JP2018073727A - Lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that when a noise generated in accordance with an operation of a power supply part and/or a control part is input via wiring from an optical sensor to an input part of the control part to the control part, a normal operation of the control part may not be performable in a system having an optical sensor which receives both light of a light emitting element for illumination and external light for controlling on/off of the light emitting element on the basis of illuminance detected by the optical sensor by arrangement and wiring configurations of parts including the optical sensor, the control part, and the other components of a lighting apparatus.SOLUTION: The lighting apparatus configured of a main body having an internal space with an opened lower side surface comprises: a light source substrate on whose lower side surface a light emitting element for illumination is arranged; an optical sensor arranged on the lower side surface of the light source substrate for receiving light of the light emitting element and external light; and a circuit board on which a control part for controlling on/off of the light emitting element on the basis of received light of the optical sensor is arranged, in the internal space of the main body, therein a lead wire via which an illuminance detection signal of the optical sensor is input to the control part is wired across the proximity end sides of both the light source substrate and the circuit board.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting fixture that performs lighting control of a light source by detecting ambient light and darkness with an optical sensor.

  When the light sensor detects the light and dark illuminance around the lighting fixture, the lighting control unit uses an LED (Light Emitting Diode) as the light source of the lighting fixture, and controls whether this LED is turned on or off. In an illuminating device, when the illuminance around the luminaire decreases and a predetermined dark illuminance is detected by an optical sensor (also referred to as an illuminance sensor), an LED that is a light source in the illuminating device is turned on. When the light reaches the light sensor and detects an illuminance equal to or higher than a predetermined brightness, the LED is turned off. Then, if the light sensor detects again the reduced illuminance due to the turn-off, the LED is turned on again, the light sensor detects the light, and the LED is turned off again. There is a risk of performing a so-called self-flashing operation in which the LED is repeatedly turned on and off.

In addition, for outdoor lighting such as road lights, with the mounting part of the lighting fixture attached to a column, etc., work to check whether the light sensor detection and the lighting control circuit by that detection operate normally I do.
The form of the lighting fixture is a form in which the LED substrate on which the LEDs are arranged is arranged facing the lower opening of the metal main body, and the lower opening of the main body is covered with a translucent cover so as to cover the LED and the LED substrate If the above work is performed in a daytime sky illuminance (external light illuminance) is high, even if the light sensor is covered with a light shielding member so that external light (ambient light) does not enter the light sensor, There is a possibility that the light passes through the translucent cover and enters the lighting fixture, reaches the optical sensor, malfunctions, and it cannot be confirmed whether the optical sensor and the lighting control circuit operate normally.

  The security light, which is one of the lighting fixtures, attaches the mounting portion of the lighting fixture to the support column etc. in order to irradiate the road surface etc. by light emission of the LED element. There exists what performs the light emission control of LED (patent document 1).

  An optical sensor (referred to as a light receiving sensor) of Patent Document 1 automatically flashes one end of a light shielding member 73 in an upper and lower cutout of an automatic flashing substrate 71 as shown in FIGS. When the board housing recess 73a is fitted and the other end of the light shielding member 73 is fitted into the groove 14a formed in the main body 1 and the lighting control device 6 is fixed to the main body 1, it is formed in the bottom 61 and the main body 1 of the automatic flashing switch. The automatic flashing substrate 71 is held by the substrate fixing slits 18 a to 18 d, and the light shielding member 73 is fixed to the main body 1.

The attachment of the optical sensor (referred to as a light receiving sensor) of Patent Document 1 to the main body 1 is assumed as follows. That is,
Since the automatic flashing substrate housing recess 73a at one end of the light blocking member 73 fits into the upper and lower cutouts of the automatic flashing substrate 71, in order to prevent light from entering from this portion, it is necessary to make a combination with no gap, By doing so, it is difficult to assemble and workability is poor.
In addition, since the other end of the light shielding member 73 is fitted into the groove 14a formed in the main body 1, in order to prevent light from entering from this portion, it is necessary to make a combination with no gap. It is difficult to assemble and workability is poor.
Further, as the lighting control device 6 is fixed to the main body 1, the automatic flashing substrate 71 is sandwiched and the light shielding member 73 is fixed to the main body 1, so that it is difficult to assemble and workability is poor.
Thus, in order to block unnecessary external light that enters the optical sensor (referred to as a light receiving sensor), the configuration of many parts is necessary and the assembly is complicated.

  Moreover, in a crime prevention light or a street light, an LED is provided as a light source for illumination, and even when the light generated by the LED affects detection by the optical sensor, the ambient brightness can be detected stably, In order to control the turn-off normally, the power supply voltage converter is controlled based on the detection value detected by the optical sensor and a preset threshold value, and is detected by the optical sensor after the LED is turned on. There is a method of correcting a detected value or a preset threshold value (Patent Document 2).

