CN209415124U - Electrical equipment - Google Patents
Electrical equipment Download PDFInfo
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- CN209415124U CN209415124U CN201821328930.XU CN201821328930U CN209415124U CN 209415124 U CN209415124 U CN 209415124U CN 201821328930 U CN201821328930 U CN 201821328930U CN 209415124 U CN209415124 U CN 209415124U
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Abstract
A kind of electrical equipment is provided, even if the load factor for being also able to suppress the electric power converters such as AC adapter increases in the case where the electrical equipment for using the electric power converters such as AC adapter is provided with the power supply interfaces such as USB interface.The electrical equipments such as luminaire (1) have: tonic chord portion (illumination region 10) executes the function of tonic chord of electrical equipment；Electric power converter (AC adapter 20), is converted to direct current power for AC power；Power supply interface (USB interface 40), by being connect with other equipment, to feed electrical power to the other equipment；And power supply unit (30) feeds electrical power to tonic chord portion and the power supply interface according to the direct current power from electric power converter, the output of power supply interface, relative to the variation for the output that tonic chord portion carries out, is changed with opposite correlativity.
Description
Technical field
The utility model relates to the electrical equipments such as luminaire more particularly to desk lamps.
Background technique
The electrical equipment for having USB (Universal Serial Bus: universal serial bus) interface is known.Example
Such as, patent document 1 discloses a kind of PC for having USB interface.
By utilizing USB interface, data communication is thus allowed for, and can connect with peripheral equipment.For example, passing through
USB storage is inserted into the USB interface for being arranged on the framework of PC, thus allows for the number to USB storage
According to write-in, or carry out the reading from the data of USB storage.Further, it is possible to by the way that USB cable is connected to USB interface,
Thus allow for the connection with peripheral equipments such as mouse or printers.
Also, USB interface is not only used for the connection of data communication or peripheral equipment, and it is secondary to have can be used in built-in
The charging of other equipment of battery.In this case, for example, passing through the USB interface via USB cable to electrical equipment
Be attached with portable terminals such as smart phones, so as to using the electric power that is exported from USB interface to portable terminal into
Row charging.
(existing technical literature)
(patent document)
1 Japanese Unexamined Patent Publication 2011-258181 bulletin of patent document
However, from AC adapter into the electrical equipment that equipment body is powered, if setting USB interface make to it
He is possibly realized in the charging of equipment, then the load factor of AC adapter increases, and the service life of AC adapter is caused to shorten.
Utility model content
The utility model is in order to solve above-mentioned this project, and it is an object of the present invention to provide a kind of electrical equipment, even if using
In the case that the electrical equipment of the electric power converters such as AC adapter is provided with the power supply interfaces such as USB interface, it is suitable to be also able to suppress AC
The load factor of the electric power converters such as orchestration increases.
In order to reach above-mentioned purpose, a form of electrical equipment involved in the utility model is to have: electric power turns
AC power is converted to direct current power by parallel operation；Tonic chord portion executes the function of tonic chord of the electrical equipment；Power supply interface passes through
It is connect with external equipment, to feed electrical power to the external equipment；And power supply unit, according to from the electric power converter
Direct current power feeds electrical power to the tonic chord portion and the power supply interface, the output of the power supply interface, relative to by institute
The variation for stating the output of tonic chord portion progress, is changed with opposite correlativity.
Preferably, the electrical equipment is luminaire, and the tonic chord portion is the illumination region of output light, and the power supply connects
Mouthful output, the variation of the brightness relative to the light exported from the illumination region changes with opposite correlativity.
Preferably, the electrical equipment is further equipped with: receiving portion, receives the brightness to the light exported from the illumination region
The light modulation instruction changed；And control unit, it is indicated according to the light modulation received by the receiving portion, dim signal is output to
The power supply unit, the power supply unit, according to the dim signal from the control unit so that the output of the power supply interface with from
The brightness of the light of illumination region output by opposite correlativity come in a manner of changing, Xiang Suoshu illumination region and the power supply
Interface is supplied respectively to electric power.
Preferably, the receiving portion also receive the output changed for the output to the power supply interface change refer to
Show, the control unit, according to the output change instruction received by the receiving portion, will be used for the output to the power supply interface into
Signal is changed in the output of row change, is output to the power supply unit, and the power supply unit changes signal according to the output, by electric power
It is supplied to the power supply interface, so that the output of the power supply interface is changed.
Preferably, the brightness of the light exported from the illumination region be maximum value in the case where, the power supply interface it is defeated
It is out minimum value, in the case where the brightness of the light exported from the illumination region is minimum value, the output of the power supply interface is
Maximum value.
Preferably, in the case where value in the brightness of the light exported from the illumination region between minimum value and maximum value,
Value of the output of the power supply interface between maxima and minima.
Preferably, the brightness of the light exported from the illumination region is changed with multiple stages.
Preferably, the brightness of the light exported from the illumination region changes linearly.
Preferably, the output of the power supply interface is changed with multiple stages.
Preferably, the output of the power supply interface changes linearly.
Preferably, the power supply unit has the first power circuit and second source circuit, and first power circuit will
A part of the direct current power exported from the electric power converter carries out DC-DC conversion, and direct current power is supplied to the master
Others a part of the direct current power exported from the electric power converter is carried out DC- by function part, the second source circuit
DC conversion, and direct current power is supplied to the power supply interface.
Preferably, the luminaire is desk lamp.
Preferably, the power supply interface is USB interface.
Preferably, the electrical equipment has the main body for storing the power supply unit, and the power supply interface is arranged on described
Main body, the electric power converter are connect in a manner of it can assemble and disassemble with the main body.
Preferably, according to the size of the capacity for the electric power converter being connect with the main body, the power supply interface
Output changes.
Preferably, according to the output voltage for the electric power converter being connect with the main body, the power supply interface it is defeated
It changes out.
Preferably, according to the output electric current for the electric power converter being connect with the main body, the power supply interface it is defeated
It changes out.
Preferably, the output of the power supply interface, the size of the capacity relative to the electric power converter, with positive correlation
Relationship changes.
Preferably, the threshold value in the capacitive radio regulation for the electric power converter being connect with the main body it is small and with it is described
In the case that the bearing power of the external equipment of power supply interface connection is bigger than defined threshold value, carried out by the tonic chord portion defeated
Become smaller out.
