阅读说明：本技术 用于灯具的电路单元以及包括该电路单元的灯具 (Circuit unit for lamp and lamp comprising same ) 是由 任小军 肖锟 陈伟虎 汪范彬 阿比纳夫·班得瑞 于 2019-11-15 设计创作，主要内容包括：本申请公开了用于灯具的电路单元以及包括该电路单元的灯具,该用于灯具的电路单元,包括：第一电源级,第一电源级从交流电源接收第一电源信号并且对第一电源信号进行AC-DC变换以产生第二电源信号以及还对第一电源信号进行调光信号变换以产生第一调光信号；以及第二电源级,第二电源级连接于第一电源级以接收从第一电源级输出的第二电源信号,其中,第二电源级至少基于第一调光信号调整第二电源信号,从而产生第三电源信号,第二电源级向灯具的发光单元提供第三电源信号以驱动发光单元。(The application discloses a circuit unit for lamps and lanterns and including lamps and lanterns of this circuit unit, this circuit unit for lamps and lanterns includes: a first power stage receiving a first power signal from an alternating current power source and AC-DC converting the first power signal to generate a second power signal and also dimming signal converting the first power signal to generate a first dimming signal; and a second power stage connected to the first power stage to receive a second power signal output from the first power stage, wherein the second power stage adjusts the second power signal based on at least the first dimming signal to generate a third power signal, and the second power stage provides the third power signal to a light emitting unit of the lamp to drive the light emitting unit.)

1. A circuit unit for a luminaire, comprising:

a first power stage that receives a first power signal from an alternating current power source and that AC-DC converts the first power signal to generate a second power signal and that also dimming signal converts the first power signal to generate a first dimming signal; and

a second power stage connected to the first power stage to receive the second power signal output from the first power stage, wherein the second power stage adjusts the second power signal based on at least the first dimming signal to generate a third power signal, the second power stage providing the third power signal to a light emitting unit of the lamp to drive the light emitting unit.

2. The circuit unit of claim 1, wherein the ac power source is a phase-cut dimmer providing an ac signal of a non-standard ac voltage, and wherein the first power stage is further configured to keep the first power signal output by the phase-cut dimmer stable.

3. The circuit cell of claim 2, wherein the first power supply stage comprises:

an AC-DC converter connected between the phase-cut dimmer and the second power stage for AC-DC converting the first power signal; and

and the phase-cut dimmer compatible circuit is connected to the phase-cut dimmer and is used for ensuring the stable work of the phase-cut dimmer so as to keep the first power supply signal output from the phase-cut dimmer stable.

4. The circuit unit of claim 1, wherein the first power stage comprises a first dimming signal generation circuit that receives the first power signal from the ac power source and performs dimming signal conversion on the first power signal to generate the first dimming signal.

5. The circuit unit of claim 4, wherein the second power stage receives the first dimming signal and adjusts the second power signal using the first dimming signal.

6. The circuit unit of claim 4, further comprising at least one second dimming signal generation circuit that receives the first dimming signal from the first dimming signal generation circuit and generates at least one second dimming signal based on the first dimming signal and inputs the at least one second dimming signal to the second power supply stage, the second power supply stage adjusting the second power supply signal using the at least one second dimming signal.

7. The circuit unit of claim 5, further comprising at least one second dimming signal generation circuit that inputs at least one second dimming signal to the second power stage, wherein the second power stage adjusts the second power signal using a combined signal that combines the at least one second dimming signal and the first dimming signal.

8. The circuit unit of claim 5, wherein the second power stage receives at least one second dimming signal from an external device, and wherein the second power stage adjusts the second power signal using a combined signal that combines the at least one second dimming signal and the first dimming signal.

9. The circuit unit of claim 6, wherein the at least one second dimming signal comprises two or more second dimming signals, and wherein the second power stage adjusts the second power signal using a combined signal of the two or more second dimming signals.

10. The circuit unit of claim 1, wherein the second power supply signal output from the first power supply stage is further operable to drive speaker means in the light fixture into operation.