JP 2014-127247 A JP 2013-201010 A

In Patent Document 2, the complicated configuration as in Patent Document 1 is not necessary, and even if the light sensor detects the light emitted from its own LED, it will be possible to prevent the LED from being turned off.
However, an LED as a light source for illumination in a lighting fixture, a light sensor, a power supply unit that supplies power for the LED, a control unit that controls turning on and off of the LED based on the illuminance detected by the light sensor, There is no disclosure of technical relations in which noise countermeasures are taken for these to perform normal operation.

  The present invention provides a light-emitting element for illumination and a power supply unit that supplies power for the light-emitting element in a lighting fixture, and the light sensor is in a state of receiving both light from the light-emitting element and external light such as sunlight. A control unit is provided that controls lighting and extinguishing of the light emitting element based on the illuminance detected by the light sensor.

  In this case, an obstruction radio wave (hereinafter referred to as noise) that becomes unnecessary noise is generated with the operation of the power supply unit and / or the control unit, and this noise is wired from the optical sensor to the input unit of the control unit. If the signal is input to the control unit, the normal operation in the control unit may not be obtained.

  In view of this point, the present invention provides a lighting device in which the light sensor is arranged to receive both light from a light emitting element and external light such as sunlight, and the other as the light sensor, the control unit, and the lighting device. By providing the arrangement and wiring configuration of components including the above components, it is possible to suppress such noise disturbance, simplify the arrangement configuration of components, and provide a luminaire that can simplify the assembly of the luminaire. Is.

  The present invention may be a light emitting element that is a light source of a lighting fixture, not only an LED, but also a semiconductor light emitting element such as an organic EL (Electro Luminescence), an inorganic EL (Electro Luminescence), and a semiconductor laser.

The lighting apparatus of the first aspect of the present invention is:
Comprising a body having an interior space with an open bottom surface;
In the internal space,
A light source substrate in which a light emitting element for illumination is disposed on a lower surface; and a light sensor disposed on the lower surface of the light source substrate in a state of receiving both light of the light emitting element and external light such as sunlight; A circuit board on which a lighting control circuit unit that controls lighting and extinction of the light emitting element based on light reception of the light sensor is disposed, and
The lead wire through which the illuminance detection signal of the optical sensor is input to the lighting control circuit unit is wired over the proximity end portions of both the light source substrate and the circuit substrate,
It is characterized by that.

The lighting fixture of the second aspect of the present invention is:
Comprising a body having an interior space with an open bottom surface;
In the front area of the internal space, a light source substrate for illumination, and a light source substrate in which a light sensor that receives both light of the light emitting element and external light such as sunlight is disposed on a lower surface,
A circuit board including a control unit that controls lighting and extinction of the light emitting element based on reception of the light sensor, and a power supply unit that supplies the power for the light emitting element are disposed in a rear region of the internal space,
The light sensor is disposed closer to the rear of the light source substrate at a rear position than the light emitting element,
The lead wire through which the illuminance detection signal of the optical sensor is input to the control unit is wired across the rear part of the light source substrate and the front part of the circuit board,
It is characterized by that.

The lighting fixture of 3rd this invention is the said 2nd,
The power supply unit and the control unit are arranged on the circuit board,
It is characterized by that.

The lighting fixture of the fourth aspect of the present invention is
A main body having an inner space that opens to the lower side of the light-impermeable, a light source substrate attached to the main body along the opening, and an upper surface side of the light source substrate (contacting and separating from the substrate); A circuit board accommodated in the internal space in any case)
On the lower surface of the light source substrate, there are a plurality of light emitting elements for illumination arranged at predetermined intervals, and light of the light emitting elements and external light such as sunlight at a position in front of the light emitting elements. And an optical sensor in a state of receiving both,
On the circuit board, a power supply unit that supplies power for the light emitting element, and a control unit that controls lighting and extinction of the light emitting element based on light reception of the light sensor are arranged,
The lead wire through which the illuminance detection signal of the optical sensor is input to the control unit is wired over the front part of the light source substrate and the front part of the circuit board,
It is characterized by that.

A lighting fixture according to a fifth aspect of the present invention is any of the first to fourth aspects,
The circuit board has a circuit component disposed on a lower surface, and is housed in the internal space at a position behind the light source board and above the light source board.
The body has a translucent cover that can be opened and closed or removed so as to close the opening,
The light source substrate and the power supply substrate are arranged so that the translucent cover is opened below the main body through the opening in a state where the opening is opened.
It is characterized by that.

A lighting fixture according to a sixth aspect of the present invention is the above-described first to fifth aspect,
The lighting apparatus has a mounting portion to a column or the like at the rear part that is long in the front-rear direction,
The light source substrate has a plate shape long in the front-rear direction,
The light emitting elements are arranged in the front-rear direction on the light source substrate at a predetermined interval,
A translucent plate-like lens body in which a lens portion corresponding to each light emitting element and forming a predetermined light distribution and a sensor covering portion covering the photosensor are integrally formed;
The lens body is attached to the lower surface of the light source substrate in a superimposed state,
It is characterized by that.

