JP4888351B2 - Lighting apparatus and lighting apparatus using the same - Google Patents

Description

  The present invention relates to a lighting device for using in combination a resistive load such as an incandescent lamp, a capacitive load such as a bulb-type fluorescent lamp, an inductive load, and the like, and a lighting fixture using the lighting device. It is.

  In recent years, luminaires equipped with human body detection sensors for detecting and lighting people and illuminance sensors for controlling lighting with ambient brightness for power saving and crime prevention purposes have been used outdoors and on the side of ordinary houses. It has become widespread (Figure 12). Lighting fixtures other than such living spaces often use incandescent lamps that can be configured in a simpler and cheaper manner, but incandescent lamps have poor energy conversion efficiency into light and are not used by people. In the case of lighting, it is often dimmed to save power.

  FIG. 13 shows a configuration example of a sensor-equipped lighting fixture having an incandescent lamp dimming function used on the shop side. The lighting fixture 20 includes a cover 21 made of a translucent material, a cover packing 22 for waterproofing, a lamp 23 and a flange 24 for supporting them, and a socket 25 for the lighting load 1. The flange 24 includes a lighting device for controlling lighting lighting, and an infrared sensor for lighting a lighting load 1 by sensing a person's movement in the lower portion and lighting control with ambient illuminance. The sensor unit 26 in which the illuminance sensor is incorporated is exposed, and the change is read by the load control unit inside the lighting device.

  For example, if the value read by the illuminance sensor is equivalent to daytime, the lighting load is turned off regardless of the presence or absence of a person, and when the surrounding illuminance becomes arbitrarily dark, the incandescent lamp is dimmed at 30%, Furthermore, if a human movement is detected by the infrared sensor in this state, the incandescent lamp is turned on 100%. Furthermore, when it is determined that it is midnight after an arbitrary time, the lighting device is provided with a function of turning off the lighting again and turning on the lighting only when there is a person.

  Next, FIG. 14 shows a configuration example of a dimming control circuit using a switching element used in such a lighting fixture. A specific circuit example is shown in FIG. The circuit configuration of FIG. 15 will be described in detail in the description of FIG. 3 described later. Based on the power supply phase signal detected by the power supply phase detection unit 4, the load control unit 5 outputs a trigger signal at a predetermined phase angle. The lighting load 1 is driven by the commercial AC power supply AC by controlling the phase of the load driving unit 3 configured using a switching element such as the triac element TR.

  The operation of the load control unit 5 and the load driving unit 3 when the triac element TR is on will be described with reference to FIG. The load control unit 5 always keeps the output to the load driving unit 3 at the H level when the lighting load 1 is not turned on. When the triac element TR is turned on, that is, when the lighting load 1 is turned on, the timing after a predetermined phase time T1 (for example, 9 milliseconds) from the timing when the output of the power supply phase detector 4 is inverted from the H level to the L level. To the timing after pulse time T2 (for example, 500 microseconds), the trigger waveform is set to the L level in a pulse shape. As a result, the transistor Q2 of the load driving unit 3 is turned on, and the triac element TR is turned on when a trigger current flows. Immediately after this turn-on, a sinusoidal current flows through the illumination load 1 composed of an incandescent light bulb that is a resistive load.

  At this time, the light control can be performed by controlling the times T1 and T2 by the load controller 5. For example, when T1 is gradually shortened and T2 is prolonged, the effective value of the input current of the incandescent lamp, which is a resistive lighting load, increases in proportion thereto. As a result, the lighting load is dimmed toward 0 to 100% brightness.

  FIG. 17 shows a configuration example when a sensor function is added to this. In this case, the basic operation regarding lighting of the illumination load 1 is as described above, but the sensor unit 7 is connected to the load control unit 5, and the load control unit 5 includes the lighting condition setting unit and the sensor. Based on the logical sum and logical product of the sensor signals obtained from the unit 7, it is determined at what timing and how the lighting load 1 is lit.

