JP2018129147A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture, such as a road lamp, having a structure capable of preventing lighting of an illuminance sensor from being interrupted by a spiderweb formed on an outer surface of the lighting fixture, or snow or fallen leaves falling on the lighting fixture, and suitable for external light detection around the lighting fixture with the illuminance sensor.SOLUTION: A lighting fixture includes: an attachment part projecting at the rear of the lighting fixture; a light source for illumination configured to emit light toward a required place; an illuminance sensor configured to detect external light around the lighting fixture; and a control unit configured to control light emission of the light source for illumination, based on detection of the illuminance sensor. A light collection unit configured to collect the external light to the illuminance sensor faces the rear of the lighting fixture, and at least a part of the light collection unit is positioned above the attachment part, in a side view of the lighting fixture.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a luminaire that performs lighting control of a light source by detecting ambient brightness with an illuminance sensor.

  For outdoor lighting devices such as road lights, the illuminance sensor provided in the illuminating device detects the light / dark illuminance of the ambient light around the illuminating device with the mounting portion provided at the rear of the illuminating device attached to the column. Thus, there is one that controls whether the power supply circuit turns on or off the light emitting element that is the light source of the lighting device (see Patent Document 1).

  In Patent Document 1, external light entering the brightness sensor 65 passes through a translucent sensor cover 17 such as silicon rubber inserted in a daylighting opening 15 formed in the top surface 13D of the support body 13. It is detected by the sensor 65.

JP 2016-024954 A

As described above, in Patent Document 1, the mounting bracket 14 to the column 6 is composed of two plate-like members 14A and 14B, and the translucent sensor cover 17 is formed on the top surface 13D of the support body 13. Is inserted into the daylighting aperture 15 and is buried between the two plate-like members 14A and 14B.
For this reason, the sensor cover 17 may be buried in falling snow, the sensor cover 17 may be blocked by fallen leaves flying from around the lighting apparatus, and the two plate-like members 14A and 14B. There is a risk of being blocked by a spider's web in between.
In such a situation, there is a concern that the normal illuminance detection function of the brightness sensor 65 is impaired, and the normal lighting / extinguishing control of the light emitting element cannot be performed.

  Moreover, since the sensor cover 17 exists in the top | upper surface 13D of the thing of patent document 1, it is easy to be found by birds, the sensor cover 17 is easy to be damaged by birds, and the rain water which penetrate | invaded from this damaged sensor cover 17 at the time of raining There is a concern that the brightness sensor 65 adheres to the surface or rainwater accumulates, the normal illuminance detection function of the brightness sensor 65 is impaired, and the normal lighting / extinguishing control of the light emitting element cannot be performed. In addition, when the sensor cover 17 is damaged, rainwater that has entered the lighting fixture adheres to the electric circuit, causing a failure of the electric circuit.

  Further, in Patent Document 1, since the sensor cover 17 is present on the top surface 13D of the support body 13, dust tends to accumulate on the upper surface, and the light transmission performance is reduced by the dust, and the brightness of the end of the phrase is bright. There is a concern that the normal illuminance detection function of the sensor 65 is impaired, and the normal lighting / extinguishing control of the light emitting element cannot be performed, and it is one problem to solve these points.

  In view of such a point, the present invention relates to a lighting fixture such as a road lamp installed outdoors, and in a form in which a mounting portion for attaching the lighting fixture to a utility pole, a pole, or the like is provided to project rearward of the lighting fixture, Provided is a luminaire suitable for detecting ambient light around the luminaire using the illuminance sensor, which is configured such that the light from the illuminance sensor is not easily blocked by a spider web formed on the outer surface, snow or falling leaves falling on the luminaire.

  Further, in order to solve the above problems, the present invention provides a lighting unit for the illuminance sensor in a form in which an attachment part for attaching the lighting apparatus to a utility pole, a pole, or the like is provided to protrude rearward of the lighting apparatus. When it arrange | positions to a rear wall, the technique by which size reduction of a lighting fixture is hard to be restrict | limited by arrangement | positioning of this lighting part is provided.

  For this reason, the present invention provides a lighting unit for the illuminance sensor in an upper region surrounded by the mounting portion in a form provided to project rearward of the lighting fixture, and the lighting unit is a side surface of the lighting fixture. In view, at least a part of the mounting portion is positioned above the mounting portion.