Preferably, the electrical equipment be luminaire, the tonic chord portion be output light illumination region, with the master
The threshold value of the capacitive radio regulation of the electric power converter of body connection is small and the external equipment that connect with the power supply interface is born
In the case that threshold value as defined in load power ratio is big, the brightness of the light exported from the illumination region becomes smaller.
Preferably, the electrical equipment be luminaire, the tonic chord portion be output light illumination region, with the master
The threshold value of the capacitive radio regulation of the electric power converter of body connection is small and the external equipment that connect with the power supply interface is born
In the case that threshold value as defined in load power ratio is big, from the optical flare of illumination region output.
Also, one form of the others of electrical equipment involved in the utility model is to have electric power converter, will be handed over
Galvanic electricity power is converted to direct current power；Tonic chord portion executes the function of tonic chord of the electrical equipment；Power supply interface, by being set with other
Standby connection, to feed electrical power to the other equipment；Power supply unit will according to the direct current power from the electric power converter
Power supply is to the tonic chord portion and the power supply interface, and stores the main body of the power supply unit, the power supply interface quilt
It is arranged in the main body, the electric power converter is connect in a manner of it can assemble and disassemble with the main body, is connected according to the main body
The output of the size of the capacity of the electric power converter connect, the power supply interface changes.
Even if being also able to suppress the electricity such as AC adapter in the case where electrical equipment is provided with the power supply interfaces such as USB interface
The load factor of force transducer increases.
Detailed description of the invention
Fig. 1 is the outside drawing of luminaire involved in embodiment 1.
Fig. 2 is the functional-block diagram of luminaire involved in embodiment 1.
Fig. 3 shows the light output of the illumination region in luminaire involved in embodiment 1 and the output of USB interface
First example of relationship.
Fig. 4 shows the light output of the illumination region in luminaire involved in embodiment 1 and the output of USB interface
Second example of relationship.
Fig. 5 shows the light output of the illumination region in luminaire involved in embodiment 1 and the output of USB interface
The third example of relationship.
Fig. 6 shows the light output of the illumination region in luminaire involved in embodiment 1 and the output of USB interface
4th example of relationship.
Fig. 7 shows the rated capacity and USB interface of the AC adapter in luminaire involved in embodiment 2
One example of the relationship of output.
Symbol description
1 luminaire
10 illumination regions
20 AC adapters (electric power converter)
30 power supply units
31 first power circuits
32 second source circuits
40 USB interfaces (power supply interface)
50 receiving portions
60 control units
130 main bodys
Specific embodiment
The embodiments of the present invention is illustrated below.In addition, the embodiment that will be discussed below is this
One specific example of utility model.Therefore, numerical value, shape shown in the following embodiments and the accompanying drawings, material, constituent element and
Allocation position, connection type of constituent element etc. are an example, and purport is not defined to the utility model.Cause
This, the skill of the upper concept of the utility model is shown for not being documented among the constituent element in the following embodiments and the accompanying drawings
Constituent element in art scheme illustrates as arbitrary constituent element.
Also, each figure is ideograph, not rigorous diagram.Therefore, scale bar in each figure etc. and non-required one
It causes.In each figure, identical symbol is assigned for substantially the same composition, repeat description is omitted or simplified.
(embodiment 1)
Firstly, being illustrated using Fig. 1 and Fig. 2 to luminaire 1 involved in embodiment 1.Fig. 1 is embodiment
The outside drawing of luminaire 1 involved in 1.Fig. 2 is the functional-block diagram of the luminaire 1.
Luminaire 1 is an example of electrical equipment, is in the present embodiment desk lamp.That is, in present embodiment
Luminaire 1 is desktop lighting device.
As shown in Figure 1, luminaire 1 has: head 110 has illumination region 10；Arm 120, support head 110；And
Main body 130 is equipped with arm 120.In the present embodiment, main body 130 include the cradle portion 131 being connect with arm 120, with
And the basal part 132 of bearing cradle portion 131.
Head 110 is rotatably fixed on the end of a side of arm 120.Another party's of arm 120
End is rotatably fixed on main body 130.Specifically, the end of another party of arm 120 is can rotate
Mode be fixed on cradle portion 131 a side end.The end of another party of cradle portion 131 is rotatably fixed
In basal part 132.Specifically, being provided with a part of pedestal portion 132a outstanding from basal surface, cradle portion in basal part 132
The end of 131 another party is rotatably fixed on pedestal portion 132a.
As shown in Figure 1 and Figure 2, luminaire 1 is also equipped with AC adapter 20, power supply other than having illumination region 10
Portion 30, USB interface 40, receiving portion 50 and control unit 60.
Illumination region 10 is the tonic chord portion for executing the function of tonic chord of luminaire 1.That is, illumination region 10 is to carry out output work to light
For the function of tonic chord.In the present embodiment, illumination region 10 irradiates white light, using as illumination light.Illumination region 10 is, for example, to be made of LED
LED module (LED light source).LED module for example by substrate and is installed in multiple LED of substrate and constitutes.LED is by power supply
The direct current power that portion 30 supplies shines.In the present embodiment, illumination region 10 be connected in parallel by three LED series circuits and
The LED module of composition, the LED series circuit are made of 10 LED element series connections.In addition, the light source of illumination region 10 is simultaneously
It is non-to be limited by LED light source.
Also, illumination region 10 can carry out brightness adjustment control according to dim signal.That is, can be changed by dim signal
The brightness for the illumination light irradiated from illumination region 10.In addition, illumination region 10 can not only carry out brightness adjustment control, but also can be by structure
Toning control as the colour temperature for being able to carry out change illumination light.
AC adapter 20 is the electric power converter that AC power is converted to direct current power.AC adapter 20 is for example by quotient
Alternating voltage (such as AC100V) is converted to DC voltage, and is supplied to power supply unit 30.
AC adapter 20 is connected to main body 130 in a manner of it can assemble and disassemble relative to main body 130.Specifically, AC
The connector of the DC cable 21 (DC output line) of adapter 20 is connected to the base for being arranged on main body 130 in a manner of it can assemble and disassemble
The insert port of bottom 132.
In addition, in the present embodiment, although the plug of AC adapter 20 is set directly at adapter main body, Bu Guoye
The AC cable (AC input line) drawn from adapter main body can be arranged on.
Power supply unit 30 is to be supplied electric power according to the direct current power from AC adapter 20 to illumination region 10 and USB interface 40
Power circuit.In the present embodiment, power supply unit 30 has the first power circuit 31 and second source circuit 32.
