TWM457121U - Adjustable LED lighting system and its driving device - Google Patents

Description

Dimmable light emitting diode lighting system and driving device thereof

The present invention is applied to a lighting system of a light-emitting diode, in particular to a dimmable light-emitting diode lighting system and a driving device thereof.

At present, the most common fluorescent lighting system, in order to achieve different brightness choices, will use a combination of the number of bright tubes of different fluorescent tubes to select the brightness (because the fluorescent tube can not be dimmed, only two states can be bright and extinguished), but In this way, the brightness of the illumination will be uneven, and this combination will be limited by the number of lamps that the lamp can support, so that the combination of each type of lamp will be limited.

In the current situation of paying attention to environmental protection and energy conversion rate, the luminous diode has better electro-optical conversion efficiency than incandescent bulbs and fluorescent lamps. Therefore, in the application of lighting systems, LED lamps have gradually replaced the trend of incandescent lamps and fluorescent lamps. At present, the design of the driving device of the LED lamp is focused on how to stably drive the LED and keep its brightness constant when the input voltage changes. In this way, if the brightness needs to be adjusted, a dimmer matching the driving device must be additionally added to generate a control signal for adjustment. However, with the prevalence of light-emitting diodes, the design of dimmers has become increasingly diverse, making each type of drive device not effectively applicable to dimmers of various specifications. Therefore, the cooperation of the dimmer and the driving device has its limitations and difficulties in practical use.

In addition, with the current dimming design of the light-emitting diode, it is difficult to directly replace the existing lighting device with existing dimming function, and the general user does not modify or re-purchase the existing one for installing the light-emitting diode lamp. House wiring, lamps, switches and other devices used in incandescent bulbs and daylight lamps. Therefore, the light-emitting diode lamp has the advantages of energy saving and environmental protection. However, in the current switch and lamp device, the light-emitting diode lamp has only two options of light and light, and the brightness can not be selected and switched. .

Therefore, how to stably drive the LED driving and replace the existing lighting with the LED driving lamp in the LED driving design application without changing the existing wiring, existing lamps or devices. In addition to the original function of the LED driving lamp, and the addition of the dimming selection function, the lamp is a problem to be solved.

In view of this, the main purpose of the present invention is to provide a dimmable light-emitting diode lighting system, a driving device and a driving method thereof, and to enable the light-emitting diode without changing the existing wiring, existing switches or devices. The driving device has a dimming function, which in addition to retaining the original function of the LED lamp, and adding a dimming selection function.

In order to achieve the above object, the present invention provides a light-emitting diode lighting system comprising a light-emitting diode lamp set, a switch and a driving device; the light-emitting diode lamp set is configured to receive an electric signal and generate a bright light. The switch is connected to a power source for being controlled to be closed for output for a predetermined period of time to output a pulse signal; the driving device is electrically connected to the switch and the LED group for turning on the switch Receiving the power of the power source and converting it into an electrical signal for the light-emitting diode lamp group to drive the light-emitting diode lamp group to generate a bright light; further, the driving device has a controller, and the controller stores There is a total brightness value, a preset illumination mode and a brightness adjustment mode, and when the driving device receives the pulse signal, the light-emitting diode lamp group is driven to generate light in one of the modes. The preset illumination mode drives the LED lamp set to generate bright light having a total brightness value stored by the controller; the brightness adjustment mode drives the LED lamp set to generate bright light, and gradually changes the brightness. Brightness, until the pulse signal is received again, recording the brightness value of the light generated by the current LED lamp set, and replacing the recorded brightness value with the previously stored total brightness value, and driving the light emitting diode The light group produces a bright light with a new total brightness value.

