module, so that the LED lamp has stable light emission, long life and less heat generation.

More specifically, the constant current signal detection unit includes a resistor RB1, and the resistor RB1 is connected in series between the feedback signal output terminal and the ground; the constant current driver includes a first voltage divider circuit, a second voltage divider circuit, a comparison U1 and switch tube Q10, the source of the switch tube is connected to the negative pole of the LED module, the drain is connected to the feedback signal output terminal, and the first voltage divider circuit is connected in series to the pulse width control terminal of the PWM drive unit and the ground, the output terminal is connected to the "+" pin of the comparator U1; the second voltage divider circuit is connected in series between the 5V reference voltage and the feedback signal output terminal, and the output terminal is connected to the comparator U1 The “—” pin of the voltage divider U1 is connected to the gate of the switching transistor Q10.

Preferably, the selection module includes a signal acquisition unit and a delay capacitor C1, the signal acquisition unit is connected to the output terminal of the switch and collects the action signal of the switch, and the output terminal of the signal acquisition unit passes through a resistor R57 It is connected to the 5V reference voltage and outputs a selection signal through the resistor R59, and the delay capacitor is connected in series between the 5V reference voltage and ground. The delay capacitor C1 in this solution makes the switch act, especially when the switch is closed, the signal acquisition unit can continuously generate the selection signal, so that the utility model can use an ordinary push switch or a single-pole toggle switch as the switch, and the cost is low.

Specifically, the signal acquisition unit includes a third voltage dividing circuit, a resistor R55, a resistor R69, a Zener diode Z2, a transistor Q7 and a photoelectric coupler U7, and the third voltage dividing circuit is connected in series between the switch and ground Between, the output terminal is connected to the base of the triode Q7 through the resistor R55; the Zener diode Z2 is connected in series between the output terminal of the third voltage dividing circuit and the ground; the photocoupler U7 One end of the light source part is connected to the VDD output end of the switch, the other end is connected in series with the resistor R69 and the collector of the triode Q7 and then grounded. One end of the light source part of the photocoupler U7 is connected to the 5V reference voltage through the resistor R57, and the R59 outputs a selection signal, and the other end is grounded. This solution enables the signal acquisition unit to send out a square wave signal during normal operation, and send out a high-level signal when the switch operates.

Preferably, the multi-color discoloration control module is a seven-color control module, which controls the LED module to perform seven-color discoloration. Of course, the multicolor discoloration control module can also be other control modules such as tricolor.

Preferably, the multicolor discoloration control module is a color temperature discoloration control module, which controls the LED module to cycle discoloration within a predetermined color temperature range. This solution makes the color change of the multi-color and color-changing LED lamps described in the utility model more abundant.

Preferably, the LED module is formed by arranging several LED chips of three primary colors in a predetermined combination order.

Preferably, the colorful and color-changing LED lamps are spotlights, downlights, wall washers or spotlights.

The utility model will become clearer through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the utility model.

Description of drawings

Fig. 1 is a structural block diagram of the LED lighting device of the present invention.

Fig. 2 is a schematic circuit diagram of the connection between the constant current driver and the LED in the LED module in the present invention.

Fig. 3 is a schematic circuit diagram of the selection module of the present invention.

Fig. 4 is a perspective view of the spotlight of the present invention.

Fig. 5 is a perspective view of the downlight of the present invention.

Fig. 6 is a perspective view of the projection lamp of the present invention.

Fig. 7 is a perspective view of the wall washer described in the present invention.

Detailed ways

Referring to Fig. 1 to Fig. 7, the utility model discloses a kind of multi-color and color-changing LED lamps 40, 50, 60, 70, which include heat dissipation shells 42, 52, 62, 72 and heat dissipation shells 42, 52, 62, 72 inside the LED lighting device 100.

