TWI604755B - Illumination device and its light color control method - Google Patents

Description

Lighting device and light color control method thereof

The invention relates to a lighting device and a light color control method thereof, in particular to a lighting device with a memory function and a light color control method thereof.

With the advancement of the manufacturing technology of the light-emitting diode, the light color emitted by the light-emitting diode is no longer only the traditional white color, but also various colors composed of red, green, blue and a combination thereof, and thus, the illumination is made. In addition to illuminating the target to make it clearer, the use of the lighting device to change the color of the lighting device to achieve the purpose of environmental layout, atmosphere and entertainment activities is becoming more and more popular.

For example, the Republic of China Invention Patent Publication No. I540934 proposes an LED illumination dimming circuit for controlling dimming of LED elements, which is characterized in that it has: a power supply terminal for supplying a power supply voltage; a ground terminal connected to a ground; and a first output terminal; Connecting to the power supply terminal and connecting the anode side of the LED element; the second output terminal is connected to the cathode side of the LED element; the capacitor is connected to one end of the first output terminal, and the other end is connected to the other end; a coil connecting the other end of the capacitor to one end thereof; a switching element connecting one end of the coil to one end thereof; a resistor connecting one end of the switching element to one end thereof, and the other end of the grounding terminal; the diode, the power source The terminal is connected to the cathode, and the other end of the coil is connected to the anode; and the control circuit is based on the dimming signal indicating the dimming rate of the LED element, the detection voltage corresponding to the voltage drop of the resistor, and the detection current flowing in the coil. Using a switch control signal to control the action of the aforementioned switching element; In the first mode in which the dimming signal displays the first dimming rate, the control circuit fixes a switching period in which the switching element is turned on and the switching element is turned off, and the switching period is fixed. The second signal of the first dimming interval dimming rate from the first dimming rate to the second dimming rate lower than the first dimming rate, the tone of the dimming signal is displayed When the light ratio is lowered, the switching period is reduced while maintaining the ratio of the opening period to the closing period, and the dimming signal is displayed from the second dimming rate to the second dimming rate. In the third mode of the second dimming interval dimming rate until the third dimming rate is low, when the dimming rate displayed by the dimming signal is lowered, the opening period is shortened while the closing period is fixed. Further, in the fourth mode in which the dimming signal indicates the third dimming interval dimming rate from the third dimming rate to the fourth dimming rate lower than the third dimming rate, the adjustment is performed. When the dimming rate displayed by the optical signal is lowered, the aforementioned The opening period is shortened, and the closing period is lengthened. Further, in the fifth mode in which the dimming signal displays the dimming rate of the fourth dimming rate, the opening period is fixed, and the closing period is fixed to a ratio When the value of the dimming signal is longer than the first threshold, the control mode of the LED illumination dimming circuit is determined to be the first mode, and the value of the dimming signal is longer. When the second threshold value is smaller than the first threshold value and is less than the first threshold value, it is determined that the control mode is the second mode.

In the above prior art, the conventional multi-stage dimming illumination device does not have the color control function of colored light, so the single color of the illumination mainly focuses on the change of white light and its brightness and color temperature, and the illumination device does not have a memory function. That is to say, it takes time to operate when the light is selected for the first time. If the same brightness or color temperature is used again, it needs to be reset again. Therefore, the conventional lighting device still needs to be improved for the convenience of operation.

The main object of the present invention is to solve the problem that the conventional lighting device has to be improved in color control of color light and convenience in operation.

In order to achieve the above object, the present invention provides a light color control method for a lighting device, comprising the following steps:

Step S1: providing a lighting device electrically connected to an external switch, the external switch determining whether to obtain an external power from a commercial power, the lighting device comprising an electrical connection with the external switch and rectifying the external power into a high voltage a DC rectifier, a power conversion circuit electrically connected to the rectifier, an illumination unit electrically connected to the power conversion circuit, and a micro-electrode connected to the power conversion circuit and having a rewritable read-only memory Processor unit

Step S2: Turning on the external switch, the current flows through the rectifier and causes the power conversion circuit to receive the high voltage direct current and perform a power conversion to output an operating voltage and a driving voltage, and the microprocessor unit receives the operating voltage. , performing an initial procedure;