  In addition, the present invention includes a left and right mounting part projecting rearward on the outer surface of the rear wall of the lighting fixture, and a lighting unit for the illuminance sensor is disposed in an upper region surrounded by the left and right mounting parts. The part is arranged such that at least a part thereof is positioned above the left and right attachment part in a side view of the lighting apparatus.

The lighting apparatus of the first aspect of the present invention is:
An illumination light source that emits light toward a required location, an illuminance sensor that detects external light around the luminaire, and the detection of the illuminance sensor; A control unit for controlling the light emission of the illumination light source;
The daylighting unit that takes the outside light into the illuminance sensor faces the rear of the lighting fixture, and at least a part of the lighting unit is located above the mounting portion in a side view of the lighting fixture.
It is characterized by that.

The lighting fixture of the second aspect of the present invention is:
An illumination light source that emits light toward a required location, an illuminance sensor that detects external light around the luminaire, and the detection of the illuminance sensor; A control unit for controlling the light emission of the illumination light source;
The daylighting unit that takes the outside light into the illuminance sensor is located at least partially above the attachment unit in a side view of the lighting fixture, and a central lighting axis is directed obliquely upward and rearward of the lighting fixture,
It is characterized by that.

The lighting apparatus of the third invention is
In the first or second,
In the upper area near the attachment portion, the daylighting portion is in a direction in which the central daylighting axis of the external light reaching the illuminance sensor through the daylighting portion 26 is separated rearward and upward from the attachment portion as it goes rearward.
It is characterized by that.

The lighting fixture of the fourth aspect of the present invention is
In any one of the first to third aspects,
The mounting portion is composed of left and right plate-shaped mounting portions extending in parallel rearward from the lighting fixture,
The daylighting portion is disposed between upper end portions of the left and right plate-shaped attachment portions,
It is characterized by that.

The lighting apparatus of the fifth aspect of the present invention is
In any one of the first to fourth aspects,
The daylighting portion is made of a translucent member, and has an insertion portion that is inserted into a daylighting hole formed through the rear wall of the lighting fixture, the upper portion of which is inclined obliquely forward, and a size that blocks the daylighting hole. And a head abutting against the outer wall of the rear wall of the lighting fixture,
A cylindrical light shielding cover that is in close contact with the insertion portion and blocks light other than external light taken from the daylighting portion,
It is characterized by that.

A lighting fixture according to a sixth aspect of the present invention is the lighting device according to any one of the first to fourth aspects,
A sensor substrate on which the illuminance sensor is disposed;
A light emitting unit substrate in which the illumination light source is disposed on a lower surface;
A control board on which the control unit is disposed,
The lighting fixture has an internal space and is long in the front-rear direction,
Among the internal spaces, the light emitting unit substrate is disposed in a front space, and the control substrate is disposed in a rear space,
The sensor board has the illuminance sensor facing the daylighting unit, and is arranged vertically along the rear wall inner surface of the lighting fixture at a position behind the control board.
It is characterized by that.

  The lighting fixture of the present invention includes a mounting portion that protrudes rearward of the lighting fixture, and the lighting unit for the illuminance sensor that detects the ambient light around the lighting fixture faces the rear of the lighting fixture, and is a side view of the lighting fixture. , At least a portion is located above the attachment portion. For this reason, it is difficult for the daylighting part to be blocked by snow or falling leaves falling on the lighting fixture, and even if a spider's web is formed in the attachment part, external light can be taken in from the part of the daylighting part located above the attachment part Thus, external light detection failure by the illuminance sensor is less likely to occur.

  The lighting fixture of the present invention is configured such that the daylighting portion to the illuminance sensor has a central lighting axis that faces obliquely upward and rearward of the lighting fixture, and further, a direction that leaves the mounting diagonally rearward and upward as the central lighting axis moves backward. With this arrangement, the same effects as described above can be obtained, and the attachment portion does not interfere with the detection of external light by the illuminance sensor.

  The luminaire of the present invention is composed of left and right plate-like attachment portions extending in parallel from the luminaire to the rear, and the daylighting portion is arranged between the upper ends of the left and right plate-like attachment portions, The same effect as described above is achieved.

In the lighting fixture of the present invention, the daylighting portion is made of a translucent member, and has an insertion portion that is inserted into the daylighting hole formed through the rear tilted wall of the lighting fixture and a size that blocks the daylighting hole. And a cylindrical light-shielding cover that has a head portion that comes into contact with the outer surface of the rear wall of the lighting fixture, and that is in close contact with the insertion portion and blocks light other than external light taken from the daylighting portion.
Thereby, the illuminance sensor can sense only the outside light taken in from the daylighting unit, and a stable detection operation can be obtained.