Referring to Fig. 1, the LED lighting device 100 of the present invention is connected to the mains (220 AC) through a switch 101, which includes a switching power supply 11, a multi-color discoloration control module 12, a selection module 13 and an LED module 14. The switching power supply 11 The input terminal is connected to the mains through a switch 101, and the VCC output terminal (output rated voltage of 40V) of the switching power supply 11 is respectively connected to the multicolor discoloration control module 12 and the LED module 14, thereby controlling the multicolor discoloration control module 12 and the LED module 14. The LED module 14 supplies power, and the other end of the multi-color discoloration control module 12 is connected to the LED module 14 to control the light emitting of the LED module 14. One end of the selection module 13 is connected to the input end of the switching power supply 11, and the other end is connected to the input end of the switching power supply 11. The multi-color discoloration control module 12 sends a selection signal when the switch 101 acts, and the multi-color discoloration control module 12 controls the LED module 14 to change color cyclically when it is powered on for the first time, and controls all LED modules 14 when receiving the selection signal. The LED module 14 keeps the current color unchanged or restores the cyclic color change again.

Wherein, the LED module 14 is composed of several three-primary-color LED chips according to a predetermined serial combination sequence to form a multi-color discoloration control module 12, and the multi-color discoloration control module 12 can be other control modules such as a three-color control module, a seven-color control module, etc., so that the LED The module 14 changes color cyclically in colors such as three colors and seven colors. Preferably, the multicolor discoloration control module 12 can also be a color temperature discoloration control module, which controls the LED module 14 to cycle discoloration within a predetermined color temperature range.

With reference to Fig. 1, described multicolor discoloration control module 12 comprises voltage stabilizing unit 21, PWM multicolor discoloration controller 22 and driver 23, and described voltage stabilizing unit 21 input end is connected with the output end of described switching power supply 11, and described voltage stabilizing unit The output terminal of the unit 21 is connected with the PWM multi-color discoloration controller 22 and the driver 23 and outputs a 5V reference voltage, and the PWM multi-color discoloration controller 22 is connected with the driver 23 and outputs corresponding instructions, and the driver 23 is based on the described The instructions issued by the PWM multicolor discoloration controller 22 control the LED module 14 to change color cyclically, to keep the current color unchanged, or to resume cyclic discoloration again. Wherein, the PWM colorful color-changing controller 22 generally adopts a single-chip microcomputer STC15F104 as a main device. As shown in FIG. 1 , the driver 23 generally uses three sets of functional output terminals R, G, and B of the PWM multicolor discoloration controller 22 to control the light emitting color and brightness of the LED module 14 .

2, the driver 23 includes a constant current driver 30, the constant current driver 30 includes a PWM drive unit 31 and a constant current signal detection unit 32, the PWM drive unit 31 is connected to a 5V reference voltage, and one end is connected to The PWM multicolor discoloration controller 22 is connected, and the other end is connected to the LED module 14. One end of the constant current signal detection unit 32 is connected to the negative pole of the LED module 14, and the other end is connected to the PWM driving unit 31 to feed back the LED module 14. The current of the module 14 is sent to the PWM driving unit 31, and the PWM driving unit 31 controls the power supply of the LED module 14 to be stable according to the feedback current information.

More specifically, referring to FIG. 2, the constant current signal detection unit 32 includes a resistor RB1, and the resistor RB1 is connected in series between the feedback signal output terminal A and ground; the constant current driver 31 includes a first voltage divider circuit, The second voltage divider circuit, comparator U1 and switch tube Q10, the source of the switch tube Q10 is connected to the negative pole of the LED module 14, the drain is connected to the feedback signal output terminal A, and the first voltage divider circuit is connected in series Between the pulse width control terminal B of the PWM drive unit 22 and the ground, the output terminal is connected to the "+" pin of the comparator U1; the second voltage divider circuit is connected in series to the 5V reference voltage and the feedback signal output terminal Between A, the output terminal is connected to the "-" pin of the comparator U1, and the output terminal of the voltage divider U1 is connected to the gate of the switching transistor Q10. Wherein, the second voltage divider circuit includes a resistor R92 connected in series between the feedback signal output terminal A and the "-" pin of the comparator U1, and a resistor R92 connected in series between the "-" pin of the comparator U1 and 5V A resistor R93 between the reference voltages, the first voltage divider circuit includes a resistor R84 connected in series between the pulse width control terminal B and the "+" pin of the comparator U1 and a resistor R84 connected in series with the "+" pin of the comparator U1 Resistors R88 and R89 between ground and ground.