Step S3: the microprocessor unit outputs a low-brightness white light control signal at a first interval, the light-emitting unit receives the low-brightness white light control signal, emits a low-brightness white light, and determines whether the external switch is at the first interval. Shut down in time;

Step S4: if the external switch continues to be turned on when the first interval time is exceeded, the microprocessor unit reads a record data stored in the rewritable read-only memory and executes a work mode recognition program. The pattern recognition program determines that the record data stored in the rewritable read-only memory is a first working mode or a second working mode;

Step S5: If the record data is in the first working mode, the microprocessor unit outputs an illumination white light control signal at a second interval, and the illumination unit receives the illumination white light control signal and emits an illumination white light, and determines Whether the external switch is turned off during the second interval, and if so, writing the record data in the rewritable read-only memory to the second working mode and a pair of light colors that should illuminate the white light control signal Data, if not, the microprocessor unit sends a plurality of first color control signals to the light unit according to a phase timing, and the light unit receives the first color control signal and emits a plurality of different light colors C _n The light color C _n has a total of n, n is a resolution-related parameter, and determines whether the external switch is turned off. When the light emitting unit emits a light color C _i , if the microprocessor unit determines the external the switch is turned off, the erasable read-only memory to write the log data for the second operating mode, and a control signal corresponding to the first color light color information, where C _i represents the i-th sequence in the A light color, the first color and the light color data control signal corresponding to the light color C _i; and

Step S6: If the record data is in the second working mode, the microprocessor unit reads the light color data in the record data, and outputs the illumination white light control signal or the first color control signal, and the light emitting unit accepts the The corresponding white light or the light color C _{i is} emitted after the white light control signal or the first color control signal is illuminated.

In order to achieve the above object, the present invention further provides a lighting device comprising a rectifier, a power conversion circuit, an illumination unit and a microprocessor unit, the rectifier and an external switch electrical property determining whether to obtain an external power from a mains supply Connecting and receiving the external power and rectifying into a high voltage direct current, the power conversion circuit is electrically connected to the rectifier to receive the high voltage direct current, and can automatically start and perform a power conversion to output a driving voltage and an operating voltage. The light emitting unit includes a plurality of light emitting diodes electrically connected to the power conversion circuit and receiving the driving voltage to drive the light emitting diode, the microprocessor unit having an rewritable read only memory. After being electrically connected to the power conversion circuit and receiving the operating voltage, an initial process is started and executed, and then a low-brightness white light signal is sent at a first interval time to determine whether the external switch is turned off. If yes, then The rewritable read-only memory resets a record data, and if not, reads the rewritable read-only memory After storing the record data, executing a work mode recognition program for determining whether the record data stored in the rewritable read-only memory is a first work mode or a second work mode, if the record The data is the first working mode, and an illumination white light control signal is outputted to the light emitting unit at a second interval, so that the light emitting unit emits an illumination white light, and further determining whether the external switch is in the second interval time. Turning off, if yes, writing the record data in the rewritable read-only memory to the second working mode and a pair of light color data that should illuminate the white light control signal, and if not, the microprocessor The unit sends a plurality of first color control signals to the light emitting unit according to a phase timing, and the light emitting unit receives the first color control signal and emits a plurality of different light colors C _n , wherein the light colors C _n have n, n and a parameter related to resolution, and determines whether or not the external switch is turned off, when the light emitting unit emits a light color C _i, if it is judged that the external switch has been turned off, it can be in the Write-read only memory written in the log data for the second operating mode, and a control signal corresponding to the first color light color information, wherein, C _i represents the i th color light emitted by the timing, and the first to be The light color data of a color control signal corresponds to the light color C _i , and if the record data is the second work mode, the illumination white light control signal or the first color is output according to the light color data in the record data. Controlling the signal to the illumination unit to emit the corresponding illumination white light or the color C _i .

It can be seen from the above that the achievable effect of the present invention over the prior art is to record, reset and read the working modes in the rewritable read-only memory and the light corresponding to the illuminating light color control signals. Color data, so that the operator can control the lighting device to emit desired color light or white light at any time, and the rewritable read-only memory still has memory when the external power cannot be powered, so the selected light color is It can be directly selected at the next use without re-setting, which improves the convenience of operation.

