CN201733481U - LED bulbs capable of mechanical dimming - Google Patents

Abstract

Can realize mechanical type LED ball bubble lamp of adjusting luminance belongs to the lamps and lanterns field. The brightness of the bulb lamp in the prior art cannot be adjusted after the bulb lamp is turned on. The utility model comprises a switch, an AC-to-DC voltage stabilizing module, more than one LED lamp, a dimming signal module and a dimming control module, wherein the dimming signal module is electrically connected with the dimming control module; the dimming signal module comprises resistors R1 and R2, rectifier diodes D1 and D2, a voltage stabilizing diode D3, capacitors C3 and C2, and the dimming control module comprises a singlechip U1, a photoelectric coupler U2, a resistor R3 and a dimming triode Q1. The utility model relates to a LED ball bubble lamp, the luminance of lamp can be adjusted as required, and it is convenient to adjust to satisfy people's demand, be favorable to saving the electric energy, reduce the expense spending.

Description

LED bulbs capable of mechanical dimming

technical field

The utility model relates to the technical field of lamps, in particular to an LED bulb lamp capable of realizing mechanical dimming.

Background technique

At present, bulb lighting is used in places such as hotels or homes. After the bulb lamp in the prior art is turned on, its brightness remains unchanged after reaching the brightest, that is, the brightness of the bulb lamp cannot be adjusted. When people are watching TV programs, they wish to dim the brightness of the bulb lamp to facilitate watching TV programs. On the other hand, it is also beneficial to save electric energy and reduce expenses. This purpose cannot be realized to the present bulb lamp. Therefore, people urgently hope that a kind of LED bulb lamp that can realize mechanical dimming comes out.

Utility model content

The technical problem to be solved by the utility model is to overcome the defect that the brightness of the bulb lamp in the prior art cannot be adjusted after the light is turned on, and to provide a LED bulb lamp that can realize mechanical dimming. Dimmable LED bulbs can adjust the brightness of fluorescent lamps according to people's needs. On the one hand, they can meet people's needs for watching TV programs or other needs, and on the other hand, they are also conducive to saving electric energy and reducing expenses.

The technical scheme adopted by the utility model to solve the technical problem is: the LED bulb lamp capable of realizing mechanical dimming, including a switch, an AC to DC voltage stabilizing module and more than one LED lamp, and the LED bulb lamp also includes a dimming The optical signal module and the dimming control module, the dimming signal module is electrically connected to the dimming control module, the AC-to-DC voltage regulator module and the dimming signal module are electrically connected to the switch, the dimming control module and the AC-to-DC voltage regulator module are connected to the More than one LED lamp forms an electrical connection.

In the above technical solution, the dimming signal module includes resistors R1 and R2, rectifier diodes D1 and D2, voltage regulator diode D3, capacitors C3 and C2, resistor R1, rectifier diode D1 and capacitor C3 form An electrical connection relationship for stepping down, rectifying and filtering the alternating current to obtain a direct current voltage, the resistor R2 and the regulator diode D3 form an electric connection relationship for stepping down and stabilizing the direct current voltage again to obtain a stable voltage of 5V, One path of the 5V stable voltage is connected to the VDD of the single-chip microcomputer U1 in the dimming control module through the rectifier diode D2 and the capacitor C2, and the other path of the 5V stable voltage is connected to the GP1 of the single-chip microcomputer U1 in the dimming control module.

The dimming control module includes a single-chip microcomputer U1, an optocoupler U2, a resistor R3 and a dimming transistor Q1. One input end of the optocoupler U2 is connected to the GP0 of the single-chip microcomputer U1, and the other input end is connected to the dimming signal module. One output terminal of U2 is connected to the resistor R3, the other output terminal is connected to the dimming transistor Q1, and the output terminals of the dimming transistor Q1, more than one LED lamp, and the AC-to-DC voltage regulator module are connected together in sequence, and the other end of the resistor R3 is connected to the AC Convert to the output terminal of the DC voltage stabilization module.

