CN107404785A

CN107404785A - Signal sending and receiving device, lighting system, ligthing paraphernalia and illuminator

Info

Publication number: CN107404785A
Application number: CN201710288869.4A
Authority: CN
Inventors: 元村正志; 小西洋史; 福田健; 福田健一
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2016-04-27
Filing date: 2017-04-27
Publication date: 2017-11-28
Anticipated expiration: 2037-04-27
Also published as: JP2017201613A; JP6771182B2; CN107404785B

Abstract

The present invention provides signal sending and receiving device, lighting system, ligthing paraphernalia and illuminator.Sender unit (2) includes input block (20), output unit (21) and reduction voltage circuit (10).Input block (20) is configured as receiving input voltage (V11).Output unit (21) is configured as exporting output voltage (V12).Reduction voltage circuit (10) is configured as controllably adjusting output voltage (V12) by reducing input voltage (V11).Reduction voltage circuit (10) includes the first capacitor (C1) and the second capacitor (C2), on-off circuit (24), inductor (L1), the first diode (D1) and the second diode (D2) and control circuit (22).On-off circuit (24) includes the series circuit of first switch (Q1) and second switch (Q1).Control circuit (22) is configured as controlling first switch (Q1) and second switch (Q1) to change output voltage (V12) magnitude of voltage, so as to send transmission data from output unit (21).

Description

Signal sending and receiving device, lighting system, ligthing paraphernalia and illuminator

Technical field

The present invention relates generally to a kind of sender unit, signal receiving device, lighting system, ligthing paraphernalia and illumination system System.In particular it relates to for change the magnitude of voltage of D/C voltage with send transmission data sender unit, Yi Jiyong In the signal receiving device for receiving the transmission data sent from sender unit.Moreover, it relates to sent out including signal The lighting system of device, signal receiving device and lamp device is sent, includes the illumination of signal receiving device, lamp device and light source Utensil, including the illuminator of lighting system and light source, and the illuminator including sender unit and ligthing paraphernalia.

Background technology

Traditionally, as described in document 1 (JP2010-287372A), it has been proposed that including light modulator, supply unit and light The LED illumination System of source device.

The supply unit of LED illumination System described in document 1 includes AC/DC converters and dimming interface.The light modulation connects The dim signal that mouth is configured as dimmer in future is superimposed upon in the D/C voltage obtained from AC/DC converters.The light source fills Put including current controller and LED light source device.The current controller is configured as receiving the voltage (signal from dimming interface Superimposed voltage) and LED light source device is lighted as power supply by using Signal averaging voltage, while based on Signal averaging electricity Press to control the light output of LED light source.

Especially, the dimming interface of the LED illumination System described in document 1 has complicated circuit structure, and at least wraps Include seven transistors.There is a possibility that the loss (handoff loss etc.) in this seven transistors is big.That is, it is difficult to Reduce the loss in foregoing dimming interface.

The content of the invention

It is an object of the invention to provide realize low-loss sender unit, signal receiving device, lighting system, illumination Utensil and illuminator.

Sender unit according to an aspect of the present invention, including：Input block, it includes being configured as receiving DC The first input end of input voltage and the second input terminal；Output unit, it includes being configured as exporting DC output voltages First lead-out terminal and the second lead-out terminal, wherein the first lead-out terminal electrically connects with the first input end；And Reduction voltage circuit, it is arranged between the input block and the output unit, and is configured as by reducing the input Voltage controllably adjusts the output voltage, wherein, the reduction voltage circuit includes：First capacitor, it is connected electrically in described Between first input end and second input terminal；Second capacitor, it is connected electrically in the first lead-out terminal and institute State between the second lead-out terminal；On-off circuit, it includes the series circuit of first switch and second switch, and with parallel way Electrically connected with first capacitor；Inductor, it includes being electrically connected with the tie point of the first switch and the second switch The first terminal connect and the Second terminal electrically connected with the tie point of second capacitor and second lead-out terminal； First diode, it is electrically connected with parallel way with the first switch, and is had with the first switch described first The negative electrode of the terminal electrical connection of the hot side of switch and with the first switch the first switch low potential side The anode of terminal electrical connection；Second diode, it is electrically connected with parallel way with the second switch, and with described the Two switch the second switch hot side terminal electrical connection negative electrode and with the second switch described second The anode of the terminal electrical connection of the low potential side of switch；And control circuit, it is configured as controlling the first switch and institute Second switch is stated, wherein, the control circuit is configured as controlling the first switch and the second switch described to change The magnitude of voltage of output voltage, so as to send transmission data from the output unit.

Signal receiving device according to an aspect of the present invention, including：Connecting portion, it is configured as sending out with the signal The output unit of device is sent to electrically connect；And receiving circuit, it is configured as detection input to described in the connecting portion The change of the magnitude of voltage of output voltage, to obtain the transmission data.

Lighting system according to an aspect of the present invention, including：The sender unit of above-mentioned aspect；Signal receives dress Put, it includes：Connecting portion, it is electrically connected with the output unit of the sender unit, and receiving circuit, its by with Detection input is set to the change of the magnitude of voltage of the output voltage of the connecting portion to obtain the transmission data；And point Bright device, it is configured as by the output voltage exported from the output unit come some bright light sources, wherein, it is described to light Device is configured as transmission data that the receiving circuit based on the signal receiving device obtained to change to institute State the output of light source.

Ligthing paraphernalia according to an aspect of the present invention, including：The signal receiving device of above-mentioned aspect；Light source；And Lamp device, it is configured to, with coming from the output voltage of the output unit output of the sender unit The bright light source, wherein, the lamp device is configured as the receiving circuit based on the signal receiving device and obtained The transmission data change the output to the light source.

Illuminator according to an aspect of the present invention, including：The lighting system of above-mentioned aspect；The light source, its quilt It is configured to light by the lamp device of the lighting system；DC power source apparatus, its be configured as be to described light The input block of the sender unit in system applies the input voltage；And operation device, it is configured as Operation input is received, and operation signal is exported to the sender unit, wherein, the sender unit is configured as The transmission data are sent based on the operation signal.

Illuminator according to an aspect of the present invention, including：The sender unit of above-mentioned aspect；Ligthing paraphernalia, It includes signal receiving device, and the signal receiving device includes：Connecting portion, its described output with the sender unit Unit electrically connects, and receiving circuit, and it is configured as detection input to the magnitude of voltage of the output voltage of the connecting portion Change to obtain the transmission data；DC power source apparatus, it is configured as the input list to the sender unit Member applies the input voltage；And operation device, it is configured as receiving operation input, and to the sender unit Operation signal is exported, wherein, the sender unit is configured as sending the transmission data based on the operation signal.

Brief description of the drawings

Fig. 1 is to include sender unit, signal receiving device, lighting system and ligthing paraphernalia according to one embodiment Illuminator structure figure；

Fig. 2 is the timing diagram for illustrating the action of sender unit；

Fig. 3 is the timing diagram for illustrating another action of sender unit；

Fig. 4 is related to the another action of sender unit, and is the change for illustrating the electric current for flowing through inductor Oscillogram；

Fig. 5 is the timing diagram for illustrating the action of the sender unit in the 3rd control model；

Fig. 6 is the timing diagram for illustrating the action of the sender unit in the 4th control model；

Fig. 7 is the timing diagram for illustrating another action of the sender unit in the 4th control model；

Fig. 8 is the timing diagram for illustrating the another action of the sender unit in the 4th control model；And

Fig. 9 is the stereogram of sender unit and ligthing paraphernalia.

Description of reference numerals

1 DC power source apparatus

2 sender units

3 lamp devices

4 light sources

5 operation devices

6 signal receiving devices

7 lighting systems

8 ligthing paraphernalias

10 reduction voltage circuits

11 the first terminals

12 Second terminals

20 input blocks

20A first input ends

The input terminals of 20B second

21 output units

21A first lead-out terminals

The lead-out terminals of 21B second

22 control circuits

24 on-off circuits

60 connecting portions

62 receiving circuits

100 illuminators

C1 capacitors

C2 capacitors

D1 internal body diodes (the first diode)

D2 internal body diodes (the second diode)

L1 inductors

P1 tie points

P2 tie points

Q1 switchs (first switch)

Q2 switchs (second switch)

Embodiment

Hereinafter, with reference to figure 1~5 sender unit 2 of one embodiment will be illustrated.Preferably, as shown in figure 1, letter Number dispensing device 2 includes input block 20, output unit 21 and reduction voltage circuit 10.

Preferably, input block 20 includes being configured as the first input end 20A and second for receiving DC input voltages V11 Input terminal 20B.Second input terminal 20B can electrically connect with earth polar (earth polar of sender unit 2).That is, the One input terminal 20A can be the input terminal of hot side, and the second input terminal 20B can be the input of low potential side Terminal.Here, " electrical connection " means connected directly or indirectly.

Preferably, input block 20 electrically connects via a pair of feed path E11 and E12 with DC power source apparatus 1 described later.The One input terminal 20A can electrically connect with feed path E11 one end.Second input terminal 20B can be with feed path E12's One end electrically connects.A pair of feed paths E11 and the E12 other end can electrically connect with DC power source apparatus 1.In the present embodiment, Input block 20 receives input voltage V11 via a pair of feed path E11 and E12.That is, it is preferable that D/C power fills 1 is put to be configured as applying input voltage V11 to input block 20.

Preferably, output unit 21 includes being configured as the first lead-out terminal 21A and second for exporting DC output voltages V12 Lead-out terminal 21B.Output unit 21 can electrically connect via a pair of feed path E21 and E22 with lamp device 3 described later.The One lead-out terminal 21A can electrically connect with feed path E21 one end.Second lead-out terminal 21B can be with feed path E22's One end electrically connects.A pair of feed paths E21 and the E22 other end can electrically connect with lamp device 3.In the present embodiment, it is defeated Go out unit 21 and export output voltage V12 via a pair of feed paths E21 and E22.That is, it is preferable that lamp device 3 uses The output voltage V12 exported from output unit 21 is acted as power supply.In this example, from DC power source apparatus 1 via The electric power that sender unit 2 supplies to lamp device 3 is DC electric power, and from DC power source apparatus 1 to the distribution of lamp device 3 It is DC distribution.For example, output voltage V12 magnitude of voltage can be in the range of 30 [V]~40 [V].

Preferably, reduction voltage circuit 10 is configured as controllably adjusting output voltage V12 by reducing input voltage V11. In other words, reduction voltage circuit 10 is configured such that the effective and invalid of function for reducing input voltage V11 allows hand over. As shown in figure 1, reduction voltage circuit 10 can include two capacitors C1 and C2, inductor L1, two switch Q1 and Q2 and control Circuit 22.Two switch Q1 and Q2 each can for example be the normally off type (normally-off) MOSFET, and (metal oxide is partly led Body field-effect transistor).Pay attention to, below for the ease of description, capacitor C1 is referred to as " the first capacitor C1 ", and by electric capacity Device C2 is referred to as " the second capacitor C2 ".In addition, in the present embodiment, switch Q1 corresponds to first switch, and switch Q2 is corresponded to In second switch.Therefore, below will switch Q1 be referred to as " first switch Q1 ", and will switch Q2 be referred to as " second switch Q2 ".