First power circuit 31 is the driving circuit controlled the light output of illumination region 10, is generated for making illumination region
10 luminous electric power, and by the power supply to illumination region 10.In the present embodiment, the first power circuit 31 is that DC/DC turns
A part of the direct current power exported from AC adapter 20 is carried out DC/DC conversion, and supplies direct current to illumination region 10 by parallel operation
Power.
Second source circuit 32 is the driving circuit controlled the output of USB interface 40.In the present embodiment,
Two power circuits 32 are DC-DC converters, and others a part of the direct current power exported from AC adapter 20 is carried out DC-DC
Conversion, and direct current power is supplied to USB interface 40.
Also, power supply unit 30 is according to the signal from control unit 60, to determine to be supplied to illumination region 10 and USB interface
40 electric power.For example, first power circuit 31 will be with dim signal pair when power supply unit 30 receives dim signal from control unit 60
The power supply answered is to illumination region 10.Also, power supply unit 30 from control unit 60 receive as electric light turn off the light signal lighting believe
When number (light modulation 100% signal) or signal of turning off the light (0% signal of light modulation), the first power circuit 31 feeds electrical power to illumination region
10, make to stop to the power supply of illumination region 10.
Moreover, in the present embodiment, power supply unit 30 is according to the dim signal from control unit 60, so that USB interface 40
Output and the brightness from the light that illumination region 10 exports by opposite correlativity come in a manner of changing, to illumination region 10 and
USB interface 40 is supplied respectively to electric power.
In this case, according to the dim signal from control unit 60 so that the output of USB interface 40 with from illumination region
Direct current power in a manner of changing, is supplied to by the brightness of the light of 10 outputs by opposite correlativity from the first power circuit 31
Illumination region 10, while USB interface 40 is supplied to from second source circuit 32 by direct current power.
Power supply unit 30 is by circuit substrate and is installed in multiple circuit elements of the circuit substrate and constitutes, the circuit base
Plate is made of printed circuit board.Multiple circuit elements constitute the first power circuit 31 and second source circuit 32.In this reality
It applies in mode, the circuit element for constituting the first power circuit 31 and the circuit element for constituting second source circuit 32 are installed in together
One circuit substrate.Power supply unit 30 with the above this composition is incorporated in main body 130.Specifically, power supply unit 30 is received
It is contained in the cradle portion 131 as framework.
USB interface 40 is and to feed electrical power to the power supply interface of the other equipment by connecting other equipment.For example,
Be connected to USB interface 40 by the other end for the USB cable for connecting one end with other equipment, thus USB interface 40 via
USB cable provides the electric power supplied from power supply unit 30 to other equipment.Specifically, USB interface 40 is according to from second source
The electric power that circuit 32 supplies, is output to other equipment for defined electric current.
Hereby it is possible to charge via USB cable to the secondary cell for being built in the other equipment such as portable terminal.
For example, one end of USB cable is inserted in the case where the smart phone to the USB operated type for being built-in with secondary cell charges
Enter to smart phone, the other end of USB cable is inserted into USB interface 40, so as to pass through the electric power exported from USB interface
It charges to smart phone.
USB interface 40 is USB connector, is in the present embodiment female head USB terminal.As an example, USB interface
40 can be using DCP (Dedicated Charging Port: special charging port) as defined in USB standard.But, USB interface
40 are not limited by DCP, and SDP (Standard Downstream Port: standard down interface) or CDP can also be used
(Charging Downstream Port: charging downstream interface) etc..
USB interface 40 is arranged on main body 130.In the present embodiment, although being arranged on the basal part of main body 130
132 pedestal portion 132a, but be not limited by this.For example, the cradle portion in main body 130 also can be set in USB interface 40
131.In this case, USB interface 40 can be installed in substrate identical with the circuit substrate for constituting power supply unit 30.Separately
Outside, USB interface 40 can also be arranged on the position other than main body 130.
It is supplied to the variation of the output of the electric power of USB interface 40 relative to illumination region 10, from power supply unit 30 with opposite phase
Pass relationship changes.Therefore, the output phase of USB interface 40 for the output of illumination region 10 variation, with opposite correlativity
To change.Specifically, variation of the output phase of USB interface 40 for the brightness of the light exported from illumination region 10, with opposite
Correlativity changes.
Receiving portion 50 is to receive the interface from external instruction.For example, receiving portion 50 receives from user to from illumination region
The light modulation instruction that the brightness of the light of 10 outputs changes, or receive the lighting of illumination region 10 or the lighting turned off the light is turned off the light finger
Show.
Receiving portion 50 is, for example, the operation button of contact witch etc..In the present embodiment, receiving portion 50 has conduct
The power knob 51, first of operation button dims button 52 and the second light modulation button 53.
Power knob 51 is the switch controlled for the connecting and disconnecting of the power supply to luminaire 1.For example, shining
When funerary objects tool 1 is turned off the light, if user presses power knob 51,1 lighting of luminaire.Specifically, turning off the light in luminaire 1
When, when power knob 51 is pressed, point modulating signal is output to power supply unit 30 from control unit 60, and electric power is from power supply unit 30 (first
Power circuit 31) it is fed into illumination region 10, thus 10 lighting of illumination region.Accordingly, 1 lighting of luminaire.
In addition, if user presses power knob 51, luminaire 1 is turned off the light in 1 lighting of luminaire.It is specific and
Speech, in 1 lighting of luminaire, when power knob 51 is pressed, signal of turning off the light is output to power supply unit 30 from control unit 60,
Stop from power supply unit 30 (the first power circuit 31) to the power supply of illumination region 10, so that illumination region 10 is turned off the light.Accordingly, it illuminates
Utensil 1 is turned off the light.
First light modulation button 52 and the second light modulation button 53 are opened for what the brightness to luminaire 1 changed
It closes.That is, the first light modulation button 52 and the second light modulation button 53 are the switches for carrying out brightness adjustment control to illumination region 10.
First light modulation button 52 is the switch for making the brightness of luminaire 1 brighten.For example, when user presses the first tune
When light button 52, according to the number being pressed or the duration being pressed, to make the illumination light irradiated from illumination region 10
Brightness brightens.Specifically, in 1 lighting of luminaire, when the first light modulation button 52 is pressed, for making illumination region 10
The signal that illumination light brightens is output to power supply unit 30 as dim signal, from control unit 60, electric power corresponding with the dim signal
It is supplied to illumination region 10 from power supply unit 30 (the first power circuit 31), so that the illumination light of illumination region 10 brightens.In this way, luminaire
The brightness of tool 1 brightens.