11. The circuit unit of claim 10, wherein the speaker arrangement is further configured to generate a third dimming signal, and wherein the second power supply stage receives the third dimming signal from the speaker arrangement and the first dimming signal from the first power supply stage, such that the second power supply stage can adjust the second power supply signal using a combined signal of the first dimming signal and the third dimming signal.

12. The circuit unit according to any of claims 7 to 9 and 11, wherein the combining comprises: multiplication, addition, subtraction, or any combination thereof.

13. The circuit unit according to claim 6 or 7, wherein the second dimming signal generation circuit comprises an acousto-electric conversion unit, a motion sensor, a light sensor, and a presence detector.

14. The circuit unit of claim 1, further comprising a smoothing section connected between the first power supply stage and the second power supply stage to smooth the second power supply signal.

15. A luminaire comprising a circuit unit according to any one of claims 1 to 14.

16. A light fixture as recited in claim 15, further comprising speaker means coupled to said first power supply stage and receiving said second power signal from said first power supply stage for driving operation of said speaker means.

Technical Field

The present disclosure relates to the field of lighting technologies, and in particular, to a circuit unit for a lamp and a lamp including the circuit unit.

Background

Light fixtures are common lighting fixtures in everyday life that are typically mounted in a location such as a ceiling for providing lighting light to an environment. In recent years, in various lighting applications, it is desirable to be able to adjust the brightness of the output light of a luminaire, and a dimmer is often used to adjust the power supplied to the luminaire, thereby adjusting the light output of the luminaire, for example, a user interface of the dimmer may be mounted on a wall, and the user interface is configured with a switching/adjusting mechanism such as a knob, a slide bar, or the like, thereby being able to switch the luminaire on and off and being able to adjust the light output of the luminaire. In addition, a remote controller may be used to perform dimming, specifically, the light brightness of the lamp can be adjusted by using a wireless control module such as bluetooth or WiFi and combining with a driving power supply of a PWM control method, but the price of such a method is usually high, which is not affordable for general consumers. In addition, people cannot adjust the light intensity of the lamp by using the existing wall switch or lamp switch.

Furthermore, as the demand for comfort of the environment is higher, the light fixtures providing only the lighting function have been unable to meet the demand of people, for example, the sound and light integrated light fixtures appearing on the market, which can provide the lighting function while reproducing sound in response to the input of the audio signal. However, the existing integrated type lamp integrates the lamp and the speaker device, so that the lamp can provide an illumination function through the light emitting unit and an electroacoustic conversion function through the speaker device when power is supplied to the light emitting unit and the speaker device through the circuit unit, respectively. However, the existing acousto-optic integrated lamp has the defects such as: first, the circuit unit of the existing integrated lamp does not have a function of changing the voltage in the circuit, and thus does not have a dimming function; second, the circuit unit of the existing integrated lamp can change a voltage in a circuit and output a constant voltage to the speaker device to ensure stability of the lamp in operation, but such a circuit unit requires two circuit paths for the light emitting unit and the speaker device to be arranged in parallel to ensure a constant voltage to be output to the speaker device, thereby requiring a large size of such a circuit unit and increasing a manufacturing cost of the circuit unit.

Disclosure of Invention

It is an object of the present disclosure to provide a luminaire and a circuit unit thereof, which at least mitigate or obviate at least one of the above-mentioned disadvantages.

One aspect of the present disclosure provides a circuit unit for a lamp, including: a first power stage receiving a first power signal from an alternating current power source and AC-DC converting the first power signal to generate a second power signal and also dimming signal converting the first power signal to generate a first dimming signal; and a second power stage connected to the first power stage to receive a second power signal output from the first power stage, wherein the second power stage adjusts the second power signal based on at least the first dimming signal to generate a third power signal, and the second power stage provides the third power signal to a light emitting unit of the lamp to drive the light emitting unit.