In luminaires used outdoors and on the side of the house, lighting devices that use switching elements such as incandescent lamps and triac elements that can be dimmed and controlled with such resistive lighting loads are often used in combination with sensors. However, in recent years, in a society where power saving is demanded, lighting fixtures using fluorescent lamps having higher energy conversion efficiency and longer life than incandescent lamps are increasing. In fact, in such a background, an illumination load (see FIG. 11) that can be mounted in an incandescent lamp socket as it is in the same size and shape as an incandescent lamp like a light bulb type fluorescent lamp has been developed. ing. For example, Patent Documents 1 and 2 disclose an illumination device that controls the phase of a bulb-type fluorescent lamp.
JP-A-11-135290 JP-A-11-111486

  However, when a resistive load (for example, an incandescent lamp) to be dimmed is replaced with a capacitive load (for example, a bulb-type fluorescent lamp) as it is, if the phase control as described above is performed, However, there is a problem that the lighting start time of the incandescent lamp differs from the lighting start time of the light bulb type fluorescent lamp. This is because incandescent lamps have an input current that flows in proportion to the input voltage. On the other hand, a capacitive load such as a bulb-type fluorescent lamp flows an input current unless it reaches a certain input voltage. This is due to the characteristic that there is no lighting, that is, no lighting.

  Next, FIG. 18 shows a basic configuration example of a capacitive load represented by a bulb-type fluorescent lamp. Inverter circuit IV that includes a rectifier circuit unit composed of a diode bridge DB or the like in the power input unit and an electrolytic capacitor Ci for smoothing the rectified output, and lights the fluorescent lamp FL by the energy stored in the electrolytic capacitor Ci. Consists of Further, the relationship between the input voltage and the input current has a waveform as shown in FIG. 19, and the input current flows when the voltage Vci across the electrolytic capacitor Ci reaches a predetermined voltage (see Patent Document 1).

  FIG. 20 shows the relationship between the input voltage and the lighting state when lighting control is performed on a capacitive load, for example, a light bulb type fluorescent lamp, in the lighting device in which the above-described resistive load is dimmed. The trigger signal in this figure is a waveform in the case of dimming lighting so as to increase from 0% to 100% lighting in the case of an incandescent lamp. At the falling position where the trigger signal changes from H level to L level, the phase of the power supply voltage is shifted from point f (near 180 °) to point e (0 ° side). In the case of a bulb-type fluorescent lamp, even if the trigger signal is applied at a position where the current of the trigger signal falls at a position where no current flows to the bulb-type fluorescent lamp, that is, at a position where the power supply voltage is low, Can not. The lighting state is the time when the falling phase of the trigger signal is shifted to the voltage position (g point) at which the bulb-type fluorescent lamp can be lit by the dimming control.

  Since such a phenomenon exists, for example, assuming that a bulb-type fluorescent lamp can be lit at a phase of 70 °, and the falling phase of the trigger signal is automatically shifted in increments of 2 °, an input with a period of 60 Hz Even if the phase is shifted every half cycle (120 Hz) of the voltage, the light is turned on after 35 cycles of 8.3 ms, that is, with a delay of about 0.3 s. At this time, for example, in a lighting fixture with an infrared sensor, if a person is moving at 5 m / s, even if a trigger signal is applied by detecting the person, the lamp is turned on after traveling about 1.5 m As a result, the user will feel a delay in lighting compared to the incandescent lamp.

  Actually, from the relationship between the electrolytic capacitor Ci and the input voltage, when the trigger signal is applied with the phase of the power supply voltage being 90 ° or higher and the voltage Vci is higher than the predetermined voltage, the inverter circuit IV instantaneously However, since the voltage Vci immediately decreases, the electrolytic capacitor Ci may not be charged and a flicker phenomenon may occur. For this reason, for example, in the lighting mode in which dimming is continued at a certain level, there is a possibility that a dimming lamp is lit with an incandescent lamp, but a flickering is repeated with a light bulb type fluorescent lamp.

  Therefore, in general, for such a phenomenon, each lighting device is set to a dedicated control method or a switch is provided to switch for each load used by the user. It copes with such problems due to load differences. However, when such a countermeasure is used, the provision of the switch unit in the lighting device causes a problem that the arrangement of the lighting device inside the fixture is restricted and the configuration of the lighting fixture becomes complicated. Also, in recent years, for example, if an illumination load using LEDs is a light load, whether it is a resistive load or a capacitive load may not be apparent in appearance, and the user can determine it. Is also very difficult.

  The present invention has been made in view of the above points, and an object of the present invention is to enable a user to freely select a lighting load in a lighting fixture that controls lighting of a lighting load by a switching element. An object of the present invention is to provide an illuminating device and a luminaire capable of performing lighting control in accordance with each load characteristic without having to set the illuminating device in consideration of the illumination load.