In addition, the second light modulation button 53 is the switch for keeping the brightness of luminaire 1 dimmed.For example, when user presses
When the second light modulation button 53, according to the number being pressed or the duration pressed, to make the illumination irradiated from illumination region 10
The brightness of light is dimmed.Specifically, in 1 lighting of luminaire, if the second light modulation button 53 is pressed, for making illumination region
The dimmed signal of 10 illumination light is output to power supply unit 30 from control unit 60 as dim signal, electricity corresponding with the dim signal
Power is fed into illumination region 10 from power supply unit 30 (the first power circuit 31), so that the illumination light of illumination region 10 is dimmed.In this way, according to
The brightness of funerary objects tool 1 is dimmed.
Power knob 51, first dims button 52 and the second light modulation button 53 can be mechanical switch, can also be with
It is the touch sensor of electrostatic capacitance.Also, power knob 51, first dims button 52 and the second light modulation button 53 can
With the identical substrate of the circuit substrate for being installed in being constituted power supply unit 30, other substrates can also be installed in.In addition, electric
Source button 51, first dims button 52 and the second light modulation button 53 and can be made of the touch screen with operation screen.
Control unit 60 is output to power supply unit according to the instruction from the user received by receiving portion 50, by defined signal
30.For example, receive light modulation instruction in receiving portion 50 or lighting is turned off the light when indicating, control unit 60 is according to receiving in receiving portion 50
Instruction that light modulation indicates or lighting is turned off the light, is output to power supply unit for the dim signal for being used to change the brightness of illumination region 10
30, it will be used to making 10 lighting of illumination region or the lighting turned off the light signal of turning off the light to be output to power supply unit 30.In addition, being exported from control unit 60
Dim signal to power supply unit 30 is, for example, PMW dimming control signal, but is not limited by this.
Control unit 60 is, for example, the MCU for being equipped with CPU (Central Processing Unit: central processing unit)
(Micro Controller Unit: micro controller unit) or MPU (Micro Processor Unit: microprocessor unit)
Deng control IC.In this case, control unit 60 (control IC) for example can be installed in and constitute the circuit base of power supply unit 30
The identical substrate of plate.
Then, referring to Fig. 2 and defeated to the slave illumination region 10 in the luminaire 1 involved in present embodiment using Fig. 3
The brightness (light output) of light out and the relationship of the output (USB output) of USB interface 40 are illustrated.Fig. 3 shows embodiment party
One example of the relationship of the output of the light output and USB interface 40 of the illumination region 10 in luminaire 1 involved in formula 1.
In addition, in the present embodiment, as AC adapter 20, use specified input capacity (rated capacity) for
40VA, the switching regulator AC adapter that output characteristics is 15V/1.2A.In this case, AC adapter 20 is by the friendship of AC100V
Galvanic electricity power is converted to the direct current power of 15V, and the direct current power of 15V is supplied from AC adapter 20 to power supply unit 30.Also, as
Illumination region 10 uses the LED module that input voltage is 140mA for 60V, input current.Also, as USB interface 40, use is defeated
Electric current (I outout) it is 0.5A, output voltage (Vout) be 5V CDP.
Luminaire 1 in the present embodiment, as previously discussed, with the brightness (light for the light that retinue's illumination region 10 exports
Output), keep being output into for USB interface 40 variable.Specifically, making the output phase of USB interface 40 for defeated from illumination region 10
The variation of the brightness of light out is changed in a manner of becoming opposite correlativity.
For example, receiving the light modulation instruction changed for the brightness to illumination region 10 or illumination region by receiving portion 50
10 lighting is turned off the light in the case where instruction (lighting indicates/turn off the light instruction), and control unit 60 is according to the light modulation received in receiving portion 50
Instruction or lighting are turned off the light instruction, and dim signal or lighting signal (putting modulating signal/signal of turning off the light) of turning off the light are output to power supply unit 30.
Accordingly, power supply unit 30 according to from control unit 60 dim signal or lighting turn off the light signal so that output and the hair of USB interface 40
The light output in light portion 10 is that the mode of opposite correlativity changes, thus by defined electric power respectively to illumination region 10 with
And USB interface 40 supplies.
In the present embodiment, the output violent change circuit of USB interface 40 become multistage segmentation, as shown in Fig. 3, from shine
The brightness for the light that portion 10 exports and the output of USB interface 40 are changed with three modes of three phases as the multistage.
Specifically, as shown in figure 3, the case where the brightness of the light exported from illumination region 10 is the first mode of maximum value
Under the case where (that is, illumination region 10 be whole lamp lighting), the output of USB interface 40 is minimum.
For example, receiving the point for making the whole lamp lighting of illumination region 10 (100% light modulation) by receiving portion 50 in Fig. 2
In the case that lamp indicates, a modulating signal is output to power supply unit 30 by control unit 60.Accordingly, it is supplied in illumination region 10 from power supply
The electric power for being used to make the whole lamp lighting of illumination region 10 of first power circuit 31 in portion 30.In the present embodiment, the first power supply electricity
A part that road 31 will be supplied to the DC voltage (DC15V) of power supply unit 30 from AC adapter 20 carries out DC-DC conversion, and boosts
For DC60V.Accordingly, apply the DC voltage of 60V from the first power circuit 31 to illumination region 10, illumination region 10 carries out whole lamp point
Lamp.
At this point, the output for supplying USB interface 40 from second source circuit 32 to USB interface 40 is the smallest electric power, USB is connect
Mouth 40 is output into minimum value.Specifically, second source circuit 32 will be supplied to the straight of power supply unit 30 from AC adapter 20
Others a part of galvanic electricity pressure (DC15V) carries out DC-DC conversion, becomes DC5V.In this case, from second source
Circuit 32 supplies the direct current power of 2.5W to USB interface 40.Accordingly, the output (current value) of USB interface 40 becomes minimum output
The 0.5A of value.
Also, as shown in figure 3, in the case where the brightness of the light exported from illumination region 10 is the second mode of minimum value
(that is, illumination region 10 is the case where turning off the light), the output of USB interface 40 is maximum value.