According to the above concept, the present invention further provides a driving device for driving at least one light emitting diode to generate light, and includes a power conversion circuit and a controller; wherein the power conversion circuit is coupled to a power source at one side, The other side is connected to the at least one light emitting diode for converting the electrical energy of the power source into an electrical signal and then supplying the at least one light emitting diode to drive the at least one light emitting diode to generate bright light; The controller is electrically connected to the power conversion circuit, And storing a total brightness value, a preset illumination mode, and a brightness adjustment mode; when the controller detects a pulse signal, controlling the power conversion circuit to drive the at least one light emitting diode in one of the modes Bright light. The preset illumination mode controls the power conversion circuit to drive the at least one LED to generate bright light having a total brightness value stored by the controller; the brightness adjustment mode drives the at least one LED to generate light And gradually changing the brightness of the light until the pulse signal is received, recording the brightness value of the light generated by the at least one light-emitting diode, and replacing the recorded brightness value with the previously stored total brightness value, and controlling The power conversion circuit drives the at least one light emitting diode to produce bright light having a new total brightness value.

According to the above concept, the light-emitting diode lamp set includes a plurality of first light-emitting diodes and a plurality of second light-emitting diodes, and the light color of each of the second light-emitting diodes is different from each of the first light-emitting diodes. The light color of the diode; the controller further stores a first brightness ratio, a second brightness ratio, and a chromaticity adjustment mode, wherein the brightness ratio refers to the brightness value of the generated light occupies the total brightness value. The ratio of the ratio of the first illumination dipoles to the illumination having the first luminance ratio, and the second LEDs having the ratio a brightness ratio of two brightness ratios; the chromaticity adjustment mode drives the illuminating diode lamp to generate bright light, and gradually changes the first illuminating diodes and the second illuminating diodes in the illuminating diode lamp The brightness ratio is such that when the pulse signal is received again, the brightness ratios of the first light-emitting diodes and the second light-emitting diodes are recorded, and the recorded brightness ratios are respectively replaced by the first brightness stored. Ratio and a second luminance ratio, and continuing to drive the plurality of first light-emitting diode and such a second light-emitting diode to generate light having a new luminance scale.

According to the above concept, the controller further stores a full-bright mode for driving the LED lamp to generate the brightness of the maximum brightness value at the rated power.

Thereby, through the above design, the driving device of the light emitting diode has a dimming function without changing the existing wiring, the existing switch or the device. In this way, in addition to the original function of the light-emitting diode lamp, the user only needs to switch through the switch to perform the dimming selection.

10‧‧‧Lighting diodes

20‧‧‧ switch

30‧‧‧ drive

32‧‧‧Power conversion circuit

34‧‧‧ Controller

341‧‧‧Optocoupler

342‧‧‧Detection circuit

343‧‧‧Programmable chip

40‧‧‧Lighting diodes

41‧‧‧First Light Emitting Diode

42‧‧‧Second light-emitting diode

50‧‧‧ switch

60‧‧‧ drive

62‧‧‧Power conversion circuit

64‧‧‧ Controller

642‧‧‧Detection circuit

643‧‧‧Programmable chip

70‧‧‧Switch structure

72‧‧‧Switching switch structure

74‧‧‧Automatic reset type normally closed switch structure

76‧‧‧ diode

100‧‧‧Power supply

1 is a circuit block diagram of a first embodiment of the present invention; FIG. 2 is a circuit block diagram of a second embodiment of the present invention; and FIG. 3 is a circuit diagram of a switch of the third embodiment of the present invention.

In order to explain the present invention more clearly, the preferred embodiment will be described in detail with reference to the drawings.

Referring to FIG. 1 , the dimmable LED lighting system of the preferred embodiment of the present invention includes a light emitting diode lamp set 10 , a switch 20 , and a driving device 30 . Wherein: the light-emitting diode lamp set 10 is installed on a wall or a ceiling of a building (not shown), and has a plurality of light-emitting diodes for continuously receiving electrical signals to generate the light-emitting diodes. Bright light provides user illumination. In addition, the LED lamp set 10 can generate bright light having a maximum brightness value below its rated power, and adjusts the brightness of the generated light according to the difference of the received electric signal or the difference of the clock.

The switch 20 is mounted on the wall of the building and is connected to a power source (ie, utility power) 100 for controlledly closing for a predetermined time to output a pulse signal. In this embodiment, the predetermined time set is 3 seconds, that is, when the user cuts off the switch 20 and turns on quickly within 3 seconds to cause a change in the waveform of the passed electric energy, it is determined. To output a pulse signal.