In the lighting fixture of the present invention, the light emitting unit substrate is disposed in the front space of the internal space, the control substrate is disposed in the rear space, the illuminance sensor faces the lighting unit, and the sensor substrate is behind the control substrate. In the position, it is vertically oriented along the inner surface of the rear wall of the luminaire.
Accordingly, the sensor board is not restricted by the mounting of the control board, and the illuminance sensor can be easily arranged in a state of facing the daylighting unit, which is suitable for the arrangement in which the daylighting unit faces obliquely upward and rearward of the lighting fixture. .

It is a disassembled perspective view of the lighting fixture which concerns on this invention. It is a principal part vertical side view of the lighting fixture which concerns on this invention. It is the figure which looked at the main body from the bottom in the state where the translucent cover of the lighting fixture concerning the present invention was removed. It is the figure which looked at the lighting fixture which concerns on this invention from the downward direction. It is the figure which looked at the lighting fixture which concerns on this invention from back. It is the perspective view which looked at the lighting fixture which concerns on this invention from back. It is a side view of the state which attached the lighting fixture concerning this invention to the support | pillar. It is AA sectional drawing of FIG. It is DD sectional drawing of FIG. It is a bottom view of the drain hole of the lighting fixture which concerns on this invention. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG.

The lighting fixture of the present invention includes a mounting portion that protrudes rearward of the lighting fixture, and includes an illumination light source that emits light toward a required location, an illuminance sensor that detects external light around the lighting fixture, A control unit that controls light emission of the light source for illumination based on detection of the illuminance sensor, and the daylighting unit for the illuminance sensor faces rearward of the luminaire, and at least a part of the luminaire in a side view It is the structure located above the said attachment part.
Hereinafter, as an embodiment of the present invention, a lighting fixture 1 in which two rows of LED elements (light-emitting diodes) 7 that are illumination light sources 7 that emit light toward a required location are arranged will be described with reference to the drawings.

The luminaire 1 according to the present invention distributes the light emitted from the LED element 7 serving as a light source for illumination to a region surrounded by the peripheral edge of the opening 2A on the lower surface side of the light-impermeable main body 2 with a predetermined light distribution. The light emitting part 6 which radiates | emits is attached, and it is a lighting fixture by which the emitted light of the LED element 7 is distributed in the road direction.
As one form thereof, as shown in FIGS. 1 to 9, the luminaire 1 has a translucent cover 3 combined with the main body 2 so as to close the opening 2 </ b> A, and is long in the front-rear direction. The light emitting unit 6 is arranged along 2A. The main body 2 is composed of a non-translucent material having good heat conduction, such as a metal having an opening 2A formed so that substantially the entire bottom surface is opened and a thermally conductive coating having a rust-preventing effect on both the inner and outer surfaces. The translucent cover 3 made of synthetic resin is combined with the peripheral edge of the opening 2A so as to close the opening 2A of the main body 2.

  The main body 2 is die-cast using aluminum as a material, and has an inner space 4 that is long in the front-rear direction, surrounded by an upper wall 2T and a peripheral wall 2S descending from the upper wall 2T, and bulging upward. An opening 2A that is surrounded by the wall 2S and opens to the lower side is formed, and a mounting portion 10 to the column PL or the like is provided at the rear. The translucent cover 3 has a form that bulges downward, and an annular flange 3F that protrudes upward is formed at the peripheral edge of the upper end. An annular flange 2F protruding downward is formed so as to go around the peripheral edge of the opening 2A of the main body 2. The peripheral edge of the opening 2A has a groove 2M into which the flange 3F of the translucent cover 3 is fitted inside the flange 2F.

  As shown in FIG. 2, in a state where the translucent cover 3 is combined with the opening 2A of the main body 2 so that the flange 3F fits into the groove 2M, the four corners are penetrated into the peripheral edge of the opening 2A with screws NJ. The light cover 3 is fixed. Due to the concavo-convex configuration that fits like the groove 2M and the flange 3F, a waterproof structure is formed between the main body 2 and the translucent cover 3. In addition, a more preferable waterproof effect is acquired by the structure which accommodates packing in the upper bottom of the groove | channel 2M, and this packing is compressed by the flange 3F.

  As shown in FIG. 1 etc., the light emission part 6 is a part which irradiates the light which the light which the LED element 7 radiates | emits toward a required location by predetermined light distribution, and LED element 7 and LED element on a lower surface And a light distribution unit 8 that is combined with the lower surface of the light emitting unit substrate 5 so as to cover the LED element 7 and emits light emitted from the LED element 7 with a predetermined light distribution. Prepare.