Preferably, the first capacitor C1 is input capacitor, and is electrically connected with parallel way with input block 20.Also It is to say, the first capacitor C1 can be connected electrically between first input end 20A and the second input terminal 20B.First capacitor The terminal of C1 hot side can electrically connect with first switch Q1 drain electrode.First switch Q1 grid can be with control circuit 22 electrical connections.First switch Q1 source electrode can electrically connect with second switch Q2 drain electrode.Second switch Q2 grid can be with The electrical connection of control circuit 22.Second switch Q2 source electrode can electrically connect with the terminal of the first capacitor C1 low potential side. Second switch Q2 source electrode can also electrically connect with control circuit 22.In the present embodiment, first switch Q1 and second switch Q2 Series circuit form on-off circuit 24, and on-off circuit 24 is electrically connected with parallel way with the first capacitor C1.Fig. 1's In example, diode D1 represents first switch Q1 internal body diodes (body diode).That is, internal body diodes D1 with Parallel way electrically connects with first switch Q1.Specifically, internal body diodes D1 negative electrode and first switch Q1 hot side Terminal (first switch Q1 drain electrode) electrically connects, and the end of internal body diodes D1 anode and first switch Q1 low potential side Sub (first switch Q1 source electrode) electrical connection.In addition, in the example of fig. 1, diode D2 represents second switch Q2 inside two Pole pipe.That is, internal body diodes D2 is electrically connected with parallel way with second switch Q2.Specifically, internal body diodes D2 Negative electrode electrically connects with the terminal (second switch Q2 drain electrode) of second switch Q2 hot side, and internal body diodes D2 sun Pole electrically connects with the terminal (second switch Q2 source electrode) of second switch Q2 low potential side.In short, in the present embodiment, it is interior Portion diode D1 corresponds to the first diode, and internal body diodes D2 corresponds to the second diode.

First switch Q1 drain electrode can electrically connect with the terminal of the second capacitor C2 high potential then.Second capacitor C2 The terminal of low potential side can be electrically connected via inductor L1 with first switch Q1 source electrode.Specifically, the of inductor L1 One terminal 11 can electrically connect with first switch Q1 source electrode, and inductor L1 Second terminal 12 can be with the second capacitor The terminal electrical connection of C2 low potential side.In other words, inductor L1 the first terminal 11 can be with first switch Q1 and second Switch Q2 tie point (the first tie point) P1 electrical connections.Inductor L1 Second terminal 12 can be with the second capacitor C2 and Two lead-out terminal 21B tie point (the second tie point) P2 electrical connections.

Preferably, the second capacitor C2 is output capacitor, and is electrically connected with parallel way with output unit 21.Also It is to say, the second capacitor C2 can be connected electrically between first lead-out terminal 21A and the second lead-out terminal 21B.

Preferably, control circuit 22 is configured as controlling first switch Q1 and second switch Q2.Control circuit 22 can be by The hardware of CPU (CPU) and memory etc. and it is made up of the CPU programs performed.Control circuit 22 may be used also With including timer.Preferably, the program storage in memory, and for example by for performing control circuit described here The program of 22 control model is written in the memory.Control circuit 22 can include the first control model and the second control mould Formula is as control model.Preferably, the first control model is the control mould for forbidding output voltage V12 magnitude of voltage to change Formula, and the second control model are that the magnitude of voltage for making output voltage V12 changes to send transmission data from output unit 21 Control model.Here, " control first switch Q1 not only connects first switch Q1 with second switch Q2 " including control circuit 22 With second switch Q2 situation, but also include control circuit 22 disconnect first switch Q1 and second switch Q2 situation.Pay attention to, The details of transmission data will be illustrated later.

Preferably, control circuit 22 is configured as receiving the operation signal from operation device 5 described later.Control circuit 22 It can be additionally configured to based on whether have input operation signal to select one of the first control model and the second control model. Pay attention to, in the present embodiment, input voltage V11 is being applied with from DC power source apparatus 1 to the input block 20 of sender unit 2 In the case of, control circuit 22 is configured as independently selecting the first control model with operation signal as control model.

Preferably, as shown in Fig. 2 in the case where control model is the first control model, control circuit 22 keeps first Switch Q1 is off, and keeps second switch Q2 in an ON state.Therefore, in sender unit 2, output Voltage V12 magnitude of voltage (output voltage values) becomes with input voltage V11 magnitude of voltage (input voltage value) (in exemplary embodiments In be first voltage value v1) it is identical.That is, in the case where control model is the first control model, control circuit 22 can Output voltage V12 is used as to export the input voltage V11 inputted to input block 20 from output unit 21.Pay attention to, in showing for Fig. 2 In example, reference " Vq1 " represents that first switch Q1 grid voltage, and reference " Vq2 " represent second switch Q2's Grid voltage.In addition, the difference that " becoming identical " not only includes between input voltage value and output voltage values is 0 situation, and Also include the situation that the difference between input voltage value and output voltage values is regarded as substantially 0 sufficiently small value.For example, bag Include causes output voltage values with smaller than input voltage value because the voltage at the electronic building brick for forming reduction voltage circuit 10 declines The situation of value.

Preferably, in the case where have input operation signal from operation device 5, control circuit 22 is configured as believing operation Instruction included in number is converted into transmitting data.In the case where have input operation signal from operation device 5, control circuit 22 It can be additionally configured to select the second control model as control model, to control first to open based on the transmission data after conversion Close Q1 and second switch Q2.In the present embodiment, the instruction included in operation signal is the output for changing lamp device 3 The instruction of (output current).Specifically, the instruction included in operation signal is the illuminating state for changing light source 4 described later Instruction (for example, dimming level of light source 4).

In the case where control model is the second control model, as shown in figure 3, control circuit 22 can be configured as controlling First switch Q1 and second switch Q2, to cause output voltage V12 magnitude of voltage to change.Specifically, it is in control model In the case of second control model, control circuit 22 can control first switch Q1 and second switch Q2, to cause output voltage V12 magnitude of voltage switches between first voltage value v1 and second voltage value v2.In addition, it is the second control model in control model In the case of, control circuit 22 can be by output voltage V12 magnitude of voltage between first voltage value v1 and second voltage value v2 Switching, to send transmission data from output unit 21.Preferably, first voltage value v1 has the magnitude of voltage with input voltage V11 Identical value, and second voltage value v2 is the value obtained by reducing input voltage V11, and be than first voltage value v1 Small value.Pay attention to, in the example of fig. 3, reference " Vq1 " represents first switch Q1 grid voltage, and reference " Vq2 " represents second switch Q2 grid voltage.

Preferably, it is for changing the information of the illuminating state of light source 4 (dimming level of light source 4) to transmit data.Light modulation Level means the degree of the light output of light source 4.Dimming level when light source 4 is lighted into (specified to light) completely is set as 100 [%].Transmission data can be made up of 8 bit strings, and 8 bit strings are in a manner of one-to-one with having the light modulation of 256 grades Level is associated.For example, 100 [%] dimming level is associated with bit string " 00000000 ".50 [%] dimming level and example As bit string " 01111111 " is associated.0 [%] dimming level is associated with such as bit string " 11111111 ".Pay attention to, dim water It is flat to be not required as 256 grades, and can be 128 grades or 512 grades.That is, dimming level is not must Must be by 8 expressions, and can be represented by 7 or 9.Dimming level can have for example several grades or dozens of grade. In addition, 50 [%] dimming level is not necessary associated with bit string " 01111111 ", and can be with such as bit string " 10000000 " are associated.In addition, dimming level can continuously change (increase reduces), or can periodically change.

Preferably, in the case where the value (place value) of any position of transmission data is " 1 ", control circuit 22 is configured as Keep second switch Q2 be off in the state of, be repeatedly switched on the fixed cycle and disconnect first switch Q1, to cause Output voltage V12 magnitude of voltage becomes second voltage value v2.That is, transmission data any place value be " 1 " situation Under, control circuit 22 can be repeatedly switched in the state of keeping second switch Q2 to be off and disconnect first switch Q1, to cause output voltage V12 magnitude of voltage being reduced to second voltage value v2 from first voltage value v1.In the present embodiment, By being repeatedly switched in the state of keeping second switch Q2 to be off and disconnecting first switch Q1, control circuit 22 is released The electric charge accumulated in the second capacitor C2 is put, output voltage V12 magnitude of voltage is reduced to second from first voltage value v1 Magnitude of voltage v2.

In this case, in first switch Q1 in an ON state and when second switch Q2 is off, from The terminal of second capacitor C2 hot side is to first switch Q1, inductor L1 and the second capacitor C2 low potential side end The electric charge accumulated in the second capacitor C2 is discharged on the path (discharge path) of son.Now, in sender unit 2, stream Electric current IL1 increases through inductor L1, therefore electric current IL1 can exceed that inductor L1 rated current.Therefore, as shown in figure 4, Preferably, when have passed through the first scheduled time T1 from being connected first switch Q1 and second switch Q2 disconnects, control circuit 22 disconnect first switch Q1 and second switch Q2, to cause electric current IL1 not over rated current.First scheduled time T1 can be with It is such as 0.1 [ms].In this case, discharge path is from the terminal of the second capacitor C2 hot side to the first capacitor C1, second switch Q2 internal body diodes D2, inductor L1 and the second capacitor C2 low potential side terminal path.Separately Outside, in this case, in sender unit 2, the electric current IL1 for flowing through inductor L1 reduces.Pay attention to, the time t5 in Fig. 4 Represent the time point that first switch Q1 is connected and second switch Q2 disconnects.In addition, time t6 in Fig. 4 represents first switch Q1 and the The time point that two switch Q2 disconnect.Pay attention to, the reference " Vq1 " in Fig. 4 represents first switch Q1 grid voltage, and Fig. 4 In reference " Vq2 " represent second switch Q2 grid voltage.

Preferably, as shown in figure 4, control circuit 22 is configured as being disconnected from first switch Q1 and second switch Q2 When have passed through the second scheduled time T2, connect first switch Q1 and keep second switch Q2 to be off.Second is predetermined Time T2 can be such as 0.1 [ms].That is, control circuit 22, which can alternately repeat first switch Q1, is in connection shape Situation and first switch Q1 that state and second switch Q2 are off and the situation that second switch Q2 is off. Therefore, it in sender unit 2, can prevent electric current IL1 from exceeding rated current, and can discharge in the second capacitor C2 The electric charge accumulated.

Preferably, in the case where output voltage V12 magnitude of voltage reaches second voltage value v2 (time t2 in Fig. 3~ Time t3 period), control circuit 22 is configured as in the state of keeping first switch Q1 to be off with fixation Cycle is repeatedly switched on and disconnected second switch Q2.Therefore, output voltage V12 magnitude of voltage can be kept being in by control circuit 22 Second voltage value v2.The 3rd scheduled time T3 is have passed through being reached second voltage value v2 from output voltage V12 magnitude of voltage In the case of (period of time t3~time t4 in Fig. 3), control circuit 22 can also first switch Q1 keep be in It is repeatedly switched in the state of off-state and disconnects second switch Q2.3rd scheduled time T3 may, for example, be 10 [ms].Therefore, Output voltage V12 magnitude of voltage can be switched to first voltage value v1 by control circuit 22 from second voltage value v2.Pay attention to, Fig. 3 In time t1 represent output voltage V12 start change (decline) time point.Time t2 in Fig. 3 represents output voltage V12's Magnitude of voltage has reached second voltage value v2 time point.Time t3 in Fig. 3 represents to reach second from output voltage V12 magnitude of voltage The 3rd scheduled time T3 time point is have passed through from during magnitude of voltage v2.Time t4 in Fig. 3 is represented output voltage V12 magnitude of voltage First voltage value v1 time point is switched to from second voltage value v2.