  In order to solve the above-mentioned problem, the invention of claim 1 is a switching element (load driving unit 3) for turning on / off a commercial power supply AC supplied as a power source of the lighting load 1, as shown in FIG. A power supply phase detector 4 for detecting the phase of the commercial power supply AC for phase control of the illumination load 1 and a load controller 5 for receiving the output of the power supply phase detector 4 and determining the conduction angle of the switching element are provided. In the lighting device that controls lighting of the lighting load 1 with a signal transmitted from the control unit 5 to the switching element at an arbitrary conduction angle, the load control unit 5 is configured to turn on the commercial power supply AC for a predetermined period after the power is turned on. A load determination unit 5a that turns on the switching element at a phase that can be lit by any lighting load 1 (for example, an incandescent lamp, a bulb-type fluorescent lamp, or an LED lamp) and determines the type of the lighting load 1 during that period. Is characterized in that the switching to the operation mode corresponding to the type of lighting load 1 determined by the load determination unit 5a.

  According to a second aspect of the present invention, in the first aspect of the invention, the load determination unit 5a includes a load current detection unit 8 that detects a current flowing through the lighting load 1, and a load voltage detection that detects a voltage applied to the lighting load 1. The type of the illumination load 1 is determined by comparing the signal level of the detection signal obtained from the unit 9.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the load current detector 8 is a secondary provided in the inductor Lf for the high frequency filter 2 connected in series between the lighting load 1 and the commercial power source AC. It is characterized by detecting the induced voltage of the winding (FIG. 3).

  According to a fourth aspect of the present invention, in the first to third aspects of the present invention, the load determination unit 5a has an illuminance level of each wavelength obtained by the illuminance sensor 7A having a plurality of optical filters that selectively transmit light in different wavelength regions. The illumination load 1 is discriminated by comparing the two (FIG. 4).

  According to a fifth aspect of the present invention, in the fourth aspect of the invention, the load determining unit 5a determines the type of the illumination load 1 using the illuminance sensor 7A that controls lighting / extinction of the illumination load 1 according to the ambient illuminance. It is characterized by.

  The invention of claim 6 is a lighting fixture comprising the lighting device according to any one of claims 1 to 5 and an illumination load socket 25 of an E base (FIGS. 10 and 13). .

  According to the first aspect of the present invention, during a predetermined period after the power is turned on, the switching element is turned on at a phase at which the lighting load can turn on the conduction angle of the commercial power source, and the type of the lighting load is determined during that period. And switching to the operation mode according to the type of illumination load determined by the load determination unit, it is possible to avoid problems such as flicker and lighting delay due to differences in characteristics of the illumination load. As a result, it is possible to provide a lighting device that is not affected by the difference in load characteristics, and the user does not need to set it consciously and can freely select a lighting load.

According to the second aspect of the present invention, it is possible to automatically select a lighting operation in accordance with the characteristics of the lighting load from the difference in electrical characteristics of the lighting load.
According to the invention of claim 3, by detecting the load current from the current flowing through the inductance element for the high frequency filter, it is possible to reduce the number of components of the load current detection unit.

According to the fourth aspect of the present invention, it is possible to automatically select a lighting operation in accordance with the characteristics of the lighting load based on the difference in the light output characteristics of the lighting load.
According to the fifth aspect of the present invention, the content of the lighting control for the ambient illuminance can be changed according to the type of the illumination load by determining the type of the illumination load by using the illuminance sensor of the lighting fixture with the brightness sensor.

  According to the sixth aspect of the present invention, the E-shaped base has a substantially spherical or substantially cylindrical illumination load shape that is easy to rotate for attachment to a lighting fixture. Therefore, when sharing various lighting loads is considered, it is easy to design a lighting fixture including the lighting device.

Embodiments of the present invention will be described below with reference to the drawings.
(Embodiment 1)
A configuration example of the illumination device of the present embodiment is shown in FIG. The basic configuration and operation are the same as those of the conventional example of FIG. 14 except that a load current detection unit 8 for detecting the current of the lighting load 1 and a load voltage detection unit 9 for detecting the load voltage. Each detection signal is provided so as to be supplied to a load control unit 5 that is also used as a load determination unit 5a.