For example, in Fig. 2, receive by receiving portion 50 for making illumination region 10 turn off the light the instruction of turning off the light of (0% light modulation)
In the case where, the signal that will turn off the light of control unit 60 is output to power supply unit 30.Accordingly, from the first power circuit 31 of power supply unit 30 to hair
The supply of the electric power in light portion 10 stops.
At this point, the output for supplying USB interface 40 from second source circuit 32 to USB interface 40 is maximum electric power, USB is connect
Mouth 40 is output into maximum value.Specifically, second source circuit 32 will be supplied to the electricity of power supply unit 30 from AC adapter 20
A part of power (DC15V) carries out DC-DC conversion, and is output to USB interface 40.In this case, from second source circuit
32 supply the direct current power of 7.5W to USB interface 40.Accordingly, the output (current value) of USB interface 40 becomes maximum output value
1.5A。
Also, as shown in figure 3, of value of the brightness between minimum value and maximum value in the light exported from illumination region 10
In the case where three modes, the value of USB interface 40 being output between maxima and minima.In this case, in this reality
It applies in mode, the median of USB interface 40 being output between maxima and minima.
For example, in Fig. 2, when being received by receiving portion 50 for making the brightness of illumination region 10 be changed to whole lamp lighting
In the case where the light modulation instruction of 50% (50% light modulation), dim signal is output to power supply unit 30 by control unit 60.Accordingly, from power supply
First power circuit 31 in portion 30 is supplied to illumination region 10 for the light output of illumination region 10 to be dimmed to the electric power to 50%.At this
In embodiment, the first power circuit 31 will be supplied to one of the DC voltage (DC15V) of power supply unit 30 from AC adapter 20
Divide and carry out DC-DC conversion, to boost to it, in this way, applying defined direct current from the first power circuit 31 to illumination region 10
Voltage.
At this point, the output for supplying USB interface 40 from second source circuit 32 to USB interface 40 is between minimum and maximum
The electric power of value, the value of USB interface 40 being output between minimum value and maximum value.Specifically, second source circuit 32 will
The others a part for being supplied to the electric power (DC15V) of power supply unit 30 from AC adapter 20 carries out DC-DC conversion, and is output to
USB interface 40.In this case, the direct current power of 5.0W is supplied from second source circuit 32 to USB interface 40.Accordingly,
1.0A of the output (current value) of USB interface 40 as the median of 1.5A and 0.5A.
In this way, in the present embodiment, according to the brightness of the light exported from illumination region 10, the output electric current of USB interface 40
(Iout) change.In addition, even if the output electric current of USB interface 40 changes, the output voltage (V of USB interface 40out)
It is capable of fixing in substantially 5V.
Then, for the effect of the luminaire 1 in present embodiment, and including find the longitude and latitude of the utility model into
Row detailed description below.
Using the USB interface for being arranged on the electrical equipments such as PC, the portable terminals such as smart phone are filled
Electricity is previous known.
However, via AC adapter from the electrical equipment that source power supply is powered, if setting USB interface so that
When the charging of portable terminal is possibly realized, the load factor of AC adapter will increase, and become so as to cause the service life of AC adapter
It is short.
For example, shown in luminaire 1 in above-mentioned embodiment, if setting USB interface 40, makes the lighting of illumination region 10
When being performed simultaneously with the charging by USB interface 40, then the load factor of AC adapter 20 increases.
Specifically, as AC adapter 20, the use of input capacity is 40VA, output characteristics is opening for 15V/1.2A
In the case where the formula adapter of pass, the output power of AC adapter 20 is 18W.Also, as illumination region 10, according to input voltage
The LED module for being 140mA for 60V, input current, then the consumption power of illumination region 10 is 8.4W.In this case, if by electric
When the power loss in source portion 30 is thought of as 2W or so, AC adapter 20 when luminaire 1 is not provided with USB interface 40
Load factor then becomes 58% or so ((8.4W+2W)/18W ≈ 0.577).
In addition, as shown in the luminaire 1 in above-mentioned embodiment, as USB interface 40, if output electric current (Iout)
For 0.5A, output voltage (Vout) it is 5V, then it is 2.5W in the output power of USB interface 40.It in this case, if will be in electricity
The power loss in source portion 30 is thought of as 2W or so, then the load factor of AC adapter 20 becomes 72% or so ((8.4W+2.5W+
2W)/18W ≈ 0.716), compared with the case where being not provided with USB interface 40, the load factor substantial increase of AC adapter 20.
Here, if the load factor of AC adapter 20 is 72% or so, it is also it can be seen that negative even if setting USB interface 40
There are also more than needed for load rate.Specifically, if from the point of view of with the output power of AC adapter 20, in the above example, in AC adapter
About 5W (=18W- (8.4W+2.5W+2W)) is more than needed in 20 output power.
However, if only rising several percentages, the part of the rising also can if the load factor of AC adapter 20 rises
The service life of AC adapter 20 is set to shorten.If also, consider the inhomogenous of the work such as power supply unit 30, preferably with AC adapter 20
Load factor so that power supply unit 30 etc. is worked close to 100% state, if also, in view of with power supply unit 30 through when
Deterioration and power loss are through Shi Shangsheng, then the load factor as AC adapter 20, preferably less than 70%.
Also, in the charging of portable terminal for using USB interface, it is desirable to which the charging time is short.That is, it is desirable to the speed that charges
Degree is fast.Therefore, it to accelerate charging rate, and uses and exports biggish USB interface 40, then will lead to the negative of AC adapter 20
Load rate increases.For example, being directed to above-mentioned USB interface 40 (output electric current 0.5A/ output voltage 5V) according to output is 2 times
USB interface 40 (output electric current 1.0A/ output voltage 5V), when the power loss of power supply unit 30 is as described above 2W or so,
Then the load factor of AC adapter 20 becomes 86% or so ((8.4W+5.0W+2W)/18W ≈ 0.855), the load of AC adapter 20
Rate has biggish rising.If also, wanting that output is used (to export electric current for 3 times of USB interface 40 as USB interface 40
1.5A/ output voltage 5V), it is actually non-serviceable since the load factor of AC adapter 20 can be more than 100%.
Therefore, in order to increase the load factor of AC adapter 20 in the case where being provided with USB interface 40, and
It is considered that the AC adapter 20 big using rated capacity, still, the size of main body of the big AC adapter of rated capacity compares
Greatly, to cause AC adapter enlarged.Also, it is general less in the big AC adapter of rated capacity, to make specified appearance
Amount increases, will the case where using dedicated AC adapter in need.