The detailed description and technical content of the present invention will now be described as follows:

Please refer to FIG. 1 for a circuit diagram of a device according to an embodiment of the present invention. The present invention provides a lighting device including a rectifier 10, a power conversion circuit 20, an illumination unit 30, and a microprocessor unit 40. The rectifier 10 is electrically connected to an external switch 50, and the external switch 50 determines whether an external power is obtained from a mains. The external switch 50 can be, for example, a switch power switch (Wall Switch) disposed on a wall. The above is only one example of the invention and is not limited thereto. The rectifier 10 receives the external power and rectifies it into a high voltage direct current. In one embodiment, the rectifier 10 includes a plurality of diodes and has various designs for converting the commercial power having alternating current properties into direct current properties. The high voltage DC. The power conversion circuit 20 is electrically connected to the rectifier 10 to receive the high voltage DC power, and can automatically start and perform a power conversion to output a driving voltage VO and an operating voltage. For example, the power conversion circuit 20 can be a Self-excited power conversion circuit, a heuristic power conversion circuit or a module power conversion circuit (Power module). As described in detail below, when the mains input is input, the high voltage direct current is first rectified by the rectifier 10, and the high voltage direct current passes through a first resistor R1 to a metal oxide (Metal Oxide Semiconductor Field Effect Transistor, MOSFET) Q1. The gate potential of the field effect transistor Q1 is raised and turned on, so that the high voltage direct current is passed through a primary winding N1 of a transformer T1 and the transformer T1 enters an energy storage state, and then passes through a second resistor R2 and a ground. The line GW is electrically connected. When the high voltage direct current passes through the second resistor R2, a partial voltage proportional to the current of the high voltage direct current is generated, and the divided voltage passes through a third resistor R3 to make a transistor. Q2 is turned on to cut off the change of the field effect transistor Q1, that is, from the on state to the off state, the above change causes the transformer T1 to start to enter a release state, so that the power released by a second winding N2 of the transformer T1 is passed through a The first diode D1 is transmitted to a first capacitor C1 and generates the driving voltage VO, and a third winding N3 of the transformer T1 will release a feedback voltage, the feedback voltage The second diode D2 is rectified and stored in a second capacitor C2 and outputs a system voltage VS, and the feedback voltage is also fed back to the transistor Q2 via a fourth resistor R4 and a fifth resistor R5. The transistor Q2 is continuously maintained in an on state until the feedback voltage disappears, and then turned off. Then, the field effect transistor Q1 is turned on again to enter the next cycle, and the driving voltage VO and the system voltage VS are continuously outputted as described above.

In this embodiment, the power conversion circuit 20 further includes a voltage stabilizing unit 21 and a DC current detecting circuit 22, and the voltage stabilizing unit 21 is electrically connected between the microprocessor unit 40 and the system voltage VS. The voltage provided by the system voltage VS is generally higher than the voltage that the microprocessor unit 40 can withstand, so the regulator unit 21 and a third diode D3 are required to output the output for the microprocessor unit 40. The working voltage, wherein the third diode D3 has a function of preventing a reverse current; the DC detecting circuit 22 is electrically connected to a first port A of the microprocessor unit 40 and the system voltage VS, and the DC detecting The circuit 22 includes a sixth resistor R6 and a seventh resistor R7. The sixth resistor R6 and the seventh resistor R7 form a voltage dividing circuit to provide a voltage division proportional to the system voltage VS to the micro processing. The first port A of the unit 40, wherein the first port A has a digital/analog conversion detection function, causes the microprocessor unit 40 to have a function of monitoring the system voltage VS change.

The light emitting unit 30 includes a plurality of light emitting diodes. The light emitting unit 30 is electrically connected to the power conversion circuit 20 and receives the driving voltage VO to drive the light emitting diode. For example, the light emitting unit 30 can include a plurality of red light emitting diodes, a green light emitting diode, a blue light emitting diode and a white light emitting diode respectively emitting red light, green light, blue light and white light, the first three being light The three primary colors, the three illuminating colors are mixed with different illuminating brightnesses to emit different colored lights, and a plurality of combinations of illuminating brightness can emit a plurality of different colored lights and white lights. In an embodiment, white light and In the present embodiment, the white light can be generated by mixing the three primary colors, and a white light can be added to the white light generated by the mixing of the three primary colors to improve the illumination brightness. It is illustrated that the white light emitting diode is an selectively implemented light color combination.