  The electrically insulating light-emitting part substrate 5 has a plurality of LED elements 7 constituting the light-emitting part 6 mounted on the lower surface, and an electric path to the LED element 7 is formed on the same lower surface as a printed wiring. Covering. A light distribution unit 8 is disposed on the lower surface of the light emitting unit substrate 5 so as to overlap the light emitting unit substrate 5.

  As shown in FIG. 1 and the like, the main body 2 includes, in the front space 4A of the internal space 4, a plurality of heat conductive ribs 11 extending in parallel in the front-rear direction that supports the upper surface of the light emitting unit substrate 5, and the light emitting unit substrate. Mounting bosses 13 and 13A for attaching the light emitting unit substrate 5 through holes 5P formed at positions not connected to the printed wiring at the four corners 5 are integrally formed on the main body 2 so as to hang down from the upper wall 2T. Yes. The mounting bosses 13 and 13A are respectively arranged at diagonal positions. The mounting boss 13A has a length for supporting the light emitting unit substrate 5 with the boss formed at the tip fitted in the hole 5P. This is the length for attaching the light emitting unit substrate 5 with the screw 9 through 5P.

The pair of mounting bosses 13 and the pair of mounting bosses 13A are arranged at diagonal positions, and face the back side (upper surface side) of the LED element 7 with the light emitting unit substrate 5 attached to the mounting bosses 13 and 13A. The heat conduction rib 11 is in contact with the upper surface of the light emitting unit substrate 5 at the position, and the light emitting unit substrate 5 is thermally attached to the main body 2, and the heat generated by the LED element 7 is transmitted through the light emitting unit substrate 5 through the main body. Heat is transferred to 2 and dissipated from the main body 2.
Note that a heat conductive film (not shown) for heat dissipation is formed on the upper surface of the light emitting unit substrate 5 so as not to be electrically connected to the printed wiring on the lower surface. A further heat transfer effect to the main body 2 is obtained.

  Further, in a state where the light emitting unit substrate 5 is attached to the mounting bosses 13 and 13A in this way, the light emitting unit substrate 5 is located slightly closer to the space 4 side than the opening 2A (position entering the front space 4A side). ) In a state along the opening 2A substantially in parallel. The internal space 4 of the main body 2 is formed so as to gradually become deeper from the front portion toward the rear portion (becomes gradually higher upward with the opening 2A as a reference). Between the upper wall 2T and the surrounding wall 2S and the light emitting unit substrate 5, an air passage extending obliquely upward and forward from the rear part of the main body 2 and communicating with the front end and the rear end of the heat conducting rib 11 is formed. Heat in the main body 2 is effectively dissipated from the main body 2 by the air flowing through the air passage.

  The light distribution unit 8 is made of a light-transmitting synthetic resin, and has a configuration in which a plurality of light distribution portions 82 are integrally formed on a plate-like portion 81. The light distribution unit 82 is a part that forms outgoing light that has a predetermined light distribution for each LED element 7, and has a lens shape in the embodiment. The light distribution unit 82 selects a first light distribution unit 82A having a light distribution characteristic in the left-right direction of the lighting fixture 1 and a second light distribution unit 82B having a light distribution characteristic in a direction substantially directly below the lighting fixture 1. It is possible.

For this reason, the mounting boss 13B is formed integrally with the main body 2 so as to hang from the upper wall 2T, and the screw 12 is mounted through the holes 14A and 14B formed in the central portion of the light emitting unit substrate 5 and the plate-shaped unit 81. The light distribution unit 8 is attached to the lower surface of the light emitting unit substrate 5 by being screwed to the boss 13B.
In this attachment, the first light distribution state in which the LED element 7 is located in the concave portion on the back side of the first light distribution unit 82A and the light distribution in the left-right direction of the lighting fixture 1 is performed by the attachment with the screws 12, and the second light distribution. The LED element 7 is positioned in the concave portion on the back side of the part 82B, and the second light distribution state in which light distribution is performed in the substantially downward direction of the lighting fixture 1 can be selected.

  The luminaire 1 includes a rear space in which a control unit 16 including a power supply unit that supplies lighting power to the LED elements 7 and a control circuit that controls turning on and off of the LED elements 7 is located behind the front space 4A. 4B. For this reason, the control unit 16 is arranged behind the light emitting unit substrate 5. The control unit 16 is attached to the lower surface of the control board 17 in a state where the electrical components constituting the power supply unit and the electrical components EP constituting the control circuit are connected to the printed wiring formed on the upper surface.

