CN203313483U - LED lighting device - Google Patents

Abstract

The utility model provides an LED lighting device which can inhibit the structure complexity and the increase of production cost, and has functions of a security lamp. The LED lighting device (1) can switch and control the lighting of illumination light and security light, and comprises a plurality of LEDs (3); a lighting circuit (5) for supplying an output current (I[out]) to the plurality of LEDs (3) so as to light and drive the plurality of LEDs (3); and a control part (11b) for controlling the lighting circuit (5). The control part (11b) controls the lighting circuit (5) in a manner that when the illumination light is lighted, the output current (I[out]) is controlled to be within a first current range, and the illumination light is emitted by the plurality of LEDs (3); and when the security light is lighted, the output current (I[out]) is controlled to be within a second current range below the lower limit current of the first current range, and PWM control is carried out to enable the security light to be emitted by the plurality of LEDs (3).

Description

The LED lighting device

Technical field

The utility model relates to a kind of LED lighting device and lighting control method thereof thereof with function of lighting security personnel's light.

Background technology

In recent years, replace the light sources such as incandescent lamp or fluorescent lamp, universal a kind of LED(light-emitting diode that will have the characteristics such as the low and long service life of power consumption) lighting device that uses with illuminating part as illumination.In this lighting device, have for example, in order during at illuminating lamps such as nights, extinguishing, to guarantee as institute's light requirement of Lamp through all night and to possess security lamp (also referred to as Lamp through all night) function (, disclosing correlation technique in patent documentation 1).

The lighting device of patent documentation 1 possesses: light source portion, and it has a plurality of LED; The first lamp circuit, it is for to described light source portion (that is, described a plurality of LED) supply capability; The second point circuit for lamp, it is for a LED supply capability to described light source portion; Switching part, it is be used to switching to described the first lamp circuit or described second point circuit for lamp.Described the first lamp circuit possesses: the first power supply unit, and it is for to described light source portion (that is, a plurality of LED) supply capability; First opens and closes element, and it opens and closes for the power supply circuits between described the first power supply unit and described light source portion.In addition, described second point circuit for lamp possesses: second source section, and it is for a LED supply capability to described light source portion; Second opens and closes element, and it opens and closes for the power supply circuits between described second source section and a described LED.

According to this structure, if utilize described switching part to switch to described the first lamp circuit, all described a plurality of LED are luminous, thereby light illumination light, on the other hand, if utilize described switching part to switch to described second point circuit for lamp, only have a described LED luminous, thereby light security lamp.

The prior art document:

Patent documentation

Patent documentation 1: JP 2011-222123 communique

The utility model content

The problem that utility model will solve

But, in the lighting device of patent documentation 1, due to a LED who only lights as security lamp in a plurality of LED, therefore except the first lamp circuit for to all a plurality of LED supply capabilities, also need further to possess: for a second point circuit for lamp (that is, the lamp circuit of security lamp special use) to a described LED supply capability; For switching to the switching part of the first lamp circuit or second point circuit for lamp, thereby cause the problem of the complicated and manufacturing cost increase of structure.

Therefore, the utility model is to propose in view of the above problems, and its purpose is, a kind of increase that can suppress the complicated and manufacturing cost of structure is provided, and can play LED lighting device and the lighting control method thereof thereof of security lamp function.

Solve the method for problem

The exemplary LED lighting device of the utility model is used for lighting a lamp of switching controls illumination light and security personnel's light, and described lighting device possesses: a plurality of the first illuminating parts; The first lamp circuit, it is lit a lamp and drives described a plurality of the first illuminating parts for to described a plurality of the first illuminating parts, supplying with output current; Control part, it is be used to controlling described the first lamp circuit.Wherein, described control part is controlled the first lamp circuit as follows: when lighting described illumination light, described output current is controlled to the electric current in the first current range and described illumination light is sent from described a plurality of the first illuminating parts, when lighting the described security personnel light time, described output current is controlled to electric current in the second current range below the lower bound current value of described the first current range, thereby lights all described the first illuminating parts.

According to said structure, when lighting illumination light, the first lamp circuit makes illumination light be controlled from the mode that a plurality of the first illuminating parts send so that output current is controlled to the electric current in the first current range, when lighting security personnel's light time, output current is controlled to electric current below the first current range lower bound current value, in the second current range, thereby lights all the first illuminating parts.That is, all illumination light all are used as security personnel's light illuminating part with the first illuminating part.Therefore, illumination light can be doubled as to security personnel's light lamp circuit with the first lamp circuit, due to without the special-purpose lamp circuit of security personnel's light being set separately and be used to switching the switching part of illumination light with the first lamp circuit and security personnel's light special use lamp circuit, therefore can prevent the increase of the complicated and manufacturing cost of structure, and play the function of security lamp.In addition, above-mentioned action effect is an example.

LED lighting device of the present utility model be take said structure and is basic structure, for example can adopt following variety of way.In addition, the action effect corresponding with each mode is an example.

Namely, in the exemplary LED lighting device of the utility model, preferably, described each first illuminating part can be launched respectively the first photochromic light, described LED lighting device further possesses: a plurality of the second illuminating parts, and it can be launched and the described first photochromic different second photochromic light; The second point circuit for lamp, it is lit a lamp and drives described a plurality of the second illuminating parts for to described a plurality of the second illuminating parts, supplying with output current, and wherein, described the second illuminating part can be lighted illumination light.

According to said structure, owing to further possessing: the second illuminating part, it can launch different from the first illuminating part photochromic and can light illumination light; The second point circuit for lamp, it is for driving that the second illuminating part is lit a lamp, and therefore can combine the second photochromic light of the first photochromic light of the first illuminating part emission and the emission of the second illuminating part and forms illumination light, thereby can light the photochromic illumination light of capable of regulating.

In addition, in the exemplary LED lighting device of the utility model, preferably, described control part makes described security personnel's light from the mode that described a plurality of the first illuminating parts send by pulse width modulation, to control, and controls described the first lamp circuit.

According to said structure, owing to by pulse width modulation, to control the light that makes to ensure public security, controlling the first lamp circuit from the mode that a plurality of the first illuminating parts send, therefore can control accurately and send security personnel's light (that is, the little light of brightness).

In addition, the lighting control method thereof of the LED lighting device that the utility model is exemplary, wherein the LED lighting device possesses a plurality of illuminating parts, the lighting control method thereof of described LED lighting device has: the illumination light pattern, make the described a plurality of illuminating parts of current direction in the first current range, thereby light all described illuminating parts; Security personnel's optical mode, make the following interior described a plurality of illuminating parts of current direction of the second current range of lower bound current value of described the first current range, thereby light all described illuminating parts.

According to said structure, owing to having a plurality of illuminating parts of the current direction made in the first current range, light the illumination light pattern of all illuminating parts and make a plurality of illuminating parts of current direction in the second current range below the first current range lower bound current value light security personnel's optical mode of all illuminating parts, so all illuminations can be used as to security personnel's light illuminating part with illuminating part.Therefore, illumination can be doubled as to security personnel's light lamp circuit with lamp circuit, owing to without arranging separately, ensuring public security light special use lamp circuit and using the switching part of lamp circuit and security personnel's light special use lamp circuit be used to switching to throw light on, therefore can prevent the increase of the complicated and manufacturing cost of structure, play the function of security lamp.In addition, above-mentioned action effect is an example.

In addition, the lighting control method thereof of the LED lighting device that the utility model is exemplary, wherein said LED lighting device possesses: can launch a plurality of first illuminating parts of the first photochromic light, can launch a plurality of second illuminating parts of the light photochromic from described first photochromic different second.The lighting control method thereof of described LED lighting device has illumination light pattern and security personnel's optical mode.In the illumination light pattern, carry out at least in following supply: by the supply of the electric current in the first current range to described a plurality of the first illuminating parts, by the supply of the electric current in the 3rd current range to described a plurality of the second illuminating parts; Thereby light, supply with all illuminating parts that electric current is arranged; In security personnel's optical mode, make described a plurality of the first illuminating parts of current direction in the second current range, thereby light all described the first illuminating parts, described the second current range is below the lower bound current value of described the first current range and below the lower bound current value of described the 3rd current range.