The utility model is expected based on above-mentioned opinion.Then, the inventor of the utility model is by with keen determination
Discussion discovery, as long as the output of the tonic chord portion of electrical equipment can be adjusted, even if being provided with USB interface etc. in electrical equipment
In the case where power supply interface, linked by the output of the power supply interfaces such as the output and the USB interface that make the tonic chord portion of electrical equipment,
And carry out variable control, it will be able to the load factor of the electric power converters such as AC adapter be inhibited to increase.
Specifically, by being defeated with the tonic chord portion of electrical equipment by the output control of the power supply interfaces such as USB interface
Out be changing into opposite correlativity, it will be able to inhibit increasing for the load factor of the electric power converters such as AC adapter.
Especially, it is electric to illumination region supply when being dimmed to be conceived to luminaire for the inventor of the utility model
The variation of power is larger, to expect the variation of the brightness of the variation of the output for making USB interface relative to the light exported from illumination region
As opposite correlativity.
Specifically, being maximum in the brightness of the light exported from illumination region 10 in luminaire 1 in the present embodiment
In the case where value, make USB interface 40 is output into minimum value, is minimum value in the brightness of the light exported from illumination region 10
In the case of, make USB interface 40 is output into maximum value.
Also, in luminaire 1 in the present embodiment, even if can also change when illumination region 10 is dimmed
The output of USB interface 40.Specifically, in value of the brightness between minimum value and maximum value of the light exported from illumination region 10
In the case of, make the value of USB interface 40 being output between maxima and minima.
In this way, the brightness adjustment control of luminaire 1 is utilized in the present embodiment, in the big situation of the light output of illumination region 10
Under, so that the output of USB interface 40 is become smaller, in the case where the light output of illumination region 10 is small, the output of USB interface 40 is made to become larger.
Hereby it is possible to inhibit to increase from power supply unit 30 to the electric power that illumination region 10 and USB interface 40 supply.In this way, even if setting USB
Interface 40 is also able to suppress the electric power supplied from AC adapter 20 to power supply unit 30 and increases, and inhibits the load of AC adapter 20
Rate increases.
Therefore, the service life for being able to suppress AC adapter 20 shortens.Also, as AC adapter 20, without main body ruler
The big AC adapter of the very little rated capacity to become larger, and can use small-sized.In such manner, it is possible to using universal AC adapter
20。
Moreover, because can reduce maximum load power, therefore it can reduce and be produced in the circuit element for constituting power supply unit 30
Raw heat, and be able to suppress electrolytic capacitor etc. to caused by the heat deterioration of the weaker circuit element of heat power supply unit 30 it is bad
Change.Moreover, by reducing maximum load power, so as to reduce the maximum rated capacity of AC adapter 20, so as to the phase
To cost effective.
Also, even if the output for increasing USB interface 40 can since the light output of illumination region 10 can be made to become smaller
The load factor for avoiding AC adapter 20 is more than 100%.Accordingly, come to smart phone etc. USB cable is connected to USB interface 40
In the case that portable terminal is charged, by reducing the light output of illumination region 10, so as to not give AC adapter 20
Simply accelerate the charging rate of portable terminal in the case where bringing big load.Especially without using (the hair of luminaire 1
Light portion 10) light in the case where, luminaire 1 can be made to turn off the light, thus with most fast speed come to portable terminal charge.
As previously discussed, by luminaire 1 involved in present embodiment, no matter using AC adapter 20
Whether electrical equipment is provided with USB interface 40, and the load factor of AC adapter 20 can be inhibited to increase.
Although also, in the present embodiment as shown in figure 3, make from illumination region 10 export light brightness (light output) with
And it is multiple stages that the output of USB interface 40, which changes, but be not limited by this.Such as shown in Fig. 4, it can also make from luminous
The brightness of light and the output of USB interface 40 that portion 10 exports are linear change.Accordingly, in 1 continuous light tuning of luminaire,
Variation is also recurred in the output of USB interface 40.In this case, as shown in figure 5, can make from the output of illumination region 10
While the brightness of light changes linearly, the output of USB interface 40 is made to change with multiple stages.Or can be, such as Fig. 6
It is shown, while making the brightness of light exported from illumination region 10 change with multiple stages, make the output of USB interface 40 be in
Linear change.
In addition, in the present embodiment, although becoming the output of USB interface 40 and the light output linkage of illumination region 10
Change, but be not limited by this, luminaire 1 can also be configured to make the defeated of the light output of illumination region 10 and USB interface 40
It separately changes out.
In this case, receiving portion 50 for example receives the output change instruction for making the output change of USB interface 40.
At this point, control unit 60 will be used to make the defeated of the output change of USB interface 40 according to the output change instruction received by receiving portion 50
Change signal is output to power supply unit 30 out.Then, power supply unit 30 changes signal according to the output, provides electric power to USB interface 40,
To change the output of USB interface 40.Hereby it is possible to change the output of USB interface 40 by external input.
(embodiment 2)
Then, luminaire involved in embodiment 2 is illustrated using Fig. 7.Fig. 7 shows 2 institute of embodiment
One of the relationship of the output (USB output) of the rated capacity and USB interface 40 of AC adapter 20 in the luminaire being related to
Example.
The composition of luminaire involved in present embodiment is shone with involved in above-mentioned embodiment 1 shown in Fig. 2
The composition of funerary objects tool 1 is identical.The output of the USB interface 40 of present embodiment is that variable place is identical as above-mentioned embodiment 1,
It is but directed in above-mentioned embodiment 1 and follows the light output of illumination region 10 and the output of USB interface 40 is made to change it
Place, in the present embodiment for according to the capacity for the AC adapter 20 for being connected to main body 130, to make the output of USB interface 40
It changes.Also, the output phase of USB interface 40 is for being connected the size of the capacity of the AC adapter 20 of main body 130,
It is changed with positive correlativity.
Specifically, as shown in fig. 7, specified appearance among the multiple AC adapters 20 that will be connect with main body 130
Amount it is maximum (in the case where being connected to main body 130 in the present embodiment for the AC adapter 20 of 50VA), USB interface 40 it is defeated
(current value) becomes the 1.5A of maximum output value out.