The present invention is a lighting fixture in which a light sensor is arranged in a state of receiving both light of a light emitting element for lighting and external light around the lighting fixture, and other components as the light sensor, the control unit, and the lighting fixture. With the arrangement and wiring configuration of the parts including the above, it is possible to suppress the noise disturbance, simplify the arrangement configuration of the parts, and simplify the assembly of the lighting apparatus.
For this purpose, the lead wire through which the illuminance detection signal of the optical sensor is input to the control unit is configured to be wired over the adjacent end portions of both the light source substrate and the circuit substrate, and the light emitting element and the light are connected to the light source substrate. By arranging the sensor, it is easy to configure the optical sensor to detect the illuminance due to the light emission of the light emitting element and the illuminance due to the ambient light around the lighting fixture, and the illuminance detection signal of the optical sensor is input to the control unit. The lead wire is a short wiring, which is suitable for suppressing noise from entering the control unit on the wiring from the optical sensor to the input unit of the control unit.

  Further, in the present invention, when the light source substrate is arranged on the front side in the internal space of the main body and the circuit board is arranged on the rear side, the light sensor is positioned rearward of the light emitting element for illumination and closer to the rear part of the light source substrate. The lead wire that is placed and the light detection signal of the optical sensor is input to the control unit is a wiring that extends between the rear part of the light source substrate and the front part of the circuit board, so that the lead wire becomes a short wiring and noise is light. It is suitable for suppressing input to the control unit on the wiring from the sensor to the input unit of the control unit.

  In the present invention, when the circuit board is arranged on the upper side of the light source board, the optical sensor is arranged in front of the light emitting element arranged on the lower surface of the light source board, and the power supply unit and the control unit are arranged on the circuit board. Thus, it is not necessary to provide a separate optical sensor board, the arrangement of the optical sensor is facilitated, and the lead wire for inputting the illuminance detection signal of the optical sensor to the control unit is connected to the front part of the light source board and the circuit board. By wiring over the front part, it is suitable for suppressing malfunction of the control part due to noise.

  In the present invention, the light emitting element and the optical sensor are arranged on the lower surface of the light source substrate, and the lens body integrally includes a lens portion corresponding to the light emitting element and a portion covering the optical sensor, so that the optical sensor can be easily covered. It becomes. In particular, in a lighting fixture that does not include a light-transmitting cover and exposes the lens body, a configuration that protects the optical sensor from external force can be easily achieved.

It is a vertical side view of the lighting fixture which concerns on this invention. It is a disassembled perspective view of the lighting fixture which concerns on this invention. It is the perspective view seen from the state of the state which removed the translucent cover of the lighting fixture which concerns on this invention. It is the figure seen from the state of the state which removed the translucent cover of the lighting fixture which concerns on this invention. It is the perspective view seen from the back of the lighting fixture which concerns on this invention. It is a block diagram which concerns on operation | movement of the lighting fixture which concerns on this invention. It is a side view by the main body longitudinal section of the lighting fixture which concerns on this invention of 2nd Example. It is the figure seen from the state of the state which removed the translucent cover of the lighting fixture which concerns on this invention of 2nd Example. It is the figure seen from the back of the lighting fixture which concerns on this invention of 2nd Example.

The luminaire of the present invention includes a main body having an internal space whose lower surface is open, and a light source substrate in which a light emitting element for illumination is disposed on the lower surface, and a lower surface of the light source substrate. A circuit board on which a light sensor that receives the light of the light emitting element and external light around the lighting fixture and a lighting control circuit unit that controls lighting and extinguishing of the light emitting element based on light reception of the light sensor are arranged And a lead wire through which an illuminance detection signal of the optical sensor is input to the lighting control circuit unit is wired over the adjacent end portions of both the light source substrate and the circuit substrate.
Hereinafter, as an embodiment of the present invention, a light emitting element constituted by a plurality of LEDs will be described with reference to the drawings.

  The luminaire 1 of the present invention is used as a light for a sidewalk, a park, etc. as a typical structure, as a crime prevention light or a street light, and an LED as a light emitting element 2 for illumination inside. And a power supply unit 3 that supplies power for the light-emitting element 2, a light sensor 4 that is arranged to receive light from the light-emitting element 2 and illuminance caused by ambient light, and an illuminance detected by the light sensor 4. And a control unit 5 that controls turning on and off of the light emitting element 2.

  The luminaire 1 has a shape that is long in the front-rear direction, and includes a main body 6 having an inner space 6B in which an opening 6A is formed on the lower side and the lower side surface is open, and a translucent cover 7 that closes the opening 6A. The translucent cover 7 is detachably attached to the main body 6 with a screw N1 at the periphery of the opening 6A, or attached to a part of the main body 6 with a hinge so as to close the opening 6A. At the rear part of the luminaire 1, there is an attachment part 8 that extends rearward from the main body 6 and is attached to a column or the like.