On the other hand, in the case where the value of any position of transmission data is " 0 ", control circuit 22 can be configured as protecting Hold first switch Q1 to be off and keep second switch Q2 in an ON state, to cause output voltage V12 voltage Value becomes first voltage value v1.That is, in the case where the value of any position of transmission data is " 0 ", control circuit 22 can To keep first switch Q1 to be off and keep second switch Q2 in an ON state, to cause output voltage V12 Magnitude of voltage keep be in first voltage value v1.

Preferably, control circuit 22 forms the period (biography that 8 transmission data are sent from output unit 21 with 8 time slots The defeated period).8 time slots each have set time width T0 (with reference to figure 3).Value in any position of transmission data is " 1 " In the case of, control circuit 22 can be in time width T4 (time t1~times in Fig. 3 short the time width T0 than time slot T2 period) in output voltage V12 magnitude of voltage switched into second voltage value v2 from first voltage value v1.Pay attention to, in Fig. 3 Example in, within time t2~time t3 period, output voltage V12 magnitude of voltage is kept to be in second voltage value v2.In addition, in the example of fig. 3, within time t3~time t4 period, by output voltage V12 magnitude of voltage from second Magnitude of voltage v2 changes to first voltage value v1.

In the case where output voltage V12 magnitude of voltage is switched from second voltage value v2 to first voltage value v1, control When circuit 22 can be repeatedly switched in the state of first switch Q1 keeps being off and disconnect second switch Q2 progressively Increase second switch Q2 turn-on time.Specifically, control circuit 22 can change second switch Q2 turn-on time, to cause Second switch Q2 turn-on time gradually increases with output voltage V12 magnitude of voltage close to first voltage value v1.Namely Say, in the case where output voltage V12 magnitude of voltage is switched from second voltage value v2 to first voltage value v1, control circuit 22 The length of second switch Q2 turn-on time can be increased close to first voltage value v1 with output voltage V12 magnitude of voltage. Therefore, in sender unit 2, with the state of keeping first switch Q1 to be off, be repeatedly switched on and disconnect The situation for the turn-on time for not having to change second switch Q2 during second switch Q2 is compared, and can suppress the overvoltage to second switch Q2 Application.Pay attention to, in the present embodiment, by output voltage V12 magnitude of voltage from second voltage value v2 to first voltage value v1 Change second switch Q2 turn-on time in the case of change, but second switch Q2 turn-on time is not required to change.Example Such as, in the case where output voltage V12 magnitude of voltage is changed from second voltage value v2 to first voltage value v1, control circuit 22 It can be repeatedly switched in the state of keeping first switch Q1 to be off with the fixed cycle and disconnect second switch Q2.

It is preferred here that control circuit 22 controls first switch Q1 and second switch Q2, to cause the elder generation in transmission data Start bit is sent before head position, and last bit is sent after the stop bits of transmission data.The start bit can be used to lead to Know position or the bit string of the beginning of transmission period.The last bit can be the position or position of the end for the notification transmission period String.For example, start bit is the bit string of such as " 111 ", and last bit is the bit string of such as " 000 ".

In the case where control model is the second control model, control circuit 22 can be by changing output voltage V12's Magnitude of voltage to send the signal (transmission signal) for including start bit, transmission data and last bit from output unit 21.Pay attention to, passing It is aftermentioned in the case of not from the transmission last bit of sender unit 2 in the case that the data length of transmission of data is fixed Signal receiving device 6 can also judge the end of transmission period.

In addition, within the period (period transmission period beyond) different from transmission period, control circuit 22 First switch Q1 can be kept to be off and keep second switch Q2 in an ON state, to cause output voltage V12 magnitude of voltage becomes identical with input voltage V11 magnitude of voltage.That is, it have sent transmission letter from output unit 21 After number, control circuit 22 can select the first control model as control model.

In addition, control circuit 22 can also include the 3rd control model as control model.3rd control model is, for example, Stop the control model of the output of reduction voltage circuit 10.When control circuit 22 can occur abnormal in sender unit 2 or The 3rd control model is selected to be used as control model when by the way that dimming level is arranged into 0 [%] to disconnect light source 4.Such as Fig. 5 institutes Show, in the case where control model is the 3rd control model, control circuit 22 can keep first switch Q1 and second switch Q2 It is off.Therefore, in sender unit 2, output voltage V12 magnitude of voltage becomes 0, and can stop to point The power supply of bright device 3., can be with when occurring abnormal in sender unit 2 that is, in sender unit 2 Stop the power supply to lamp device 3 by disconnecting first switch Q1 and second switch Q2.Alternatively, send and fill in signal In putting 2, control circuit 22 can stop being depressured by controlling first switch Q1 and second switch Q2 in the 3rd control model The output of circuit 10 disconnects light source 4.Pay attention to, in the case where control model is the 3rd control model, control circuit 22 is kept First switch Q1 and second switch Q2 are off, but the configuration not limited to this.Only second switch Q2 can be kept It is off.That is, control circuit 22 be configured such that in control model be the 3rd control model feelings Second switch Q2 is at least kept to be off under condition.

It should be noted that in signal receiving device 6 and lamp device 3 likewise by the output voltage from reduction voltage circuit 10 In the case of being acted, signal receiving device 6 can stop during the period that the output of reduction voltage circuit 10 stops.So Afterwards, in the case where stopping power supply, the buffering for forming the control IC of the receiving circuit 62 of signal receiving device 6 described later is deposited The content stored in reservoir (volatile semiconductor memory) will lose.The content stored in buffer storage for example including The transmission data (dimming level) that signal receiving device 6 receives from sender unit 2.

Therefore, control circuit 22 can include the 4th control model as another control model.Preferably, the 4th control mould The magnitude of voltage that formula is to maintain output voltage V12 is in third voltage value v3 control model.Third voltage value v3 can be passed through The value for reducing input voltage V11 and obtaining, and second voltage value v2 can be less than and be higher than 0 [V].For instance, it is preferred that the 3rd Magnitude of voltage v3 is greater than or equal to that the content stored can be retained in the reception electricity of signal receiving device 6 in buffer storage The magnitude of voltage of magnitude of voltage in road 62.For example, included have input from operation device 5 to disconnect the operation of the instruction of light source 4 In the case of signal, control circuit 22 can select the 4th control model as control model.Pay attention to, defeated from operation device 5 Enter in the case of including to disconnect the operation signal of the instruction of light source 4, instead of selecting the 4th control model, control circuit 22 The transmission signal for including the transmission data for being used to specify dimming level to be in 0 [%] can be sent.As shown in fig. 6, in control mould In the case that formula is the 4th control model, control circuit 22 can first switch Q1 keep be off in the state of with Fixed cycle is repeatedly switched on and disconnected second switch Q2.Therefore, output voltage V12 magnitude of voltage can be kept being in the 3rd Magnitude of voltage v3.Pay attention to, it is preferable that control circuit 22, which is configured such that, to be kept output voltage V12 magnitude of voltage to be in the 3rd Magnitude of voltage v3 time T5 than in the second control model by output voltage V12 magnitude of voltage adjust to second voltage value v2 when Between (time width T4) it is long.That is, control circuit 22 within the time shorter than time width T4 by output voltage V12's For magnitude of voltage from the case that third voltage value v3 changes over first voltage value v1, signal receiving device 6 may will be from tertiary voltage Value v3 to first voltage value v1 change error detection is transmission signal.Therefore, if control circuit 22 to control mould the 4th Kept for the time in third voltage value v3 longer than time width T4 output voltage V12 magnitude of voltage in formula, then can prevented Error detection of the signal receiving device 6 to transmission signal.

Here, as shown in fig. 7, turning in control model from the first control model or the second control model to the 4th control model In the case of change, control circuit 22 can be repeatedly switched on and disconnect the in the state of keeping second switch Q2 to be off One switch Q1.Specifically, and then to period (time t1~time t2 in Fig. 7 after the 4th control mode switch Period) in, control circuit 22 can be repeatedly switched on and disconnect the in the state of second switch Q2 is disconnected with the fixed cycle One switch Q1.Therefore, in sender unit 2, output voltage V12 magnitude of voltage can be changed rapidly from first voltage value v1 Become (reduction) into third voltage value v3.

Alternatively, as shown in figure 8, in control model from the first control model or the second control model to the 4th control model In the case of transformation, control circuit 22 is repeatedly switched on and disconnected second in the state of keeping first switch Q1 to be off Switch Q2.Specifically, and then control model to after the 4th control mode switch period (time t1 in Fig. 8~ Time t2 period) in, control circuit 22 can be in the state of first switch Q1 off-states be kept with fixed cycle weight Second switch Q2 is switched on and off again.Therefore, can be by output voltage V12 magnitude of voltage from first in sender unit 2 Magnitude of voltage v1 gradually changes (reduction) to third voltage value v3.Pay attention to, output voltage V12 magnitude of voltage from first voltage value v1 In the case of switching to third voltage value v3, control circuit 22 can be as output voltage V12 magnitude of voltage be close to tertiary voltage Value v3 and cause second switch Q2 turn-on time it is longer.Therefore, in sender unit 2, with keeping first switch Q1 It is repeatedly switched in the state of being off and does not have change second switch Q2 turn-on time when disconnecting second switch Q2 Situation is compared, and can suppress to apply overvoltage to second switch Q2.

Preferably, as described above, sender unit 2 includes input block 20, output unit 21 and reduction voltage circuit 10.It is excellent Selection of land, reduction voltage circuit 10 include the first capacitor C1 and the second capacitor C2, on-off circuit 24, inductor L1, the first diode (first switch Q1 internal body diodes) D1, the second diode (second switch Q2 internal body diodes) D2 and control circuit 22.Preferably, control circuit 22 is configured as controlling first switch Q1 and second switch Q2, to change output voltage V12 electricity Pressure value, so as to send transmission data from output unit 21.That is, connect with the light modulation of the LED illumination System described in document 1 The structure of mouth (hereinafter referred to as " conventional apparatus ") is compared, and sender unit 2 can utilize simpler structure (circuit structure) To send transmission data.Therefore, compared with conventional apparatus, sender unit 2 can reduce the number for the switch for forming the device Amount, and can for example reduce the conduction loss in switch.That is, compared with transmitting device, sender unit 2 can be with Realize low-loss.

Document 1 describe the voltage (Signal averaging voltage) to be exported from dimming interface be have with from AC/DC converters The size of the D/C voltage obtained close to identical size voltage, and according to the connection of the dim signal for carrying out dimmer and Disconnect and change polarity.That is, in LED illumination System described in document 1, diode bridge is needed to being connect from light modulation The Signal averaging voltage of mouth carries out rectification.On the other hand, sender unit 2 has the following advantages that：Due to output voltage V12's Magnitude of voltage switches between first voltage value v1 and second voltage value v2, therefore output voltage V12 magnitude of voltage will not obtain To negative value, so as to which the diode such as described in document 1 becomes unnecessary.

