TW201545605A - A lighting system - Google Patents

Abstract

A lighting system, which is composed of a redundant power supply and at least one luminaire with a lamp control module inside, thereof is provided. The lamp control module includes at least one light sources and a light control module. The light control module comprises a current control unit, at least one switch unit, and a process unit. The current control unit is used to act as a DC current source. The at least one switch unit is electrically connected to the at least one light source to enable the DC current source to selectively provide a DC current to the at least one light source in accordance with at least one switch unit control signal. The process unit is used to adjust the quantity of the DC current in accordance with a user control signal. The luminaire includes the lamp control module, a shell body and power lines. The redundant power supply contains at least one AC-to-DC converter module and provides a constant DC power source to the at least one light control module of the luminaire.

Description

Lighting system

The invention relates to a lighting system, a lighting fixture and a lamp control module thereof, in particular to a centralized power supply architecture with a power supply and a hot-swappable power supply structure, which is small in size, light in weight and low in electromagnetic interference. (Electromagnctic Interference; EMI), long-life, easy-to-maintain lighting fixtures and lighting systems that use this lighting fixture.

Lighting devices play an important role in human life, and can be seen in a variety of buildings, vehicles, or decorations. For humans, lighting devices are not only a tool for providing lighting, but lighting devices have a strong influence on human life.

Currently common lighting devices include incandescent lamps, fluorescent lamps, and light-emitting diode (LED) lamps and the like. Conventional incandescent lamps energize the tungsten wire to produce high thermal illumination for illumination. However, this type of illumination is very power-hungry, making incandescent lamps gradually replaced by fluorescent lamps.

Fluorescent lamps emit electrons by applying a high voltage to the electrodes, causing electrons to strike atoms of the mercury vapor, causing ionization and excitation. When the mercury vapor atom returns from the excited state to the original state, an electromagnetic wave having a wavelength of 253.7 nm is emitted, which is in the range of the invisible light of the human eye. because Thus, by using a variety of different fluorescent substances to absorb the electromagnetic waves and convert them into visible light, the fluorescent lamps can emit various colors.

In addition, in order to achieve the goal of environmental protection and energy conservation, people also develop A light-emitting diode lighting module is provided. Under a proper forward bias, the electrons and holes are respectively injected into the N and P ends, and then the hole electrons are combined in the P/N interface region to cause the light emitting diode to emit light. This is because the electrons fall back from the high energy state to the low energy state and combine with the hole to release the energy in the form of light.

The general light-emitting diodes need to use direct current to generate light. Therefore, the LEDs on the market will include an AC-to-DC converter to convert AC power into DC power for the LEDs. A typical AC to DC converter is mostly a switching inverter. Although the switching converter has a better power conversion ratio, it not only has strong electromagnetic interference (EMI), but also has a large volume, which not only makes the LED lamp have a large volume. And it is more complicated in terms of safety certification. Furthermore, the life of the light-emitting diode is much greater than other electronic components on the switching converter, such as electrolytic capacitors. Therefore, if the switching converter is placed outside the lighting fixture, the life of the lamp and the convenience of servicing the switching converter will be greatly improved.

Therefore, there is a need for a lower EMI and a smaller luminaire Volumetric lighting system.

One aspect of the present invention is provided in an illumination system, Includes lighting fixtures and fixture control modules. The luminaire control module and the luminaire use only low electromagnetic interference and a small volume of electronic devices to supply electrical energy to the light source, so the illumination system also provides a small volume and low electromagnetic interference lighting fixture.

According to an embodiment of the invention, the illumination system comprises at least A lighting fixture and an AC to DC modular power supply. Each lighting fixture includes at least one light source, a light control module, a lamp housing, and a power cord. The light control module is electrically connected to the light source to provide a direct current to drive the light source. The light control module includes a current control unit, at least one switch unit, and a processing unit. The current control unit is used to provide a DC current source output. The switching unit is electrically connected to the light source to selectively supply a direct current to at least one of the light sources. The processing unit is electrically connected to the current control unit to adjust the value of the direct current. The lamp housing houses the light source and the light control module. The power cable is disposed in the lamp housing and electrically connected to the light control module to provide a DC voltage to the light control module. The AC to DC modular power supply comprises at least one AC to DC power supply module, wherein the AC to DC power supply module is configured to convert the AC voltage into a DC voltage to provide a DC voltage source output to the light control module.

According to another embodiment of the present invention, the lamp control module package At least one light source and a light control module are included. The light control module is electrically connected to the light source to provide electrical energy to the light source. The light control module includes a current control unit, at least one switch unit, and a processing unit. The current control unit is used to provide a DC current source output. The switch unit is electrically connected to the light source to be opened according to The control signal is turned off to selectively supply at least one of the DC current source output to the light source. The processing unit is electrically connected to the current control unit to adjust the value of the direct current supplied to the light source.