As shown in FIGS. 1 and 2, the control board 17 includes four mounting bosses 18 </ b> A that integrally project from the main body 2 so as to hang from the upper wall 2 </ b> T to the rear space 4 </ b> B at the rear position of the light emitting unit board 5. Supported by 18B. The pair of mounting bosses 18 </ b> A and the pair of mounting bosses 18 </ b> B are arranged at diagonal positions. With the control board 17 placed on these bosses, two mounting bosses 18 </ b> A on the diagonal lines are attached with screws 19. It fixes and it will be in the heat conduction state with the main body 2. The remaining two mounting bosses 18B on the diagonal line are positioning bosses provided with protrusions fitted in the two diagonal holes formed on the control board 17 at the center.
In this attached state, the control board 17 is a position that is deeper into the space 4 side from the opening 2A (an upper position that is closer to the upper wall of the rear space 4B) and is higher than the light emitting section substrate 5. In addition, the position (the position close to the upper wall of the main body 2) that has entered deep into the internal space 4 is maintained.

  The control unit 16 and the LED element 7 include a connector 20C on the light emitting unit substrate 5 side disposed at the rear end portion of the lower surface of the light emitting unit substrate 5, and a connector 21C on the control unit 16 side disposed at the front end portion of the control unit 16. Are electrically connected, the operation of the control unit 16 controls the turning on / off of the LED element 7.

  Since it is dangerous for an operator to touch the electric circuit portion of the control unit 16 with the translucent cover 3 removed from the main body 2 for the internal inspection of the lighting fixture 1, etc., in order to prevent the danger, A protective cover 22 that covers the entire control unit 16 from below is provided.

  The rear space 4B includes a mounting boss 23A that protrudes integrally from the main body 2 so as to hang down from the upper wall 2T in a diagonal arrangement with the rear mounting boss 13, and a rear mounting boss 13A that is diagonally arranged from the upper wall 2T. It has a mounting boss 23B that protrudes integrally from the main body 2 so as to hang down. The protective cover 22 has a front end placed on the mounting bosses 13 and 13A, and a rear end placed on the mounting bosses 23A and 23B. The diagonally mounted mounting bosses 13A and 23B are positioning bosses provided with protrusions fitted in two diagonal holes formed in the protective cover 22 at the center, and diagonally mounted mounting bosses 13 and 23A. Is a fixing boss that is fixed by screws 9 and 24 through two diagonal holes formed in the protective cover 22.

By this attachment, the protective cover 22 is in a state of being separated from the control unit 16 including the control board 17 and the electric component EP, and prevents an electric shock due to an operator touching the control board 17 and the electric component EP.
The protective cover 22 is made of a metal plate or an opaque synthetic resin plate, and has an effect of preventing the control unit 16 from being seen from the outside through the translucent cover 3.

The luminaire 1 includes an illuminance sensor (also referred to as an optical sensor) SS that detects ambient illuminance of ambient light. The illuminance sensor SS is attached to a sensor substrate 25 that is electrically connected to the electrical component EP that constitutes the control circuit of the control unit 16. The control unit 16 includes an illuminance sensor circuit that generates an illuminance detection signal based on the illuminance detected by the illuminance sensor SS.
The illuminance sensor circuit may be arranged on the sensor substrate 25 and an illuminance detection signal may be output from the illuminance sensor circuit to the control unit 16.

  As a result, the control unit 16 controls the LED element 7 so that the LED element 7 is turned on at night from sunset to dawn and the LED element 7 is turned off during daytime from dawn to sunset by detecting the external light of the illuminance sensor SS. The

  The lighting fixture 1 includes a mounting portion 10 that is formed integrally with a rear wall 2B that is a part of the peripheral wall 2S of the main body 2 and protrudes rearward from the rear wall 2B. The attachment part 10 is a form attached to the support | pillar PL, such as a utility pole, with the attachment band 30, and is comprised by the plate-shaped attachment part 101B of the left-right arrangement | positioning extended in parallel back from the rear wall 2B of the lighting fixture 1. As shown in FIG.

  The rear end surfaces 101R of the left and right plate-like attachment portions 101B are linear along the column surface (circumferential surface) of the support column PL along the vertical direction. The left and right attachment plate portions 101B have attachment holes 31 that are long in the vertical direction through which the attachment band 30 is inserted and locked.