The driving device 30 can be integrated with the light-emitting diode lamp set and installed on the wall surface or the ceiling of the building. The driving device 30 includes a power conversion circuit 32 and a controller 34. The power conversion circuit 32 is electrically connected to the switch 20 and the LED group 10, and is coupled to the power source 100 through the switch 20 for receiving power of the power source 100 and converting when the switch 20 is turned on. The electrical signal is supplied to the light-emitting diode lamp set 10 to drive the light-emitting diode lamp set 10 to generate a bright light. In this embodiment, the power conversion circuit 32 is designed based on a Pulse Width Modulation (PWM) circuit and is transmitted through a pulse width modulation. The mode is changed to adjust the electrical signal clock width of the light-emitting diode lamp set 10. Of course, in actual implementation, the power conversion circuit 32 can also be designed to adjust the size of the electrical signal or other circuit for adjusting the electrical signal. The controller 34 is electrically connected to the power conversion circuit 32 and includes an optical coupler 341, a detecting circuit 342, and a programmable chip 343. The optocoupler is electrically coupled to the detector circuit 342 and the programmable chip 343, and the detection circuit 342 is coupled to the programmable chip 343 in an optically coupled manner. The detecting circuit 342 is electrically connected to the switch 20 for detecting whether the switch 20 is quickly turned off to output the pulse signal, and transmitting the detection result to the programmable chip 343 through the optical coupler 341. . The programmable chip 343 is electrically connected to the power conversion circuit 32, and stores a total brightness value, a preset illumination mode, and a brightness adjustment mode, and controls the electrical signal output by the power conversion circuit 32 in one of the modes. The LED light source 10 is driven to generate bright light, and the detection circuit is used to detect whether the pulse signal is used as a basis for mode switching. Wherein: the preset illumination mode controls the power conversion circuit 32 to drive the LED lamp set 10 to generate the bright light having the total brightness value stored by the programmable chip 343.

The brightness adjustment mode controls the power conversion circuit 32 to drive the LED group 10 to generate bright light, and gradually changes the brightness of the light until the detection circuit 342 detects the pulse signal (at this time, the power conversion circuit 32) When the pulse signal is received, the brightness value of the light generated by the LED group 10 is recorded, and the recorded brightness value is substituted for the total brightness value originally stored in the programmable chip 343, and is driven. The light-emitting diode lamp set 10 produces bright light having a new total brightness value.

In this way, the light-emitting diode lamp 10 can be driven to generate desired light through the driving circuit. After the switch 20 is turned on, the programmable chip 343 controls the power conversion circuit 32 to preset the illumination. The mode drives the light-emitting diode lamp set 10. That is, the light-emitting diode lamp set 10 will produce bright light having the total brightness value.

When the user wants to adjust the brightness of the LED set 10, the switch 20 is quickly turned off to generate the pulse signal. After the detection circuit 342 detects the pulse signal, the detection result is transmitted to the programmable chip 343 through the optical coupler 341, and the programmable chip 343 is switched to the brightness adjustment mode to control the power conversion circuit 10 to drive. The LED lamp set 10. In other words, after the user quickly turns off the switch 20, the light-emitting diode lamp set 10 generates bright light that gradually changes the brightness value. In the present embodiment, after the light is gradually brightened to the maximum brightness value, it is gradually darkened to the minimum brightness value (ie, close to the extinguished state), and then the cycle is gradually brightened. Of course, in the implementation, it may be the first to gradually dim and then gradually brighten, or to repeat the process of gradually brightening or dimming, to achieve the purpose of gradually changing the brightness value. Then, during the process of changing the brightness, when the user wants to stop the brightness of the light generated by the LED group 10 to the current brightness, the switch 20 is quickly turned off again to generate the pulse signal. After receiving the signal transmitted by the detecting circuit 342 when the pulse signal is received, the program chip 343 records the brightness value of the light generated by the light-emitting diode lamp group 10, and replaces the recorded brightness value with the original storage. The total brightness value is controlled, and the power conversion circuit 32 is controlled to drive the light-emitting diode lamp group 10 to generate bright light having a new total brightness value.