According to still another embodiment of the present invention, the lighting fixture comprises at least A light source, a light control module, a lamp housing, and a power cord. The light control module is electrically connected to the light source to provide electrical energy to the light source. The light control module includes a current control unit, at least one switch unit, and a processing unit. The current control unit is used to provide a DC current source output. The switch unit is electrically connected to the light source to selectively supply at least one of the DC current source output to the light source according to the switch control signal. The processing unit is electrically connected to the current control unit to adjust the value of the direct current supplied to the light source. The lamp housing houses the light source and the light control module. The power cable is disposed in the lamp housing and electrically connected to the light control module to provide a DC voltage to the light control module.

It can be seen from the above description that the lighting fixture of the embodiment of the invention only Use lower electromagnetic interference and a smaller volume of current control unit to supply power to the light source, and the AC to DC modular power supply is independent of the lighting fixture, so that it can reduce the electromagnetic interference of the lighting fixture and reduce the fixture volume.

10‧‧‧Lighting system

20‧‧‧Lighting system

100‧‧‧Lighting fixtures

110‧‧‧Lighting control module

112‧‧‧Light Control Module

112a‧‧‧Processing unit

112b‧‧‧Current Control Unit

112c‧‧‧Switch unit

114‧‧‧Light source

120‧‧‧Power cord

130‧‧‧Lighting housing

200‧‧‧Modular Power Supply

210‧‧‧AC to DC power module

300‧‧‧ dimming device

400‧‧‧Remote control

The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

FIG. 2 is a schematic view showing the appearance of a lighting fixture according to an embodiment of the invention.

FIG. 3 is a functional block diagram of a lamp control module according to an embodiment of the invention.

3A-3E are functional block diagrams of a lamp control module according to an embodiment of the invention.

FIG. 4 is a functional block diagram showing an illumination system according to an embodiment of the present invention.

Please refer to FIG. 1 , which is a functional block diagram of a lighting system 10 according to an embodiment of the invention. The lighting system 10 includes at least one lighting fixture 100, at least one AC to DC modular power supply 200, and at least one dimming device 300. The AC-DC modular power supply 200 includes at least one AC-to-DC power supply module 210. The AC-DC power supply module 210 is configured to receive utility power and convert the utility power into a DC voltage source output for providing to the lighting fixture 100. Light control module 112. In this embodiment, the dimming device 300 can be an analog dimming module (for example, an analog impedance dimming module) or a digital dimming module (for example, a digital communication protocol dimming module) for use. To control the brightness of the luminaire 100.

The AC-DC modular power supply 200 can be provided, but not limited to, in a distribution box of a house, and the lighting fixture 100 can be electrically connected to the AC-DC modular power supply 200 through the wiring of the house. Avoid electromagnetic interference from the AC-DC modular power supply 200, It is convenient to replace and install the lamps. In addition, the AC-to-DC power supply module 210 of the embodiment of the present invention has a hot-swap interface, such that when the AC-DC modular power supply 200 has multiple AC-to-DC power supply modules 210, if one of the AC-to-DC power supplies If the power module 210 is damaged, the faulty AC to DC power module can be directly removed, and a new AC to DC power module can be replaced. During the replacement, other AC-to-DC power supply modules 210 will replace the faulty AC-to-DC power supply module to adjust the output performance of the DC power supply without interrupting the DC power supply. Therefore, the illumination function of the lighting fixture 100 is still not Affected.

Please refer to FIG. 2 and FIG. 3 simultaneously, FIG. 2 is a diagram showing according to the present invention. FIG. 3 is a schematic diagram showing the function of the lighting control module 110 according to an embodiment of the present invention. The lighting fixture 100 includes a lamp control module 110, a power cord 120, and a lamp housing 130. The AC to DC modular power supply 200 is independently disposed from the lamp housing 130, and further, an AC to DC module. The power supply 200 is disposed outside the lamp housing 130. The lamp control module 110 is disposed in the lamp housing 130 and includes a light source 114 and a light control module 112. The power cable 120 is disposed through the lamp housing 130 and electrically connected to the lamp control module 110 to provide a DC voltage source to the light control module 112 of the lamp control module 110.

As shown in FIG. 3, the luminaire control module 110 includes at least one light. Source 114 and at least one light control module 112. The light control module 112 includes a processing unit 112a, a current control unit 112b, and at least one switching unit 112c. In this embodiment, the light source 114 is a light emitting diode, but the present invention The embodiment is not limited to this. In other embodiments of the invention, light source 114 can be other sources that use direct current. The light control module 112 is configured to selectively supply a direct current to the light source 114 to partially or fully turn on the light source 114. In the following description, the functions of the components in the light control module 112 will be described in detail.

The current control unit 112b is configured to be connected through the power line 120. The DC voltage source provided by the external power source is received, and the DC voltage source is converted to a DC current source to provide a DC current to the light source 114, and a switch control signal is provided to the switch unit 112c. The switch unit 112c is electrically connected between the current control unit 112b and the light source 114 to selectively supply a direct current to at least one of the light sources 114. The control terminal of the switch unit 112c is electrically connected to the current control unit 112b to perform an opening or closing operation according to the switch control signal transmitted by the current control unit 112b.