  Reference numeral 1 denotes an illumination load, for example, a resistive load such as a relatively small incandescent bulb in which a light distribution reflective film is formed by vapor deposition of silver on a bulb. In addition, instead of an incandescent bulb, a capacitive load such as a bulb-type fluorescent lamp may be connected.

  Reference numeral 2 denotes a filter unit, which is composed of a capacitor and a coil in order to remove the high frequency noise between the commercial AC power supply AC and the lighting device.

  Reference numeral 3 denotes a load driving unit configured to use a switching element such as a triac element in order to drive the illumination load 1 in response to a trigger signal output from the load control unit 5.

  Reference numeral 4 denotes a power supply phase detection unit that detects a power supply phase to be used as a synchronization signal when the lighting load 1 is phase-controlled.

  A load control unit 5 includes an IC such as a microcomputer for controlling the operation of the illumination load 1. In addition, it also functions as a load determination unit 5a that receives detection signals from the load current detection unit 8 and the load voltage detection unit 9 to determine the type of load.

  Reference numeral 6 denotes a control power supply generation unit, which is composed of a diode, a capacitor, a Zener diode, and the like for rectifying the commercial AC power supply AC and converting it to a DC voltage.

  A detailed circuit example of each part will be described later in the embodiment of FIG.

  The waveforms of the load voltage signal and load current signal supplied to the load controller 5 are illustrated in FIG. The load current signal in the figure shows the case of a resistive load and the case of a capacitive load. In this embodiment, a trigger signal is given based on the power supply phase signal so that the load voltage signal and the load current signal are synchronized.

  The load control unit 5 includes a microcomputer having an A / D conversion input port, digitizes a signal that fluctuates in an analog manner, and reads a load voltage value and a load current value at an arbitrary time interval T. For example, it is assumed that the load voltage signal has a value of Vi1 at the time point T1 and a value of Vi2 at the time point T2. At this time, in the case of a resistive load, the load current signal is Va1 at time T1 and Va2 at time T2. In the case of a capacitive load, the load current signal is Vb1 at the time point T1 and Vb2 at the time point T2, but Vb2 has a non-zero value, whereas Vb1 is zero. Thus, the type of the illumination load 1 can be determined by reading the waveform of each load current signal and making a relative determination.

  For example, when the value of the load current signal is equal to or more than 0 in an interval where the value of the load voltage signal is not 0, it is determined that the lighting load is a capacitive load. Further, when the value of the load current signal is substantially proportional to the value of the load voltage signal, the lighting load may be determined as a resistive load.

  Further, when the value of the load current signal is always 0 even though the value of the load voltage signal is not 0, the load abnormality can be detected if it is determined that there is no load or a load abnormality. In this case, the lighting signal may be stopped.

(Embodiment 2)
A circuit diagram of this embodiment is shown in FIG. In the present embodiment, the load current detection unit 8 in the first embodiment is improved. The basic operation is the same as that shown in the first embodiment. Here, the operation of the load current detection unit 8 will be described.

  The load current detection unit 8 of the present embodiment uses the filter unit 2 that is used to remove high-frequency noise that is generated when the lighting load 1 is dimmed. Specifically, a secondary winding Li that is electromagnetically coupled to the inductor Lf of the filter unit 2 is provided, and the voltage generated by rectifying the voltage generated in the secondary winding Li by the diode bridge DBi is a resistance. Detection is performed by dividing the pressure with Ri1 and Ri2.

  In this way, by using the inductor Lf of the filter unit 2 for the load current detection unit 8, the number of components can be reduced when performing current detection compared to a case where a separate current transformer is provided.

  Note that the load voltage detection unit 9 detects the power supply voltage of the commercial AC power supply AC as a load voltage, and similarly to the load current detection unit 8, the voltage after rectification by the diode bridge DBv is divided by resistors Rv1 and Rv2. Is detected.

  Next, the circuit configuration of each unit in FIG. 3 will be described. The following description is the same in the conventional example of FIG.

  The load driving unit 3 includes a triac element TR inserted in a power supply path from the AC power supply AC to the lighting load 1, a PNP type in which an emitter is connected to the gate of the triac element TR and a collector is connected to the ground via a resistor R6. Transistor Q2. The base of the transistor Q2 is connected to the load controller 5 via a resistor R7, and is connected to the emitter of the transistor Q2 via a resistor R8. A parallel circuit of a resistor R9 and a capacitor C5 is connected between one main electrode of the triac TR and the emitter of the transistor Q2.