The alternating current power supply is a phase-cut dimmer providing an alternating current signal of a non-standard alternating current voltage, and the first power supply stage is further used for keeping the first power supply signal output by the phase-cut dimmer stable.

The first power supply stage includes: the AC-DC converter is connected between the phase-cut dimmer and the second power supply stage and is used for carrying out AC-DC conversion on a first power supply signal; and a phase-cut dimmer compatible circuit connected to the phase-cut dimmer and configured to ensure stable operation of the phase-cut dimmer so that the first power signal output from the phase-cut dimmer is stable.

The first power stage includes a first dimming signal generation circuit that receives a first power signal from the ac power source and performs dimming signal conversion on the first power signal to generate a first dimming signal.

The second power stage receives the first dimming signal and adjusts the second power signal using the first dimming signal.

The circuit unit further includes at least one second dimming signal generation circuit receiving the first dimming signal from the first dimming signal generation circuit and converting the first dimming signal into at least one second dimming signal and inputting the at least one second dimming signal to the second power stage, the second power stage adjusting the second power signal using the at least one second dimming signal.

The circuit unit further includes at least one second dimming signal generation circuit that inputs at least one second dimming signal to the second power stage, and the second power stage adjusts the second power signal using a combined signal that is a combination of the at least one second dimming signal and the first dimming signal.

The second power stage receives at least one second dimming signal from the external device, and adjusts the second power signal using a combined signal that combines the at least one second dimming signal and the first dimming signal.

The at least one second dimming signal may include two or more second dimming signals, such that the second power stage adjusts the second power signal using a combined signal of the two or more second dimming signals.

The second power supply signal output from the first power supply stage can also be used to drive speaker means in the luminaire into operation.

The speaker arrangement is further configured to generate a third dimming signal, the second power stage receiving the third dimming signal from the speaker arrangement and the first dimming signal from the first power stage, such that the second power stage can adjust the second power supply signal using a combined signal of the first dimming signal and the third dimming signal.

The combination comprises: multiplication, addition, subtraction, or any combination thereof.

The second dimming signal generation circuit includes an acoustic-electric conversion unit, a motion sensor device, and a light sensor device.

The circuit unit further includes a smoothing part connected between the first power stage and the second power stage to smooth the second power signal.

The embodiment of the present disclosure further provides a lamp, which includes the above circuit unit, and in addition, the lamp may further include a speaker device, connected to the first power stage and receiving the second power signal from the first power stage to drive the speaker device to operate.

Drawings

The illustrative embodiments may take form in various components and arrangements of components. Illustrative embodiments are shown in the drawings, in which like reference numerals may indicate corresponding or similar parts throughout the several views. The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the disclosure. Given the following possible description of the drawings, the novel aspects of the present disclosure should be readily apparent to those of ordinary skill in the relevant art.

Fig. 1 shows a block diagram of a luminaire according to one embodiment of the present disclosure.

Fig. 2 shows a block diagram of a luminaire according to another embodiment of the present disclosure.

Fig. 3 is a block diagram illustrating a luminaire according to another embodiment of the present disclosure.

Fig. 4 is a block diagram illustrating a luminaire according to another embodiment of the present disclosure.

Fig. 5 is a circuit schematic diagram illustrating a portion of a circuit unit of a luminaire connected between a phase cut dimmer and a first power supply stage of the circuit unit according to an embodiment of the present disclosure.

Fig. 6 is a circuit schematic diagram illustrating a phase cut dimmer compatible circuit of a circuit unit of a luminaire according to an embodiment of the present disclosure.

Fig. 7 is a circuit schematic diagram illustrating a first dimming signal generation circuit of a circuit unit of a luminaire according to an embodiment of the present disclosure.

Detailed Description

Although the illustrative embodiments are described herein with respect to particular applications, it should be understood that the disclosure is not limited thereto. Those skilled in the art and guided by the teachings herein provided will recognize additional applications, modifications, and embodiments within the scope thereof and additional fields in which the disclosure would be of significant utility.