  In the front region of the internal space 6B, a light source substrate 9 having a rectangular flat plate shape that is long before and after being attached to the boss of the main body 6 at the four corners by screws N2 along the opening 6A portion is provided. On the lower side surface of the light-emitting element 9, two rows of light-emitting elements 2 composed of six rows of LEDs are arranged in a bilaterally symmetrical manner with a predetermined interval in the front-rear direction. Further, a light sensor 4 is disposed on the lower surface of the light source substrate 9 with a space from the light emitting elements 2. In the illustrated example, the light sensor 4 is located behind the light emitting elements 2 and is disposed on the light source substrate 2. 9 is arranged at a predetermined distance from the light emitting element 2 at the rear part. Since the optical sensor 4 is not configured to block the light from the light emitting element 2, the optical sensor 4 detects the illuminance due to the light emission of the light emitting element 2 and the illuminance due to ambient light through the translucent cover 7. .

  As described above, the light sensor 4 is arranged on the lower surface of the light source substrate 9 with a space from the light emitting element 2, so that the light sensor 4 and the light emitting element 2 are arranged on separate substrates. The optical sensor 4 is configured to receive the light of the light emitting element 2 and ambient ambient light through the translucent cover 7, and the cost is reduced by simplifying the assembly of the lighting fixture 1 and reducing the number of parts. Suitable.

  In the rear region of the internal space 6B, a power supply unit 3 that supplies electric power for the light emitting element 2 and a control unit 5 that controls lighting and extinguishing of the light emitting element 2 based on light reception by the optical sensor 4 are arranged. The power supply unit 3 and the control unit 5 constitute a lighting control circuit unit. The power supply unit 3 and the control unit 5 are arranged such that electronic components 11 constituting them are electrically connected to wiring printed on one circuit board 10, and the circuit board 10 is screwed to a boss of the main body 6. Attached by N3. Compared with the case where the power supply unit 3 and the control unit 5 are arranged on separate substrates, the assembly of the lighting fixture 1 is simplified and the cost is reduced by reducing the number of components.

  As shown in FIG. 1 and the like, the circuit board 10 has an electronic component 11 disposed on the lower side, and corresponds to the opening 6A at a position behind the light source board 9 and at an upper position above the light source board 9. It is accommodated in the rear area of 6B. For this reason, the light source substrate 9 and the power supply substrate 10 are opened below the main body 6 through the opening 6A in a state where the translucent cover 7 opens the opening 6A.

The lower side of the circuit board 10 and the electronic component 11 is covered with a protective cover 12. The protective cover 12 is made of a metal plate or an opaque synthetic resin plate, and the protective cover 12 is attached to the boss of the main body 6 with screws N4. This has the effect of preventing electric shock due to the operator touching the circuit board 10 and the electronic component 11 and preventing the circuit board 10 and the electronic component 11 from being seen from the outside through the translucent cover 3.
In addition, by covering the circuit board 10 with an electrical insulating sheet, the electronic component 11 of the circuit board 10 can be protected from a surge voltage caused by lightning.

The lens body 13 is attached to the lower surface of the light source substrate 9 so as to be superposed on the boss of the main body 6 with screws N5. The lens body 13 is a light-transmitting plate shape in which a lens portion 13A that forms a predetermined light distribution corresponding to each light emitting element 2 is integrally formed with a rectangular flat plate-like substrate portion 13B that is long in the front and rear direction.
In addition, as shown in FIG. 3, the optical sensor 4 can be protected from external force by integrally forming a sensor covering portion 13C that covers the optical sensor 4 by extending the flat substrate portion 13B rearward.

  A waterproof elastic sealing material 14 is fitted into a wiring hole 6F formed in a portion between the left and right mounting portions 8 formed on the rear wall of the main body 6 and penetrates through the elastic sealing material 14 to supply a commercial power line. 15 is wired. When the connector 16 at the tip of the commercial power line 15 is connected to the connector 17 attached to the circuit board 10, power is supplied to the power supply unit 3.

The power supply unit 3 includes an A / D circuit 18 that converts AC power supplied from the commercial power line 15 into DC power, and a lighting power supply unit 19 that converts this DC power into intermittent pulse power supplied to the light emitting element 2. And a constant voltage circuit 20 for supplying the DC power to the optical sensor circuit 21 and the control unit 5. FIG. 6 shows the constant voltage circuit 20 separately for the explanation of the circuit operation. As a result, the light emitting element 2 is intermittently turned on (intermittent pulse of the intermittent pulse) by the high level period of the intermittent pulse of the rectangular waveform in which the high level and the low level output from the lighting power supply unit 19 are alternately repeated. It is configured to light up in a high level period).
The frequency of this pulse is such a frequency that a person who sees the light emitting element 2 does not feel flickering, and may be an integer multiple of 50 Hz or 60 Hz, in order to make it easy to generate in a circuit. It is preferable to use 1 KHz to 2 KHz because it is pointed out that there is a possibility of feeling bad from the relationship of the human visual nerve.