In this way, through the design of the driving device, the user can pass the switch in addition to the original function of turning on and off the light-emitting diode lamp set 10 without changing the existing wiring and the existing switch. By switching, the dimming selection of the LED set 10 can be performed.

In addition, referring to FIG. 2, the dimmable LED lighting system of the second preferred embodiment of the present invention includes a light-emitting diode lamp set 40, a switch 50, and a driving device in the same connection relationship as the foregoing embodiment. Device 60. The difference from the above is that the LED group 40 includes a plurality of first LEDs 41 and a plurality of second LEDs 42 and the color of each of the second LEDs 42 Different from the light color of each of the first light-emitting diodes 41. For example, the light color of the first light-emitting diode 41 is a cool color system (such as white light, blue light, etc.), and the light color of the second light-emitting diode 42 is a warm light color (such as yellow light, red). Light, etc.). One side of the output signal of the power conversion circuit 62 of the driving device 60 is connected to the first LEDs 41 and the second LEDs 42 to control the LEDs 41. The brightness ratio of 42 is the ratio of the brightness value of the generated bright light to the total brightness value, so as to adjust the color temperature of the light generated by the light-emitting diode lamp group 40.

In order to achieve the above purpose, the programmable chip 643 of the controller 64 stores a first brightness ratio, a second brightness ratio, and the like, in addition to the total brightness value, the preset illumination mode, and the driving data of the brightness adjustment mode. A chroma adjustment mode. And in the preset illumination mode and the brightness adjustment mode, the first illumination of the LED group 40 The diode 41 generates bright light having the first brightness ratio, and the second light-emitting diodes 42 generate light having the second brightness ratio, and when the brightness is adjusted, the first light-emitting diodes The ratio of brightness of 41 to the second light-emitting diodes 42 remains unchanged. In this way, the driving circuit 60 can be designed to switch to the chromaticity adjustment mode by detecting the pulse signal before or after the brightness adjustment mode is executed, and in the chromaticity adjustment mode, The programmable chip 643 controls the power conversion circuit 62 to drive the LED device 40 to generate bright light, and gradually changes the first LEDs in the LED lamp 40 while the total brightness value is constant. The brightness ratio of the body 41 and the second LEDs 42 until the detection circuit 642 detects the pulse signal again (ie, when the user wants to quickly close the switch 50 using the current brightness ratio) Recording the current brightness ratios of the first light-emitting diodes 41 and the second light-emitting diodes 42 respectively, and replacing the previously recorded brightness ratios and the second brightness ratios, respectively, and continuing to drive The first light-emitting diodes 41 and the second light-emitting diodes 42 generate bright light having a new luminance ratio. In this way, through the above design, the user only needs to switch the switch 50 to select the dimming and color adjustment.

In addition, in order to make the user more convenient in the use of the illumination, the programmable chips 343, 643 of the above embodiments may further store a full-bright mode, and before the predetermined illumination mode (ie, start the switch 20, When the 50 is turned on, the full light mode is executed, or after the predetermined lighting mode, the pulse signal is detected to switch to the full light mode. In the full-bright mode, the programmable chips 343 and 643 control the power conversion circuits 32 and 62 to drive the LEDs 10 and 40 to generate the maximum brightness value under the rated power without passing through the brightness. Adjustments can quickly and easily meet the needs of users with high-brightness lighting.