The exemplary embodiments described herein provide several advantages over typical light fixtures. For example, they allow dimming of light fixtures with existing wall switches; with the acousto-optic integrated lamp, even after the current and voltage input to the lamp are adjusted, it is possible to output a constant current to the light emitting unit and a constant voltage to the speaker device in a simple manner without the need to provide two circuit paths for the light emitting unit and the speaker device in parallel.

Fig. 1 shows a luminaire 1 according to one embodiment of the present disclosure, the luminaire 1 comprising: the lighting device comprises a circuit unit 2 and a light-emitting unit 3, wherein the light-emitting unit 3 is electrically connected to the circuit unit 2, and the circuit unit 2 is used for supplying electric energy of an external power supply to the light-emitting unit 3, so that illumination light is provided for the use environment of the lamp through the light-emitting unit 3.

Specifically, as shown in fig. 1, the circuit unit 2 includes a first power stage 10 that receives a first power signal AC1 from the AC power 40 and AC-DC converts the first power signal AC1 to generate a second power signal DC2, the first power stage 10 further dimming-signal-converts the first power signal AC1 to generate a first dimming signal DIM 1; and a second power stage 20 connected to the first power stage 10 to receive the second power signal DC2 output from the first power stage 10, wherein the second power stage 20 adjusts the level of the second power signal DC2 based on at least the first dimming signal DIM1 to generate a third power signal DC 3. The second power supply stage 20 provides a third power supply signal DC3 to the light emitting cell 3 to drive the light emitting cell 3.

Wherein the first power signal AC1 is an alternating current signal provided by the alternating current power source 40, the second power signal DC2 and the third power signal DC3 are direct current signals, and the first dimming signal DIM1 may be a square wave or a direct current signal. The light emitting unit 3 may include a plurality of light emitting diode devices.

The AC power source 40 may be a phase-cut dimmer supplying an AC signal of a non-standard AC voltage to the luminaire 1, wherein the phase-cut dimmer is connected between a standard dedicated power source (i.e. so-called mains) supplying a standard AC voltage and the luminaire 1, and the first power stage 10 is capable of keeping the first power signal AC1 output by the phase-cut dimmer stable, i.e. parameters of the first power signal AC1, such as amplitude, frequency, stable.

In this embodiment, since the dimming signal is generated from the circuit unit 2 in the lamp to adjust the brightness of the light output from the light emitting unit, the output light intensity of the lamp can be adjusted by using the existing wall switch or lamp switch with the phase-cut dimmer, so that there is no need to additionally replace the wall switch or use a remote controller to adjust the output light intensity of the lamp, thereby reducing the operation complexity and the cost of the lamp. Further, as shown in fig. 2, fig. 2 shows a lamp 1 according to another embodiment of the present disclosure, as shown in fig. 2, the first power stage 10 includes an AC-DC converter 101 connected between the AC power source 40 as a phase-cut dimmer and the second power stage 20 and configured to AC-DC convert the first power signal AC1 provided from the AC power source 40 to generate a second power signal DC2 as a DC signal; a phase-cut dimmer compatible circuit 102 connected to the AC power source 40 as a phase-cut dimmer and configured to ensure a stable operation of the phase-cut dimmer to ensure a stable operation of the first power signal AC1 output from the phase-cut dimmer, wherein fig. 6 shows a circuit schematic diagram of an example of the phase-cut dimmer compatible circuit 102; and a first dimming signal generation circuit 103 receiving the first power signal AC1 from the AC power 40 and performing dimming signal conversion on the first power signal AC1 to generate a first dimming signal DIM1, wherein fig. 7 shows a circuit diagram of the first dimming signal generation circuit 103.

In particular, the phase-cut dimmer compatible circuit 102 enables the circuit unit 1 to be compatible with many types of dimmers sold in the market without the circuit unit 1 failing to normally drive the light emitting unit because different types of dimmers have different phase-cut angles. The first dimming signal generation circuit 103 is configured to convert a phase-cut angle of the first power signal AC1 received from the AC power source 40 as a phase-cut dimmer into dimming depth information, for example, convert the phase-cut angle into a duty ratio of a square wave or an amplitude of a dc signal by analog circuit conversion or a certain algorithm (multiplication, addition, subtraction, or any combination thereof) by programming of a single chip, wherein the duty ratio of the square wave and the amplitude of the dc signal represent the magnitude of the phase-cut angle, thereby controlling the dimming depth of the light emitting unit.