Control circuit 22 in the state of keeping second switch Q2 to be off by being repeatedly switched on and disconnecting first Switch Q1 discharges the electric charge accumulated in the second capacitor C2, thus by output voltage V12 magnitude of voltage from first voltage Value v1 is reduced to second voltage value v2.Therefore, compared with the sender unit of following comparative example, sender unit 2 can be with Output voltage V12 magnitude of voltage is switched into second voltage value v2 from first voltage value v1 within the shorter time.Comparative example Sender unit is by being repeatedly switched in the state of keeping first switch Q1 to be off and disconnecting second switch Output voltage V12 magnitude of voltage is reduced to second voltage value v2 device by Q2 from first voltage value v1.In short, comparative example Sender unit be common buck circuit.Therefore, in sender unit 2, sent with the signal of comparative example Device is compared, and can reduce the transmission period of transmission data.That is, sender unit 2 can be when relatively short It is interior to send transmission data.

It is the second control model and output voltage V12 magnitude of voltage from first voltage value v1 to the second electricity in control model In the case that pressure value v2 switches, control circuit 22 is repeatedly switched on and broken in the state of keeping second switch Q2 to be off Open first switch Q1, but the structure not limited to this.It is the second control model and output voltage V12 voltage in control model Value from first voltage value v1 to second voltage value v2 switch in the case of, control circuit 22 can keep first switch Q1 be in connect Lead to state and keep second switch Q2 to be off.In this case, first switch Q1 can be have it is relatively high resistance to Press the MOSFET of performance.Pay attention to, sender unit 2 is repeatedly switched in the state of keeping second switch Q2 to be off With disconnection first switch Q1, it is possible thereby to which suppressing high current flows through first switch Q1, and prevent overvoltage from applying to first switch Q1.As a result, sender unit 2 can make first switch Q1 long lifetimes.

In addition, control model be the second control model and by output voltage V12 magnitude of voltage from second voltage value v2 to In the case that first voltage value v1 switches, control circuit 22 repeats to connect in the case where keeping first switch Q1 to be off On and off opens second switch Q2, but the structure not limited to this.It is the second control model and by output voltage V12 in control model Magnitude of voltage switch from second voltage value v2 to first voltage value v1 in the case of, control circuit 22 can keep first switch Q1 It is off and keeps second switch Q2 in an ON state.In this case, with keeping at first switch Q1 It is repeatedly switched on comparing with the situation for disconnecting second switch Q2 in the state of off-state, be able to will be exported within the shorter time Voltage V12 magnitude of voltage switches to first voltage value v1 from second voltage value v2.Therefore, with keeping first switch Q1 to be in disconnected It is repeatedly switched on comparing with the situation for disconnecting second switch Q2 in the state of open state, is off keeping first switch Q1 And in the case of keeping second switch Q2 in an ON state, the transmission period for transmitting data is shorter.As a result, signal is sent Device 2 can send transmission data within the shorter time.Pay attention to, high current may flow through second switch Q2, and overvoltage (excessive stress) may apply to second switch Q2, therefore second switch Q2 needs to be to have relative high withstand voltage The MOSFET of energy.

On the other hand, sender unit 2 keep first switch Q1 be off in the state of be repeatedly switched on and Second switch Q2 is disconnected, thus suppresses high current and flows through second switch Q2, and prevent overvoltage from applying to second switch Q2.Knot Fruit, sender unit 2 can suppress the increase of second switch Q2 loss, and make second switch Q2 long lifetimes.

First switch Q1 is not limited to MOSFET, and can be insulated gate bipolar transistor.In this case, first open Closing Q1 colelctor electrode can electrically connect with the terminal of the first capacitor C1 hot side, and first switch Q1 grid can be with control Circuit 22 processed electrically connects, and first switch Q1 emitter stage can electrically connect with second switch Q2 drain electrode.In addition, in the feelings Under condition, diode (external diode) can be connected electrically between first switch Q1 collector and emitter.The sun of diode It can extremely be electrically connected with first switch Q1 emitter stage, and the negative electrode of diode can be electrically connected with first switch Q1 colelctor electrode Connect.However, if first switch Q1 is MOSFET, internal body diodes D1 is electrically connected with parallel way with first switch Q1, therefore It compared with using situation of the insulated gate bipolar transistor to substitute MOSFET, can reduce the size of sender unit 2. That is, sender unit 2 includes first switch Q1 internal body diodes D1, without additional diode (outside two Pole pipe), therefore compared with the situation of insulated gate bipolar transistor and external diode is set, can have smaller size.

Above-mentioned sender unit 2 is only the example of the present invention, and the invention is not restricted to above-described embodiment.Remove Beyond above-described embodiment, various modifications can be carried out according to design etc., as long as technology of these deformations without departing from the present invention Concept.Hereinafter, the variation of the present embodiment will be enumerated.

In the case where output voltage V12 magnitude of voltage is changed from first voltage value v1 to second voltage value v2, control When circuit 22 can be repeatedly switched in the state of keeping second switch Q2 to be off and disconnect first switch Q1, make the One switch Q1 turn-on time changes over time.Specifically, the weight in the state of keeping second switch Q2 to be off When switching on and off first switch Q1 again, control circuit 22 can gradually increase first switch Q1 turn-on time.For example, control Circuit 22 can continuously change first switch Q1 turn-on time, to cause first switch Q1 turn-on time with output voltage V12 magnitude of voltage gradually increases close to second voltage value v2.In short, output voltage V12 magnitude of voltage is electric from first In the case that pressure value v1 switches to second voltage value v2, control circuit 22 can be as output voltage V12 magnitude of voltage be close to the Two magnitude of voltage v2 and increase first switch Q1 turn-on time.According to the structure, can suppress to be accumulated in the second capacitor C2 Electric charge quick release (discharge current from the second capacitor C2 drastically flows).Therefore, with keeping second switch Q2 It is repeatedly switched in the state of being off and does not have change first switch Q1 turn-on time when disconnecting first switch Q1 Situation is compared, and the structure makes it possible to suppress to apply overvoltage to first switch Q1.

In the case where output voltage V12 magnitude of voltage is switched from first voltage value v1 to second voltage value v2, control Circuit 22 can also be repeatedly switched in the state of keeping second switch Q2 to be off and make when disconnecting first switch Q1 First switch Q1 switching frequency changes over time.Specifically, in the state of keeping second switch Q2 to be off When being repeatedly switched on and disconnecting first switch Q1, control circuit 22 can gradually reduce first switch Q1 switching frequency.For example, control Circuit 22 processed can continuously change first switch Q1 switching frequency, to cause first switch Q1 switching frequency with output electricity Pressure V12 magnitude of voltage gradually reduces close to second voltage value v2.In short, by output voltage V12 magnitude of voltage from first In the case that magnitude of voltage v1 switches to second voltage value v2, control circuit 22 can approach with output voltage V12 magnitude of voltage Second voltage value v2 and reduce first switch Q1 switching frequency.Equally, according to the structure, can suppress in the second capacitor C2 The quick release for the electric charge accumulated (discharge current from the second capacitor C2 drastically flows).Therefore, with keeping second Switch Q2 is repeatedly switched on and not had when disconnecting first switch Q1 the switching for changing first switch Q1 in the state of being off The situation of frequency is compared, and the structure makes it possible to suppress to apply overvoltage to first switch Q1.

Here, in the state of keeping second switch Q2 to be off, be repeatedly switched on and disconnect first switch Q1's In the case of, control circuit 22 can be configured as the turn-on time and first switch Q1 for making first switch Q1 switching frequency this two Person changes over time.That is, in the state of keeping second switch Q2 to be off, it is repeatedly switched on and disconnects the In the case of one switch Q1, control circuit 22 can be configured as making first switch Q1 turn-on time and cutting for first switch Q1 Frequency at least one of which is changed over time to change.Changing the switching frequency of first switch Q1 turn-on time and first switch Q1 In the case of both rates, compared with changing the situation of first switch Q1 turn-on time or first switch Q1 switching frequency, It can further suppress to apply overvoltage to first switch Q1.

Control circuit 22 can periodically change first switch Q1 turn-on time, to cause first switch Q1 connection Time gradually changes with output voltage V12 magnitude of voltage close to second voltage value v2.Similarly, control circuit 22 can be with rank Change to section property first switch Q1 switching frequency, to cause electricity of the first switch Q1 switching frequency with output voltage V12 Pressure value gradually changes close to second voltage value v2.

In the case where output voltage V12 magnitude of voltage is switched from second voltage value v2 to first voltage value v1, control Circuit 22 can be repeatedly switched in the state of keeping first switch Q1 to be off and make the when disconnecting second switch Q2 Two switch Q2 switching frequency changes over time.Specifically, keep first switch Q1 be off in the state of, again In the case of switching on and off second switch Q2 again, control circuit 22 can gradually reduce second switch Q2 switching frequency.Example Such as, control circuit 22 can change second switch Q2 switching frequency, to cause second switch Q2 switching frequency with output Voltage V12 magnitude of voltage gradually reduces close to first voltage value v1.In short, by output voltage V12 magnitude of voltage from In the case that two magnitude of voltage v2 switch to first voltage value v1, control circuit 22 can connect with output voltage V12 magnitude of voltage Nearly first voltage value v1 and reduce second switch Q2 switching frequency.With the state being off in holding first switch Q1 Under be repeatedly switched on comparing with the situation for not having the switching frequency for changing second switch Q2 when disconnecting second switch Q2, the structure is same Overvoltage can be suppressed to apply to second switch Q2.

Here, in the state of first switch Q1 keeps being off, be repeatedly switched on and disconnect second switch Q2's In the case of, control circuit 22 can be configured as the turn-on time and second switch Q2 for making second switch Q2 switching frequency this two Person changes over time.That is, in the state of first switch Q1 keeps being off, it is repeatedly switched on and disconnects the In the case of two switch Q2, control circuit 22 can be configured as making second switch Q2 turn-on time and cutting for second switch Q2 Frequency at least one of which is changed over time to change.With changing second switch Q2 turn-on time or second switch Q2 switching frequency The situation of rate is compared, in the case of both the turn-on time for changing second switch Q2 and second switch Q2 switching frequency, Overvoltage can further be suppressed to be applied on second switch Q2.

Control circuit 22 can continuously or periodically change second switch Q2 turn-on time, to cause second switch Q2 turn-on time gradually increases with output voltage V12 magnitude of voltage close to first voltage value v1.

Similarly, control circuit 22 can continuously or periodically change second switch Q2 switching frequency, to cause Second switch Q2 switching frequency gradually reduces with output voltage V12 magnitude of voltage close to first voltage value v1.