According to said structure, owing to having illumination light pattern and security personnel's optical mode, therefore all illuminations can be used as to security personnel's light illuminating part with illuminating part, wherein the illumination light pattern is carried out in following supply at least: the electric current in the first current range is supplied with to a plurality of the first illuminating parts, the electric current in the 3rd current range is supplied with to a plurality of the second illuminating parts; Thereby light the illuminating part that all supplies have electric current.In security personnel's optical mode, make a plurality of the first illuminating parts of current direction in the second current range, thereby light all the first illuminating parts, to light a lamp, this second current range is below the lower bound current value of the first current range and below the lower bound current value of the 3rd current range.Therefore, illumination can be doubled as to security personnel's light lamp circuit with lamp circuit, owing to without arranging separately, ensuring public security light special use lamp circuit and using the switching part of lamp circuit and security personnel's light special use lamp circuit be used to switching to throw light on, therefore the increase of the complicated and manufacturing cost of structure can be prevented, thereby the function of security lamp can be played.In addition, above-mentioned action effect is an example.

The lighting control method thereof of LED lighting device of the present utility model, on the basis of said structure, for example can adopt following variety of way.In addition, the action effect corresponding with each mode is an example.

That is, in the lighting control method thereof of the exemplary LED lighting device of the utility model, preferably, under described security personnel's optical mode, the electric current that flows to described illuminating part is to have carried out the electric current of extra pulse width modulated.

According to said structure, under security personnel's optical mode, because the electric current that flows to illuminating part is to have carried out the electric current of extra pulse width modulated, therefore can control accurately and send security personnel's light (that is, the little light of brightness).

In addition, in the lighting control method thereof of the exemplary LED lighting device of the utility model, preferably, under described security personnel's optical mode, the electric current that flows to described the first illuminating part is to have carried out the electric current of extra pulse width modulated.

According to said structure, under security personnel's optical mode, because the electric current that flows to the first illuminating part is to have carried out the electric current of extra pulse width modulated, therefore can control accurately and send security personnel's light (that is, the little light of brightness).

The effect of utility model

According to LED lighting device of the present utility model and lighting control method thereof thereof, can suppress the increase of the complicated and manufacturing cost of structure and also can play the security lamp function.

The accompanying drawing explanation

Fig. 1 is the structural representation of the LED lighting device of the utility model the first embodiment.

Fig. 2 is the flow chart of the work of explanation the utility model the first embodiment LED lighting device.

Fig. 3 is the structural representation of the LED lighting device of the utility model the second embodiment.

Fig. 4 is the flow chart of the work of explanation the utility model the second embodiment LED lighting device.

Description of reference numerals

1,1B lighting device

3 LED(the first illuminating parts, illuminating part)

3B LED(the second illuminating part)

5 lamp circuits (the first lamp circuit)

5B lamp circuit (second point circuit for lamp)

11b, 11bB control part (control part)

The Iout1 output current

Embodiment

Below, with reference to accompanying drawing, describe embodiment of the present utility model in detail.

(the first embodiment)

(structure explanation)

Fig. 1 is the structural representation of the LED lighting device of the utility model the first embodiment.In addition, in the following description, sometimes " LED lighting device " is called to " lighting device ".In addition, the utility model and relevant embodiment of the present utility model are illustrated the lighting device that possesses LED, but also go for possessing OLED(Organic LED) Organic Light Emitting Diode) lighting device.

The lighting device 1 of the present embodiment be a kind of to illumination light and security personnel lighting a lamp of light carry out the lighting device of switching controls, owing to using all a plurality of illuminating LEDs 3 as security personnel's light illuminating part, can with lamp circuit 5 dual-purposes, be therefore security personnel's light lamp circuit by illumination.Herein, " illumination light " refers to the light with following light quantity, and this light quantity can on purpose illuminate the space that is provided with lighting device 1." security personnel's light " refers at night that illumination light is extinguished be used to guaranteeing the light as institute's light requirement of Lamp through all night.In addition, the state of lighting device 1 being lighted to illumination light is called " illumination light pattern ", and the state of lighting device being lighted to security personnel's light is called " security personnel's optical mode ".Below, according to Fig. 1, describe lighting device 1 in detail.

Lighting device 1 possesses: as the power supply B of DC power supply; A plurality of LED3(the first illuminating parts, illuminating part); Lamp circuit (the first lamp circuit) 5, it uses power supply B to export (supply) electric current and a plurality of LED3 of driving that light a lamp to a plurality of LED3; Power supply circuits 7, it is for the output current Iout1 to a plurality of LED3 feed point circuit for lamp 5; Input device 9, it is be used to inputting the operation of illumination apparatus 1; Control device 11, its control point of input operation according to input device 9 circuit for lamp 5.

Herein, while lighting illumination light, the output current Iout1 of control point circuit for lamp 5 in the first current range (for example, 400-20(mA)) in (rated current scope), light security personnel's light time, the output current Iout1 of control point circuit for lamp 5 for example, below the lower bound current value of described the first current range or be less than in second current range (, 2-0.2(mA)) of described the first current range lower bound current value.In addition, for example by the luminous flux scope control of illumination light at 4000-200(lm) in, the luminous flux scope control of the light of for example ensuring public security is at 20-2(lm) in.

For example, each LED3 is respectively for example, by the correlated colour temperature that can launch identical photochromic (, 2700K(Kelvin) warm colour system) light-emitting diode of light (below, be called LED) form.In addition, the light of LED3 emission is not limited to warm colour system, can be also that cool colour is (for example, 6500K).LED3 mutual forward in power supply circuits 7 is connected in series.Herein, each LED3 is connected in power supply circuits 7 in the mode mutually be connected in series, but also mutually the mode that is connected in parallel of forward be connected in power supply circuits 7, or also can combined serial connect and the mode that is connected in parallel is connected in power supply circuits 7.

Lamp circuit 5 possesses: switching power circuit (power circuit) 51, and it can control the current value of output current Iout1; Constant-current circuit 52, the output current Iout1 of its control switch power circuit 51 becomes required current value.

Switching power circuit 51 possesses: switch element Q11; Transformer (for example, the high-frequency transformer) T1, its duty ratio according to switch element Q11 is carried out transformation output to voltage VB; Diode D1 and capacitor C 1, it is level and smooth that it carries out rectification for the output current to transformer T1; Photo detector PC11, it is for receiving the control signal (being light signal) from constant-current circuit 52 herein; Control part IC11, it carries out break-make control according to the control signal that photo detector PC11 receives to switch element Q11.

Output voltage and output current by diode D1 and the level and smooth transformer T1 of capacitor C1 rectification, become respectively switching power circuit 51(namely, lamp circuit 5) output voltage V out1 and output current Iout1.

Transformer T1 possesses: the iron core of ring-type (omitting diagram); Be wound on first siding ring n1 and the second siding ring n2 of described iron core.The end of first siding ring n1 is connected with the positive pole of power supply B via the first power line P1, and the other end of first siding ring n1 is connected with the negative pole of power supply B with the first datum line N1 via switch element Q11.The end of second siding ring n1 is connected with second source line P2 via diode D1, and the other end of second siding ring n2 is connected with the second datum line N2.

In addition, second source line P2 and the second datum line N2 interconnect via distribution H1 and resistance R 12, on distribution H1, are connected with a plurality of LED3.In addition, power supply circuits 7 consist of second source line P2, the second datum line N2 and distribution H.

Diode D1 forward is connected in second source line P2.In negative electrode (cathode) side of diode D1, capacitor C 1 is connected with the second datum line N2 with second source line P2.

For example, switch element Q11 is by N-channel MOS FET(Metal-oxide-semicondutor field-effect transistor) form.For example, at the distribution (, the first datum line N1) that connects power supply B and first siding ring n1 upper, switch element Q11 installs connection as follows: the drain electrode of switch element Q11 is connected with first siding ring n1, and the source electrode of switch element Q11 is connected with the negative pole of power supply B.The grid of switch element Q11 is connected with control part IC11.

For example, photo detector PC11 consists of photistor.The collector electrode of photo detector PC11 is connected with control part IC11, and the emitter of photo detector PC11 is connected with the first datum line N1.Photo detector PC11 is conducting state by receiving light, thereby makes control part IC11 energising.The light income of photo detector PC11 is more within the unit interval, and photo detector PC11 makes the magnitude of current of control part IC11 energising just larger.In addition, together with the light-emitting component PC12 of photo detector PC11 and constant-current circuit 52, form optical coupler (Photo Coupler).