The microprocessor unit 40 is electrically connected to the power conversion circuit 20 and is activated after receiving the operating voltage. The microprocessor unit 40 further has different ports to perform different functions, including a second port B, a first a third port C, a fourth port D, a fifth port E, a sixth port F, a seventh port G and an eighth port H, the second port B outputs a low potential interrupting the third winding N3 The feedback voltage, in turn, interrupts the operation of the self-excited power conversion circuit, and then outputs a power conversion driving signal through the third port C. The power conversion driving signal is a Pulse Width Modulation (PWM). In place of the feedback voltage and changing the on or off state of the transistor Q2 and the field effect transistor Q1 and changing the output voltage value of the driving voltage VO, the microprocessor unit 40 is provided with an adjustment of the driving voltage VO. Function; the fourth port D has a digital/analog conversion detection function, and obtains a voltage conversion value of a half-cycle phase of a commercial rectified signal by continuous detection, and then collects and analyzes Bit interval (ts), a utility power may be determined whether to turn on or off status messages. In the present invention, the microprocessor unit 40 includes a microprocessor and peripheral circuits thereof, wherein the microprocessor has a plurality of built-in memories, such as a temporary memory (RAM) and a read-only memory (ROM). Or an electrically erasable read-only memory (EEPROM), the rewritable read-only memory is an electronic erasable rewritable read-only memory.

In the embodiment, the rewritable read-only memory is taken as an example, and the microprocessor unit 40 determines that the external switch 50 reads the rewritable read-only memory after being turned off after a first interval. After the stored record data is executed, a work mode recognition program is executed, and the work mode recognition program determines that the record data stored in the rewritable read-only memory is a first work mode or a second work mode, the first The working mode is that the microprocessor unit 40 outputs an illumination white light control signal to the light emitting unit 30 at a second interval to cause the light emitting unit 30 to emit an illuminating white light, and further determines whether the external switch 50 is at the second interval. Turning off in time, if yes, writing the record data in the rewritable read-only memory to the second working mode and a pair of light color data that should illuminate the white light control signal, if not, then The microprocessor unit 40 sends a plurality of first color control signals to the light emitting unit 30 according to a phase timing. The light emitting unit 30 receives the first color control signal and emits a plurality of different light colors C. _n , the light color C _n has n, and n is a parameter related to resolution.

The second working mode is that the microprocessor unit 40 outputs the illumination white light control signal or the first color control signal to the light emitting unit 30 according to the light color data in the recorded data, so that the light emitting unit 30 emits a phase. Corresponding to the illumination white light or a light color C _i , wherein the selection of the light color data corresponding to the first color control signal is when the external switch 50 is not turned off during the second interval, the micro The processor unit 40 sends a plurality of first color control signals to the light emitting unit 30 according to the phase timing. After receiving the first color control signal, the light emitting unit 30 emits a plurality of different light colors C _n when the light emitting unit 30 When the light color C _i is issued, the microprocessor unit 40 determines whether the external switch 50 is turned off, and if so, writes the record data in the rewritable read-only memory to the second working mode and Corresponding to the light color data of the first color control signal, C _i represents the light color emitted by the ith timing, and the light color data of the first color control signal corresponds to the light color C _i . The color control signal refers to that the microprocessor unit 40 outputs a pulse width adjustment of a ratio of different power on/off times at the fifth port E, the sixth port F, the seventh port G, and the eighth port H, respectively. a variable control signal (PWM), wherein the microprocessor unit 40 determines the time ratio of the light level and the color control signal in which the power is turned on/off in a byte variable, and determines the byte variable of the light level as a light order message. For example, a one-byte scale information includes 8 bits, which can determine the proportion of time that the color control signal emits 256 power-on/off times, so that the light-emitting unit 30 emits 256 kinds of brightness, so the light-order information can be illuminated. Corresponding to the brightness, the eighth port H emits a pair of white light brightness compensation signals that should compensate white light, and the light color data is a message data including three primary color levels and white light levels. The microprocessor unit 40 emits a color control signal to control the light-emitting unit 30 according to the three primary colors in the light color data and the white light-level information, so as to respectively emit three primary colors of different brightness and white light, and after mixing, a light and a light can be emitted. The color of the corresponding color of the color data, it is necessary to specifically indicate that when the white light is emitted, the three primary colors emit light with similar brightness, and the white light of the illumination is blue or yellowish due to the difference in brightness of the three primary colors, and the light color of the white light is illuminated. The data is set when an initial program is executed. In this embodiment, a ninth port I and a tenth port J of the microprocessor unit 40 are respectively activated by receiving a positive potential and a negative potential of the operating voltage.