Sender unit 2 can be between the terminal of first lead-out terminal 21A and the second capacitor C2 hot side Electrical path on be provided with for prevent electric current from output unit 21 flow into reduction voltage circuit 10 rectifier cell.The rectifier cell Such as can be diode.In this case, the anode of rectifier cell can be with the terminal of the second capacitor C2 hot side Electrical connection, and the negative electrode of rectifier cell can electrically connect with first lead-out terminal 21A.The structure can suppress overcurrent inflow Reduction voltage circuit 10, therefore the life-span of reduction voltage circuit 10 can be extended.Pay attention to, rectifier cell is not limited to diode, and can be such as It is P- channel mosfets.In this case, the source electrode of P- channel mosfets can be with the end of the second capacitor C2 hot side Son electrical connection, the grid of P- channel mosfets can electrically connect with control circuit 22, and the drain electrode of P- channel mosfets can be with Electrically connected with first lead-out terminal 21A.In addition, in this case, control circuit 22 can be the first control mould in control model P- channel mosfets are kept in the case of formula in an ON state, and can be the situation of the second control model in control model Lower holding P- channel mosfets are off.In addition, except first lead-out terminal 21A and the second capacitor C2 high potential Outside electrical path between the terminal of side, rectifier cell can also be arranged on the second lead-out terminal 21B and the second capacitor C2 Low potential side terminal between.In this case, the anode of rectifier cell can be with the second capacitor C2 low potential side Terminal electrically connects, and the negative electrode of rectifier cell can electrically connect with the second lead-out terminal 21B.In addition, rectifier cell is not limited to It is arranged in sender unit 2, but can be arranged in lamp device 3 or signal receiving device 6.

Control circuit 22 controls first switch Q1 and second switch Q2, to cause the beginning of time slot and output voltage V12's It is consistent to change the beginning of (decline), but the structure not limited to this.Control circuit 22 can be opened in the random time section in time slot Begin to change output voltage V12.

In addition, when have passed through the first scheduled time T1 from being connected first switch Q1 and second switch Q2 disconnects, control Circuit 22 processed disconnects first switch Q1 in the state of keeping second switch Q2 to be off, to cause electric current IL1 will not It can exceed rated current, but the structure not limited to this.Such as when electric current IL1 current value reaches threshold value (first threshold), Control circuit 22 can disconnect first switch Q1 in the state of keeping second switch Q2 to be off.In this case, Sender unit 2 can include the secondary winding with inductor L1 (first winding) magnetic couplings, and in secondary winding When the current value of caused electric current reaches first threshold, control circuit 22 can keep second switch Q2 to be off In the state of disconnect first switch Q1.In addition, in this case, the current value of caused electric current reaches 0 in secondary winding When, control circuit 22 can connect first switch Q1 in the state of keeping second switch Q2 to be off.

Hereinafter, explanation is included to the illuminator 100 of above-mentioned sender unit 2.As illustrated in fig. 1, it is preferred that illumination system System 100 includes DC power source apparatus 1, sender unit 2, lamp device 3, light source 4, operation device 5 and signal receiving device 6.

Preferably, DC power source apparatus 1 is configured as the AC voltage conversions of AC power supplies 200 into D/C voltage (input voltage V11).DC power source apparatus 1 can be additionally configured to export input voltage V11 to letter via a pair of feed paths E11 and E12 Number dispensing device 2.AC power supplies 200 may, for example, be source power supply.The virtual value of AC voltages for example can be 100 [V].AC voltages Frequency (supply frequency) for example can be 50 or 60 [Hz].Pay attention to, illuminator 100 need not be used as structure including AC power supplies 200 Into element.

Preferably, lamp device 3 is configured as the output voltage by being exported from the output unit 21 of sender unit 2 V12 carrys out some bright light sources 4.Lamp device 3 can be additionally configured to based on the receiving circuit 62 by signal receiving device 6 described later The transmission data obtained change the output (output current) to light source 4.In the example of fig. 1, lamp device 3 includes input Unit 30, output unit 31 and constant-current circuit 32.

Preferably, input block 30 is configured as via a pair of feed path E21 and E22 Rreceive output voltage V12.Input Unit 30 can include a pair of input terminals 30A and 30B.Input terminal 30A can be via feed path E21 and the first output end Sub- 21A electrical connections.Input terminal 30B can electrically connect via feed path E22 with the second lead-out terminal 21B.Input terminal 30B It can also be electrically connected with earth polar (earth polar of lamp device 3).

Preferably, output unit 31 electrically connects via a pair of feed path E31 and E32 with light source 4.Output unit 31 can be with Including a pair of output sub- 31A and 31B.Lead-out terminal 31A can electrically connect with feed path E31 one end.Lead-out terminal 31B It can be electrically connected with feed path E32 one end.The other end to feed path E31 and E32 can electrically connect with light source 4.

Preferably, constant-current circuit 32 be configured as the electric current I1 for making inflow light source 4 current value it is consistent with desired value.Constant current Circuit 32 for example can be step-down switching-converter.When desired value changes, constant-current circuit 32 can be by increasing or reducing Electric current I1 changes the illuminating state of light source 4.Pay attention to, in the present embodiment, flow into the electric current I1 and lamp device 3 of light source 4 Output current is corresponding.

Preferably, light source 4 includes multiple solid-state light emitting elements 40.Multiple solid-state light emitting elements 40 for example can be each LED (light emitting diode).LED can be inorganic LED or organic LED.Multiple solid-state light emitting elements 40 can be connected in series.Light source 4 can electrically connect in the terminal of anode-side via feed path E31 with lead-out terminal 31A.Light source 4 can be with the terminal of cathode side Electrically connected via feed path E32 with lead-out terminal 31B.

Preferably, operation device 5 can be configured as receiving the input operation that user is carried out.Operation device 5 can wrap Include operating unit.Operation device 5 can electrically connect with control circuit 22.Operation device 5 for example can be light modulator.Operating unit Example include driver plate (light-control knob), slider, push away signature button switch.When user operates operating unit, operation device 5 The instruction of the output of lamp device 3 can be made changing to control circuit 22.For example, the operation knot according to operating unit Fruit, operation device 5 can export to control circuit 22 to be included to change the operation signal of the instruction of the output of lamp device 3.

Preferably, signal receiving device 6 is configured as receiving the transmission data sent from sender unit 2.Such as Fig. 1 institutes Show, signal receiving device 6 can include connecting portion 60, branch pressure voltage 61 and receiving circuit 62.

Connecting portion 60 can be electrically connected via a pair of feed path E41 and E42 and sender unit 2 output unit 21 Connect.Connecting portion 60 can include the first connection terminal 60A and sub- 60B of second connection end.First connection terminal 60A can be via confession Electrically connected to path E41 with first lead-out terminal 21A.The sub- 60B of second connection end can export via feed path E42 and second Terminal 21B is electrically connected.Connecting portion 60 can be via a pair of feed path E41 and E42 Rreceive output voltage V12.

Branch pressure voltage 61 can be made up of two resistors R1 and R2 series circuit.Branch pressure voltage 61 can electrically connect Between the first connection terminal 60A and the sub- 60B of second connection end.Specifically, resistor R1 the first terminal and the first connection end Sub- 60A electrical connections.Resistor R1 Second terminal electrically connects with resistor R2 the first terminal.Resistor R2 Second terminal can To be electrically connected with the sub- 60B of second connection end.Branch pressure voltage 61 can divide the output voltage V12 inputted to connecting portion 60 Pressure, and the voltage (voltages at resistor R2 both ends) after partial pressure is exported to receiving circuit 62.

Preferably, receiving circuit 62 is configured as the change of the magnitude of voltage for the voltage that detection exports from branch pressure voltage 61, with Obtain transmission data.That is, receiving circuit 62 can detect the output voltage V12 inputted to connecting portion 60 magnitude of voltage Change, to obtain transmission data.Receiving circuit 62 can be additionally configured to PWM (pulse width modulation) signal outputs to constant current Circuit 32.Receiving circuit 62 is, for example, to control IC (integrated circuit).Control IC can include buffer storage.

Receiving circuit 62 can be adopted with fixed sample period to the voltage (detection voltage) exported from branch pressure voltage 61 Sample, and the magnitude of voltage for detecting voltage is stored to buffer storage.Preferably, the sampling period sends than sender unit 2 The time width T0 for transmitting 1 place value of data is short (referring to Fig. 3).Receiving circuit 62 can also be by will detect the voltage of voltage Value is compared to receive transmission signal (start bit, transmission data and last bit) with default Second Threshold.For example, detecting In the case that the magnitude of voltage of voltage is reduced to below Second Threshold, receiving circuit 62 may determine that has value " 1 " to receive Position, and the place value received is stored to buffer storage.Preferably, Second Threshold has more than second voltage value v2 and is less than First voltage value v1 value.In the present embodiment, receiving circuit 62 is configured as receiving in the case where receiving start bit The transmission data that will be sent after beginning position, and will transmission data storage to buffer storage.Receiving circuit 62 is additionally configured to Terminate the storage of the transmission data to buffer storage in the case where receiving last bit.

Preferably, dimming level of the receiving circuit 62 from the transmission digital independent light source 4 being stored in buffer storage.Connect The dimming level read out can also be converted into pwm signal by receiving circuit 62, and the pwm signal after conversion is exported to perseverance Current circuit 32.Receiving circuit 62 be able to will be adjusted by the dutycycle according to square wave of the dimming level change with the fixed cycle Light level is converted into pwm signal.For example, in the case where dimming level is 100 [%], dutycycle is arranged to by receiving circuit 62 100 [%].In addition, in the case where dimming level is 50 [%], dutycycle is arranged to 50 [%] by receiving circuit 62.In addition, In the case where dimming level is 0 [%], dutycycle is arranged to 0 [%] by receiving circuit 62.

Preferably, the constant-current circuit 32 of lamp device 3 is configured as changing based on the pwm signal from receiving circuit 62 The illuminating state of light source 4.Specifically, constant-current circuit 32 can change inflow light based on the pwm signal from receiving circuit 62 The electric current I1 in source 4 desired value.For example, in the case where the dutycycle of pwm signal is 100 [%], constant-current circuit 32 is by electric current I1 desired value is arranged to the current value (rated value) of the rated current of light source 4.It is 50 [%] feelings in the dutycycle of pwm signal Under condition, electric current I1 desired value is arranged to the value of the half of rated value by constant-current circuit 32.It is 0 in the dutycycle of pwm signal In the case of [%], electric current I1 desired value is arranged close to 0 value by constant-current circuit 32.

Hereinafter, the example of the action of illuminator 100 will be illustrated.Pay attention to, will be described below user will using operation device 5 The dimming level of light source 4 changes over 50 [%] situation from 100 [%].

Operation device 5 is exported for dimming level to be arranged into 50 [%'s] to the control circuit 22 of sender unit 2 Operation signal.When receiving the operation signal from operation device 5, control circuit 22 selects the second control model, and will behaviour The dimming level for making 50 [%] included in signal is converted into transmitting data (8 bit strings " 01111111 ").Then, control electricity Road 22 controls first switch Q1 and second switch Q2, to send start bit from output unit 21, send transmission data afterwards, and Finally send last bit.That is, sender unit 2 sends transmission signal from output unit 21.

The transmission signal sent from sender unit 2 is received by the receiving circuit 62 of signal receiving device 6.Receive Circuit 62 reads dimming level, and the light modulation that will be read out from the transmission data included in received transmission signal Level conversion is into pwm signal.Then, receiving circuit 62 exports the pwm signal after conversion to the constant-current circuit of lamp device 3 32.According to the pwm signal from receiving circuit 62, the desired value for the electric current I1 for flowing into light source 4 is arranged to by constant-current circuit 32 The value of the half of rated value.Therefore, electric current I1 current value becomes the half of rated value, therefore, the light quantity launched from light source 4 (light beam) become close to dimming level be 100 [%] when while lighting (specified) light beam half.That is, light source 4 is adjusted Save into the light beam of the half of light beam when being specified light.