Control part IC11 modulates the pulse duration of the impulse wave that is sent in switch element Q11 control terminal, thereby the voltage VB that is input to first siding ring n1 from power supply B is carried out to PWM(pulse width modulation) control.Thus, at the voltage Vout1 of the two ends of second siding ring n2 generation with the corresponding magnitude of voltage of duty ratio.Electric current (that is, the output current of lamp circuit 5) Iout1 corresponding to voltage Vout1 passes through second source line P2, distribution H1, second source line N2 and second siding ring n2 successively.Thus, the output current Iout1 of lamp circuit 5 is supplied to each LED3 through power supply circuits 7.

Now, control part IC11, according to the signal from photo detector PC11 output, changes the duty ratio of switch element Q11, changes thus the current value of the output current Iout1 of lamp circuit 5.At this, larger from the signal level (level) of photo detector PC11 output, control part IC11 just more reduces the duty ratio of switch element Q11, thereby reduces the output current Iout1 of lamp circuit 5.In addition, less from the signal level of photo detector PC11 output, control part IC11 just more increases the duty ratio of switch element Q11, thereby increases the output current Iout1 of lamp circuit 5.

Constant-current circuit 52 possesses: resistance R 12, and it is connected with power supply circuits 7; Comparison circuit OA12, the both end voltage of its input resistance R12 and regulation reference voltage Vref 1 also compare their size; Feedback circuit 52a, it is the comparative result of circuit OA12 based on the comparison, and control signal (being light signal herein) is sent in to control part IC11; Switch element Q13, it carries out PWM control to the regulation reference voltage Vref 1 that is input into comparison circuit OA12.

Resistance R 12 for example is connected with the cathode side of a plurality of LED3 on distribution H1.

Comparison circuit OA12 has the sub-t1 of non-inverting input, reversed input terminal t2, lead-out terminal t3.With regard to the sub-t1 of non-inverting input, with the upstream-side-end of resistance R 12, be connected, and the current potential of input resistance R12 upstream-side-end (that is, the both end voltage of resistance R 12).

Reversed input terminal t2 is connected with control device 11, and is connected with the second datum line N2 via switch element Q13.When switch element Q13 disconnects, be input into reversed input terminal t2 from the regulation reference voltage Vref 1 of control device 11 outputs.On the other hand, when switch element Q13 conducting, by switch element Q13 reversed input terminal t2 and the second datum line N2 short circuit, so the voltage of reversed input terminal t2 uprises.Therefore, by switch element Q13 being carried out to PWM, control the PWM control inputs in the regulation reference voltage Vref 1 of reversed input terminal t2.

From lead-out terminal t3 output, mean the signal of the big or small comparative result of comparison circuit OA12, and described signal is input into to feedback circuit 52a.

Switch element Q13 for example consists of NPN transistor.The emitter of switch element Q13 and the second datum line N2(electronegative potential source) be connected, the collector electrode of switch element Q13 is connected with the reversed input terminal t2 of comparison circuit OA12, and the base stage of switch element Q13 is connected with control device 11.

Feedback circuit 52a for example, forms by between second source line P2 and the second datum line N2, being connected in series resistance R 11, light-emitting component (, photodiode) PC12 and switch element Q12.The anode of light-emitting component PC12 (anode) is connected with resistance R 11, and the negative electrode of light-emitting component PC12 is connected with the collector electrode of switch element Q12.Switch element Q12 for example consists of NPN transistor.The emitter of switch element Q12 is connected with the second datum line N2, and the collector electrode of switch element Q12 is connected with light-emitting component PC12, and the base stage of switch element Q12 is connected with the lead-out terminal t3 of comparison circuit OA12.

In feedback circuit 52a, by turn-on switch component Q12, through resistance R 11, light-emitting component PC12 and switch element Q12, lead to the second datum line N2 successively from the electric current of second source line P2.Thus, the brightness light signal (control signal) corresponding with this current electrifying amount is sent to photo detector PC11 from light-emitting component PC12.

In addition, in lamp circuit 5, the output current Iout1 of switching power circuit 51 successively by each LED3 and resistance R 12, produces voltage at the two ends of resistance R 12 through power supply circuits 7, and the voltage produced at the two ends of resistance R 12 is input into the sub-t1 of non-inverting input of comparison circuit OA12.When switch element Q13 disconnected, regulation reference voltage Vref 1 directly was input into the reversed input terminal t2 of comparison circuit OA12, and the size that is input into the voltage of each terminal t1, t2 by comparison circuit OA12 compares.

Comparison circuit OA12 carries out voltage swing result relatively, and when regulation reference voltage Vref 1 was above, the output signal of the lead-out terminal t3 of comparison circuit OA12 was H(High: height) level when the both end voltage of resistance R 12.Thereby in turn, the input current of the control terminal of (a1) switch element Q12 increases, thereby the electric current of turn-on switch component Q12 increases; (a2) electric current by light-emitting component PC12 increases, thereby the luminous quantity of light-emitting component PC12 increases; (a3) light income of photo detector PC11 increases, thereby the energising amount of control part IC11 increases.

Control part IC11, along with the increase of energising amount, shortens the ON time to the PWM control of switch element Q11.Thereby in turn, output voltage (that is, the output voltage of the lamp circuit 5) Vout1 of (a4) switching power circuit 51 reduces, thereby the output current of switching power circuit 51 (that is, the output current of lamp circuit 5) Iout1 reduces; (a5) electric current by resistance R 12 reduces, thereby the both end voltage of resistance R 12 reduces.

On the other hand, comparison circuit OA12 carries out voltage swing result relatively, and when the both end voltage of resistance R 12 was less than regulation reference voltage Vref 1, the output signal of the lead-out terminal t3 of comparison circuit OA12 was L(Low: low) level.Thereby in turn, the input current of the control terminal of (b1) switch element Q12 reduces, thereby the electric current of turn-on switch component Q12 reduces; (b2) electric current that flows to light-emitting component PC12 reduces, thereby the luminous quantity of light-emitting component PC12 reduces; (b3) light income of photo detector PC11 reduces, thereby the energising amount of control part IC11 reduces.

Control part IC11, along with the minimizing of energising amount, extends the ON time to the PWM control of switch element Q11.Thereby in turn, the output voltage V out of (b4) switching power circuit 51 rises, thereby the output current Iout1 of switching power circuit 51 increases; (b5) electric current by resistance R 12 increases, thereby the both end voltage of resistance R 12 rises.

Namely, if the output current Iout1 of switching power circuit 51 reduces and makes the both end voltage of resistance R 12 be less than regulation reference voltage Vref 1, by constant-current circuit 52, with the both end voltage that can the make resistance R 12 mode control switch power circuit 51 consistent with regulation reference voltage Vref 1, thus the output current Iout1 of increase switching power circuit 51.

As mentioned above, when switch element Q13 disconnects, by the output current Iout1 of switching power circuit 51 control with following electric current (=(regulation reference voltage Vref 1)/(resistance value of resistance R 12)) consistent, this electric current is the corresponding electric current of regulation reference voltage Vref 1 with the reversed input terminal t2 that is input into comparison circuit OA12.

In addition, when switch element Q13 conducting, the voltage of the reversed input terminal t2 of comparison circuit OA12 becomes 0(V), output current Iout becomes 0(A).

Control device 11 is according to the input operation of input device 9, from each LED3 selectivity, to send the mode control point circuit for lamp 5 of illumination light and security personnel's light.

In more detail, control device 11 possesses: acceptance division 11a, and it is for receiving the operation signal from input device 9; Control part 11b, the operation signal that it receives based on acceptance division 11a, control point circuit for lamp 5.

Can input to input device 9: select operation, select light a lamp (that is, the security lamp pattern) of the light of lighting a lamp (that is, illumination light pattern) or ensure public security of illumination light; The light modulation operation, adjust the brightness (luminous flux) of having selected the pattern of lighting a lamp.With regard to input device 9, if input selection operation or light modulation operation, the operation signal that will comprise these content of operation is sent to acceptance division 11a such as the form with wireless signal (infrared ray etc.).

The operation signal that control part 11b receives based on acceptance division 11a, the switch element Q13 of break-make control point circuit for lamp 5, and control inputs is in the regulation reference voltage Vref 1 of comparison circuit OA12 reversed input terminal t2.