The processing unit 112a is electrically connected to the current control unit 112b, the switch control signal output by the current control unit 112b is determined according to the user control signal, and the DC current value output by the current control unit 112b is adjusted. For example, when the user wants to turn on four light sources and adjust the brightness to the maximum, the user uses an electronic device (such as a remote controller) to send a control signal to the processing unit 112a. When the processing unit 112a receives the user control signal, it transmits a signal to the current control unit 112b to determine the value of the switch control signal, and the current control unit 112b outputs a switch control signal to turn on the four switch units 112c to provide four. The current channels are given to four light sources 114. At the same time, the processing unit 112a also controls the current control unit 112b. The value of the direct current is adjusted to a maximum value so that all of the four light sources 114 can emit light with maximum brightness.

It can be seen from the above description that the lamp control mode of the embodiment of the present invention The group 110 does not include an AC to DC power supply, that is, the light control module 112 of the lamp control module 110 includes only the electrical processing unit 112a, the current control unit 112b, the switch unit 112c, and other necessary passive components (such as resistors). , capacitors, etc.). Since only the current control unit 112b is used to provide electrical energy, the electromagnetic interference of the luminaire control module 100 of the embodiment of the present invention can be greatly reduced.

In addition, it is worth mentioning that in other embodiments of the present invention, The correspondence between the switch unit 112c and the light source 114 is not limited to one-to-one. For example, in other embodiments of the present invention, the correspondence between the switch unit 112c and the light source 114 may be one-to-many or many-to-one, as shown in FIGS. 3A and 3B. For another example, in other embodiments of the present invention, the number of the switch unit 112c and the light source 114 included in the lighting fixture 100 may be only one, as shown in FIG. 3C.

Furthermore, the switch unit 112c is not limited to being electrically connected to electricity. The flow control unit 112b is connected to the light source 114, and the switch control signal is not limited to being provided by the current control unit 112b. For example, as shown in FIG. 3D, in other embodiments of the present invention, the switch unit 112c is electrically connected between the light source 114 and a ground voltage. For another example, as shown in FIG. 3E, in other embodiments of the invention, the switch control signal can be provided by processing unit 112a. The dotted lines shown in FIG. 3D and FIG. 3E represent exemplary paths of the switch control signals.

Please refer to FIG. 4, which is a functional block diagram of a lighting system 20 in accordance with an embodiment of the present invention. Lighting system 20 is similar to lighting system 10, but the difference is that the illumination system 20 further includes a remote controller 400, and the processing unit 112a of the illumination fixture 100 has a remote detection function. The illumination system 20 of the present embodiment provides a remote control 400 for the user to wirelessly control the brightness of the lighting fixture 100. When the user presses the button of the remote controller 400, the processing unit 112a of the lighting fixture 100 receives the user control signal sent by the remote controller 400, and accordingly controls the switching unit 112c and the current control unit 112b according to the signal. The value of the current output is used to turn the light source 114 on or off and adjust the brightness of the light source. The illumination system 20 is more convenient than the illumination system 10 of the embodiment of the present invention.

In addition, the remote controller 400 can also be a smart hand of the user. machine. For example, the user can download an application (APP) online so that the smart phone has the function of transmitting a wireless signal to control the processing unit 112a.

It is worth mentioning that in other embodiments of the invention, The optical device 300 can also have a remote detection function to facilitate remote control by the user. For example, the dimming device 300 can be conveniently controlled by the user using the remote controller 400.

While the invention has been described above in terms of several embodiments, it is not intended to limit the scope of the invention, and the invention may be practiced in various embodiments without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims.

10‧‧‧Lighting system

100‧‧‧Lighting fixtures

112‧‧‧Light Control Module

114‧‧‧Light source

200‧‧‧Modular Power Supply

210‧‧‧AC to DC power module

300‧‧‧ dimming device

Claims (7)

An illumination system comprising: at least one light source; a light control module electrically connected to the at least one light source for receiving a DC power source to drive the at least one light source; and a plurality of AC to DC modular power supplies, The DC power source is provided, wherein the DC power source is an autonomous DC voltage source of the light control module. An illumination system comprising: at least one light source; a light control module electrically connected to the at least one light source to receive a DC power source to drive the at least one light source; a housing accommodating the at least one light source and the light The control module; and a plurality of AC-DC modular power supplies are independently disposed from the housing to provide the DC power source, wherein the DC power source is an autonomous DC voltage source of the light control module. An illumination system comprising: at least one light source; a light control module electrically connected to the at least one light source to receive a DC power source to drive the at least one light source; a housing accommodating the at least one light source and the light a control module; and a plurality of AC-DC modular power supplies are disposed outside the casing, and each of the AC-DC modular power supplies is hot-swappable Replace to adjust the output performance of the DC power supply without interrupting the DC power supply. The illumination system of claim 1, wherein the at least one light source is a light emitting diode. The lighting system of claim 1, 2 or 3, further comprising a dimming module electrically connected to the light control module to provide a control signal to the light control module. The lighting system of claim 5, further comprising a remote controller, wherein the remote controller transmits the control signal to the light control module or the dimming module by wireless transmission. The lighting system of claim 2 or 3, further comprising a power cord disposed in the housing and electrically connected to the light control module and the AC to DC modular power supply Between the supply of the DC power to the light control module.