Preferably, referring to FIG. 3 , the selection module 13 includes a signal acquisition unit 131 and a delay capacitor C1, the signal acquisition unit 131 is connected to the output end of the switch 101 and collects an action signal of the switch 101, the The output terminal of the signal acquisition unit 131 is connected to a 5V reference voltage through a resistor R57, and outputs a selection signal through a resistor R59, and the delay capacitor C1 is connected in series between the 5V reference voltage and ground. Wherein, other delay units may also be used instead of the delay capacitor C1.

Specifically, referring to FIG. 3, the signal acquisition unit 131 includes a third voltage divider circuit, a resistor R55, a resistor R69, a Zener diode Z2, a transistor Q7 and a photocoupler U7, and the third voltage divider circuit is connected in series Between the input terminal of the switching power supply 11 and the ground, the output terminal is connected to the base of the triode Q7 through the resistor R55; the Zener diode Z2 is connected in series between the output terminal of the third voltage divider circuit and the ground Between; one end of the light source part of the photoelectric coupler U7 is connected to the VDD output terminal of the switching power supply 11 outputting a 15V reference voltage, and the other end is connected in series with the collector of the resistor R69 and the triode Q7 and grounded, the photoelectric coupler One end of the light source part of U7 is connected to a 5V reference voltage through a resistor R57, a selection signal is output through a resistor R59, and the other end is grounded. This solution enables the signal acquisition unit 131 to send out a square wave signal during normal operation, and send out a high level signal when the switch 101 operates. Wherein, the third voltage dividing circuit includes resistors R53 and R56 connected in series between the input terminal of the switching power supply 11 and the output terminal of the voltage dividing signal, and a resistor connected in series between the output terminal of the voltage dividing signal and the ground. R52.

Referring to FIG. 4 , the LED lamp is a spotlight 40, including a bracket 41, a heat sink 42 pivotally connected to the bracket 41, a light-transmitting cover 43 connected to the heat sink 42, and a heat sink mounted on the heat sink. The reflector 44 of the housing 42 , the circuit board 45 and the LED lighting device 100 , the LED module 15 is composed of several LED chips 151 fixed on the circuit board 45 in a certain array.

Referring to FIG. 5 , the LED lamp is a downlight 50, including a base 51, a heat dissipation shell 52 connected to the base 51, a reflector 53 installed in the heat dissipation shell 52, and a heat sink connected to the heat dissipation shell 52. The transparent cover 54 and the LED lighting device 100 installed in the reflective cover 53 .

Referring to FIG. 6 , the LED lamp is a floodlight 60, including a base 61, a heat dissipation shell 62 pivotally connected to the base 61, a reflective cup 63 installed in the heat dissipation shell 62, a circuit board 64 and The LED lighting device 100, and the light-transmitting cover 65 connected to the heat dissipation shell 62, the reflection cup 63 has a through hole in the middle, the circuit board 64 is installed in the through hole, and the LED module 15 It consists of several LED chips 151 fixed on the circuit board 64 in a certain array.

Referring to FIG. 7, the LED lamp is a wall washer 70, including a fixing frame 71, a heat dissipation shell 72 fixed on the fixing frame 71, a light-transmitting cover 75 connected to the heat dissipation shell 72, and installed on the The U-shaped reflector 73 in the heat dissipation shell 72, the strip circuit board 74 installed in the U-shaped reflector 73 and the LED lighting device 100, the LED module 15 is composed of several LED chips 151, the LED The chips 151 are arranged in a row at a certain distance and fixed on the strip circuit board 74 .

Of course, the multi-color and color-changing LED lamps of the present invention also include other types, such as tube lamps and the like.

The utility model has been described above in conjunction with the best embodiments, but the utility model is not limited to the above-disclosed embodiments, but should cover various modifications and equivalent combinations based on the essence of the utility model.