Also, the rated capacity minimum among the multiple AC adapters 20 that will be connect with main body 130 is (in this implementation
In the case that AC adapter 20 in mode for 30VA) is connected to main body 130, the output (current value) of USB interface 40 becomes most
The 0.5A of small output valve.
Also, the rated capacity among the multiple AC adapters 20 that will be connect with main body 130 is centre (in this reality
Apply in mode as 40VA) AC adapter 20 be connected to main body 130 in the case where, the output (current value) of USB interface 40 becomes
The 1.0A of median between maxima and minima.
In this way, in the present embodiment, according to the size of the rated capacity for the AC adapter 20 for being connected to main body 130,
To change the output of USB interface 40.Accordingly, it even if being provided with USB interface 40 in luminaire 1, is also able to suppress from AC and is adapted to
Device 20 is supplied to the increase of 30 electric power of power supply unit, and the load factor for being equally able to suppress AC adapter 20 with above embodiment 1 increases.
Also, pass through present embodiment, additionally it is possible to minimize DC/DC converter.That is, without change illumination region 10 and
The composition of the first power circuit 31 of illumination region 10 is driven, and can be by feeding electrical power to the second source of USB interface 40
The composition of circuit 32, to change the output of USB interface 40.Hereby it is possible to the load factor of AC adapter 20 be reduced, so as to the phase
Life to AC adapter 20.
Moreover, by present embodiment, due to only by selecting AC adapter 20 that can select the defeated of USB interface 40
Out, therefore the output of USB interface 40 can simply be changed.
In addition, in the present embodiment, although in the brightness adjustment control without illumination region 10, no matter with main body 130
How is the size of the rated capacity of the AC adapter 20 of connection, and the brightness of the light exported from illumination region 10 is kept constant, still
Not it is limited by this.
For example, the threshold value as defined in the rated capacity ratio for the AC adapter 20 for being connected to main body 130 is small and is connected to
In the case that the bearing power of the external equipment of USB interface 40 is bigger than defined threshold value, automatically illumination region 10 can be carried out
Light modulation, to make the brightness of the light exported from illumination region 10 become smaller.Accordingly, it is being connected to the negative of the external equipment of USB interface 40
It carries in high-power situation, even if the rated capacity for being connected to the AC adapter 20 of main body 130 is small, can also ensure that USB connects
The output of mouth 40 is more than certain value.
Alternatively, the threshold value as defined in the rated capacity ratio for the AC adapter 20 for being connected to main body 130 is small and is connected to
In the case that the bearing power of the external equipment of USB interface 40 is bigger than defined threshold value, it can also make from the output of illumination region 10
Optical flare.Accordingly, be connected to the electrical load of external equipment of USB interface 40 it is big in the case where, be able to use family and pay attention to
Become overload status to AC adapter 20.
Also, in the present embodiment, it can come according to the output voltage for the AC adapter 20 for being connected to main body 130
The output of USB interface 40 is set to change.For example, can be to the output voltage for the AC adapter 20 for being connected to main body 130
Different (such as 12V, 15V, 24V etc.) is detected, according to the testing result, to change the output of USB interface 40.
Also, in the present embodiment, it can come according to the output electric current for the AC adapter 20 for being connected to main body 130
The output of USB interface 40 is set to change.For example, can output electric current to the AC adapter 20 that is connected to main body 130
Difference is detected (such as 0.6A, 1.0A, 1.2A etc.), becomes the output of USB interface 40 according to the testing result
Change.
(variation)
It is illustrated above based on embodiment 1 and 2 pair the utility model, but the utility model is not by above-mentioned reality
Mode 1 and 2 is applied to be limited.
It is illustrated that portable terminal is carried out by USB interface 40 for example, in above-mentioned embodiment 1 and 2
Charging, but be not limited by this.As long as specifically, the equipment that USB can power, so that it may pass through USB interface 40
Output can not only charge to charge, and equipment can also be made to work.
Also, in above-mentioned embodiment 1 and 2, although being provided with a USB interface 40, not it is limited by this.
For example, USB interface 40 can be set it is multiple.But, if setting is multiple in the case where the rated capacity of AC adapter 20 is small
USB interface 40, the then load factor that will lead to AC adapter 20 increase.It therefore, can in the case where multiple USB interface 40 are arranged
It is set with the rated capacity to AC adapter 20, so that the load factor of AC adapter 20 is less than 80%, preferably less than
70%, more preferably less than 60%.
Also, in above-mentioned embodiment 1 and 2, as USB interface 40, output electric current (I is usedout)=0.5A/
Output voltage (VoutThe interface of)=5V, but be not limited by this, it can also be using output electric current (Iout) be 1.0A, 1.2A,
The interface of 1.5A, 2.0A etc..
Also, in above-mentioned embodiment 1, although using rated capacity setting for 40VA as AC adapter 20
It is standby, but be not limited by this, rated capacity can also be used for equipment such as 15VA, 30VA, 50VA, 62VA.Also, as AC
The output characteristics of adapter 20 is not limited by this although output voltage is 15V, output electric current is 1.2A, suitable as AC
The output characteristics of orchestration 20, can output voltage to 12V, 15V, 24V, defeated with 0.6A, 1.0A, 1.2A, 1.5A, 1.75A
Electric current carries out any combination out.
Also, in above-mentioned embodiment 1 and 2, as the illustrated luminaire of electrical equipment, but not by
This is limited.For example, can be used as electrical equipment using export sound as the loudspeaker of the function of tonic chord, using image output as the function of tonic chord
Display, using export be cleaned after air as the air cleaner of the function of tonic chord, using export water mist as the function of tonic chord water mist send out
Raw device (humidifier etc.), to export wind as the electric fan of the function of tonic chord or to export fragrance as spicery diffuser of the function of tonic chord etc..
In this case, these electrical equipments can be desktop, may not be desktop.
Also, in above embodiment 1 and 2, as the illustrated desk lamp of luminaire, but not by this institute
Limit.As long as user can utilize when charging to portable terminal etc., the luminaire being also possible to other than desk lamp.
In addition, to above-mentioned each embodiment execute those skilled in the art it is conceivable that various modifications obtained from
Form and in the main scope for not departing from the utility model in each embodiment constituent element and function carry out
The form for arbitrarily combining and realizing is all contained in the utility model.