In more detail, the operation signal received as acceptance division 11a comprises while selecting to light the selection operation of illumination light, and control part 11b for example, to send the pattern control point circuit for lamp 5 of the first brightness (, the initial setting brightness of illumination light) light from each LED3.In more detail, control part 11b disconnects control to the switch element Q13 of lamp circuit 5, and the output current Iout1 with lamp circuit 5 reaches the mode of illumination with the first current value electric current (corresponding to the electric current of described the first brightness) in described the first current range, the regulation reference voltage Vref 1 that is input into the reversed input terminal t2 of comparison circuit OA12 is controlled to (DC(direct current) and controls) in the first voltage corresponding to the electric current with described the first current value (=(described the first current value) * (resistance value of resistance R 12)).Thus, the output current Iout1 of lamp circuit 5 is controlled to the electric current that (DC control) becomes described the first current value, thereby from each LED3, send the light (illumination light) of described the first brightness.

Lighting under the state of illumination light, when the operation signal of acceptance division 11a reception comprised the light modulation operation of adjusting illumination light brightness, control part 11b reached the mode control point circuit for lamp 5 of the expectation brightness of this light modulation operation appointment with the brightness that can make each LED3.In more detail, control part 11b is controlled in described the first current range the mode to the electric current that should expect brightness with the output current Iout1 by lamp circuit 5, controls the regulation reference voltage Vref 1 that (DC control) is input into comparison circuit OA12 reversed input terminal t2.Thus, the output current of lamp circuit 5 (that is, being supplied in the electric current of each LED3) Iout1 is controlled to (DC control) and should expect in pairs the electric current of brightness, thereby the brightness of each LED3 (that is, the brightness of illumination light) is controlled to this expectation brightness.

As mentioned above, in the illumination light pattern, a plurality of LED3 of current direction in the first current range, light all LED3.

In addition, the operation signal received as acceptance division 11a comprises while selecting to light the selection operation of security personnel's light, and control part 11b for example, to send the mode control point circuit for lamp 5 of the second brightness (, the initial setting brightness of security personnel's light) light from each LED3.In more detail, the regulation reference voltage Vref 1 that control part 11b will be input into comparison circuit OA12 reversed input terminal t2 be controlled to described the second current range in the second current value (for example, the upper bound current value of described the second current range) corresponding second voltage (=(resistance value of resistance R 12) * (described the second current value)), and for example, with the first duty ratio (, initial setting duty ratio) PWM control switch element Q13.In addition, the upper bound current value of the second current range is below the lower bound current value of the first current range.

Thus, by the mode with described the second current value Current Control and the mode controlled with described the first duty ratio PWM, the output current Iout1 of lamp circuit 5 is controlled to average current value electric current electric current in described the second current range, that take described the first duty ratio current value equalization as 0 to described the second current value and value; And be supplied in each LED3 through power supply circuits 7.Thus, each LED3 sends the light (that is, security personnel's light) of the mean flow rate corresponding with described average current value (that is, described the second brightness).

Under the state of lighting security personnel's light, when the operation signal of acceptance division 11a reception comprised the light modulation operation of adjusting security personnel's brightness, control part 11b reached the mode control point circuit for lamp 5 of the expectation brightness of this light modulation operation appointment with the brightness that can make each LED3.In more detail, control part 11b is controlled in described the second current range the duty ratio to the mode control switch element Q13 of the electric current that should expect brightness with the output current Iout1 by lamp circuit 5.Thus, the output current of lamp circuit 5 (that is, being supplied in the described average current of each LED3) Iout1 is controlled to expecting the electric current of brightness, thereby the brightness of each LED3 (that is, the brightness of security personnel's light) is controlled to this expectation brightness.

As mentioned above, in security personnel's optical mode, described the first current range lower bound current value is following, a plurality of LED3 of current direction in the second current range, lights all LED3.

In addition, at control part 11bB, for example store following catalogue: record the corresponding relation between the required LED3 brightness of illumination light and security personnel's various brightness of light and these various brightness.Control part 11bB is with reference to described catalogue, selects the brightness of each LED3 corresponding with the expectation brightness of the illumination light of light modulation operation appointment or security personnel's light, in the mode that can make illumination light or the brightness of the light of ensuring public security reaches this expectation brightness, controls the brightness of each LED3.

(job description)

Then, according to Fig. 2, the work of lighting device 1 is described.Fig. 2 is the flow chart of the work of explanation lighting device 1.

In step S1, acceptance division 11a is with the state standby of the operation signal that can receive input device 9 and send.When in input device 9, having inputted (YES) while selecting the selection operation light illumination light (that is, the illumination light pattern), the processing of lighting device 1 enters step S2.On the other hand, when the selection that does not have input selection to light illumination light in input device 9 operates (NO), the processing of lighting device 1 enters step S5.

In step S2, input, at the operation signal that comprises operation (that is, selecting to light the selection operation of illumination light) content of input device 9, is sent to the acceptance division 11a of control device 11 from input device 9.Acceptance division 11a receives operation signal.Secondly, the selection operation comprised in the operation signal of control part 11b according to acceptance division 11a reception, for example, can send from each LED3 the mode control point circuit for lamp 5 of the first brightness (, the initial setting brightness of illumination light) light.In more detail, control part 11b disconnects control to switch element Q13, and the output current Iout1 with lamp circuit 5 reaches illumination with the first current value electric current in described the first current range (namely, electric current corresponding to described the first brightness) mode, be controlled to first voltage corresponding with the electric current of described the first current value (=(described the first current value) * (resistance value of resistance R 12)) by the regulation reference voltage Vref 1 that is input into the reversed input terminal t2 of comparison circuit OA12.Thus, the output current Iout1 of lamp circuit 5 is controlled to the electric current of described the first current value, and is supplied to each LED3 via power supply circuits 7, thereby each LED3 sends the light (that is, illumination light) of the first brightness, lights illumination light.Then, the processing of lighting device 1 enters step S3.

In step S3, acceptance division 11a is with the state standby of the operation signal that can receive input device 9 and send.When in input device 9, having inputted illumination light light modulation operation (YES), the processing of lighting device 1 enters step S4.On the other hand, when in input device 9, not inputting illumination light light modulation operation (NO), step S1 is returned in the processing of lighting device 1.

In step S4, input, at the operation signal that comprises operation (that is, illumination light light modulation operation) content of input device 9, is sent to the acceptance division 11a of control device 11 from input device 9.Acceptance division 11a receives operation signal.Secondly, the light modulation operation comprised in the operation signal of control part 11b according to acceptance division 11a reception, reach with the output current Iout1 that can make lamp circuit 5 the mode control point circuit for lamp 5 that this light modulation operates the expectation brightness of appointment.In more detail, control part 11b controls regulation reference voltage Vref 1 in the mode that the regulation reference voltage Vref 1 of the reversed input terminal t2 that is input into comparison circuit OA12 reaches the electric current corresponding with this expectation brightness.Thus, the output current Iout1 of lamp circuit 5 is controlled to expecting the electric current of brightness, thereby the brightness of each LED3 (that is, the brightness of illumination light) is controlled to this expectation brightness.Then, step S1 is returned in the processing of lighting device 1.

In step S5, acceptance division 11a is with the state standby of the operation signal that can receive input device 9 and send.When in input device 9, having inputted the selection operation of selecting to light security personnel's light (that is, security personnel's optical mode) (YES), the processing of lighting device 1 enters step S6.On the other hand, when the selection that does not have input selection to light security personnel's light in input device 9 operates (NO), the processing of lighting device 1 enters step S9.

In step S6, input, at the operation signal that comprises operation (that is, selecting to light the selection operation of security personnel's light) content of input device 9, is sent to the acceptance division 11a of control device 11 from input device 9.Acceptance division 11a receives operation signal.Secondly, the selection operation comprised in the operation signal of control part 11b according to acceptance division 11a reception, for example, can send from each LED3 the mode control point circuit for lamp 5 of the second brightness (, the initial setting brightness of security personnel's light) light.In more detail, the regulation reference voltage Vref 1 that control part 11b will be input into comparison circuit OA12 reversed input terminal t2 be controlled to be with described the second current range in the second current value (for example, the upper bound current value of described the second current range) corresponding assigned voltage (=(described upper bound current value) * (resistance value of resistance R 12)), and for example, with the first duty ratio (, initial setting duty ratio) PWM control switch element Q13.

Thus, the output current Iout1 of lamp circuit 5 is controlled to, take the average current value electric current of described the first duty ratio current value equalization as 0 to described the second current value and value, via power supply circuits 7, be supplied to each LED3, thereby each LED3 sends the light corresponding with the mean flow rate (being described the second brightness) of described average current value (that is, security personnel's light).Then, the processing of lighting device 1 enters step S7.