Claims (10)

1. A colorful and color-changing LED lamp, characterized in that: it comprises a heat dissipation shell and an LED lighting device located in the heat dissipation shell, and the LED lighting device includes a switching power supply, a colorful and color-changing control module, a selection module and an LED module. The input end of the switching power supply is connected to the mains through a switch, the VCC output end of the switching power supply is respectively connected to the multi-color discoloration control module and the LED module, and the other end of the multi-color discoloration control module is connected to the LED module. One end of the selection module is connected to the input end of the switching power supply, the other end is connected to the multi-color discoloration control module and sends a selection signal when the switch operates, and the multi-color discoloration control module controls the LED module to cycle discoloration when it is powered on for the first time , and when receiving the selection signal, control the LED module to keep the current color unchanged or resume the cyclic color change again. 2. The colorful and color-changing LED lamp according to claim 1, wherein the multi-color and color-changing control module includes a voltage stabilizing unit, a PWM multi-color and discoloring controller and a driver, and the input terminal of the voltage stabilizing unit is connected to the switching power supply. The output terminal is connected, and the output terminal is connected with the PWM multicolor discoloration controller and the driver and outputs a 5V reference voltage. One end of the PWM multicolor discoloration controller is connected with the selection module, and the other end is connected with the driver and according to the selection The signal sends a corresponding command to the driver, and the driver controls the LED module to cycle, keep the current color unchanged, or resume cycle color change again according to the command sent by the PWM multicolor color change controller. 3. The colorful and color-changing LED lamp according to claim 2, wherein the driver includes a constant current driver, the constant current driver includes a PWM drive unit and a constant current signal detection unit, and the PWM drive unit is connected to a 5V reference voltage, and one end is connected to the PWM multi-color discoloration controller, the other end is connected to the LED module, one end of the constant current signal detection unit is connected to the negative pole of the LED module, and the other end is connected to the PWM driving unit to feed back the LED The current of the module is sent to the PWM driving unit, and the PWM driving unit controls the power supply of the LED module to be stable according to the feedback current information. 4. The colorful and color-changing LED lamp according to claim 3, wherein the constant current signal detection unit includes a resistor RB1, and the resistor RB1 is connected in series between the feedback signal output terminal and the ground; the constant current driver It includes a first voltage divider circuit, a second voltage divider circuit, a comparator U1 and a switch tube Q10. The source of the switch tube is connected to the negative pole of the LED module, and the drain is connected to the feedback signal output terminal. The first voltage divider The circuit is connected in series between the pulse width control terminal of the PWM drive unit and the ground, and the output terminal is connected to the "+" pin of the comparator U1; the second voltage divider circuit is connected in series between the 5V reference voltage and the feedback signal Between the output terminals, the output terminal is connected to the “—” pin of the comparator U1, and the output terminal of the voltage divider U1 is connected to the gate of the switching transistor Q10. 5. The colorful and color-changing LED lamp according to claim 1, wherein the selection module includes a signal acquisition unit and a delay capacitor C1, and the signal acquisition unit is connected to the output end of the switch and collects the output of the switch. For the action signal, the output end of the signal acquisition unit is connected to a 5V reference voltage through a resistor R57, and a selection signal is output through a resistor R59, and the delay capacitor is connected in series between the 5V reference voltage and ground. 6. The colorful and color-changing LED lamp according to claim 5, wherein the signal acquisition unit includes a third voltage divider circuit, a resistor R55, a resistor R69, a Zener diode Z2, a triode Q7 and a photocoupler U7, The third voltage divider circuit is connected in series between the switch and the ground, and the output end is connected to the base of the triode Q7 through the resistor R55; the Zener diode Z2 is connected in series with the third voltage divider circuit between the output terminal of the photoelectric coupler U7 and the ground; one end of the light source part of the photoelectric coupler U7 is connected to the VDD output terminal of the switching power supply, and the other end is connected in series with the resistor R69 and the collector of the triode Q7 and then grounded. One end of the light source part of U7 is connected to a 5V reference voltage through a resistor R57, a selection signal is output through a resistor R59, and the other end is grounded. 7. The multi-color and color-changing LED lamp according to claim 1, wherein the multi-color and color-changing control module is a seven-color control module, which controls the LED module to perform seven-color discoloration. 8. The multi-color and color-changing LED lamp according to claim 1, wherein the multi-color and color-changing control module is a color temperature and color-changing control module, which controls the LED module to cycle and change color within a predetermined color temperature range. 9. The colorful and color-changing LED lamp according to claim 1, wherein the LED module is formed by a plurality of three-primary-color LED chips according to a predetermined combination sequence. 10. The colorful and color-changing LED lamp according to claim 1, wherein the LED lamp is a spotlight, a downlight, a wall washer or a spotlight.

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