  FIG. 7 shows a state where the LED lighting fixture 1 is attached to the support column PL by the first attachment portion 101 in this way. In this case, the lighting fixture 1 maintains an inclined state where the line of the opening 2A is slightly higher than the rear part 1A by the angle α with respect to the horizontal line. In this state, the lower surface of the translucent cover 3 is inclined downward from the front to the rear, and forms a rising portion 3G that sharply faces the main body 2 from the rear. A drainage hole 15 is provided at the lowest part of the cover 3.

  In such an attached state, in a state where the first light distribution unit 82 corresponds to the LED element 7, a long distribution in the left-right direction with respect to the front-rear direction axis of the LED lighting device 1 due to the lens effect of the first light distribution unit 82 Since light is formed, a road surface that is long in the left-right direction can be irradiated. Moreover, in the state where the second light distribution unit 82B corresponds to the LED element 7, the light distribution that irradiates the ground almost directly below the LED lighting device 1 is formed by the lens effect of the second light distribution unit 82B.

In the lighting fixture 1, when the LED element 7 is turned off, the temperature of the internal space 4 decreases and pressure fluctuation occurs. When air flows in from the lower drainage hole 15, rainwater is sucked into the internal space 4, There is a risk of flooding.
In order to prevent this, the four corners fixed with the screws NJ in the state where the transparent cover 3 is fixed to the peripheral edge of the opening 2A of the main body 2 with the screws NJ as shown in FIG. Further, the peripheral edge 2S1 of the opening 2A of the main body 2 and the back surface of the peripheral edge 3H of the translucent cover 3 are in contact with each other. Then, as shown in FIG. 8, a breathing air passage 50 in which the internal space 4 communicates with the outside air is formed at the concavo-convex constituent portion where the groove 2M and the flange 3F fit.
As shown by the arrows in FIG. 8, the breathing air passage 50 has a breathing action in which air enters and exits between the internal space 4 and the outside air in accordance with lighting / extinguishing of the LED element 7, changes in the outside air temperature, and the like. As a result, there is no risk of flooding into the internal space 4 from the drain hole 15.

Moreover, the structure which makes it difficult for the rainwater which transmitted the translucent cover 3 at the time of the precipitation from the lighting fixture 1 to flow in from the drain hole 15 is employ | adopted.
As shown in FIGS. 10 to 12, the drainage hole 15 is integrally formed with a thick hemispherical portion 40 that protrudes downward at the bottom of the bottom wall of the translucent cover 3. Are provided with a plurality of drainage slits 42 extending in parallel in the front-rear direction. The width of the slit 42 is preferably smaller within the drainable range, the width of the upper portion is smaller than the lower portion, the minimum portion is about 0.5 mm, and the partition 41 portion remains in a hemispherical shape between the slits 42. .
Although the slit 42 can also be formed in the left-right direction, as shown in FIG. 7, since the front part of the lighting fixture 1 is attached high, it is easier to drain if the slit 42 is also formed in the front-rear direction.

  With such a configuration, in the drainage hole 15 portion, the bottom wall of the translucent cover 3 is thickened by the thick hemispherical portion 40, and the vertical length of the slit 42 that becomes a substantial drainage hole ( The height is longer (higher) than when the bottom wall of the translucent cover 3 has a uniform thickness.

As described above, since the drainage slit 42 is provided in the hemispherical portion 40, when rainwater transmitted through the translucent cover 3 reaches the hemispherical portion 40 during precipitation from above the lighting fixture 1, the drainage is drained to the planar portion. Compared with the case where a hole is provided, water is less likely to stay and water drainage is improved, and the risk of rainwater suction as described above can be reduced.
Moreover, since the drainage slit 42 is provided in the thick hemispherical portion 40, the substantial drainage hole 15 becomes the slit 42, and the distance from the lower surface of the hemispherical portion 40 to the internal space of the translucent cover 3 is drained. The vertical length of the hole and the substantial length (height) of the drainage hole are secured, so that the intrusion of rainwater flowing along the surface of the translucent cover 3 and the lower side of the lighting fixture 1 It is possible to suppress the intrusion of splash water or the like from the water, and to reduce the possibility that the inside of the lighting fixture 1 is submerged.

The daylighting unit 26 that takes ambient light around the luminaire 1 into the illuminance sensor SS faces the rear of the luminaire 1, and at least part of the daylighting portion 26 is located above the attachment portion 101 </ b> B in a side view of the luminaire 1.
One specific configuration will be described.