Sender unit 2, lamp device 3 and signal receiving device 6, which can be included in, forms lighting system 7 (referring to figure 1) in composed component.That is, lighting system 7, which can include sender unit 2, lamp device 3 and signal, receives dress Put 6.

Lamp device 3, light source 4 and signal receiving device 6 are additionally may included in the structure for forming ligthing paraphernalia 8 (referring to Fig. 1) Into in element.That is, ligthing paraphernalia 8 can include lamp device 3, light source 4 and signal receiving device 6.Ligthing paraphernalia 8 It such as can be spotlight as shown in Figure 9.Ligthing paraphernalia 8 can be combined with the lighting tube 300 of ligthing paraphernalia.In Fig. 9 Example in, the quantity for showing a case that ligthing paraphernalia 8 is three.Three ligthing paraphernalias 8 can be with parallel way and signal The output unit 21 of dispensing device 2 electrically connects.Hereinafter, because the 26S Proteasome Structure and Function of these three ligthing paraphernalias 8 is identical, because This illustrates the 26S Proteasome Structure and Function of a ligthing paraphernalia 8 in these three ligthing paraphernalias 8.In addition, describing for convenience, will shine below The lighting tube 300 of funerary objects tool is referred to as " pipe 300 ".

Preferably, pipe 300 is attached to ceiling.Pipe 300 can be electrically connected via the first cable 91 with sender unit 2 Connect.That is, pipe 300 can be configured as via the first cable 91 from the Rreceive output voltage V12 of sender unit 2.The One cable 91 can include a pair of first electric wires.

Ligthing paraphernalia 8 can include body 80, plug 81 and arm 82.Body 80 can include fenestra 80A.Lamp device 3, Light source 4 and signal receiving device 6 can be contained in body 80.Fenestra 80A can be covered by plate 83.

Plug 81 can include a pair of electrodes plate.This can be inserted to battery lead plate via the insertion opening 300A of pipe 300 Into pipe 300, and can be electrically connected with two conductors fixed in pipe 300.The two conductors can be via the first cable 91 electrically connect with sender unit 2.In addition, plug 81 can be via the second cable 92 with being contained in lighting inside body 80 Device 3 and signal receiving device 6 electrically connect.

Preferably, arm 82 supports body 80.Arm 82 can also be supported by plug 81.

Pay attention to, the quantity of ligthing paraphernalia 8 is not limited to three, and can be more than two or four.The quantity of ligthing paraphernalia 8 It can also be one.

As described above, input block 20, output unit 21 and decompression electricity are included according to the sender unit 2 of first aspect Road 10.Input block 20 includes being configured as the first input end 20A and the second input terminal for receiving DC input voltages V11 20B.Output unit 21 includes being configured as the first lead-out terminal 21A and the second lead-out terminal for exporting DC output voltages V12 21B.First lead-out terminal 21A electrically connects with first input end 20A.Reduction voltage circuit 10 is arranged on input block 20 and output is single Between member 21.Reduction voltage circuit 10 is configured as controllably adjusting output voltage V12 by reducing input voltage V11.Decompression electricity Road 10 includes the first capacitor C1 and the second capacitor C2, on-off circuit 24, inductor L1, the first diode (internal body diodes) D1 and the second diode (internal body diodes) D2 and control circuit 22.First capacitor C1 is connected electrically in first input end Between 20A and the second input terminal 20B.Second capacitor C2 is connected electrically in first lead-out terminal 21A and the second lead-out terminal 21B Between.On-off circuit 24 is made up of first switch (switch) Q1 and second switch (switch) Q2 series circuit.On-off circuit 24 Electrically connected with parallel way with the first capacitor C1.Inductor L1 includes the first terminal 11 and Second terminal 12.Inductor L1's The first terminal 11 electrically connects with first switch Q1 and second switch Q2 tie point (the first tie point) P1, and inductor L1 Second terminal 12 electrically connects with the second capacitor C2 and the second lead-out terminal 21B tie point (the second tie point) P2.One or two Pole pipe D1 is electrically connected with parallel way with first switch Q1.First diode D1 also has and first switch Q1 hot side The negative electrode of terminal (drain electrode) electrical connection and the anode electrically connected with the terminal (source electrode) of first switch Q1 low potential side.The Two diode D2 are electrically connected with parallel way with second switch Q2.Second diode D2 also has the high potential with second switch Q2 The negative electrode of terminal (drain electrode) electrical connection of side and the sun electrically connected with the terminal (source electrode) of second switch Q2 low potential side Pole.Control circuit 22 is configured as controlling first switch Q1 and second switch Q2.Control circuit 22 is configured as control first and opened Q1 and second switch Q2 is closed to change output voltage V12 magnitude of voltage, so as to send transmission data from output unit 21.

Compared with the structure of the dimming interface (conventional apparatus) of the LED illumination System described in document 1, according to first aspect Sender unit 2 can send transmission data using simpler structure (circuit structure).Therefore, with conventional apparatus phase Than the quantity of the switch of constituent apparatus can be reduced according to the sender unit 2 of first aspect, and can be reduced and for example be opened The conduction loss of pass.That is, loss can be reduced according to the sender unit 2 of first aspect.From output unit 21 In the case of sending transmission data, also inputted according to the sender unit 2 of first aspect by being reduced via reduction voltage circuit 10 Voltage V11 changes (regulation) output voltage V12.Therefore, can be changed rapidly according to the sender unit 2 of first aspect defeated Go out voltage V12, and supply to the electric power of lamp device 3 and can also be changed rapidly according to output voltage V12 change.As a result, Lamp device 3 can improve the efficiency that generation is used to start the electric power of constant-current circuit 32.

Group with the sender unit 2 according to first aspect can be passed through according to the sender unit 2 of second aspect Close to realize.In the sender unit 2 according to second aspect, reduction voltage circuit 10 is configured as output voltage V12 electricity Pressure value switches between first voltage value v1 and second voltage value v2.First voltage value v1 and input voltage V11 magnitude of voltage phase Together.Second voltage value v2 is the value obtained by reducing input voltage V11.Preferably, control circuit 22 includes the first control Pattern and the second control model are as control model.First control model is the control for forbidding output voltage V12 magnitude of voltage to change Molding formula.Second control model is that the magnitude of voltage for making output voltage V12 changes to send the control of transmission data from output unit 21 Molding formula.Preferably, in the case where control model is the first control model, control circuit 22 is configured as keeping first switch Q1 is off and keeps second switch Q2 in an ON state, to cause output voltage V12 magnitude of voltage to turn into first Magnitude of voltage v1.Preferably, in the case where control model is the second control model, control circuit 22 is additionally configured to control first Q1 and second switch Q2 is switched to cause output voltage V12 magnitude of voltage between first voltage value v1 and second voltage value v2 Switching, to send transmission data from output unit 21.

Compared with the control of conventional apparatus, simpler control can be utilized according to the sender unit 2 of second aspect To send transmission data.

Group with the sender unit 2 according to second aspect can be passed through according to the sender unit 2 of the third aspect Close to realize.In the sender unit 2 according to the third aspect, it is preferable that control model be the second control model and In the case that output voltage V12 magnitude of voltage is switched from first voltage value v1 to second voltage value v2, control circuit 22 by with It is set to and is repeatedly switched in the state of keeping second switch Q2 to be off and disconnects first switch Q1.Alternatively, preferably Ground, control model be the second control model and by output voltage V12 magnitude of voltage from first voltage value v1 to second voltage In the case that value v2 switches, control circuit 22 is configured as keeping first switch Q1 in an ON state and keeps second switch Q2 is off.Moreover it is preferred that it is the second control model and by output voltage V12 magnitude of voltage in control model Keep in the case of being in second voltage value v2, control circuit 22 is configured as keeping what first switch Q1 was off It is repeatedly switched under state and disconnects second switch Q2.Moreover it is preferred that control model be the second control model and will output In the case that voltage V12 magnitude of voltage switches from second voltage value v2 to first voltage value v1, control circuit 22 is configured as First switch Q1 is kept to be repeatedly switched in the state of being off and disconnect second switch Q2.Alternatively, it is preferable that controlling Molding formula is the second control model and switches output voltage V12 magnitude of voltage from second voltage value v2 to first voltage value v1 In the case of, control circuit 22 be configured as keep first switch Q1 be off and keep second switch Q2 be in connect Logical state.

It is defeated to reduce by discharging the electric charge accumulated in the second capacitor C2 according to the sender unit 2 of the third aspect Go out voltage V12 magnitude of voltage, therefore compared with the sender unit of comparative example, can be with the shorter time by output voltage V12 magnitude of voltage switches to second voltage value v2 from first voltage value v1.Therefore, compared with the sender unit of comparative example, The transmission period of transmission data can be reduced according to the sender unit 2 of the third aspect.In addition, keeping second switch Q2 In the case of being repeatedly switched in the state of being off and disconnecting first switch Q1, sent and filled according to the signal of the third aspect The suppression that high current flows through first switch Q1 can be carried out by putting 2, and is also had and can be suppressed overvoltage and apply to first switch Q1 The advantages of.

In addition, in the case where output voltage V12 magnitude of voltage is switched from second voltage value v2 to first voltage value v1, It is repeatedly switched on and disconnects in the state of keeping first switch Q1 to be off according to the sender unit 2 of the third aspect Second switch Q2, therefore high current can be suppressed and flow through second switch Q2.Therefore, according to the sender unit 2 of the third aspect Overvoltage can be suppressed to second switch Q2 to apply, and therefore extend second switch Q2 life-span.In addition, with keeping first to open Close and be repeatedly switched on comparing with the situation for disconnecting second switch Q2 in the state of Q1 is off, keeping at first switch Q1 , can be with the shorter time by output voltage in off-state and in the case of keeping second switch Q2 in an ON state V12 magnitude of voltage switches to first voltage value v1 from second voltage value v2.Therefore, with keeping first switch Q1 to be in disconnection shape It is repeatedly switched on comparing with disconnection second switch Q2 in the state of state, biography can be reduced according to the sender unit 2 of the third aspect The transmission period of transmission of data, and transmission data can be sent with shorter time.

Group with the sender unit 2 according to the third aspect can be passed through according to the sender unit 2 of fourth aspect Close to realize.In the sender unit 2 according to fourth aspect, it is preferable that be off keeping second switch Q2 In the state of be repeatedly switched on and disconnect first switch Q1 in the case of, control circuit 22 is configured as the connection for making first switch Q1 Time and first switch Q1 switching frequency at least one of which change over time.

The fast quick-release for the electric charge that can suppress to be accumulated in the second capacitor C2 according to the sender unit 2 of fourth aspect Put (discharge current from the second capacitor C2 drastically flows).Therefore, in the shape for keeping second switch Q2 to be off In the case of being repeatedly switched under state and disconnecting first switch Q1, turn-on time or switching frequency with no change first switch Q1 Compare, can suppress overvoltage according to the sender unit 2 of fourth aspect applies to first switch Q1.In addition, with changing first Switch Q1 turn-on time or the first switch Q1 situation of switching frequency compared, change first switch Q1 turn-on time and In the case of both first switch Q1 switching frequencies, overvoltage can be suppressed and applied to first switch Q1.