In step S7, acceptance division 11a is with the state standby of the operation signal that can receive input device 9 and send.When in input device 9, having inputted security personnel's light light modulation operation (YES), the processing of lighting device 1 enters step S8.On the other hand, when the light modulation of input security personnel light does not operate in input device 9 (NO), step S1 is returned in the processing of lighting device 1.

In step S8, input, at the operation signal that comprises operation (that is, security personnel's light light modulation operation) content of input device 9, is sent to the acceptance division 11a of control device 11 from input device 9.Acceptance division 11a receives operation signal.Secondly, the light modulation operation comprised in the operation signal that control part 11b receives according to acceptance division 11a, reach the mode control point circuit for lamp 5 of the expectation brightness of this light modulation operation appointment with the brightness of the light that can make to ensure public security.In more detail, control part 11b is controlled in described the second current range the duty ratio to the mode control switch element Q13 of the electric current that should expect brightness with the output current Iout1 by lamp circuit 5.Thus, the output current Iout1 of lamp circuit 5 is controlled to expecting the electric current of brightness, thereby the described mean flow rate of each LED3 (that is, the brightness of security personnel's light) is controlled to this expectation brightness.Then, step S1 is returned in the processing of lighting device 1.

In step S9, acceptance division 11a is with the state standby of the operation signal that can receive input device 9 and send.When in input device 9, having inputted the operation (operation of turning off the light) of selecting to extinguish illumination light and security personnel's light (YES), the processing of lighting device 1 enters step S10.On the other hand, when in input device 9, do not have input selection extinguish illumination light and security personnel light operation the time (NO), step S1 is returned in the processing of lighting device 1.

In step S10, the light-off operation comprised in the operation signal of control part 11b according to acceptance division 11a reception, can extinguish the mode control point circuit for lamp 5 of each LED3.Then, the processing of lighting device 1 finishes.

As mentioned above, in lighting device 1, all each illuminating LEDs 3 double as security personnel's light illuminating part, and illumination doubles as with lamp circuit 5 the light lamp circuit of ensuring public security, thus the lighting a lamp and light modulation of the light of can ensuring public security.

(main effect)

According to the lighting device 1 formed in the above described manner, while lighting illumination light, output current Iout1 be controlled to the electric current in the first current range and from a plurality of LED3, send the mode control point circuit for lamp 5 of illumination light, light security personnel's light time, output current Iout1 is controlled to electric current below the first current range lower bound current value, in the second current range, thereby lights all LED3.That is, all illumination light are used as security personnel's light illuminating part with LED3.Therefore, due to without security personnel's light being set separately with LED and its lamp circuit, therefore can suppress the increase of the complicated and manufacturing cost of structure.

In addition, to carry out pulse width modulation control, send the mode control point circuit for lamp 5 of security personnel's light from a plurality of LED3, therefore can control accurately and send security personnel's light (that is, the little light of brightness).

In addition, due to lamp circuit 5, have the structure that the output current Iout of control switch power circuit 52 is controlled in the both end voltage mode consistent with regulation reference voltage Vref 1 of the resistance R 12 that is connected in power supply circuits 7, therefore can carry out by controlling regulation reference voltage Vref 1 the output current Iout of control point circuit for lamp 5.

In addition, while lighting illumination light, as long as control inputs, in the magnitude of voltage of the regulation reference voltage Vref 1 of comparison circuit OA12, just can be controlled at the electric current in the first current range by the output current Iout of lamp circuit 5.

In addition, light security personnel's light time, as long as the regulation reference voltage Vref 1 that is input into comparison circuit OA12 is carried out to pulse width modulation control, just the output current Iout of lamp circuit 5 can be controlled to electric current in the second current range horizontal pulse width modulated of going forward side by side and control, can carry out light modulation to security personnel's light thus.

(variation of the first embodiment)

In the first embodiment, illustrated and lighted security personnel's light time, by switch element Q13 being carried out to PWM, control the situation that the regulation reference voltage Vref 1 that is input into comparison circuit OA12 is carried out to PWM control, but also can omit switch element Q13, by control part 11b, directly the regulation reference voltage Vref 1 of the reversed input terminal t2 that is input into comparison circuit OA12 is carried out to PWM control (namely, also the regulation reference voltage Vref 1 that is input into comparison circuit OA12 (for example can be controlled to be to assigned voltage, described second voltage) and to described assigned voltage carry out PWM control).In this case, with the partial response ground of the switch element Q13 dispensed, can simplify the structure of lighting device 1.

(the second embodiment)

In the first embodiment, illumination light is illustrated by the situation that monochromatic light forms, but, in the present embodiment, illumination light for example, is consisted of secondary color (, the dichromatism of warm colour and cool colour) light and can mix colours and describe with the situation of light modulation illumination light.Below, according to Fig. 3, to the present embodiment lighting device 1B by with the first embodiment lighting device 1 difference centered by describe.

(structure explanation)

Fig. 3 is the structural representation of the lighting device of the present embodiment.

The lighting device 1B of the present embodiment further possesses on the basis of the first embodiment lighting device 1: a plurality of LED3B(the second illuminating parts), its can launch with each LED3 first photochromic (for example, the correlated colour temperature of 2700K warm colour system photochromic) light of not identical second photochromic (for example, the correlated colour temperature of 6500K cool colour system is photochromic); Lamp circuit (second point circuit for lamp) 5B, it uses power supply B to export (supply) electric current and a plurality of LED3B of driving that light a lamp to a plurality of LED3B; Power supply circuits 7B, it is for the electric current I out2 to a plurality of LED3B feed point circuit for lamp 15B outputs.In lighting device 1B, form illumination light by mixing each LED3 light sent and the light that each LED3B sends.

Each LED3B forms by having the described second photochromic LED respectively, and mutual forward is connected in series in power supply circuits 7B.Herein, each LED3B is connected in power supply circuits 7B in the mode mutually be connected in series, but also mutually the mode that is connected in parallel of forward be equipped on power supply circuits 7B, or also can combined serial connect and the mode that is connected in parallel is connected in power supply circuits 7B.

Lamp circuit 15B possesses switching power circuit 51B and constant-current circuit 52B.

Switching power circuit 51B has the structure identical with the first embodiment switching power circuit 51.In more detail, switching power circuit 51B possesses: switch element Q21, it carries out PWM(pulse width modulation for the output voltage V B to power supply B) control; Transformer (for example, the high-frequency transformer) T2, the duty ratio of its impulse wave of output according to switch element Q21 is carried out transformation output to the output voltage V B of power supply B; Diode D2 and capacitor C 2, it is level and smooth that it carries out rectification for the output current to transformer T2; Photo detector PC21, it is for receiving the control signal (being light signal) from constant-current circuit 52B herein; Control part IC21, it carries out break-make control according to the control signal that photo detector PC21 receives to switch element Q21.

Output voltage and output current by diode D2 and the level and smooth transformer T2 of capacitor C2 rectification, become respectively switching power circuit 51B(namely, lamp circuit 5B) output voltage V out2 and output current Iout2.

Transformer T2 possesses: the iron core of ring-type (omitting diagram); Be wound on first siding ring n3 and the second siding ring n4 of described iron core.The end of first siding ring n3 is connected with the positive pole of power supply B via the 3rd power line P3, and the other end of first siding ring n3 is connected with the negative pole of power supply B with the 3rd datum line N3 via switch element Q21.The end of second siding ring n4 is connected with the 4th power line P4, and the other end of second siding ring n4 is connected with the 4th datum line N4 via diode D2.

In addition, the 4th power line P4 and the 4th datum line N4 interconnect via distribution H2, and are connected with a plurality of LED3B on distribution H2.In addition, power supply circuits 7B consists of the 4th power line P4, the 4th datum line N4 and distribution H2.

Diode D2 forward is connected in the 4th power line P4.At the cathode side of rectifier diode D2, smoothing capacity C2 is connected with the 4th datum line N4 with the 4th power line P4.

For example, switch element Q21 consists of N-channel MOS FET.At the distribution that connects power supply B and first siding ring n3 (for example, the 3rd datum line N3) on, switch element Q21 installs connection as follows: the collector electrode of switch element Q21 is connected with first siding ring n3, and the emitter of switch element Q21 is connected with the negative pole of power supply B.The base stage of switch element Q21 is connected with control part IC21.