The first dimming signal DIM1 may be directly input to the second power stage 20, so that the second power stage 20 adjusts the level of the second power signal DC2 using the first dimming signal DIM1, thereby adjusting the intensity of the output light of the light emitting unit 3.

Alternatively, the luminaire 1 may further include at least one second dimming signal generation circuit 30, the first dimming signal DIM1 may be input to the at least one second dimming signal generation circuit 30 instead of the first dimming signal DIM1 being directly input to the second power stage 20, such that the at least one second dimming signal generation circuit 30 generates at least one second dimming signal DIM2 based on the first dimming signal DIM1 and inputs the at least one second dimming signal DIM2 to the second power stage 20, and the second power stage 20 adjusts the second power signal DC2 using the at least one second dimming signal DIM 2. Specifically, the second dimming signal generation circuit 30 may generate at least one electrical signal based on other conditions and combine the electrical signal with the first dimming signal to generate at least one second dimming signal DIM 2. Other conditions may include conditions of the environment in which the light fixture is located, such as sound intensity, light intensity, and whether a person is present in the environment, etc. These other conditions may be acquired using an acousto-electric conversion unit, a presence detector, a light sensor, a motion sensor, etc., and converted into at least one electrical signal to be combined with the first dimming signal DIM1 to generate the second dimming signal DIM 2.

In the case where the at least one second dimming signal DIM2 includes two or more second dimming signals DIM2, the second power stage 20 combines the two or more second dimming signals DIM2 input to the second power stage 20 to generate a combined signal, and adjusts the second power signal DC2 using the combined signal. The combining may include multiplying, adding, subtracting, or any combination thereof the two or more second dimming signals.

Alternatively, the at least one second dimming signal generation circuit 30 may directly generate the at least one second dimming signal DIM2 based on other conditions and output the at least one second dimming signal DIM2 to the second power stage 20. The second power stage 20 may also receive the first dimming signal DIM1, such that the second power stage 20 adjusts the second power signal DC2 using a combined signal that combines the at least one second dimming signal DIM2 and the first dimming signal DIM 1.

Alternatively, the second power stage 20 may receive at least one second dimming signal DIM2 from the external device 400, thereby adjusting the second power signal DC2 using a combined signal that is a combination of the at least one second dimming signal DIM2 and the first dimming signal DIM1 received from the first power stage 10.

The combination may include a multiplication operation, an addition operation, a subtraction operation, or a combination thereof.

The second dimming signal generation circuit 30 may include an acousto-electric conversion unit, a motion sensor, a light sensor, a presence detector, and the like, and may be powered by the second power signal DC2 output from the AC-DC converter 101. In addition, the second dimming signal generation circuit 30 may be a remote controller provided outside the lamp.

Fig. 3 is a block diagram illustrating a lamp fixture according to another embodiment of the present disclosure, and the lamp fixture 1 illustrated in fig. 3 is different from the lamp fixture 1 illustrated in fig. 1 in that the lamp fixture is an acousto-optic integrated lamp fixture, that is, the lamp fixture 1 further includes a speaker device 50 connected to the first power stage 10 and receiving the second power signal DC2 from the first power stage 10, and the second power signal DC2 is used for driving the speaker device 50 to operate. As an example, the speaker device 50 may be a wireless sound box to receive audio signals from an external source.

Specifically, the speaker device 50 may generate a sound signal based on the received audio signal so as to enable the light fixture 1 to emit sound while emitting light.