  The power phase detector 4 includes a rectifier diode D3 whose anode is connected to the AC power source AC, an NPN transistor Q1 whose base is connected to the cathode of the rectifier diode D3 via a resistor R3, and a base-emitter of the transistor Q1. A parallel circuit of a resistor R4 and a capacitor C4 connected therebetween is provided. That is, the output voltage of the AC power supply AC is rectified by the rectifier diode D3, divided by the resistors R3 and R4, smoothed by the capacitor C4, and input to the base of the transistor Q1. The collector of the transistor Q1 is connected to a DC power source via a resistor R5, and the connection point between the resistor R5 and the transistor Q1 is connected to the IC of the load control unit 5. That is, while the output voltage of the AC power supply AC is higher than the predetermined voltage, the power supply phase detection unit 4 is turned off by turning on the transistor Q1, and the input voltage is lower than the predetermined voltage. When the transistor Q1 is turned off sometimes, the output becomes the H level, and the output is inverted in the vicinity of the phase where the voltage of the AC power supply AC becomes 0V.

  As shown in FIG. 16 of the conventional example, the timing a at which the output of the power supply phase detector 4 changes from the L level to the H level is slightly before the phase timing b at which the corresponding voltage becomes 0 V, and the output is at the H level. The timing c at which the level shifts from L to L is slightly later than the timing d of the phase at which the corresponding voltage becomes 0V.

  The control power generator 6 includes a first resistor R1 for preventing inrush current, both ends of which are connected to the AC power source AC, and a series circuit of a first capacitor C1 made of, for example, a film capacitor and a first diode D1. A series circuit of a second diode D2 and a second capacitor C2 connected in parallel to the first diode D1, and a second resistor R2 and a Zener diode ZD connected in parallel to the second capacitor C2. And a third capacitor C3 connected in parallel to the Zener diode ZD.

  The first diode D1 has an anode connected to the first capacitor C1 and a cathode connected to the AC power supply AC, and the second diode D2 has an anode connected to the second capacitor C2 and a cathode connected to the first capacitor C1. The Zener diode ZD is connected to the connection point between the diode D1 and the first capacitor C1. The anode of the Zener diode ZD is connected to the second resistor R2, and the cathode is connected to the same side as the first diode D1 with respect to the AC power supply AC. ing. That is, the control power supply voltage is generated by the Zener voltage of the Zener diode ZD.

  Note that the circuit configurations of the load driving unit 3, the power supply phase detection unit 4, and the control power generation unit 6 are merely examples, and it goes without saying that other circuit configurations having similar functions may be used.

(Embodiment 3)
FIG. 4 shows a configuration example of the lighting device of the present embodiment. The basic configuration is the same as that of the conventional example of FIG. 17, and an illuminance sensor 7A for determining the light output of the illumination load 1 is provided, and is connected to the load control unit 5 that also serves as the load determination unit 5a. At this time, as shown in FIG. 5, the illuminance sensor 7A has three sets of optical filters and light receiving elements each having a different transmission wavelength inside the light receiving surface, and an output signal is output from each light receiving element.

  FIG. 6 shows a relationship diagram between the wavelength of the general output light and the relative light emission intensity of the fluorescent lamp, the incandescent lamp, and the white LED lamp. The white LED lamp is composed of a blue diode and a yellow phosphor.

  At this time, for the transmission characteristics of each optical filter shown in FIG. 5, for example, the transmission wavelength range of the optical filter A is 380 to 420 nm, the transmission wavelength range of the optical filter B is 430 to 470 nm, and the transmission wavelength range of the optical filter C is 630 to 670 nm.

  The load determination can be performed by processing the signal of each light receiving element input to the load control unit 5 as shown in the flowchart of FIG.

  From the relationship between the wavelengths in FIG. 6, when the relative light emission intensity in the vicinity of 630 to 670 nm is the highest, it is determined that the illumination load is an incandescent lamp. When the relative light emission intensity near 380 to 420 nm is higher than the light emission intensity near 630 to 670 nm, it is determined that the illumination load is a fluorescent lamp. Furthermore, when the relative light emission intensity in the vicinity of 430 to 470 nm is the highest, it is determined that the illumination load is an LED lamp.