For example, photo detector PC21 consists of photistor.The collector electrode of photo detector PC21 is connected with control part IC21, the branch point Z2(that the emitter of photo detector PC21 is connected to the 3rd datum line N3 namely, the point between the negative pole of power supply B and switch element Q21).In addition, together with the light-emitting component PC22 of photo detector PC21 and constant-current circuit 52, form optical coupler.

Control part IC21 modulates the pulse duration of the impulse wave that is sent in switch element Q21 control terminal, thereby the voltage VB that is input to first siding ring n3 from power supply B is carried out to PWM control.Thus, at the voltage Vout2 of the two ends of second siding ring n4 generation with the corresponding magnitude of voltage of duty ratio of impulse wave.Electric current (that is, the output current of lamp circuit 5B) Iout2 corresponding to voltage Vout2 passes through the 4th power line P4, distribution H2, the 4th power line N4 and second siding ring n4 successively.Thus, the output current Iout2 of lamp circuit 5B is supplied to each LED3B through power supply circuits 7B.

Now, control part IC21, according to the energising amount in the control part IC21 of photo detector PC21 reception, changes the duty ratio of switch element Q21, changes thus the current value of the output current Iout2 of lamp circuit 5B.Herein, if the light income of photo detector PC21 increases, control part IC21 reduces the duty ratio of switch element Q21, thereby reduces the output current Iout2 of lamp circuit 5B.In addition, if the light income of photo detector PC21 reduces, control part IC21 increases the duty ratio of switch element Q21, thereby increases the output current Iout2 of lamp circuit 5B.

In addition, constant-current circuit 52B has omitted switch element Q13 on the basis of the first embodiment constant-current circuit 52.In more detail, constant-current circuit 52B possesses: resistance R 22; Comparison circuit OA22, the both end voltage of its input resistance R22 and regulation reference voltage Vref 2 also compare their size; Feedback circuit 52aB, it is the comparative result of circuit OA22 based on the comparison, and control signal (being light signal herein) is sent in to control part IC21.

Resistance R 22 for example is connected with the cathode side of a plurality of LED3B on distribution H2.

Comparison circuit OA22 has the sub-t4 of non-inverting input, reversed input terminal t5, lead-out terminal t6.With regard to the sub-t4 of non-inverting input, with the upstream-side-end of resistance R 22, be connected, and the current potential of the upstream-side-end of input resistance R22 (that is, the both end voltage of resistance R 22).

Often from the regulation reference voltage Vref 2 of control device 11B output, be input into reversed input terminal t5.

From lead-out terminal t6 output, mean the signal of the big or small comparative result of comparison circuit OA22, and it is input into to feedback circuit 52aB.

Feedback circuit 52aB for example, forms by between the 4th power line P4 and the 4th datum line N4, being connected in series resistance R 21, light-emitting component (, photodiode) PC22 and switch element Q22.The anode of light-emitting component PC22 is connected with resistance R 21, and the negative electrode of light-emitting component PC22 is connected with the collector electrode of switch element Q22.Switch element Q22 for example consists of NPN transistor.The collector electrode of switch element Q22 is connected with the 4th datum line N4, and the emitter of switch element Q22 is connected with light-emitting component PC22, and the base stage of switch element Q22 is connected with the lead-out terminal t6 of comparison circuit OA22.

In feedback circuit 52aB, by turn-on switch component Q22, through resistance R 21, light-emitting component PC22 and switch element Q22, lead to the 4th datum line N4 from the electric current of the 4th power line P4.Thus, the brightness light signal (control signal) corresponding with this current electrifying amount is sent to photo detector PC21 from light-emitting component PC22.

In addition, in lamp circuit 5B, the output current Iout2 of switching power circuit 51B successively by each LED3B and resistance R 22, produces voltage at the two ends of resistance R 22 through power supply circuits 7B.The voltage produced at the two ends of resistance R 21 is input into the sub-t4 of non-inverting input of comparison circuit OA22, and the size that is input into the voltage of each terminal t4, t5 by comparison circuit OA22 compares.

Comparison circuit OA22 carries out voltage swing result relatively, and when regulation reference voltage Vref 2 was above, it is high that the output signal of the lead-out terminal t6 of comparison circuit OA22 is H(when the both end voltage of resistance R 22) level.Thereby in turn, the input current of the control terminal of (c1) switch element Q22 increases, thereby the electric current of turn-on switch component Q22 increases; (c2) electric current by light-emitting component PC22 increases, thereby the luminous quantity of light-emitting component PC22 increases; (c3) light income of photo detector PC21 increases, thereby the energising amount of control part IC21 increases.

Control part IC21, along with the increase of energising amount, shortens the ON time to the PWM control of switch element Q21.Thus, in turn, output voltage (that is, the output voltage of the lamp circuit 5B) Vout2 of (c4) switching power circuit 51B reduces, thereby output current (that is, the output current of the lamp circuit 5B) Iout2 that makes to close power circuit 51B reduces; (c5) electric current by resistance R 22 reduces, thereby the both end voltage of resistance R 22 reduces.

Namely, the both end voltage that makes resistance R 22 if the output current Iout2 of switching power circuit 51B increases is in the regulation reference voltage Vref more than 2, by constant-current circuit 52B, with the both end voltage that can the make resistance R 22 mode control switch power circuit 51B consistent with regulation reference voltage Vref 2, thus the output current Iout2 of minimizing switching power circuit 51B.

On the other hand, comparison circuit OA22 carries out voltage swing result relatively, and when the both end voltage of resistance R 22 was less than regulation reference voltage Vref 2, it is low that the output signal of the lead-out terminal t6 of comparison circuit OA22 is L() level.Thereby in turn, the input current of the control terminal of (d1) switch element Q22 reduces, thereby the electric current of turn-on switch component Q22 reduces; (d2) electric current by light-emitting component PC22 reduces, thereby the luminous quantity of light-emitting component PC22 reduces; (d3) light income of photo detector PC21 reduces.

Control part IC21 extends the ON time of switch element Q21.Thereby in turn, the output voltage V out2 of (d4) switching power circuit 51B rises, thereby the output current Iout2 of switching power circuit 51B increases; (d5) electric current by resistance R 22 increases, thereby the both end voltage of resistance R 22 rises.

As mentioned above, by the output current Iout2 of switching power circuit 51B control with following electric current (=(regulation reference voltage Vref 2)/(resistance value of resistance R 22)) consistent, this electric current is the corresponding electric current of regulation reference voltage Vref 2 with the reversed input terminal t5 that is input into comparison circuit OA22.

Herein, while lighting illumination light, LED3 (for example is controlled to the first current range with the output current Iout1 of lamp circuit 5,400-20(mA)), light security personnel's light time, LED3 is controlled at below described the first current range lower bound current value or for example is less than, in second current range (, 2-0.2(mA)) of described the first current range lower bound current value with the output current Iout1 of lamp circuit 5.In addition, while lighting illumination light, more than LED3B is controlled to described the second current range upper bound current value with the output current Iout2 of lamp circuit 5B or for example be greater than, in the 3rd current range (, 400-20(mA)) of current range of described upper bound current value.Thus, for example by the luminous flux scope control of illumination light at 4000-20(lm) in.

The input device 9B of the present embodiment, on the basis of the first embodiment input device 9, can further input and adjust the photochromic toning operation of illumination light.

The control device 11B of the present embodiment possesses acceptance division 11a, control part 11bB.Acceptance division 11a has the structure identical with the acceptance division 11a of the first embodiment.

The operation signal that control part 11bB receives according to acceptance division 11a, control point circuit for lamp 5 and light a lamp and control each LED3, and control point circuit for lamp 5B and light a lamp and control each LED3B.

In more detail, the operation signal received as acceptance division 11a comprises to be selected to light illumination light (namely, when the selection illumination light pattern) operates, control part 11bB with light have regulation brightness and the regulation photochromic (for example, initial setting brightness and the initial setting of illumination light are photochromic) the mode of illumination light control each lamp circuit 5,5B, make each LED3,3B luminous.