Furthermore, in the foregoing embodiments, when the mode is switched, the LED groups 10 and 40 are extinguished due to the blocking state of the switches 20 and 50, which causes the user's eyes to be easily turned off due to the rapid lighting. And discomfort. Therefore, the switches 20 and 50 of the foregoing embodiments may be replaced with the switch 70 as shown in FIG. 3, which includes a switch switch structure 72, an automatic reset type normally closed switch structure 74, and a diode 76. The switch structure 72 is connected in series with the auto-return normally-closed switch structure 74, and the diode 76 is connected in parallel with the auto-return normally-closed switch structure 74. In this way, the user can control the switch structure to continuously turn ON or OFF the power of the power source 100, and perform the automatic reset type normally closed switch structure 74. Mode switching. In other words, when the user presses the auto-return type normally-closed switch structure 74, in addition to the effect of generating the pulse signal, the design of the diode 76 will cause the AC power generated by the power source 100 to be generated. The positive half wave flows through the diode 38 to the driving devices 30, 60, and the negative half wave is blocked, so that the driving device 30, 60 is pressed against the automatic reset type normally closed by the user. When the switch structure 74 is used, the positive half wave power can still be received, and the light emitting diode lamp group 10, 40 can still be driven to generate a slightly dark light, so that the user does not have eye discomfort when performing mode switching. The situation arises.

In addition, the above description is only for the preferred embodiment of the present invention. Except for the above-mentioned structure, the equivalent structure and method variations of the present invention and the scope of the patent application are included in the patent scope of the present invention.

10‧‧‧Lighting diodes

20‧‧‧ switch

30‧‧‧ drive

32‧‧‧Power conversion circuit

34‧‧‧ Controller

341‧‧‧Optocoupler

342‧‧‧Detection circuit

343‧‧‧Programmable chip

100‧‧‧Power supply

Claims (13)