  The direct current of the A / D circuit 18 is supplied to the optical sensor circuit 21 and the control unit 5 through the constant voltage circuit 20. The control unit 5 is a microcomputer control system, and includes a necessary memory for storing an operation program, reference information, input information, output information, and the like, a comparison operation unit, and the like, and an input information input unit 5P. The optical sensor circuit 21 is controlled by the control unit 5 and supplies illuminance information (illuminance detection signal) based on detection by the optical sensor 4 to the input unit 5P of the control unit 5 as input information. For this reason, the optical sensor circuit 21 constitutes a part of the control unit 5, and the lighting control circuit unit is configured by the control unit 5 including the optical sensor circuit 21 and the power supply unit 3. FIG. 6 shows the optical sensor circuit 21 separately for the explanation of the circuit operation.

The connector 28 at the tip of the lead wire 27 connected to the output side of the lighting power supply unit 19 with the connector 29 is connected to the connector 30 connected to the light emitting element 2. The connector 30 is provided on the rear portion of the light source substrate 9 at a position behind the optical sensor 4.
The connector 33 at the tip of the lead wire 32 connected to the input side of the optical sensor circuit 21 with the connector 31 is connected to the connector 34 connected to the optical sensor 4. The connector 34 is provided in the rear region of the light source substrate 9 at a position behind the optical sensor 4 and is arranged side by side with the connector 30.

Since noise generated from the control unit 5 and the power supply unit 3 rides on the lead wire 32 and enters the optical sensor circuit 21, there is a possibility that the operation of the control unit 5 may be disturbed. It is preferable to use a short wiring so that the length of the line 32 is the shortest distance or close to it.
In order to achieve this, the lead wire 32 for inputting the illuminance detection signal of the optical sensor 4 to the control unit 5 is a wiring extending between the adjacent end portions of both the light source substrate 9 and the circuit substrate 10.

That is, the rear end portion of the light source substrate 9 and the front end portion of the circuit board 10 exist as the adjacent end portions of the light source substrate 9 and the circuit board 10 arranged in the front and rear in the internal space 6B. A connector 34 connected to the optical sensor 4 is provided in the vicinity of the rear end of the light source board 9, and a connector 31 connected to the input side of the optical sensor circuit 21 is provided in the vicinity of the front end of the circuit board 10. In this case, the optical sensor circuit 21 is preferably arranged in the vicinity of the front end portion of the circuit board 10.
With this configuration, the lead wire 32 extending over the light source substrate 9 and the circuit board 10 corresponds to the wiring extending to the adjacent end portions of both the light source substrate 9 and the circuit substrate 10, so the length of the lead wire 32 is short. Become. For this reason, the range of picking up the noise by the lead wire 32 is reduced, which is preferable. In the drawing, the lead wire 32 is bent in a crank shape, but in order to shorten it, a substantially straight wiring is preferable.

Since the optical sensor 4 is configured to receive both the light from the light-emitting element 2 and the external light around the lighting fixture 1, the light-emitting element 2 is lit to enable accurate detection by the optical sensor 4. Even in the mode, only the ambient light around the luminaire 1 is detected.
For this reason, the method of controlling lighting and extinguishing of the light emitting element 2 based on the illuminance detected by the optical sensor 4 is output from the lighting power supply unit 19 when the light emitting element 2 is in the night lighting mode as described above. The light emitting element 2 is intermittently turned on (lights up in the high level period of the intermittent pulse) according to the high level period of the intermittent pulse.

The frequency of the intermittent pulse is high enough that the human eye does not feel flicker. The intermittent pulse is turned on at 100% light emission during the high level period, and 0% light is emitted (lights off at the low level period of the intermittent pulse). ).
The illuminance detected by the optical sensor 4 is controlled by the control unit 5 so as to be the illuminance detected during the low level period of the intermittent pulse.

  Installation of the luminaire 1 is completed, all wiring is completed, AC power is supplied from the commercial power supply line 15 through the connected connector 16 and connector 17, and the luminaire 1 enters a normal state in which it operates normally. In this state, when the daytime is bright, sunlight light, which is outside light of the lighting fixture 1, is detected by the optical sensor 4, and the illuminance detected by the optical sensor 4 is large. The illuminance information based on this is larger than the turn-off threshold set in the control unit 5. For this reason, the control unit 5 performs control so that the lighting power supply unit 19 does not output a lighting output to the light emitting element 2, and the light emitting element 2 is in the extinguishing mode.

As the time elapses, the illuminance information based on the illuminance detected by the optical sensor 4 becomes smaller or smaller than the lighting threshold set in the control unit 5, so that the control unit 5 causes the lighting power supply unit 19 to emit light. 2 is controlled to output a lighting output to 2, and the light emitting element 2 is in a lighting mode. The lighting illuminance detected by the light sensor 4 at this time is, for example, 30 lux.
In this lighting mode, the light emitting element 2 is intermittently turned on by the intermittent pulse output from the lighting power supply unit 19 (lights up in the high level period of the intermittent pulse). The frequency of the intermittent pulse is 100 Hz or more where the person who sees the light emitting element 2 does not feel flicker, and is 1 KHz to 2 KHz in the embodiment.