In the present invention, the resolution is related to the light level. For example, in one embodiment of the present invention, the three primary colors are divided into 256 light levels, and after mixing with each other, 768 colors can be generated, so n=768, and n. It is related to the byte used by the microprocessor unit 40, and thus is not a fixed value.

It should be noted that the light color C _n is a spectrum, the light color C _i is one of the light colors of the spectrum, and the color change interval time (t) is the duration of a single color control signal, and the different light is different. There are n colors, so one color cycle time of emitting a plurality of different colors is equal to (t) × (n), where (t) is the phase interval of detecting the commercial power via the microprocessor unit 40. (ts) and using the multiple of the phase interval time (ts) as the color change interval time (t), and the sequence variable (i) of the light color is equal to a variable of 0 to n, and the plurality of color control signals are At the beginning (i) = 0, after each interval of the color change interval (t), the light level state of the three primary colors is changed once, and the color sequence variable is increased by one digit, that is, (i)=i +1 until issued When n different colors of light, (i) = n, also complete a color cycle, where C _{n is} represented as a set of colors from (i) = 0 to (i) = n, and C _{i is} expressed as (i) =0 to (i)=n one of the colors, and then after completing a color cycle, (i)=0 and enter the next color cycle again. The color change interval (t) is a time unit. When the phase interval time (ts) in the commercial phase state cannot be obtained, the color change interval time (t) can also be obtained by using a time reference. For example, when the external power is always flowing, the color change interval (t) is obtained by a quartz crystal circuit.

In the present invention, the lighting device further includes a mains detecting unit 60, a constant current unit 70, and an internal power supply unit 80. The mains detecting unit 60 is electrically connected between the mains and the rectifier 10 and includes an output. The contact point is electrically connected to the fourth terminal D of the microprocessor unit 40. The mains detection unit 60 includes an eighth resistor R8 electrically connected to a live line L, and is electrically connected to The ninth resistor R9 of the zero line N and the tenth resistor R10 electrically connected to the ground line GW, when the mains is positive phase due to the rectifying action of the rectifier 10, the live line L is a positive potential and the neutral line The N potential is close to the ground GW potential, so the electrical connection point between the eighth resistor R8 and the tenth resistor R10 outputs a positive phase positive voltage signal proportional to a positive half cycle of the alternating current of the utility power. When the mains is in a negative phase, the neutral line N is a positive potential and the potential of the live line L is close to the potential of the ground line GW. Therefore, the electrical connection point between the ninth resistor R9 and the tenth resistor R10 outputs the same as the mains. One negative negative phase positive voltage signal proportional to the negative half cycle of the alternating current The positive phase positive voltage signal is mixed with the negative phase positive voltage signal to form a rectified mains signal, wherein the voltage divider of the eighth resistor R8, the ninth resistor R9 and the tenth resistor R10 is rectified The magnitude of the mains signal is reduced to the mains rectification signal.

It should be noted that the voltage level detectable by the microprocessor unit 40 is much lower than the voltage level of the mains. Therefore, the microprocessor unit 40 needs to reduce the voltage level of the mains by the mains detecting unit 60. After the value, the voltage amplitude and phase information of the mains can be detected.