Namely, control part 11bB disconnects control to the switch element Q13 of lamp circuit 5, and can make each LED3 send the first brightness (namely, the brightness of each LED3 corresponding with the photochromic and described regulation brightness of described regulation) mode of light (namely, with the output current Iout1 that can make lamp circuit 5 become in described the first current range the first current value (namely, the mode of the electric current current value corresponding with described the first brightness)), to be input into below the regulation reference voltage Vref 1(of reversed input terminal t2 of lamp circuit 5 comparison circuit OA12, be called the first reference voltage Vref 1) be controlled at first voltage corresponding with described the first current value (=(described the first current value) * (resistance value of resistance R 12)).And then, control part 11bB is can make each LED3B send the 3rd brightness (namely, the brightness of each LED3B corresponding with the photochromic and described regulation brightness of described regulation) mode of light (namely, with the output current Iout2 that can make lamp circuit 5B become in described the 3rd current range the 3rd current value (namely, the mode of the electric current current value corresponding with described the 3rd brightness)), to be input into below the regulation reference voltage Vref 2(of reversed input terminal t2 of lamp circuit 5B comparison circuit OA12, be called the second reference voltage Vref 2) be controlled at the tertiary voltage corresponding with described the 3rd current value (=(described the 3rd current value) * (resistance value of resistance R 12)).

Thus, the electric current of described the first current value is supplied to each LED3 by power supply circuits 7 from lamp circuit 5, thereby from each LED3, send the light of described the first brightness, and the electric current of described the 3rd current value is supplied to each LED3B by power supply circuits 7B from lamp circuit 5B, thereby from each LED3B, send the light of described the 3rd brightness.Make these each LED3,3B luminous, light thus the illumination light with the photochromic and described regulation brightness of described regulation.

In addition, lighting under the state of illumination light, when the operation signal of acceptance division 11a reception comprises the light modulation operation of adjusting illumination light brightness, control part 11bB is to keep the photochromic of illumination light and to make the brightness of illumination light reach the mode that this light modulation operates the expectation brightness of appointment, the first reference voltage Vref 1 of control point circuit for lamp 5 and control the brightness of each LED3, and the second reference voltage Vref 2 of control point circuit for lamp 5B and control the brightness of each LED3B.Thus, the illumination light light modulation is become to this expectation brightness.

In addition, lighting under the state of illumination light, the operation signal received as acceptance division 11a comprises while adjusting the photochromic toning operation of illumination light, control part 11bB is with the brightness that keeps illumination light the photochromic photochromic mode of expectation that reaches this toning operation appointment that makes illumination light, the first reference voltage Vref 1 of control point circuit for lamp 5 and control the brightness of each LED3, and the second reference voltage Vref 2 of control point circuit for lamp 5B and control the brightness of each LED3B.Thus, illumination light is mixed colours into to this expectation photochromic.

In addition, for example, the scope of tunable optical is the scope from first photochromic (correlated colour temperature) of each LED3 to each LED3B second photochromic (correlated colour temperature).That is, in the illumination light pattern, carry out at least in following supply: by the supply of the electric current in the first current range to a plurality of LED3, by the supply of the electric current in the 3rd current range to a plurality of LED3B.Thereby light, supply with all LED3, the 3B that electric current is arranged.

In addition, at control part 11bB, for example store following catalogue: record each required LED3 of the brightness of illumination light, photochromic and these brightness, toning, the corresponding relation between 3B brightness.Control part 11bB is with reference to described catalogue, select to expect brightness or to expect photochromic each corresponding LED3, the brightness of 3B with the illumination light of light modulation operation or toning operation appointment, reach with the brightness that can make illumination light the brightness that this expectation brightness or the photochromic mode of this expectation are controlled each LED3,3B.

In addition, when the operation signal received as acceptance division 11a comprises the selection operation of selecting to light security personnel's light (that is, security personnel's optical mode), control part 11bB control point circuit for lamp 5B and extinguish each LED3B.In addition, now, with in the first embodiment, light security personnel the light time work in the same manner, control part 11bB by the first reference voltage Vref 1 of lamp circuit 5 be controlled to described the second current range in second voltage corresponding to the second current value (for example, the upper bound current value of described the second current range).In addition, when carrying out this control, control part 11bB for example, with the switch element Q13 of the first duty ratio (, initial setting duty ratio) PWM control point circuit for lamp 5.Thus, from each LED3, send the light of described the second brightness (for example, the initial setting brightness of security personnel's light).That is, light the light that security personnel's light is used.

In addition, under the state of lighting security personnel's light, when the operation signal received as acceptance division 11a comprises the signal with security personnel's light light modulation operational correspondence, with in the first embodiment to the work of security personnel's light while carrying out light modulation in the same manner, the duty ratio of the switch element Q13 of control part 11bB control point circuit for lamp 5, thereby control the brightness (that is, the brightness of security personnel's light) of each LED3.Thus, the light modulation of security personnel's light is become to the expectation brightness of this light modulation operation appointment.

As mentioned above, under security personnel's optical mode, the electric current in the second current range passes through a plurality of LED3, thereby lights LED3, and this second current range is below the first current range lower bound current value and below the 3rd current range lower bound current value.

In addition, at control part 11bB, for example store catalogue: the corresponding relation that records brightness with the required LED3 brightness of brightness of ensuring public security of security personnel's light.Control part 11bB is with reference to described catalogue, selects to operate with light modulation the brightness that security personnel's photophase of appointment hopes each LED3 that brightness is corresponding, and the mode that reaches this expectation brightness with the brightness of the light that can make to ensure public security is controlled the brightness of each LED3.

(job description)

Secondly, the work of lighting device 1B is described according to Fig. 4.Fig. 4 is the flow chart of the work of explanation lighting device 1B.

In step U1, acceptance division 11a is with the state standby of the operation signal that can receive input device 9B and send.When in input device 9B, having inputted (YES) while selecting the selection operation light illumination light (that is, the illumination light pattern), the processing of lighting device 1B enters step U2.On the other hand, when the selection that does not have input selection to light illumination light in input device 9B operates (NO), the processing of lighting device 1B enters step U5.

In step U2, input, at the operation signal that comprises operation (that is, selecting to light the selection operation of illumination light) content of input device 9B, is sent to the acceptance division 11a of control device 11B from input device 9B.Acceptance division 11a receives operation signal.Secondly, the selection operation comprised in the operation signal of control part 11bB according to acceptance division 11a reception, lighting, (for example has the photochromic and regulation brightness of regulation, the mode of the illumination light photochromic and initial setting brightness of the initial setting of illumination light), control each lamp circuit 5,5B, make each LED3,3B luminous.

In more detail, control part 11bB disconnects control to the switch element Q13 of lamp circuit 5, and for example, can (sending the first brightness from each LED3, the initial setting brightness of each LED3 when lighting illumination light) mode of light (, with the output current Iout1 of lamp circuit 5 can become in described the first current range the first current value (namely, the mode of the electric current current value corresponding with described the first brightness)), the first reference voltage Vref 1 that is input into the reversed input terminal t2 of lamp circuit 5 comparison circuit OA12 is controlled to first voltage corresponding with described the first current value.And then, control part 11bB for example, can (sending the 3rd brightness from each LED3B, the initial setting brightness of each LED3B while lighting illumination light) mode of light (, with the output current Iout2 of lamp circuit 5B can become in described the 3rd current range the 3rd current value (namely, the mode of the electric current current value corresponding with described the 3rd brightness)), the second reference voltage Vref 2 that is input into the reversed input terminal t2 of lamp circuit 5B comparison circuit OA12 is controlled to the tertiary voltage corresponding with described the 3rd current value.Thus, light and have described regulation brightness and the photochromic illumination light of described regulation.Then, the processing of lighting device 1B enters step U3.

In step U3, acceptance division 11a is with the state standby of the operation signal that can receive input device 9B and send.When in input device 9B, having inputted illumination light light modulation operation or toning operation (YES), the processing of lighting device 1B enters step U4.On the other hand, during any one when do not input illumination light light modulation operation and toning operation in input device 9B in (NO), the processing of lighting device 1B is back to step U1.

In step U4, input, at the operation signal that comprises operation (that is, the light modulation of illumination light operation or toning operation) content of input device 9B, is sent to the acceptance division 11a of control device 11B from input device 9B.Acceptance division 11a receives operation signal.Secondly, this content of operation comprised in the control signal of control part 11bB according to acceptance division 11a reception, with the brightness of illumination light or photochromicly can reach the expectation brightness of this operation appointment or expect photochromic mode, the first reference voltage Vref 1 of control point circuit for lamp 5, thereby control the brightness of each LED3, and the second reference voltage Vref 2 of control point circuit for lamp 5B and control the brightness of each LED3B.Thus, the illumination light modulated light becomes this expectation brightness or is mixed colours into this expectation by this photochromic.Then, step U1 is returned in the processing of lighting device 1B.