In the present embodiment, since the first power supply stage 10 simultaneously supplies the dimming signal for adjusting the intensity of the output light of the light-emitting unit 3 and the electric signal for driving the speaker device 50, the voltage output from the first power supply stage 10 to the speaker device 50 can be ensured to be a constant voltage, and the operating state of the speaker device 50 is not adversely affected, whereby the speaker device 50 can operate stably and provide good sound quality.

Further, in this embodiment, since it is not necessary to additionally provide the speaker device 50 with a signal control section, it is possible to simplify and miniaturize the circuit unit of the lamp, and thereby reduce the manufacturing cost of the circuit unit.

Further, the speaker device 50 may be further configured to generate the third dimming signal DIM3 and output the third dimming signal DIM3 to the second power stage 20, so that the second power stage 20 can adjust the second power signal DC2 using a combined signal of the first dimming signal DIM1 and the third dimming signal DIM 3. Specifically, the speaker apparatus 50 may generate the third dimming signal DIM3 based on the intensity of the sound to be output, and of course, the speaker apparatus 50 may generate the third dimming signal DIM3 based on other conditions as needed.

Further, although not shown, as an example, the first dimming signal DIM1 output from the first power stage 10 may be output to the speaker device 50 instead of being output to the second power stage 20, so that the speaker device 50 can generate the third dimming signal DIM3 based on the first dimming signal DIM1 and output the third dimming signal DIM3 to the second power stage 20, so that the second power stage 20 can adjust the second power signal DC2 using the third dimming signal DIM 3.

Further, the second power stage 20 can adjust the second power signal DC2 using a combined signal in which the second dimming signal DIM2 generated by the at least one second dimming signal generation circuit 30 based on the first dimming signal DIM1 and the third dimming signal DIM3 generated by the speaker device 50 based on the first dimming signal DIM1 are combined.

Alternatively, the second power stage 20 may adjust the second power signal DC2 using a combined signal of the first dimming signal DIM1 received from the first power stage 10, the second dimming signal DIM2 generated by the at least one second dimming signal generation circuit 30, and the third dimming signal DIM3 generated by the speaker arrangement 50.

The second dimming signal DIM2 and the third dimming signal DIM3 may be square waves, direct current signals, and the like, similar to the first dimming signal DIM 1.

Fig. 4 is a block diagram illustrating a lamp fixture according to another embodiment of the present disclosure, and the lamp fixture 1 illustrated in fig. 4 is different from the lamp fixture 1 illustrated in fig. 1 in that a smoothing section 60 is further included, the smoothing section 60 being connected between the first power stage 10 and the second power stage 20 to receive the second power signal DC2 from the first power stage 10 and remove an alternating current component in the second power signal DC2, thereby generating a smoothed power signal DC2', and providing the generated smoothed power signal DC2' to the second power stage 30 and the speaker device 50 (if any). The smoothing section 60 may be a filter, a capacitor, or the like.

It is to be noted that the circuit unit of the present application may include a circuit board, wherein the first power stage and the second power stage and components included in each may be disposed on the circuit board, and the type of the circuit board is not limited to a PCB circuit board, an FCB circuit board, and the like, and each component may be disposed on the circuit board by printing, etching, and the like.

Further, the second power stage 20 may include a DC-DC driver that receives the second power signal DC2 from the first power stage 10 and outputs the third power signal DC3 to the light emitting unit 3, and may also receive one or more of the first dimming signal DIM1, the second dimming signal DIM2, and the third dimming signal DIM3 to adjust the level of the second power signal DC2, thereby generating the third power signal DC 3.

It will be appreciated by persons skilled in the art that the above embodiments are only examples, wherein features of different embodiments may be combined with each other to obtain embodiments that are easily imaginable in accordance with the present disclosure, but that are not explicitly indicated in the drawings.

The above-described embodiments are merely examples of implementations of the present disclosure, and various components of the above-described embodiments may be combined with each other and various adaptations and modifications of the above-described embodiments may be configured without departing from the scope and spirit of the present disclosure. It is, therefore, to be understood that within the scope of the appended claims, the teachings herein may be practiced otherwise than as specifically described herein.