Group with the sender unit 2 according to fourth aspect can be passed through according to the sender unit 2 of the 5th aspect Close to realize.In the sender unit 2 according to the 5th aspect, it is preferable that by output voltage V12 magnitude of voltage from first In the case that magnitude of voltage v1 switches to second voltage value v2, control circuit 22 is configured as with output voltage V12 magnitude of voltage Close to second voltage value v2 increase first switches Q1 turn-on time.

The fast quick-release for the electric charge accumulated in the second capacitor C2 can be suppressed according to the sender unit 2 of the 5th aspect Put (discharge current from the second capacitor C2 drastically flows).Therefore, in the shape for keeping second switch Q2 to be off In the case of being repeatedly switched under state and disconnecting first switch Q1, the situation phase with no change first switch Q1 turn-on time Than that can suppress overvoltage according to the sender unit 2 of the 5th aspect and apply to first switch Q1.

Group with the sender unit 2 according to fourth aspect can be passed through according to the sender unit 2 of the 6th aspect Close to realize.In the sender unit 2 according to the 6th aspect, by output voltage V12 magnitude of voltage from first voltage value In the case that v1 switches to second voltage value v2, control circuit 22 is configured as magnitude of voltage with output voltage V12 close to the Two magnitude of voltage v2 reduce first switch Q1 switching frequency.

The fast quick-release for the electric charge accumulated in the second capacitor C2 can be suppressed according to the sender unit 2 of the 6th aspect Put (discharge current from the second capacitor C2 drastically flows).Therefore, in the shape for keeping second switch Q2 to be off In the case of being repeatedly switched under state and disconnecting first switch Q1, the situation phase with no change first switch Q1 switching frequency Than that can suppress overvoltage according to the sender unit 2 of the 6th aspect and apply to first switch Q1.

According to the sender unit 2 of the 7th aspect can by with according to either side in the aspect of the third aspect~6th The combination of described sender unit 2 is realized.In the sender unit 2 according to the 7th aspect, it is preferable that the One switch Q1 is kept in the case of being repeatedly switched in the state of being off and disconnect second switch Q2, the quilt of control circuit 22 The switching frequency at least one of which for being configured to the turn-on time and second switch Q2 for making second switch Q2 changes over time.

In the case where being repeatedly switched in the state of keeping first switch Q1 to be off and disconnecting second switch Q2, Compared with no change second switch Q2 turn-on time or the situation of switching frequency, according to the sender unit of the 7th aspect 2 can suppress overvoltage applies to second switch Q2.In addition, with changing second switch Q2 turn-on time or cutting for second switch Q2 The situation for changing frequency is compared, in the situation of both the turn-on time for changing second switch Q2 and second switch Q2 switching frequency Under, overvoltage can be suppressed and applied to second switch Q2.

Group with the sender unit 2 according to the 7th aspect can be passed through according to the sender unit 2 of eighth aspect Close to realize.In the sender unit 2 according to eighth aspect, it is preferable that by output voltage V12 magnitude of voltage from second In the case that magnitude of voltage v2 switches to first voltage value v1, control circuit 22 is configured as with output voltage V12 magnitude of voltage Close to first voltage value v1 increase second switches Q2 turn-on time.

In the case where being repeatedly switched in the state of keeping first switch Q1 to be off and disconnecting second switch Q2, Compared with the situation of no change second switch Q2 turn-on time, it can be suppressed according to the sender unit 2 of eighth aspect Overvoltage applies to second switch Q2.

Group with the sender unit 2 according to the 7th aspect can be passed through according to the sender unit 2 of the 9th aspect Close to realize.In the sender unit 2 according to the 9th aspect, it is preferable that by output voltage V12 magnitude of voltage from second In the case that magnitude of voltage v2 switches to first voltage value v1, control circuit 22 is configured as with output voltage V12 magnitude of voltage Second switch Q2 switching frequency is reduced close to first voltage value v1.

In the case where being repeatedly switched in the state of keeping first switch Q1 to be off and disconnecting second switch Q2, Compared with the situation of no change second switch Q2 switching frequency, it can be suppressed according to the sender unit 2 of the 9th aspect Overvoltage applies to second switch Q2.

According to the sender unit 2 of the tenth aspect can by with according to either side in the aspect of second aspect~9th The combination of sender unit 2 realize.In the sender unit 2 according to the tenth aspect, it is preferable that control circuit 22 The 3rd control model for also including stopping the output of reduction voltage circuit 10 is as control model.Preferably, it is in control model In the case of three control models, control circuit 22 is configured as at least keeping second switch Q2 to be off.

For example, in the case of exception occurs in sender unit 2, can according to the sender unit 2 of the tenth aspect To stop the power supply via first switch Q1 and second switch Q2 to lamp device 3.

According to the sender unit 2 of the tenth one side can by with according to either one in the aspect of second aspect~tenth The combination of the sender unit 2 in face is realized.In the sender unit 2 according to the tenth one side, it is preferable that control electricity Road 22 also includes making output voltage V12 magnitude of voltage change over less than second voltage value v2 and is higher than 0 [V] third voltage value V3 and output voltage V12 the 4th control model is exported as control model from output unit 21.

For example, during light source 4 disconnects, signal can be supplied according to the sender unit 2 of the tenth one side and receive dress Put the D/C voltage needed for 6.

According to the 12nd aspect sender unit 2 can by with the sender unit 2 according to the tenth one side Combination realize.According to the 12nd aspect sender unit 2 in, it is preferable that control model be the 4th control mould In the case of formula, control circuit 22 is configured as making output voltage V12 magnitude of voltage keeping holding in third voltage value v3 Continuous time T5 is longer.And specifically, it is preferable to ground, control circuit 22 is configured as making to keep being in by output voltage V12 magnitude of voltage Third voltage value v3 time is than adjusting output voltage V12 magnitude of voltage to second voltage value v2's in the second control model Time, (time width T4) was longer.

According to the sender unit 2 of the 12nd aspect signal receiving device 6 can be prevented third voltage value v3 flase drops Survey as second voltage value v2.

Can be by according to the signal with the tenth one side or 12 aspects according to the sender unit 2 of the 13rd aspect The combination of dispensing device 2 is realized.In the sender unit 2 according to the 13rd aspect, it is preferable that third voltage value v3 is By Rreceive output voltage V12 come the magnitude of voltage needed for the circuit (receiving circuit 62 of signal receiving device 6) that is acted with On magnitude of voltage.

Such as during light source 4 disconnects, signal receiving device 6 can be made according to the sender unit 2 of the 13rd aspect Receiving circuit 62 acted.

According to the sender unit 2 of fourteenth aspect can by with according to the tenth one side to 13 aspect in it is any The combination of the sender unit 2 of aspect is realized.In the sender unit 2 according to fourteenth aspect, it is preferable that inciting somebody to action In the case that control model changes from the first control model or the second control model to the 4th control model, control circuit 22 by with It is set to and is repeatedly switched in the state of keeping second switch Q2 to be off and disconnects first switch Q1.Alternatively, preferably Ground, in the case where control model is from the first control model or the second control model to the transformation of the 4th control model, control circuit 22 are configured as being repeatedly switched in the state of keeping first switch Q1 to be off and disconnecting second switch Q2.

Can be by output voltage V12 magnitude of voltage from first voltage value v1 according to the sender unit 2 of fourteenth aspect Gradually change (reduction) to third voltage value v3.

As described above, connecting portion 60 and receiving circuit 62 are included according to the signal receiving device 6 of the 15th aspect.Connecting portion 60 are configured as with being electrically connected according to the output unit 21 of the sender unit 2 of either side in first aspect~fourteenth aspect Connect.Receiving circuit 62 is configured as change of the detection input to the output voltage V12 of connecting portion 60 magnitude of voltage, to be transmitted Data.

The transmission data to be sent from sender unit 2 can be received according to the signal receiving device 6 of the 15th aspect.

As described above, included according to the lighting system 7 of the 16th aspect according to any in first aspect~fourteenth aspect The sender unit 2 of aspect, signal receiving device 6 and lamp device 3 according to the 15th aspect.Signal receiving device 6 Including connecting portion 60 and receiving circuit 62.The electrical connection of connecting portion 60 and the output unit 21 of sender unit 2.Receiving circuit 62 are configured as change of the detection input to the output voltage V12 of connecting portion 60 magnitude of voltage, to obtain transmission data.Light dress 3 are put to be configured to, with carrying out some bright light sources 4 from the output voltage V12 that output unit 21 exports.Lamp device 3 is additionally configured to base Change the output to light source 4 in the transmission data that the receiving circuit 62 of signal receiving device 6 is obtained.

Lighting system 7 including that can drop low-loss sender unit 2 can be by lighting according to the 16th aspect System 7 is formed.

As described above, according to the 17th aspect ligthing paraphernalia 8 include according to the 15th aspect signal receiving device 6, Light source 4 and lamp device 3.Lamp device 3 is configured to, with the either side from according to first aspect~fourteenth aspect The output voltage V12 that the output unit 21 of sender unit 2 exports carrys out some bright light sources 4.Lamp device 3 is additionally configured to be based on The transmission data that are obtained by the receiving circuit 62 of signal receiving device 6 change the output to light source 4.

Including the ligthing paraphernalia 8 for the signal receiving device 6 that can receive the transmission data to be sent from sender unit 2 It can be made up of the ligthing paraphernalia 8 according to the 17th aspect.

As described above, lighting system 7, the light according to the 16th aspect are included according to the illuminator 100 of the 18th aspect Source 4, DC power source apparatus 1 and operation device 5.Light source 4 is configured as lighting by the lamp device 3 of lighting system 7.D/C power The input block 20 that device 1 is configured as the sender unit 2 to lighting system 7 applies input voltage V11.Operation device 5 It is configured as receiving operation input, and operation signal is exported to sender unit 2.Sender unit 2 is configured as base Transmission data are sent in operation signal.

Illuminator 100 including that can drop low-loss sender unit 2 can be by the photograph according to the 18th aspect Bright system 100 is formed.Pay attention to, DC power source apparatus 1 and operation device 5 are not the necessary composed components of illuminator 100, and can Suitably to omit.

Include the letter according to either side in first aspect~fourteenth aspect according to the illuminator 100 of the 19th aspect Number dispensing device 2, ligthing paraphernalia 8, DC power source apparatus 1 and operation device 5.Ligthing paraphernalia 8 includes with connecting portion 60 and received The signal receiving device 6 of circuit 62.The electrical connection of connecting portion 60 and the output unit 21 of sender unit 2.Receiving circuit 62 Change of the detection input to the output voltage V12 of connecting portion 60 magnitude of voltage is configured as, to obtain transmission data.D/C power fills Put 1 input block 20 for being configured as the sender unit 2 to lighting system 7 and apply input voltage V11.The quilt of operation device 5 It is configured to receive operation input, and operation signal is exported to sender unit 2.Sender unit 2 is configured as being based on Operation signal sends transmission data.