In the night lighting mode, the optical sensor 4 detects the illuminance during the extinguishing period of the light emitting element 2 (detected in a low level period which is an intermittent interval of intermittent pulses). This intermittent section is a light-off section of the light emitting element 2. In this light-off section, the sun sets and the illuminance detected by the light sensor 4 is extremely low and is sufficiently smaller than the light-off threshold set in the control section 5. 5 maintains a control state in which the lighting power supply unit 19 outputs a lighting output to the light emitting element 2.
In this way, at night when the light emitting element 2 is in the lighting mode, the optical sensor 4 detects the illuminance of external light during the extinguishing period of the light emitting element 2, but at night the detected illuminance of sunlight is almost zero. Since the lighting illuminance of the light emitting element 2 is not substantially detected, the illuminance detected by the optical sensor 4 is sufficiently smaller than the turn-off threshold, and the control unit 5 controls the lighting power supply unit 19 to output a lighting output to the light emitting element 2. The state is maintained, and the light emitting element 2 continues the intended lighting mode at night.

  When dawn occurs with the passage of time, the ambient light around the luminaire 1 increases, and the detection illuminance of the optical sensor 4 detected in the intermittent section of the intermittent pulse increases. The illuminance information detected by the optical sensor 4 in the intermittent section of the intermittent pulse is compared with the extinction threshold set in the control unit 5, and the illuminance information based on the illuminance detected by the optical sensor 4 is compared with the extinction threshold set in the control unit 5. Is larger or larger, the control unit 5 controls the lighting power supply unit 19 so that the light emitting element 2 is set in the extinguishing mode, and the light emitting element 2 is turned off. The illumination illuminance detected by the optical sensor 4 at this time is higher than the illumination illuminance detected by the optical sensor 4, for example, 120 lux.

Again at night, the light-emitting element 2 enters the lighting mode in the same manner as described above.
As described above, even when the light emitting element 2 is in the lighting mode, the light sensor 4 detects light in the minus period, which is an intermittent interval of the intermittent pulse, so that the illuminance when the light emitting element 2 is turned off is detected. There is no need to provide a special shielding structure for shielding the sensor 4 from external light.

7 to 9 show a second embodiment.
The difference between the second embodiment and the first embodiment will be described below. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description of the first embodiment is used.

  In the second embodiment, a flat plate-like metal that is disposed along the opening 6A portion of the main body 6 and is attached to the mounting boss formed on the main body 6 with the screw N6 in contact with the peripheral edge of the opening 6A. A mounting plate 50 is provided. Corresponding to the front region of the internal space 6B of the main body 6, the mounting plate 50 is used as a heat radiating plate on the lower surface of the mounting plate 50, and the lower surface of the light source substrate 9 is a lens having the same plane area as the light source substrate 9. In a state where the body 13 is overlapped, it is attached to the attachment plate 50 with a screw N7. As a result, heat generated by the light emitting element 2 is transmitted to the mounting plate 50 through the light source substrate 9, transmitted from the mounting plate 50 to the main body 6, and dissipated from the main body 6. For this reason, the mounting plate 50 acts as a heat sink.

  Further, a support portion 51 formed by cutting and raising a part of the attachment plate 50 is raised on the upper surface of the attachment plate 50 corresponding to the rear region of the internal space 6B of the main body 6, and a circuit board is formed on the support portion 51. 10 is attached by a screw N8. As a result, the circuit board 10 is arranged in the rear region of the internal space 6B in a parallel state with a space on the upper side surface of the mounting plate 50. As a result, an earth line of the circuit board 10 is formed through the support portion 51. For the certainty of the earth line formation, one end of the earth line 53 that connects the circuit board 10, the mounting plate 50, and the main body 6 is formed at one end. It is attached by a rear screw N6, and the other end is connected to the ground line of the circuit board 10.

  The connector 30 disposed on the lower surface in the vicinity of the front end of the light source substrate 9 passes through the hole in the flat substrate portion 13B of the lens body 13 and is covered with a cover portion 13B1 formed on the substrate portion 13B correspondingly. Is called. In addition, the connector 34 disposed on the lower surface in the vicinity of the rear end of the light source substrate 9 passes through a hole in the flat substrate portion 13B of the lens body 13, and a cover portion 13B2 formed on the substrate portion 13B correspondingly. Covered.