A dimmable light emitting diode lighting system comprising: a light emitting diode lamp set for receiving an electrical signal and generating a bright light; a switch connected to a power source for being controlled within a predetermined time The ground is closed to output a pulse signal; and a driving device is electrically connected to the switch and the LED lamp set for receiving power of the power source and converting the electric signal into the electric light for the light when the switch is turned on a diode lamp set for driving the LED lamp set to generate a bright light; in addition, the driving device has a controller, and the controller stores a total brightness value, a preset illumination mode, and a brightness adjustment mode. And driving the LED light group to generate bright light in one of the modes; wherein: the preset illumination mode is to drive the LED light group to generate light having a total brightness value stored by the controller; the brightness adjustment mode Driving the light-emitting diode lamp group to generate bright light, and gradually changing the brightness of the bright light until the pulse signal is received, recording the brightness of the light generated by the light-emitting diode lamp group at the moment , And the luminance value of the original record of the substituent of the total brightness value is stored, and drives the light emitting diode lamps generate light having a new total luminance value. The dimmable LED lighting system of claim 1, wherein the driving device further comprises a power conversion circuit, and the controller comprises a coupling detecting circuit and a programmable chip, and the The total brightness value, the preset illumination mode, and the brightness adjustment mode are stored in the program chip; the power conversion circuit is electrically connected to the power supply, and the other side is connected to the LED light group for receiving The power of the power source is converted into an electrical signal for the light emitting diode lamp set; the detecting circuit is electrically connected to the mode switch to detect whether the mode switch generates the pulse signal; the programmable chip The power conversion circuit is electrically connected to the power conversion circuit to control the power conversion circuit to drive the LED light source to generate light in one of the modes when the detection circuit detects that the mode switch outputs the pulse signal. The dimmable LED lighting system of claim 2, the controller further comprising an optocoupler electrically connecting the detecting circuit and the programmable chip, and the detecting circuit and the programmable chip The optical coupler is coupled by optical coupling. The dimmable LED lighting system of claim 1, wherein the LED lamp set comprises a plurality of first light emitting diodes and a plurality of second light emitting diodes, and each of the plurality of light emitting diodes The light color of the second light emitting diode is different from the light color of each of the first light emitting diodes; the controller further stores a first brightness ratio, a second brightness ratio, and a chromaticity adjustment mode, and the The brightness ratio refers to a ratio of the brightness value of the generated bright light to the total brightness value; and in the preset illumination mode and the brightness adjustment mode, the first light emitting diodes have the first brightness ratio Bright light, and the second light-emitting diodes generate light having the second brightness ratio; the color adjustment mode drives the light-emitting diode lamp to generate light, and gradually changes the light-emitting diode lamp And comparing the brightness ratios of the first light-emitting diodes and the second light-emitting diodes until the pulse signals are received, recording the brightness of the first light-emitting diodes and the second light-emitting diodes Ratio, and the recorded brightness ratios respectively replace the previously stored first brightness ratio and the second brightness ratio, and continue to drive the first light-emitting diodes and the second light-emitting diodes to have a new bright The proportion of light. The dimmable LED lighting system of claim 1, wherein the controller further stores a full-bright mode for driving the LED lamp to generate a brightness of a maximum brightness value at a rated power. The dimmable LED lighting system of claim 1, wherein the predetermined time is 3 seconds. The dimmable LED lighting system of claim 1, wherein the switch comprises a switch switch structure connected in series and an auto-return normally closed switch structure, and one of the switch structures and the power source The connection is connected, and the other switch structure is electrically connected to the driving device. The dimmable LED lighting system of claim 7, wherein the switch further comprises a diode, and the diode is connected in parallel with the auto-return normally-closed switch structure. a driving device for driving at least one light emitting diode to generate bright light, and comprising: a power conversion circuit, one side is coupled to a power source, and the other side is connected to the at least one light emitting diode for The power of the power source is converted into an electrical signal and then supplied to the at least one light emitting diode to drive the at least one light emitting diode to generate bright light; and a controller electrically connected to the power conversion circuit and stored with a total brightness a value, a preset illumination mode, and a brightness adjustment mode, and configured to control the power conversion circuit to drive the at least one LED to generate bright light in one of the modes; wherein: the preset illumination mode controls the power conversion circuit to drive the At least one light emitting diode generates light having a total brightness value stored by the controller; The brightness adjustment mode drives the at least one light emitting diode to generate bright light, and gradually changes the brightness of the bright light until a pulse signal is received, and records the brightness value of the light generated by the at least one light emitting diode, and The recorded brightness value replaces the previously stored total brightness value, and the power conversion circuit is controlled to drive the at least one light emitting diode to produce a bright light having a new total brightness value. The driving device of claim 9, wherein the controller comprises a coupling detecting circuit and a programmable chip; the detecting circuit is configured to detect whether the mode switch generates the pulse signal; The total brightness value, the preset illumination mode, and the brightness adjustment mode are stored in the program chip, and are electrically connected to the power conversion circuit for controlling the power conversion when the detection circuit detects the pulse signal. The circuit drives the LED set in one of the modes to produce a bright light. The driving device of claim 10, wherein the controller further comprises an optical coupler electrically connected to the detecting circuit and the programmable chip, and the detecting circuit and the programmable chip are transmitted through the optical coupler The coupling is coupled by optical coupling. The driving device of claim 9, wherein the at least one light emitting diode is two light emitting diodes, and is respectively a first light emitting diode and a second light emitting diode, and each of the second light emitting The light color of the diode is different from the light color of each of the first light emitting diodes; the controller further stores a first brightness ratio, a second brightness ratio, and a chromaticity adjustment mode, wherein the brightness ratio is Refers to the ratio of the brightness value of the generated bright light to the total brightness value; and in the preset illumination mode and the brightness adjustment mode, the first light emitting diode generates the light having the first brightness ratio, and the light The second light emitting diode generates bright light having the second brightness ratio; the color adjustment mode controls the power conversion circuit to drive the light emitting diodes to generate bright light, and gradually changes the first light emitting diode and the The brightness ratio of the second light-emitting diode is recorded until the pulse signal is detected again, and the brightness ratio of the first light-emitting diode and the second light-emitting diode is recorded, and the brightness ratio of the record is replaced by the original Store The first brightness ratio and the second brightness ratio, and controlling the power conversion circuit to continue driving the first light emitting diode and the second light emitting diode to generate bright light having a new brightness ratio. The driving device of claim 9, wherein the controller further stores a full-bright mode, and controls the power conversion circuit to drive the LED to generate a brightness of a maximum brightness value at a rated power.