The constant current unit 70 is electrically connected between the light emitting diodes and the microprocessor unit 40, and includes a first constant current electronic switch 71, a second constant current electronic switch 72, and a third constant current electron. The switch 73 and a fourth constant current electronic switch 74 are electronic switch electronic circuits that can be controlled to be turned on or off. The microprocessor unit 40 outputs the pulse width modulation control signal (PWM). In order to control the constant current electronic switches, the light emitting unit 30 controls the light emitting brightness according to a corresponding power-on/off time ratio, and the current amount is zero when controlled to be turned off, and is automatically limited when controlled to be turned on. The conduction current flow rate is within a fixed specification range. It should be noted that the constant current unit 70 has various designs, including a separate circuit design, a constant current integrated circuit (IC) design, or built in the microprocessor. The design of unit 40. The internal power supply unit 80 is electrically connected to the microprocessor unit 40. Specifically, when the external power is interrupted, the driving voltage VO cannot be generated. Therefore, it is conventional to control the lighting device. The external power is interrupted. However, the present invention uses the internal power supply unit 80 to supply power to modify the recorded data after the external power is interrupted. The internal power supply unit 80 is interrupted after the external power is interrupted. An internal power supply is provided to the microprocessor unit 40 to maintain the operation of the rewritable read-only memory during the writing of the recorded data. In this embodiment, the internal power supply unit 80 is a capacitor, wherein the capacitor A third capacitor C3 is taken as an example.

Please refer to FIG. 2 for a schematic flow chart of a process according to an embodiment of the present invention. The present invention provides a light color control method for a lighting device, which includes the following steps:

Step S1: providing a lighting device electrically connected to an external switch 50, the external switch 50 determining whether to obtain an external power from a mains, the lighting device comprising an electrical connection with the external switch 50 and rectifying the external power A high voltage DC power rectifier 10, a power conversion circuit 20 electrically connected to the rectifier 10, a light emitting unit 30 electrically connected to the power conversion circuit 20, and a power connection circuit 20 are electrically connected to the power conversion circuit 20 and have a The microprocessor unit 40 can erase the read only memory.

Step S2: Turning on the external switch 50, the current flows through the rectifier 10 and causes the power conversion circuit 20 to receive the high voltage direct current and perform a power conversion to output an operating voltage and a driving voltage VO. The microprocessor unit 40 After accepting the operating voltage, an initial procedure is performed.

Step S3: The microprocessor unit 40 outputs a low-brightness white light control signal at a first interval. The light-emitting unit 30 receives the low-brightness white light control signal and emits a low-brightness white light, and determines whether the external switch 50 is in the The first interval time is the duration of the low-brightness white light emitted by the light-emitting unit 30, which is set when the microprocessor unit 40 executes the initial program. The step S3 further includes the following steps: Step S3A: If the external switch 50 is turned off during the first interval, the microprocessor unit 40 resets a record data stored in the rewritable read-only memory. And writing the record data in the rewritable read-only memory to a first working mode and a pair of light color data that should illuminate the white light control signal.

Step S4: If the external switch 50 continues to be turned on when the first interval time is exceeded, the microprocessor unit 40 reads the record data stored in the rewritable read-only memory and executes a working mode recognition program. The working mode recognition program determines that the record data stored in the rewritable read-only memory is the first working mode or a second working mode.

Step S5: If the record data is in the first working mode, the microprocessor unit 40 outputs an illumination white light control signal at a second interval, and the illumination unit 30 receives the illumination white light control signal and emits an illumination white light. And determining whether the external switch 50 is turned off during a second interval time, wherein the second interval time is a duration for emitting the illumination white light, which is set when the microprocessor unit 40 executes the initial program. The step S5 further includes the following steps: Step S5A: If it is determined that the external switch 50 is not turned off within the second interval, the microprocessor unit 40 issues a plurality of first color control signals according to a phase timing to In the embodiment, the phase timing can be further defined as follows: a color change interval (t) synchronized with the phase of the mains, sequence: sequence variable (i) of the color, the timing is provided A function of color change with the phase of the mains. After receiving the first color control signal, the light emitting unit 30 emits a plurality of different light colors C _n , the light color C _n has n, n is a parameter related to a resolution, and it is determined whether the external switch 50 is Turning off; when the light emitting unit 30 emits the light color C _i , the microprocessor unit 40 determines whether the external switch 50 has been turned off, and if so, writes the record in the rewritable read only memory. The data is the second working mode and a pair of light color data corresponding to the first color control signal, wherein the light color data corresponding to the first color control signal is the pair of light colors C _i , C _i indicated by the i The color of the light emitted by the timing; step S5B: if the external switch 50 is turned off during the second interval, writing the record data to the second working mode and the pair in the rewritable read-only memory The light color data of the white light control signal should be illuminated.