Also in the configuration of the second embodiment, the lead wire 32 for inputting the illuminance detection signal of the optical sensor 4 to the control unit 5 is a wiring extending between the adjacent end portions of both the light source substrate 9 and the circuit substrate 10. That is, the rear end portion of the light source substrate 9 and the front end portion of the circuit board 10 exist as the adjacent end portions of the light source substrate 9 and the circuit board 10 arranged in the front and rear in the internal space 6B. A connector 34 connected to the optical sensor 4 is provided in the vicinity of the rear end of the light source board 9, and a connector 31 connected to the input side of the optical sensor circuit 21 is provided in the vicinity of the front end of the circuit board 10. In this case, the optical sensor circuit 21 is preferably arranged in the vicinity of the front end portion of the circuit board 10.
The connector 30 is connected to the connector 30, the connector 33 at one end of the lead wire 32 is connected to the connector 34, and the connector 31 at the other end of the lead wire 32 is connected to the input side of the optical sensor circuit 21 in the vicinity of the front end of the circuit board 10. A line for connecting the illumination detection signal of the optical sensor 4 to the control unit 5 is formed.
As a result, the length of the lead wire 32 extending from the control unit 5 of the circuit board 10 to the light source substrate 9 is shortened, and the range of picking up the noise by the lead wire 32 is reduced, which is preferable. In the figure, the lead wire 32 is bent, but in order to shorten it, a substantially straight wiring is preferable.

  Moreover, the storage battery 60 used for the power failure for the power failure of the commercial power supply line 15 is provided. The storage battery 60 is attached to the rear region of the internal space 6 </ b> B of the main body 6, and the position thereof is above the circuit board 10.

The control unit 5 adopts a control system that stably maintains the lighting state without immediately turning off the light emitting element 2 even if the AC power supplied from the commercial power line 15 is temporarily interrupted.
For this reason, the control part 5 is provided with the control means which detects the power failure of commercial power, and controls so that the light emitting element 2 operate | moves with the electric power of the storage battery 60 at the time of a power failure. The storage battery 60 is wired through a charging circuit (not shown) so as to be charged by the AC power of the commercial power supply line 15, and the storage battery 60 is connected to the lighting power supply unit of the power supply unit 3 through the constant voltage circuit 61. 19, and supplied to the optical sensor circuit 21 and the control unit 5.

The operation using the storage battery 60 as a power source is the same as that of the first embodiment in the case of a commercial power source.
In addition, electrical insulation between the electronic component 11 of the circuit board 10 and the mounting plate 50 is achieved by disposing an electrical insulating sheet between the mounting plate 50 and the circuit board 10. Moreover, the electrical insulation between the storage battery 60 and the circuit board 10 is achieved by disposing an electrical insulation sheet between the storage battery 60 and the circuit board 10.

For example, the lighting fixture 1 may be arranged such that the circuit board 10 according to the second embodiment is located above the light source board 9. As one of them, a part of the mounting plate 50 is cut and raised in the same manner as the support portion 51, and the circuit board 10 is attached to this with a screw, and the storage battery 60 is placed in the rear region of the internal space 6B of the main body 6. And is configured to perform the same operation as in the first embodiment.
Also in this case, the lead wire 32 for inputting the illuminance detection signal of the optical sensor 4 to the control unit 5 is a wiring extending between the adjacent end portions of both the light source substrate 9 and the circuit substrate 10, so that the lead wire The range of picking up the noise by 32 can be reduced.

  For this reason, in the lighting fixture 1 in which the circuit board 10 is arranged above the light source board 9 in this way, a plurality of light emitting elements 2 arranged at predetermined intervals on the lower surface of the light source board 9. And an optical sensor that is located in front of the light emitting element 2 and detects both the illuminance due to external light and the illuminance due to light emission of the light emitting element. A power supply unit 3 and a control unit 5 are arranged on the circuit board 10.

  In this case, in order to reduce the range of picking up the noise by the lead wire 32, the optical sensor 4 connector 34 on the light source substrate 9 side is disposed in the front portion of the light source substrate 9 in the vicinity of the optical sensor 4, and the controller 5 The side connector 31 is disposed in the front portion of the circuit board 10. The optical sensor circuit 21 is preferably disposed in the vicinity of the front end portion of the circuit board 10. The connector 33 at the tip of the lead wire 32 is connected to the connector 34 so that the lead wire 32 is wired over the front portion of the light source substrate 9 and the front portion of the circuit board 10. Thereby, the lead wire 32 wired from the control unit 5 of the circuit board 10 to the light source substrate 9 is shortened, and the range of picking up the noise by the lead wire 32 is reduced, which is preferable.

  In the lighting fixture 1 in which the circuit board 10 is disposed above the light source substrate 9, a plurality of light emitting elements 2 disposed at predetermined intervals on the lower surface of the light source substrate 9, and the light emitting elements And an optical sensor that detects both the illuminance caused by external light and the illuminance caused by light emission of the light emitting element. The light emitting element 2 connector 30 may be arranged on either the front side or the rear side of the light emitting element 2 of the light source substrate 9. A power supply unit 3 and a control unit 5 are arranged on the circuit board 10.