  In this way, by determining the type of illumination load based on the wavelength of the light output, it becomes possible to automatically select a lighting operation that matches the characteristics of the illumination load. For example, when it is determined that the illumination load is an incandescent lamp, a dimming operation may be performed. Also, when it is determined that the lighting load is a fluorescent lamp, the fluorescent lamp has a relatively short flashing life compared to other lighting loads, so when used in lighting fixtures that operate intimidating with the lighting load flashing In such a case, the load controller may automatically adjust so as to reduce the number of times the lighting load blinks.

  Further, when used in combination with Embodiment 1, it is possible to determine whether the load is a capacitive load or a resistive load even with the same LED lamp, so that the determination of the illumination load can be made clearer. Become.

(Embodiment 4)
In this embodiment, in addition to the three optical filters and the light receiving element of the illuminance sensor in the third embodiment, an optical filter D and a light receiving element D having the entire visible light region encompassing it as a filter region are provided. The configuration of the illuminance sensor is shown in FIG.

  Using the signal obtained from the light receiving element D, the ambient illuminance of the luminaire to which the illuminating device is attached is read, and lighting of the illumination load 1 is controlled by light / dark judgment with respect to the arbitrarily set illuminance. The operation of the illuminance signal and the illumination load by the light receiving element D at this time will be described with reference to FIG.

  First, the relationship between the signal from the illuminance sensor and the ambient illuminance of the lighting fixture is shown in FIG. The output signal waveform of the illuminance sensor is continuously displaced during one day in an arbitrary range α to β. The illuminance sensor unit is composed of, for example, a photo IC diode, and outputs a voltage signal having a higher voltage value as the surrounding is brighter.

In the load control unit, a threshold value X is arbitrarily set for the illuminance detection signal of the illuminance sensor. When the signal level exceeds the threshold value X, the lighting load is turned off, and when the signal level falls below the threshold value X, the lighting load It is possible to perform control such as lighting. For example, if the threshold value X is set to the signal level of the illuminance sensor at sunset, the illumination load can be automatically turned on every evening.
In the present embodiment, the illumination load determination process is performed in combination with such lighting control.

Next, the illumination load determination process and the subsequent operation will be described with reference to FIG.
For example, it is assumed that the illumination load determination process is performed when the threshold value X falls below an arbitrarily set value.

  First, in the load determination process, the illumination load is turned on. By this lighting, the signal level of the light receiving element D of the illuminance sensor increases sharply. At this time, if the threshold value X is exceeded, lighting control using the threshold value X by the illuminance sensor described above will be affected. In consideration of this, until the load determination processing by the light output is completed, the result of the comparison determination with the threshold value X by the light receiving element D is ignored, and the ambient illuminance immediately before lighting is stored in the load control unit. To leave. Next, in the load determination process, after the signals of the light receiving elements A to C are detected and the operation mode of the illumination load is determined, the illuminance is confirmed by the signal of the light receiving element D with respect to the threshold level.

  At this time, when the illumination load is turned on, the signal level of the illuminance sensor increases, and when the threshold level is exceeded, there is a possibility that the illumination load will be turned off (self-flashing phenomenon). After performing the above, it is only necessary to prevent self-flashing due to self-light by performing a mask process that eliminates the influence on the sensor signal due to flashing of the illumination load. For example, the threshold level after lighting may be determined by adding the amount of increase after lighting of the illumination load with respect to the illuminance level (threshold level) before lighting (which is a constant value regardless of the surrounding illuminance).

  A configuration example of an actual lighting fixture is shown in FIG. In the lighting fixture, the lighting load 1 and the lighting device 34 are arranged in a fixture housing 30 and a translucent globe 31 for transmitting light. Further, an illuminance sensor 7A is incorporated in the lighting device 34, and is arranged inside the lighting fixture in addition to the translucent window 33 provided on the outer side of the fixture for transmitting light around the lighting fixture. Thus, by providing the transparent window 32, the light of its own illumination load 1 can be detected.

  As described above, by combining the function of determining the ambient illuminance with the illuminance sensor for determining the load, the illuminance sensor with the illuminance sensor can be used.

(Embodiment 5)
This embodiment will be described with reference to FIG. 1a is an incandescent lamp, 1b is a bulb-type fluorescent lamp, and 1c is a bulb-type LED lamp. Various types of illumination loads are conceivable, such as incandescent lamps and LED lamps for resistive loads, and bulb-type fluorescent lamps and LED lamps for capacitive loads. At this time, if it is a fluorescent lamp or an LED lamp, its base is also various.