The beneficial effects of the utility model are: the LED bulb lamp with the above-mentioned structure that can realize mechanical dimming, since it also includes a dimming signal module and a dimming control module, the dimming signal module is electrically connected to the dimming control module, and the AC switch The DC voltage stabilizing module and the dimming signal module are electrically connected to the switch, and the dimming control module and the AC to DC voltage stabilizing module are electrically connected to more than one LED lamp. During the dimming process, by operating the switch, disconnecting and connecting Turn on the power, the dimming signal module and the dimming control module can adjust the brightness of the LED light. When a certain brightness of the LED light in the process of gradual change reaches the desired brightness, you can operate the switch to disconnect and power on once for confirmation. , the light will maintain the current brightness, so as to meet the needs of people watching TV programs or doing certain things. The brightness of the lamp can be adjusted according to people's needs, and the adjustment is convenient; on the other hand, it is also conducive to saving electric energy, prolonging the service life of the lamp, and reducing expenses; through programming control, no dimmer is needed to achieve adjustable illumination; it can be controlled Single or multiple lamps, reducing wiring costs; with fading function, controlled by mechanical buttons, the lamp changes from dark to bright, protecting eyesight and preventing visual fatigue or discomfort: with delay start function, reducing high current impact and prolonging life And increase the stability of light intensity.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Fig. 1 is the schematic diagram of circuit structure of the present utility model;

Fig. 2 is a block diagram of the operation flow of the utility model.

In the figure, 1. AC to DC voltage regulator module; 2. Dimming signal module; 3. Dimming control module; 4. LED lights.

Detailed ways

Embodiment 1, referring to Fig. 1, the LED bulb lamp capable of mechanical dimming described in this embodiment includes a switch, an AC-to-DC voltage stabilization module 1 and more than one LED lamp 4, and this embodiment also includes a dimming The optical signal module 2 and the dimming control module 3, the dimming signal module 2 is electrically connected to the dimming control module 3, the AC to DC voltage regulator module 1 and the dimming signal module 2 are electrically connected to the switch, the dimming control module 3 and the The AC-to-DC voltage stabilizing module 1 is electrically connected to more than one LED lamp 4 , and in FIG. 1 , only the light-emitting diodes of three LED lamps 4 are drawn. The dimming signal module 2 includes resistors R1 and R2, rectifier diodes D1 and D2, voltage stabilizing diode D3, capacitors C3 and C2, and the resistor R1, rectifier diode D1 and capacitor C3 form an alternating current step-down , rectification and filtering to obtain the electrical connection relationship of the DC voltage, the resistor R2 and the regulator diode D3 form an electrical connection relationship to obtain a 5V stable voltage after stepping down and stabilizing the DC voltage again, and the 5V stable voltage is passed through The rectifier diode D2 and capacitor C2 are connected to the VDD of the single-chip microcomputer U1 in the dimming control module 3 , and the other channel of the 5V stable voltage is connected to the GP1 of the single-chip microcomputer U1 in the dimming control module 3 . The dimming control module 3 includes a single-chip microcomputer U1, an optocoupler U2, a resistor R3 and a dimming transistor Q1. One input end of the optocoupler U2 is connected to the GP0 of the single-chip microcomputer U1, and the other input end is connected to the dimming signal module 2. One output terminal of the coupler U2 is connected to the resistor R3, and the other output terminal is connected to the dimming transistor Q1. The dimming transistor Q1, more than one LED lamp 4, and the output terminals of the AC-to-DC voltage regulator module 1 are connected together in sequence, and the resistor R3 The other end is connected to the output end of the AC-to-DC voltage stabilization module 1.

Referring to Fig. 1 and Fig. 2, when the mechanical dimming LED bulb lamp described in this embodiment is in use, when the switch is turned on for the first time (turn on the light), the brightness of the light will change from the dimmest to the dimmest within 3 seconds. Adjust to brightest. After the light is turned on, the 220V AC is stepped down by the resistor R1, rectified by the rectifier diode D1, and filtered by the capacitor C3 to obtain a DC voltage; the DC voltage is stepped down by the resistor R2 again, and stabilized by the voltage regulator diode D3 Finally, a 5V stable voltage is obtained; the 5V stable voltage is isolated by the rectifier diode D2 and stored in the capacitor C2, and then supplied to the single-chip microcomputer U1 to work. The capacitor C2 can make the single-chip microcomputer U1 work for more than 6 seconds when the external power is cut off ( The model of the one-chip computer U1 can be PIC10F202). The other channel of the 5V stable voltage leads to the GP1 of the single-chip microcomputer U1 as a dimming signal detection (normally 5V high level), and the GP0 of the single-chip microcomputer U1 outputs a dimming control signal to control the dimming transistor through the photocoupler U2 Q1 dims the LED lamp 4 (the function of the photocoupler U2 is to isolate the LED lamp 4 from the mains, and the resistor R3 is the power supply current limiting resistor of the photocoupler U2). Detect whether the switch is pressed (off time ≤ 1.5S), and the light remains at the brightest state when there is no switch pressed. When it is necessary to adjust the light, perform the following operations: After the light is turned on, press the switch once (that is, one off and one on, and the time to turn it on after off should be less than or equal to 1.5 seconds), the light will gradually change from the current brightness to the darkest, and the light will gradually change. The process takes 5 seconds (the light is adjusted from the brightest to the dimmest, and the dimming process is completed in 5 seconds). If you want to confirm the current brightness during the gradual change process, press the switch again, and the light will maintain the current brightness (check whether the switch is pressed or not. , disconnection time ≤ 1.5S, when the switch is pressed once, the dimming operation is completed, the lamp maintains the current brightness state, and the dimming process ends). If the switch is not pressed once, the light will remain at the brightest state. When you want to turn off the light, just press the switch to the off position.