  In this case, in order to reduce the range of picking up the noise by the lead wire 32, the optical sensor 4 connector 34 on the light source substrate 9 side is connected to the rear end of the light source substrate 9 near the optical sensor 4 as in FIG. The connector 31 on the control unit 5 side is disposed in the rear portion of the circuit board 10. The optical sensor circuit 21 is preferably arranged in the vicinity of the rear end portion of the circuit board 10. Then, the connector 33 at the tip of the lead wire 32 is connected to the connector 34 so that the lead wire 32 is wired over the rear portion of the light source substrate 9 and the rear portion of the circuit board 10. Thereby, the lead wire 32 wired from the control unit 5 of the circuit board 10 to the light source substrate 9 is shortened, and the range of picking up the noise by the lead wire 32 is reduced, which is preferable.

  In addition, an electrical insulation sheet is disposed between the light source substrate 9 and the circuit substrate 10 to achieve electrical insulation between the light source substrate 9 and the circuit substrate 10. Further, by covering the circuit board 10 with an electrical insulating sheet, the electronic component 11 of the circuit board 10 can be protected from a surge voltage caused by lightning.

Moreover, as a structure of the lighting fixture 1, the translucent cover 7 in the form of Example 1 and Example 2 may not be provided, but the lens body 13 covering the lower side of the light source substrate 9 may be in an exposed state. .
For example, with respect to Example 1, the light source substrate 9 and the lens body 13 are overlapped in a watertight state on the peripheral portion via an annular packing, and this polymer passes through the peripheral portion of the opening 6A on the lower side of the main body 6 via the packing. It is assumed that it is attached in a watertight state with screws. Further, the protective cover 12 is connected to the polymer in a watertight state, and is attached to the peripheral edge of the opening 6A on the lower side of the main body 6 with a screw in a watertight state via a packing. The operation may be as follows.

    The present invention includes various forms without departing from the spirit of the present invention, regardless of the above embodiment.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Light emitting element 3 Power supply part 4 Optical sensor 5 Control part 6 Main body 6B Internal space 7 Translucent cover 8 Mounting part 9 Light source board 10 Circuit board 11 Electronic component 13 Lens body 15 Commercial power supply line 19 Lighting power supply part 21 Optical sensor circuit 32 Lead wire 34 Connector

Claims (6)

Comprising a body having an interior space with an open bottom surface;
In the internal space,
A light source substrate in which a light emitting element for illumination is disposed on a lower surface; and a light sensor disposed on the lower surface of the light source substrate in a state of receiving both light of the light emitting element and external light such as sunlight; A circuit board on which a lighting control circuit unit that controls lighting and extinction of the light emitting element based on light reception of the light sensor is disposed, and
The lead wire through which the illuminance detection signal of the optical sensor is input to the lighting control circuit unit is wired over the proximity end portions of both the light source substrate and the circuit substrate,
A lighting apparatus characterized by that. Comprising a body having an interior space with an open bottom surface;
In the front area of the internal space, a light source substrate for illumination, and a light source substrate in which a light sensor that receives both light of the light emitting element and external light such as sunlight is disposed on a lower surface,
A circuit board including a control unit that controls lighting and extinction of the light emitting element based on reception of the light sensor, and a power supply unit that supplies the power for the light emitting element are disposed in a rear region of the internal space,
The light sensor is disposed closer to the rear of the light source substrate at a rear position than the light emitting element,
The lead wire through which the illuminance detection signal of the optical sensor is input to the control unit is wired across the rear part of the light source substrate and the front part of the circuit board,
A lighting apparatus characterized by that. The power supply unit and the control unit are arranged on the circuit board,
The lighting fixture according to claim 2. A main body having an inner space that opens to the lower side of the light-impermeable, a light source substrate attached to the main body along the opening, and an upper surface side of the light source substrate (contacting and separating from the substrate); A circuit board accommodated in the internal space in any case)
On the lower surface of the light source substrate, there are a plurality of light emitting elements for illumination arranged at predetermined intervals, and light of the light emitting elements and external light such as sunlight at a position in front of the light emitting elements. And an optical sensor in a state of receiving both,
On the circuit board, a power supply unit that supplies power for the light emitting element, and a control unit that controls lighting and extinction of the light emitting element based on light reception of the light sensor are arranged,
The lead wire through which the illuminance detection signal of the optical sensor is input to the control unit is wired over the front part of the light source substrate and the front part of the circuit board,
A lighting apparatus characterized by that. The circuit board has a circuit component disposed on a lower surface, and is housed in the internal space at a position behind the light source board and above the light source board.
The body has a translucent cover that can be opened and closed or removed so as to close the opening,
The light source substrate and the power supply substrate are arranged so that the translucent cover is opened below the main body through the opening in a state where the opening is opened.
The lighting fixture according to any one of claims 1 to 4, wherein The lighting apparatus has a mounting portion to a column or the like at the rear part that is long in the front-rear direction,
The light source substrate has a plate shape long in the front-rear direction,
The light emitting elements are arranged in the front-rear direction on the light source substrate at a predetermined interval,
A translucent plate-like lens body in which a lens portion corresponding to each light emitting element and forming a predetermined light distribution and a sensor covering portion covering the photosensor are integrally formed;
The lens body is attached to the lower surface of the light source substrate in a superimposed state,
The lighting fixture according to any one of claims 1 to 5, wherein