  Therefore, in this embodiment, the lighting apparatus according to the first to fourth embodiments is configured as a lighting fixture in combination with a socket of an E base. If the socket of the E base is used, the shape of the lighting load must be a substantially spherical shape or a substantially cylindrical shape as shown in FIG. This is because the approximate dimensions are inevitably the same. For this reason, for example, the cover of the lighting fixture is not affected greatly by the design against the difference in the lighting load. The shared design that can be stored becomes easy.

It is a block diagram which shows the structure of Example 1 of this invention. It is an operation | movement waveform diagram of Example 1 of this invention. It is a circuit diagram which shows the detailed structure of Example 2 of this invention. It is a block diagram which shows the structure of Example 3 of this invention. It is explanatory drawing which shows schematic structure of the illumination intensity sensor with an optical filter used for the illuminating device which concerns on Example 3 of this invention. It is a characteristic view which shows the spectral characteristic of the optical filter used for Example 3 of this invention, and the spectral characteristic of several illumination load. It is a flowchart which shows operation | movement of load discrimination | determination by the illumination intensity sensor of Example 3 of this invention. It is explanatory drawing which shows schematic structure of the illumination intensity sensor with an optical filter used for the illuminating device which concerns on Example 4 of this invention. It is operation | movement explanatory drawing of Example 4 of this invention. It is sectional drawing which shows schematic structure of the lighting fixture incorporating the illuminating device which concerns on Example 4 of this invention. It is a perspective view which shows the shape of the illumination load of E nozzle used for Example 5 of this invention. It is a perspective view which shows the external appearance of the lighting fixture used by the conventional shop side. It is a disassembled perspective view which shows the structural example of the lighting fixture with an incandescent lamp dimming type sensor used by the conventional shop side. It is a block diagram which shows the structural example of the conventional incandescent lamp light control illuminating device. It is a circuit diagram which shows the detailed circuit structure of the conventional incandescent lamp light control illuminating device. It is an operation | movement waveform diagram at the time of the incandescent lamp light control of a prior art example. It is a block diagram which shows the structural example of the conventional illuminating device for incandescent lamp light control with a sensor. It is a circuit diagram which shows the example of an internal structure of the light bulb type fluorescent lamp which is the conventional capacitive load. It is a wave form diagram which shows the input current waveform of the conventional bulb-type fluorescent lamp. It is a wave form diagram which shows operation | movement when a light bulb type fluorescent lamp is connected to the conventional incandescent lamp dimming device.

Explanation of symbols

AC commercial AC power source 1 lighting load 3 load drive unit 4 power supply phase detection unit 5 load control unit 5a load determination unit 8 load current detection unit 9 load voltage detection unit

Claims (6)

Switching element for turning on / off commercial power supplied as power source for lighting load, power source phase detecting unit for detecting phase of commercial power source for phase control of lighting load, and switching on receiving output of power source phase detecting unit In a lighting device that includes a load control unit that determines a conduction angle of an element, and controls lighting lighting by a signal transmitted from the load control unit to a switching element at an arbitrary conduction angle.
The load control unit includes a load determination unit that turns on the switching element at a phase at which the lighting load can turn on the conduction angle of the commercial power source for a predetermined period after the power is turned on, and determines the type of the lighting load during the period. A lighting device that switches to an operation mode according to the type of illumination load determined by the load determination unit. The load determination unit compares the signal level of the detection signal obtained from the load current detection unit that detects the current flowing through the lighting load and the load voltage detection unit that detects the voltage applied to the lighting load, thereby comparing the lighting load. The illumination device according to claim 1, wherein the type of the illumination device is determined. 3. The lighting device according to claim 2, wherein the load current detecting unit detects an induced voltage of a secondary winding provided in an inductor for a high frequency filter connected in series between the lighting load and the commercial power source. The load determination unit determines an illumination load by comparing illuminance levels of respective wavelengths obtained by an illuminance sensor having a plurality of optical filters that selectively transmit light in different wavelength regions. The illuminating device in any one of -3. The lighting device according to claim 4, wherein the load determination unit determines the type of the illumination load using an illuminance sensor that controls lighting / extinction of the illumination load according to the ambient illuminance. A lighting fixture comprising the lighting device according to claim 1 and a lighting load socket of an E base.

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