  As shown in FIGS. 2, 5, and 6, the rear wall 2 </ b> B of the lighting fixture 1 to which the daylighting unit 26 is attached is inclined obliquely forward and upward from the lower part toward the upper part, and the upper end of the left and right plate-like attachment parts 101 </ b> B A daylighting unit 26 is disposed between the units. The sensor board 25 to which the illuminance sensor SS is attached is arranged along the inner surface of the rear wall 2B of the lighting fixture 1 at a rear position of the control board 17 so that the illuminance sensor SS is opposed to the daylighting unit 26. The upper portion of the substrate 25 is vertically oriented with the upper side inclined obliquely upward.

  As shown in FIG. 2, the daylighting portion 26 is made of a silicon rubber translucent member, and is a cylindrical insertion portion that is inserted into a circular daylighting hole 27 formed through the rear wall 2 </ b> B of the lighting fixture 1. 26 </ b> A and a circular head 26 </ b> B having a diameter large enough to block the daylighting hole 27, and the head 26 </ b> B contacts the outer surface of the rear wall 2 </ b> B of the lighting device 1 in a close contact state. In order to stably hold the daylighting portion 26 on the rear wall 2B, a locking projection 26T formed on the outer surface of the insertion portion 26A is locked to the peripheral portion of the daylighting hole 27 on the inner surface of the rear wall 2B.

  The daylighting unit 26 is disposed between the upper end portions of the left and right plate-shaped attachment portions 101B, and at least a part of the head portion 26B is located above the attachment portion 101B in the side view of the lighting fixture 1.

  In order to prevent the illuminance sensor SS from detecting light at the time of light emission of the LED element 7 and to allow external light taken in from the daylighting unit 26 to be guided to the illuminance sensor SS, the daylighting unit 26 is covered and taken in from the daylighting unit 26. A cylindrical light shielding cover 28 that blocks light other than outside light is provided. The cylindrical light shielding cover 28 is attached to the sensor substrate 25, and includes a first cylindrical portion 28A that encloses and surrounds the illuminance sensor SS and is in close contact with the inner surface of the insertion portion 26A, and a second cylindrical portion 28B that covers the insertion portion 26A. Have The second cylindrical portion 28B surrounds the first cylindrical portion 28A, and covers the insertion portion 26A in close contact with the outer surface of the locking projection 26T and the peripheral portion of the daylighting hole 27 with the inner surface of the rear wall 2B.

A support protrusion 2P is integrally formed on the upper wall 2T of the main body 2 so as to protrude into the rear space 4B. The insertion portion 26A and the cylindrical light shielding cover 28 are coupled to each other by fitting the cylindrical light shielding cover 28 using the flexibility of the insertion portion 26A and to the rear portion of the protrusion 2P using the flexibility of the insertion portion 26A. By intruding the upper portion of 25, the sensor substrate 25 is prevented from moving forward, and the coupling between the insertion portion 26A and the cylindrical light shielding cover 28 is maintained.
As described above, the illuminance sensor SS is disposed opposite to the daylighting unit 26 by the coupling of the insertion unit 26 </ b> A and the cylindrical light shielding cover 28.

The illuminance sensor SS is connected to the printed wiring of the sensor board 25, and the printed wiring of the sensor board 25 is electrically connected to the control board 17. The sensor substrate 25 has a surface facing the rear wall 2B of the main body 2 so that the illuminance sensor SS faces the daylighting unit 26, and the sensor substrate 25 extends along the rear wall 2B inside the rear wall 2B. The upper part of 25 is the vertical arrangement | positioning which inclined diagonally forward upward.
In this state, as shown in FIG. 2, the daylighting unit 26 is arranged so as to face obliquely upward and rearward of the lighting fixture 1 in the upper region in the vicinity of the mounting unit 101 </ b> B, and external light reaching the illuminance sensor SS through the daylighting unit 26. The center daylighting axis HS becomes a direction that is separated obliquely rearward and upward from the attachment portion 101B as it goes rearward.

  As described above, the daylighting unit 26 is inserted and supported by the daylighting hole 27 formed through the rear wall 2B whose upper part is inclined obliquely forward. There is no possibility that the part 26 is blocked, and the ambient light detection by the illuminance sensor SS can be performed satisfactorily. Further, in a state where the daylighting unit 26 is completely surrounded by the attachment unit 101B, if the daylighting unit 26 is entirely blocked by forming a spider web over the left and right attachment units 101B, the daylighting unit 26 Although it is difficult to take in external light, in the present invention, since the upper part of the daylighting unit 26 protrudes upward from the attachment unit 101B, external light enters from the protruding portion and the illuminance sensor SS detects the external light. It becomes possible.