Step S6: If the record data is in the second working mode, the microprocessor unit 40 reads the light color data in the record data, and outputs the illumination white light control signal corresponding to the light color data or the first The illumination control unit 30 receives the illumination white light control signal or the first color control signal and sends the corresponding illumination white light or the light color C _i .

In summary, since the working mode in the rewritable read-only memory and the light color data of the corresponding illuminating light color control signal can be recorded, reset and read, the operator can control the lighting at any time. The device emits a desired light color, and the rewritable read-only memory still has memory when the external power cannot be powered, so the selected light color can be directly selected at the next use without resetting, and the operation is improved. Convenience.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made by the scope of the present application should remain within the scope of the patent of the present invention.

S1~S6‧‧‧Steps

10‧‧‧Rectifier

20‧‧‧Power conversion circuit

21‧‧‧Stabilizer

22‧‧‧DC detection circuit

30‧‧‧Lighting unit

40‧‧‧Microprocessor unit

50‧‧‧External switch

60‧‧‧mains detection unit

70‧‧‧ constant current unit

71‧‧‧First constant current electronic switch

72‧‧‧Second constant current electronic switch

73‧‧‧ Third constant current electronic switch

74‧‧‧fourth constant current electronic switch

80‧‧‧Internal power supply unit

VO‧‧‧ drive voltage

VS‧‧‧ system voltage

R1‧‧‧first resistance

R2‧‧‧second resistance

R3‧‧‧ third resistor

R4‧‧‧fourth resistor

R5‧‧‧ fifth resistor

R6‧‧‧ sixth resistor

R7‧‧‧ seventh resistor

R8‧‧‧ eighth resistor

R9‧‧‧ ninth resistor

R10‧‧‧10th resistor

Q1‧‧‧ Field Effect Crystal

Q2‧‧‧Optoelectronics

T1‧‧‧ transformer

N1‧‧‧ primary winding

N2‧‧‧second winding

N3‧‧‧ third winding

D1‧‧‧First Diode

D2‧‧‧ second diode

D3‧‧‧ third diode

C1‧‧‧first capacitor

C2‧‧‧second capacitor

C3‧‧‧ third capacitor

A‧‧‧first port

B‧‧‧Second port

C‧‧‧ third port

D‧‧‧fourth port

E‧‧‧ fifth port

F‧‧‧ sixth port

G‧‧‧ seventh port

H‧‧‧ eighth port

I‧‧‧ ninth port

J‧‧‧10th port

L‧‧‧FireWire

N‧‧‧Zero

GW‧‧‧ ground wire

FIG. 1 is a schematic diagram of a device circuit according to an embodiment of the present invention. FIG. 2 is a schematic flow chart showing the steps of an embodiment of the present invention.

S1~S6‧‧‧Steps

Claims (8)