The working principle of this embodiment:

After the light is turned on, the single-chip microcomputer U1 starts to work. When the user presses the switch once (the time is less than or equal to 1.5 seconds), because the capacity of the capacitor C3 is small, the voltage disappears quickly, and the voltage on the GP1 of the single-chip microcomputer U1 immediately changes from 5V to high voltage. Level becomes low level, but due to the one-way conduction of the rectifier diode D2 and the energy storage of the capacitor C2 on the circuit that supplies power to the single-chip microcomputer U1, the single-chip microcomputer U1 will continue to work. The single-chip microcomputer U1 can recognize the first switch signal and use it as the start signal of dimming. When the mains is connected after 1.5 seconds, and the GP1 of the single-chip microcomputer U1 changes from 0V to 5V high level, the GP0 of the single-chip microcomputer U1 starts to output The dimming signal is controlled by the photocoupler U2 to control the dimming transistor Q1 to dim. When the brightness of the lamp changes from bright to dark, press the switch again (that is, one off and one on, and the time to turn on after off should be less than or equal to 1.5 Seconds), a potential change from 5V to 0V and then to 5V appears again on GP1 of MCU U1, and MCU U1 can still recognize it. When MCU U1 recognizes it as the second control signal, GP0 of MCU U1 will latch the current Control, which saves the current brightness state of the lamp.

The above is only a preferred embodiment of the utility model, and is not used to limit the utility model. Under the premise of not departing from the structural principle of the utility model, all similar structures should be covered by the protection of the utility model patent. scope.

Claims (3)

1. The LED bulb lamp capable of mechanical dimming, including a switch, an AC-to-DC voltage regulator module and more than one LED lamp, is characterized in that it also includes a dimming signal module, a dimming control module, and a dimming signal module The dimming control module is electrically connected, the AC-to-DC voltage stabilization module and the dimming signal module are electrically connected to the switch, and the dimming control module and the AC-to-DC voltage stabilization module are electrically connected to more than one LED lamp. 2. The LED bulb lamp capable of mechanical dimming according to claim 1, characterized in that: said dimming signal module includes resistors R1 and R2, rectifier diodes D1 and D2, regulator diodes D3, capacitors C3 and C2, resistor R1, rectifier diode D1 and capacitor C3 form an electrical connection relationship for stepping down, rectifying and filtering the AC power to obtain a DC voltage, and the resistor R2 and the voltage regulator diode D3 form an electrical connection that converts the described After stepping down and stabilizing the DC voltage again, a 5V stable voltage electrical connection relationship is obtained. One way of the 5V stable voltage is connected to the VDD of the single-chip microcomputer U1 in the dimming control module through the rectifier diode D2 and capacitor C2, and the other way of the 5V stable voltage is connected to GP1 of microcontroller U1 in the dimming control module. 3. The LED bulb lamp capable of mechanical dimming according to claim 1, characterized in that: the dimming control module includes a single-chip microcomputer U1, a photocoupler U2, a resistor R3 and a dimming transistor Q1, and the photoelectric coupler One input end of the photocoupler U2 is connected to the GPO of the single-chip microcomputer U1, the other input end is connected to the dimming signal module, one output end of the photocoupler U2 is connected to the resistor R3, and the other output end is connected to the dimming transistor Q1, the dimming transistor Q1, a The above LED lights and the output terminals of the AC-to-DC voltage regulator module are sequentially connected together, and the other end of the resistor R3 is connected to the output terminal of the AC-to-DC voltage regulator module.

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