  The form of the attaching part 101B and the form of the highest part are not limited to the above-described embodiment, and the relationship between the attaching part 101B and the daylighting part 26 can be changed without departing from the gist of the present invention.

In order to supply power to the luminaire 1 from an external power source, the external power supply line supplied to the luminaire 1 passes through an insulating rubber bushing 35 inserted into a through hole 34 formed in the rear wall 2B of the main body 2. In this configuration, the power connector attached to the tip of the external power line is electrically connected to the power unit of the control unit 16.
The through-hole 34 is located below the daylighting unit 26, is located in the middle portion between the left and right attachment portions 101 </ b> B, and is completely hidden by the attachment portion 101 </ b> B in a side view of the luminaire 1. . The grounding terminal 37 of the luminaire 1 is also received over the lower portions of the left and right attachment portions 101B.

  In the embodiment, the translucent cover 3 is provided. However, the present invention does not provide the translucent cover 3, and the light distribution unit 82 is integrated so that the light distribution unit 8 also serves as the translucent cover 3. The planar area of the plate-shaped part 81 to be formed may be widened, and the light distribution unit 8 may be formed in a size that covers the entire opening 2A inside the flange 2F around the periphery of the opening 2A of the main body 2. .

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Main body 2A Opening part 2B Rear wall 2F Flange 3 Translucent cover 4 Internal space 4A Front space 4B Rear space 5 Light emission part board | substrate 6 Light emission part 7 Light source for illumination (LED element)
DESCRIPTION OF SYMBOLS 8 Light distribution unit 10 Attachment part 101B Plate-shaped attachment part 15 Drain hole 16 Control part 17 Control board 25 Sensor board 26 Daylighting part 27 Daylight hole 40 Hemispherical part 42 Drain slit 50 Respiratory air path SS Illuminance sensor

Claims (6)

Based on the detection of the illuminance sensor, an illumination light source that emits light toward a required location, an illuminance sensor that detects external light around the luminaire, and a mounting portion that protrudes rearward of the luminaire A control unit for controlling light emission of the illumination light source;
The daylighting unit that takes the outside light into the illuminance sensor faces the rear of the lighting fixture, and at least a part of the lighting unit is located above the mounting portion in a side view of the lighting fixture.
A lighting apparatus characterized by that. Based on the detection of the illuminance sensor, an illumination light source that emits light toward a required location, an illuminance sensor that detects external light around the luminaire, and a mounting portion that protrudes rearward of the luminaire A control unit for controlling light emission of the illumination light source;
The daylighting unit that takes the outside light into the illuminance sensor is located at least partially above the attachment unit in a side view of the lighting fixture, and a central lighting axis is directed obliquely upward and rearward of the lighting fixture,
A lighting apparatus characterized by that. In the upper area near the attachment portion, the daylighting portion is in a direction in which the central daylighting axis of the external light reaching the illuminance sensor through the daylighting portion 26 is separated rearward and upward from the attachment portion as it goes rearward.
The lighting fixture according to claim 1 or claim 2, wherein The mounting portion is composed of left and right plate-shaped mounting portions extending in parallel rearward from the lighting fixture,
The daylighting portion is disposed between upper end portions of the left and right plate-shaped attachment portions,
The lighting fixture according to any one of claims 1 to 3. The daylighting portion is made of a translucent member, and has an insertion portion that is inserted into a daylighting hole formed through the rear wall of the lighting fixture, the upper portion of which is inclined obliquely forward, and a size that blocks the daylighting hole. And a head abutting against the outer wall of the rear wall of the lighting fixture,
A cylindrical light shielding cover that is in close contact with the insertion portion and blocks light other than external light taken from the daylighting portion,
The lighting fixture according to any one of claims 1 to 4, wherein A sensor substrate on which the illuminance sensor is disposed;
A light emitting unit substrate in which the illumination light source is disposed on a lower surface;
A control board on which the control unit is disposed,
The lighting fixture has an internal space and is long in the front-rear direction,
Among the internal spaces, the light emitting unit substrate is disposed in a front space, and the control substrate is disposed in a rear space,
The sensor board has the illuminance sensor facing the daylighting unit, and is arranged vertically along the rear wall inner surface of the lighting fixture at a position behind the control board.
The lighting fixture according to any one of claims 1 to 4, wherein

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