A light color control method for a lighting device includes the following steps: Step S1: providing a lighting device electrically connected to an external switch, the external switch determining whether to obtain an external power from a utility, the lighting device including an external device a rectifier electrically connected and rectifying the external power into a high voltage direct current, a power conversion circuit electrically connected to the rectifier, a light emitting unit electrically connected to the power conversion circuit, and an electrical circuit of the power conversion circuit a microprocessor unit connected to and having a rewritable read-only memory; step S2: turning on the external switch, the current flowing through the rectifier and causing the power conversion circuit to accept the high voltage direct current and performing a power conversion to output a An operating voltage and a driving voltage, the microprocessor unit performs an initial process after receiving the operating voltage; and the step S3: the microprocessor unit outputs a low-brightness white light control signal at a first interval, the lighting unit accepts the A low-brightness white light control signal emits a low-brightness white light, and determines whether the external switch is in the Shutdown in an interval; step S4: if the external switch continues to be turned on when the first interval time is exceeded, the microprocessor unit reads a record data stored in the rewritable read-only memory, and then executes a working mode recognition program for determining that the record data stored in the rewritable read-only memory is a first working mode or a second working mode; and step S5: if the record data is the first In the working mode, the microprocessor unit outputs an illumination white light control signal at a second interval, the illumination unit receives the illumination white light control signal, emits an illumination white light, and determines whether the external switch is in a second interval time. Turning off, if yes, writing the record data in the rewritable read-only memory to the second working mode and a pair of light color data that should illuminate the white light control signal, and if not, the microprocessor The unit sends a plurality of first color control signals to the light emitting unit according to a phase timing, and the light emitting unit emits the plurality of different lights after receiving the first color control signal C _n, C _n of the light color there are n, and n is a parameter related to resolution, and determines whether or not the external switch is turned off, when the light emitting unit emits a light color C _i, determines if the microprocessor unit When the external switch is turned off, the record data is written in the rewritable read-only memory for the second working mode and a pair of light color data corresponding to the first color control signal, wherein C _{i is} represented by the ith The color of the light emitted by the timing, and the light color data of the first color control signal corresponds to the light color C _i ; and step S6: if the recorded data is the second working mode, the microprocessor unit reads The light color data in the record data is used to output the illumination white light control signal or the first color control signal, and the illumination unit receives the illumination white light control signal or the first color control signal and sends the corresponding illumination white light or the Light color C _i . The light color control method of the lighting device according to claim 1, wherein the step S3 further comprises the following steps: Step S3A: if the external switch is turned off during the first interval, the microprocessor unit is heavy The record data stored in the rewritable read-only memory is set, and the record data is written in the rewritable read-only memory for the first working mode and a pair of light color data that should illuminate the white light control signal. A lighting device includes: a rectifier electrically connected to an external switch that determines whether an external power is obtained from a mains, and receives the external power and rectifies into a high voltage direct current; a power conversion circuit electrically connected to the rectifier After receiving the high-voltage direct current, a driving voltage and an operating voltage can be automatically started and executed, and a driving unit includes a plurality of light-emitting diodes, and the light-emitting unit is electrically connected to the power conversion circuit, and Receiving the driving voltage to drive the light emitting diode; and a microprocessor unit having an rewritable read-only memory, electrically connected to the power conversion circuit and receiving the operating voltage, being activated and executing an initial program And then sending a low-brightness white light signal at a first interval and determining whether the external switch is turned off. If yes, resetting a record data in the rewritable read-only memory, and if not, reading the After rewritable the record data stored in the read-only memory, a work pattern recognition program is executed, and the work pattern recognition program is judged The record data stored in the rewritable read-only memory is a first working mode or a second working mode, and if the recorded data is the first working mode, an illuminating white light control signal is outputted at a second interval to The illuminating unit is configured to cause the illuminating unit to emit an illuminating white light, and further determine whether the external switch is turned off during the second interval, and if so, write the record data in the rewritable read-only memory For the second working mode and a pair of light color data that should illuminate the white light control signal, if not, the microprocessor unit sends a plurality of first color control signals to the light emitting unit according to a phase timing, and the light emitting unit accepts After the first color control signal, a plurality of different light colors C _{n are} generated, and the light color C _n has n, n is a resolution-related parameter, and it is determined whether the external switch is turned off, when the light-emitting unit when emitting a light color C _i, if it is judged that the external switch has been turned off, to the erasable read-only memory for the log data written in the second operating mode and a control signal corresponding to the first color Light color information, wherein, C _i represents the i th color light emitted by a timing and control signal corresponding to the first color data and the light color of the light color C corresponding to _i, if the log data for the second The working mode outputs the corresponding white light control signal or the first color control signal to the light emitting unit according to the light color data in the record data to emit the corresponding illumination white light or the light color C _i . The lighting device of claim 3, further comprising an internal power supply unit electrically connected to the microprocessor unit, the internal power supply unit being turned off at the external switch Thereafter, an internal power source is provided to the microprocessor unit to maintain normal operation during writing of the rewritable read-only memory. The lighting device of claim 4, wherein the internal power supply unit is a capacitor. The illuminating device of claim 3, wherein the rewritable read-only memory is an electronic erasable rewritable read-only memory. The illumination device of claim 3, wherein the light emitting diode is selected from a red light emitting diode, a green light emitting diode, a blue light emitting diode, and a white light emitting diode. The group formed. The lighting device of claim 3, further comprising a constant current unit electrically connected between the light emitting diode and the microprocessor unit.