In step U5, acceptance division 11a is with the state standby of the operation signal that can receive input device 9B and send.When in input device 9B, having inputted the selection operation of selecting to light security personnel's light (that is, security personnel's optical mode) (YES), the processing of lighting device 1B enters step U6.On the other hand, when the selection that does not have input selection to light security personnel's light in input device 9B operates (NO), the processing of lighting device 1B enters step U9.

In step U6, input, at the operation signal that comprises operation (that is, selecting to light the selection operation of security personnel's light) content of input device 9B, is sent to the acceptance division 11a of control device 11B from input device 9B.Acceptance division 11a receives operation signal.Secondly, the selection operation comprised in the control signal of control part 11bB according to acceptance division 11a reception, control point circuit for lamp 5B, extinguish each LED3B.And then control part 11bB is controlled to described second voltage by the first reference voltage Vref 1 of lamp circuit 5.In addition, when carrying out this control, control part 11bB is with the switch element Q13 of described the first duty ratio PWM control point circuit for lamp 5.Thus, from each LED3, send the second brightness (for example, the initial setting brightness of security personnel's light) light.That is, light security personnel's light.Then, the processing of lighting device 1B enters step U7.

In step U7, acceptance division 11a is with the state standby of the operation signal that can receive input device 9B and send.When in input device 9B input security personnel light light modulation operation (YES), the processing of lighting device 1B enters step U8.On the other hand, when at input device 9B, not inputting security personnel's light light modulation operation (NO), the processing of lighting device 1B enters step U9.

In step U8, input, at the operation signal that comprises operation (that is, security personnel's light light modulation operation) content of input device 9B, is sent to the acceptance division 11a of control device 11B from input device 9B.Acceptance division 11a receives operation signal.Secondly, the light modulation operation comprised in the operation signal of control part 11bB according to acceptance division 11a reception, control point circuit for lamp 5B extinguishes each LED3B, under this state, duty ratio to the switch element Q13 of lamp circuit 5 is controlled, thereby control the brightness (that is, the brightness of security personnel's light) of each LED3.Thus, the light modulation of security personnel's light is become to the expectation brightness of this light modulation operation appointment.Then, step U1 is returned in the processing of lighting device 1B.

In step U9, acceptance division 11a is with the state standby of the operation signal that can receive input device 9B and send.When in input device 9B, inputted select to extinguish illumination light and security personnel's light operation (operation of turning off the light) time (YES), the processing of lighting device 1B enters step U10.On the other hand, when in input device 9B, do not have input selection extinguish illumination light and security personnel light operation the time (NO), step U1 is returned in the processing of lighting device 1B.

In step U10, the light-off operation comprised in the operation signal of control part 11bB according to acceptance division 11a reception, can extinguish control point circuit for lamp 5, the 5B of each LED3,3B.Then, the processing of lighting device 1B finishes.

As mentioned above, in lighting device 1B, all each illuminating LEDs 3 double as security personnel's light illuminating part, and illumination doubles as with lamp circuit 5 the light lamp circuit of ensuring public security, thus the lighting a lamp and light modulation of the light of can ensuring public security.

(main effect)

According to the lighting device 1B formed in the above described manner, owing to further possessing: LED3B, it can launch different from LED3 photochromic and can light illumination light; Lamp circuit 5B, it is be used to the driving LED 3B that lights a lamp, and therefore can combine the second photochromic light of the first photochromic light of LED3 emission and LED3B emission and forms illumination light, thereby can light the photochromic illumination light of capable of regulating.That is, the lighting device 1B for color-adjustable, also can be suitable for lighting device of the present utility model.

Particularly, owing to possessing illumination light pattern and security personnel's optical mode, therefore all illumination light can be used as to security personnel's light illuminating part with LED3.In the illumination light pattern, carry out at least in following supply: the electric current in the first current range is supplied with to a plurality of LED3, the electric current in the 3rd current range is supplied with to a plurality of LED3B; Thereby light, supply with all LED3, the 3B that electric current is arranged.In security personnel's optical mode, the electric current in following and the second current range below the 3rd current range lower bound current value of the first current range lower bound current value is by a plurality of LED3, thereby lights all LED3.Therefore, can with lamp circuit 5 dual-purposes, be security personnel's light lamp circuit by illumination light, without the special-purpose lamp circuit of security personnel's light being set separately, throwing light on the switching part of lamp circuit 5 with the special-purpose lamp circuit of security personnel's light be used to switching, therefore prevent the increase of the complicated and manufacturing cost of structure, and can play the function of security lamp.

In addition, owing to further possessing: LED3B, it can launch different from LED3 photochromic and can light illumination light; Lamp circuit 5B, it is be used to the driving LED 3B that lights a lamp, and therefore can combine the second photochromic light of the first photochromic light of LED3 emission and LED3B emission and forms illumination light, thereby can light the photochromic illumination light of capable of regulating.That is, even, for the lighting device 1B of color-adjustable, also can be suitable for lighting device of the present utility model.

In addition, not only comprise lighting device in each technical scope of the variation of the first embodiment, the first embodiment and the second embodiment, also comprise the lighting control method thereof of lighting device.

(subsidiary item)

Above, with reference to accompanying drawing, the utility model preferred embodiment is illustrated, the utility model is not limited to above-mentioned example.So long as those skilled in the art, in claims record scope, can expect various variation or modification, these variation or modification also belong to technical scope of the present utility model certainly.

In addition, any plural combination utility model in the variation of the first embodiment, the second embodiment and the first embodiment, also be interpreted as belonging to technical scope of the present utility model.

Utilizability on industry

The utility model is particularly suitable for having the lighting device of lighting security personnel's light function.

Claims (6)

1. LED lighting device, it is lit a lamp for switching controls illumination light and security personnel's light, it is characterized in that possessing:

A plurality of the first illuminating parts;

The first lamp circuit, it is lit a lamp and drives described a plurality of the first illuminating parts for to described a plurality of the first illuminating parts, supplying with output current;

Control part, it is be used to controlling described the first lamp circuit;

Wherein, described control part is controlled the first lamp circuit as follows:

When lighting described illumination light, described output current is controlled to the electric current in the first current range and described illumination light is sent from described a plurality of the first illuminating parts,

When lighting the described security personnel light time, described output current is controlled to the electric current in the second current range below the lower bound current value of described the first current range, thereby lights all described the first illuminating parts.

2. LED lighting device according to claim 1, is characterized in that,

Described each first illuminating part can be launched respectively the first photochromic light,

Described LED lighting device further possesses:

A plurality of the second illuminating parts, it can be launched and the described first photochromic different second photochromic light;

The second point circuit for lamp, it is lit a lamp and drives described a plurality of the second illuminating parts for to described a plurality of the second illuminating parts, supplying with output current,

Wherein, described the second illuminating part can be lighted illumination light.

3. LED lighting device according to claim 1, is characterized in that, described control part makes described security personnel's light from the mode that described a plurality of the first illuminating parts send by pulse width modulation, to control, and controls described the first lamp circuit.

4. LED lighting device according to claim 2, is characterized in that, described control part makes described security personnel's light from the mode that described a plurality of the first illuminating parts send by pulse width modulation, to control, and controls described the first lamp circuit.

5. LED lighting device, it possesses: a plurality of first illuminating parts of the first photochromic light can be launched, a plurality of second illuminating parts of the light photochromic from described first photochromic different second can be launched,

It is characterized in that, described LED lighting device has illumination light pattern and security personnel's optical mode,

In the illumination light pattern, carry out at least in following supply: the electric current in the first current range is supplied with to described a plurality of the first illuminating parts, the electric current in the 3rd current range is supplied with to described a plurality of the second illuminating parts; Thereby light, supply with all illuminating parts that electric current is arranged;

In security personnel's optical mode, make described a plurality of the first illuminating parts of current direction in the second current range, thereby light all described the first illuminating parts, described the second current range is below the lower bound current value of described the first current range and below the lower bound current value of described the 3rd current range.

6. LED lighting device according to claim 5, is characterized in that, under described security personnel's optical mode, the electric current that flows to described illuminating part is to have carried out the electric current of extra pulse width modulated.

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