Claims (21)
1. a kind of electrical equipment, which is characterized in that
The electrical equipment has:
Tonic chord portion executes the function of tonic chord of the electrical equipment；
AC power is converted to direct current power by electric power converter；
Power supply interface, by being connect with external equipment, to feed electrical power to the external equipment；And
Power supply unit feeds electrical power to the tonic chord portion and the confession according to the direct current power from the electric power converter
Electrical interface,
The output of the power supply interface, relative to the variation of the output carried out by the tonic chord portion, with opposite correlativity
To change.
2. electrical equipment as described in claim 1, which is characterized in that
The electrical equipment is luminaire,
The tonic chord portion is the illumination region of output light,
The output of the power supply interface, the variation of the brightness relative to the light exported from the illumination region are closed with opposite correlation
System is to change.
3. electrical equipment as claimed in claim 2, which is characterized in that
The electrical equipment is further equipped with:
Receiving portion receives the light modulation changed to the brightness of the light exported from the illumination region and indicates；And
Control unit indicates according to the light modulation received by the receiving portion, dim signal is output to the power supply unit,
The power supply unit, according to the dim signal from the control unit so that the output of the power supply interface with from the hair
The brightness of the light of light portion output by opposite correlativity come in a manner of changing, Xiang Suoshu illumination region and the power supply interface point
It does not supply electric power.
4. electrical equipment as claimed in claim 3, which is characterized in that
The receiving portion also receives the output change instruction changed for the output to the power supply interface,
The control unit will be used for the output to the power supply interface according to the output change instruction received by the receiving portion
The output change signal changed, is output to power supply unit,
The power supply unit changes signal according to the output, the power supply interface is fed electrical power to, so that the power supply interface
Output change.
5. such as described in any item electrical equipments of claim 2 to 4, which is characterized in that
In the case where the brightness of the light exported from the illumination region is maximum value, the output of the power supply interface is minimum value,
In the case where the brightness of the light exported from the illumination region is minimum value, the output of the power supply interface is maximum value.
6. electrical equipment as claimed in claim 5, which is characterized in that
In the case where value of the brightness of the light exported from the illumination region between minimum value and maximum value, the power supply interface
Value of the output between maxima and minima.
7. electrical equipment as claimed in claim 2, which is characterized in that
The brightness of the light exported from the illumination region is changed with multiple stages.
8. electrical equipment as claimed in claim 2, which is characterized in that
The brightness of the light exported from the illumination region changes linearly.
9. electrical equipment as claimed in claim 7 or 8, which is characterized in that
The output of the power supply interface is changed with multiple stages.
10. electrical equipment as claimed in claim 7 or 8, which is characterized in that
The output of the power supply interface changes linearly.
11. such as described in any item electrical equipments of claim 2 to 4, which is characterized in that
The power supply unit has the first power circuit and second source circuit, and first power circuit will be from the electric power
A part of the direct current power of converter output carries out DC-DC conversion, and direct current power is supplied to the tonic chord portion, described
Others a part of the direct current power exported from the electric power converter is carried out DC-DC conversion by second source circuit, and will
Direct current power is supplied to the power supply interface.
12. such as described in any item electrical equipments of claim 2 to 4, which is characterized in that
The luminaire is desk lamp.
13. such as described in any item electrical equipments of Claims 1-4, which is characterized in that
The power supply interface is USB interface.
14. such as described in any item electrical equipments of Claims 1-4, which is characterized in that
The electrical equipment has the main body for storing the power supply unit,
The power supply interface is arranged on the main body,
The electric power converter is connect in a manner of it can assemble and disassemble with the main body.
15. electrical equipment as claimed in claim 14, which is characterized in that
According to the size of the capacity for the electric power converter connecting with the main body, the output of the power supply interface becomes
Change.
16. electrical equipment as claimed in claim 15, which is characterized in that
According to the output voltage for the electric power converter connecting with the main body, the output of the power supply interface changes.
17. electrical equipment as claimed in claim 15, which is characterized in that
According to the output electric current for the electric power converter connecting with the main body, the output of the power supply interface changes.
18. electrical equipment as claimed in claim 15, which is characterized in that
The output of the power supply interface, the size of the capacity relative to the electric power converter are changed with positive correlativity.
19. electrical equipment as claimed in claim 15, which is characterized in that
It is small in the threshold value of the capacitive radio regulation for the electric power converter being connect with the main body and connect with the power supply interface
External equipment bearing power it is bigger than defined threshold value in the case where, become smaller by the output that the tonic chord portion carries out.
20. electrical equipment as claimed in claim 19, which is characterized in that
The electrical equipment is luminaire,
The tonic chord portion is the illumination region of output light,
It is small in the threshold value of the capacitive radio regulation for the electric power converter being connect with the main body and connect with the power supply interface
External equipment bearing power it is bigger than defined threshold value in the case where, the brightness of light exported from the illumination region becomes smaller.
21. electrical equipment as claimed in claim 19, which is characterized in that
The electrical equipment is luminaire,
The tonic chord portion is the illumination region of output light,
It is small in the threshold value of the capacitive radio regulation for the electric power converter being connect with the main body and connect with the power supply interface
External equipment bearing power it is bigger than defined threshold value in the case where, from the illumination region export optical flare.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-159360 | 2017-08-22 | ||
| JP2017159360A JP2019040666A (en) | 2017-08-22 | 2017-08-22 | Electrical machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209415124U true CN209415124U (en) | 2019-09-20 |
Family
ID=65726447
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| CN201821328930.XU Active CN209415124U (en) | 2017-08-22 | 2018-08-16 | Electrical equipment |
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| CN (1) | CN209415124U (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012008869A (en) * | 2010-06-25 | 2012-01-12 | Panasonic Corp | Information processor |
| EP2728439A1 (en) * | 2012-10-31 | 2014-05-07 | Thomson Licensing | Device and method for electric power management of a plurality of peripheral interfaces |
| JP6296386B2 (en) * | 2014-03-11 | 2018-03-20 | パナソニックＩｐマネジメント株式会社 | Light control device and lighting system using the same |
| JP3199292U (en) * | 2015-06-04 | 2015-08-13 | 桐▲郷▼市太▲閣▼灯具有限公司Ｔｏｎｇｘｉａｎｇ Ｃｉｔｙ Ｔａｉｇｅ Ｌｉｇｈｔｉｎｇ Ｃｏ．， Ｌｔｄ． | LED desk lamp |
| JP3205826U (en) * | 2016-05-24 | 2016-08-18 | ナガタ産業株式会社 | LED drive circuit |
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