Illuminator 100 including that can drop low-loss sender unit 2 can be by the photograph according to the 19th aspect Bright system 100 is formed.Paying attention to, DC power source apparatus 1 and operation device 5 are not the necessary composed components of illuminator 100, and Can suitably it omit.

Pay attention to, in sender unit 2, first input end 20A is the input terminal of hot side, and second defeated Enter the input terminal that terminal 20B is low potential side, but the structure not limited to this.First input end 20A can be low potential The input terminal of side, and the second input terminal 20B can be the input terminals of hot side.In this case, first switch Q1 source electrode can electrically connect with first input end 20A, and first switch Q1 drain electrode electrically connects with second switch Q2 source electrode, And second switch Q2 drain electrode electrically connects with the second input terminal 20B.

Transmission data are not limited to the dimming level of light source 4, and can be colour temperature (the regulation light for example for changing light source 4 The color in source 4) toning it is horizontal.In addition, transmission data are not limited to the dimming level of light source 4, and it can be the light modulation water of light source 4 Gentle toning is horizontal.In addition, transmission data are not limited to the dimming level of light source 4, and for example it is incorporated in loudspeaker in ligthing paraphernalia 8 In the case of can be voice data (music data).That is, sender unit 2 sends voice data as transmission number According to, and the transmission data that can be obtained based on the receiving circuit 62 of signal receiving device 6 drive raising one's voice for ligthing paraphernalia 8 Device, to export audio (music).

Second switch Q2 is not limited to MOSFET, and for example can be insulated gate bipolar transistor.In addition, first switch Q1 It is same type of switch with second switch Q2, and can is different types of switch.

DC power source apparatus 1 includes being used for the function by AC voltage conversions into input voltage V11, but can include being used to give birth to Into input voltage V11 function.In addition, DC power source apparatus 1 can include being used for the D/C voltage that will be exported from solar cell array It is converted into input voltage V11 function.

Lamp device 3 includes constant-current circuit 32, but not limited to this, and can be for example including constant voltage circuit.Constant-current circuit 32 are not limited to step-down switching converter, and for example can be boosted switch converter or step-up/down dc-dc converter.

The connection of multiple solid-state light emitting elements 40 is not limited to be connected in series, and for example can be to be connected in parallel or will connect Connect and be connected in parallel the connection being combined.In addition, multiple solid-state light emitting elements 40 are each not limited to LED, and can have Machine EL (electroluminescent) element.In addition, the quantity of solid-state light emitting element 40 is not limited to two or more, and it can be one.

Operation device 5 is not limited to light modulator, and can be via the wireless communication medium of infrared or electric wave etc. come to Control circuit 22 sends the tablet terminal or remote controllers of operation signal.In this case, sender unit 2 needs to be used for Receive the receiving unit of operation signal.

The dimming level of light source 4 is converted into pwm signal by receiving circuit 62, but the structure not limited to this.Receiving circuit 62 can be converted into the dimming level of light source 4 to specify the voltage signal of dimming level by the magnitude of voltage of D/C voltage.

Ligthing paraphernalia 8 is not limited to spotlight, and for example can be Down lamp.

In illuminator 100, DC power source apparatus 1 and sender unit 2 are configured as the unit of separation, but can be What integration was formed.

Claims

1. a kind of sender unit, including：

Input block, it includes being configured as the first input end and the second input terminal for receiving DC input voltages；

Output unit, it includes being configured as the first lead-out terminal and the second lead-out terminal for exporting DC output voltages, wherein institute First lead-out terminal is stated to electrically connect with the first input end；And

Reduction voltage circuit, it is arranged between the input block and the output unit, and is configured as by described in reduction Input voltage controllably adjusts the output voltage,

Wherein, the reduction voltage circuit includes：

First capacitor, it is connected electrically between the first input end and second input terminal；

Second capacitor, it is connected electrically between the first lead-out terminal and second lead-out terminal；

On-off circuit, it includes the series circuit of first switch and second switch, and with parallel way and first electric capacity Device electrically connects；

Inductor, it includes the first terminal, the Yi Jiyu electrically connected with the tie point of the first switch and the second switch The Second terminal of the tie point of second capacitor and second lead-out terminal electrical connection；

First diode, it is electrically connected with parallel way with the first switch, and is had with the first switch described The hot side of first switch terminal electrical connection negative electrode and with the first switch the first switch low potential The anode of the terminal electrical connection of side；

Second diode, it is electrically connected with parallel way with the second switch, and is had with the second switch described The hot side of second switch terminal electrical connection negative electrode and with the second switch the second switch low potential The anode of the terminal electrical connection of side；And

Control circuit, it is configured as controlling the first switch and the second switch, wherein, the control circuit is configured It is to control the first switch and the second switch to change the magnitude of voltage of the output voltage, so as to from the output unit Send transmission data.

2. sender unit according to claim 1, wherein,

The reduction voltage circuit is configured as the magnitude of voltage of the output voltage in the magnitude of voltage identical with the input voltage Switched between first voltage value and the second voltage value obtained by reducing the input voltage,

The control circuit includes the first control model and the second control model and is used as to be used to controlling the first switch and described The control model of second switch, wherein, in first control model, forbid the magnitude of voltage of the output voltage to change, with And in second control model, change the magnitude of voltage of the output voltage, to send the biography from the output unit Transmission of data,

In the case where the control model is first control model, the control circuit is configured as keeping described first Switch be off and keep the second switch in an ON state with cause the magnitude of voltage of the output voltage into For the first voltage value, and

In the case where the control model is second control model, the control circuit is configured as controlling described first Switch with the second switch to cause the magnitude of voltage of the output voltage in the first voltage value and the second voltage Switch between value, so as to send the transmission data from the output unit.

3. sender unit according to claim 2, wherein,

The control model be second control model and by the magnitude of voltage of the output voltage from the first voltage It is worth in the case of switching to the second voltage value, the control circuit is configured as keeping the second switch to be in disconnection It is repeatedly switched in the state of state and disconnects the first switch or keep the first switch in an ON state and protect The second switch is held to be off,

It is second control model in the control model and keeps the magnitude of voltage of the output voltage to be in described the In the case of two magnitudes of voltage, the control circuit is configured as the weight in the state of keeping the first switch to be off The second switch is switched on and off again, and

The control model be second control model and by the magnitude of voltage of the output voltage from the second voltage It is worth in the case of switching to the first voltage value, the control circuit is configured as keeping the first switch to be in disconnection It is repeatedly switched in the state of state and disconnects the second switch, or keeps the first switch to be off and protect Hold the second switch in an ON state.

4. sender unit according to claim 3, wherein,

In the case where being repeatedly switched in the state of keeping the second switch to be off and disconnecting the first switch, The control circuit is configured as the switching frequency for the turn-on time and first switch for making the first switch wherein at least One of change over time.

5. sender unit according to claim 4, wherein,

It is described in the case where the magnitude of voltage of the output voltage is switched from the first voltage value to the second voltage value Control circuit is configured as increasing the first switch close to the second voltage value with the magnitude of voltage of the output voltage Turn-on time.

6. sender unit according to claim 4, wherein,

It is described in the case where the magnitude of voltage of the output voltage is switched from the first voltage value to the second voltage value Control circuit is configured as reducing the first switch close to the second voltage value with the magnitude of voltage of the output voltage Switching frequency.

7. the sender unit according to any one of claim 3 to 6, wherein,

In the case where being repeatedly switched in the state of keeping the first switch to be off and disconnecting the second switch, The control circuit is configured as the switching frequency for the turn-on time and second switch for making the second switch wherein at least One of change over time.

8. sender unit according to claim 7, wherein,

It is described in the case where the magnitude of voltage of the output voltage is switched from the second voltage value to the first voltage value Control circuit is configured as increasing the second switch close to the first voltage value with the magnitude of voltage of the output voltage Turn-on time.

9. sender unit according to claim 7, wherein,

It is described in the case where the magnitude of voltage of the output voltage is switched from the second voltage value to the first voltage value Control circuit is configured as reducing the second switch close to the first voltage value with the magnitude of voltage of the output voltage Switching frequency.

10. the sender unit according to any one of claim 2 to 6, wherein,

The control circuit also includes the 3rd control model as the control model, wherein in the 3rd control model, Stop the output of the reduction voltage circuit, and

In the case where the control model is the 3rd control model, the control circuit is configured as described at least holding Second switch is off.

11. the sender unit according to any one of claim 2 to 6, wherein,

The control circuit also includes the 4th control model as control model, wherein in the 4th control model, by institute The magnitude of voltage for stating output voltage changes over third voltage value less than the second voltage value and higher than 0V, and from the output Unit exports the output voltage.

12. sender unit according to claim 11, wherein,

In the case where the control model is the 4th control model, the control circuit is configured as making holding described defeated The magnitude of voltage for going out voltage is in the time ratio of the third voltage value and keeps the output voltage in second control model Magnitude of voltage be in the second voltage value time it is longer.

13. sender unit according to claim 11, wherein,

The third voltage value is by receiving the output voltage come the electricity more than magnitude of voltage needed for the circuit that is acted Pressure value.

14. sender unit according to claim 11, wherein,

The control model is being turned from first control model or second control model to the 4th control model In the case of change, the control circuit is configured as being repeatedly switched in the state of keeping the second switch to be off With disconnect the first switch or be repeatedly switched in the state of keeping the first switch to be off and disconnect institute State second switch.

15. a kind of signal receiving device, including：

Connecting portion, it is configured as the output list with sender unit according to any one of claim 1 to 6 Member electrical connection；And

Receiving circuit, it is configured as change of the detection input to the magnitude of voltage of the output voltage of the connecting portion, to obtain Obtain the transmission data.

16. a kind of lighting system, including：

Sender unit according to any one of claim 1 to 6；

Signal receiving device, it includes：Connecting portion, it is electrically connected with the output unit of the sender unit, and Receiving circuit, it is described to obtain to the change of the magnitude of voltage of the output voltage of the connecting portion that it is configured as detection input Transmit data；And

Lamp device, it is configured as by the output voltage exported from the output unit come some bright light sources,

Wherein, the lamp device is configured as the biography that the receiving circuit based on the signal receiving device is obtained Transmission of data changes the output to the light source.

17. a kind of ligthing paraphernalia, including：

Signal receiving device according to claim 15；

Light source；And

Lamp device, it is configured to, with the output voltage from the output unit output of the sender unit To light the light source,

18. a kind of illuminator, including：

Lighting system according to claim 16；

The light source, it is configured as lighting by the lamp device of the lighting system；

DC power source apparatus, it is configured as the input block of the sender unit into the lighting system and applied The input voltage；And

Operation device, it is configured as receiving operation input, and exports operation signal to the sender unit,

Wherein, the sender unit is configured as sending the transmission data based on the operation signal.

19. a kind of illuminator, including：

Sender unit according to any one of claim 1 to 6；

Ligthing paraphernalia, it includes signal receiving device, and the signal receiving device includes：Connecting portion, it sends with the signal The output unit electrical connection of device, and receiving circuit, it is described defeated to the connecting portion that it is configured as detection input Go out the change of the magnitude of voltage of voltage to obtain the transmission data；

DC power source apparatus, it is configured as applying the input voltage to the input block of the sender unit；With And