JP2016149221A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire which eases restrictions on the layout of a power source and an optical sensor in a case housing the power source and the optical sensor and efficiently takes light into the optical sensor.SOLUTION: A luminaire (300) includes: an LED (3); a sensor window (101) which takes light thereinto; an optical sensor (71) which senses brightness of a surrounding area on the basis of the light taken from the sensor window (101); a lighting circuit (70) which controls lighting of a light emitting element on the basis of the brightness of the surrounding area sensed by the optical sensor (71); a power source box lower lid (72a) and a power source box upper lid (72b) which house the optical sensor (71) and the lighting circuit (70); and a cover (5) which covers the LED (3), the power source box lower lid (72a), and the power source box upper lid (72b). The power source box lower lid (72a) and the power source box upper lid (72b) have reflection parts which reflect the light taken from the sensor window (101) into the optical sensor (71).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting apparatus that is turned on and off according to ambient brightness detected by a photosensor.

  2. Description of the Related Art Conventionally, there is known an illumination device that senses ambient brightness with a light sensor and automatically controls turning on and off of a light source unit according to the brightness. In such an illuminating device, the light source unit is automatically controlled such that it is turned on when the surroundings become dark and is turned off when the surroundings become bright.

  For example, Patent Literature 1 discloses an illumination device having a light source unit and a photosensor installed on the back side of the light source unit. In this illuminating device, a box-like case in which a light receiving hole (light capturing part) is formed is attached to the back side of the light source part, and a control board and an optical sensor are provided in the case. This optical sensor is installed toward the light receiving hole.

  Patent Document 2 discloses a lighting device having a light source, a case that houses a lighting circuit and an optical sensor, and a housing that stores the light source and the case. The case integrally forms a cylindrical daylighting part (light capturing part) for guiding natural light (sunlight) into the case.

JP 2012-216477 A (released on November 8, 2012) JP 2014-165138 A (published September 8, 2014)

  In the illuminating devices disclosed in Patent Documents 1 and 2, the captured light can be efficiently used by directly guiding the natural light captured from the light capturing unit to the optical sensor. However, when using a case that houses both the power supply and the optical sensor, the arrangement position of the optical sensor is specified according to the position of the light capturing unit, and the arrangement position of the power supply is limited to a position other than the arrangement position of the optical sensor. Is done. In addition, the optical sensor must be disposed in the vicinity of the light capturing unit in order to directly receive the light captured from the light capturing unit. For this reason, restrictions have arisen in the layout of the optical sensor and the power source due to the light capturing unit.

  The present invention has been made in view of the above-described conventional problems, and relaxes restrictions on the layout of the power source and the optical sensor in the case where both the power source and the optical sensor are housed, and efficiently transmits light to the optical sensor. It aims at providing the lighting fixture which can be taken in.

  In order to solve the above-described problems, a lighting fixture according to one embodiment of the present invention includes a light-emitting element, a light capturing portion that captures light, and ambient brightness based on light captured from the light capturing portion. A light sensor that senses light, a lighting circuit that controls lighting of the light emitting element based on ambient brightness sensed by the light sensor, and a storage box that houses the light sensor and the lighting circuit, The storage box has a reflection part that reflects the light taken in from the light taking-in part to the optical sensor.

  According to one aspect of the present invention, since the light captured from the light capturing unit is efficiently guided to the optical sensor by the reflecting unit, the optical sensor does not need to be disposed close to the light capturing unit. . Therefore, even when a case containing both the power supply and the optical sensor is used, the arrangement position of the optical sensor is not specified according to the position of the light capturing unit, and the arrangement position of the power supply is a position other than the arrangement position of the optical sensor. It is not limited to. Therefore, there is an effect that the restriction on the layout of the power source and the optical sensor in the case where both the power source and the optical sensor are accommodated can be relaxed, and light can be efficiently taken into the optical sensor.

It is a disassembled perspective view which shows the structure of the lighting fixture which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the external appearance of the said lighting fixture. It is a figure which shows the state in which the said lighting fixture was attached to the support | pillar. (A) is a top view which shows the structure of the said lighting fixture, (b) is a side view which shows the structure of the said lighting fixture, (c) is AA arrow sectional drawing of (a). . (A) is a bottom view showing a configuration in a state where the cover of the lighting fixture is attached, (b) is a bottom view showing a configuration in a state where the cover of the lighting fixture is removed, and (c) is (a) ) Is a cross-sectional view taken along line B-B of FIG. It is a figure which shows the structure around the power supply unit of the lighting fixture shown by FIG. 1, Comprising: (a) is a bottom view of the state which removed the cover and the power supply box lower cover of the said power supply unit, (b) is an arm. It is the top view seen from the side, (c) is CC sectional view taken on the line of (b). (A) is a top view which shows the structure of the inner surface of the said power supply box lower cover, (b) is a bottom view which shows the structure of the outer surface of the said power supply box lower cover. It is a figure which shows the structure of the said power supply unit periphery of the lighting fixture shown by FIG. 1, Comprising: (a) is a perspective view which shows the state before attaching the said power supply box lower cover to the said power supply box upper cover, (b) FIG. 4 is a perspective view showing a state after the power box lower lid is attached to the power box upper lid. (A) is sectional drawing of the part containing the said power supply unit of the lighting fixture shown by FIG. 1, (b) is an enlarged view of the principal part of the optical sensor periphery shown by (a). (A) is a top view which shows the structure of the part containing the sensor window of the lighting fixture shown by FIG. 1, (b) is DD sectional view taken on the line of (a), (c) is ( It is an EE arrow directional cross-sectional view of a). (A) is a top view which shows the other structure of the part containing the sensor window of the lighting fixture shown by FIG. 1, (b) is a FF arrow directional cross-sectional view of (a), (c). [FIG. 3] is a sectional view taken along line GG of FIG. It is a figure which shows the structure of the cover of the lighting fixture which concerns on Embodiment 2 of this invention, Comprising: (a) is a side view which shows the part which covers the power supply unit in the said cover, (b) is a power supply unit in the said cover. It is a top view which shows the part covered. It is a figure which shows the structure of the said power supply unit periphery of the lighting fixture which concerns on Embodiment 3 of this invention, Comprising: (a) is a perspective view of the state which attached the cover to the body, (b) is from a power supply unit to a cover. It is a perspective view which shows the dripping of water in the state which removed the cover, (c) is a perspective view of the state which removed the cover.

Embodiment 1
Embodiment 1 of the present invention will be described below with reference to FIGS.

  FIG. 1 is an exploded perspective view showing a configuration of a lighting fixture 300 according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing an external configuration of the lighting apparatus 300. FIG. 3 is a diagram illustrating a state in which the lighting fixture 300 is attached to the support column. 4A is a top view showing the configuration of the lighting fixture 300, FIG. 4B is a side view showing the configuration of the lighting fixture 300, and FIG. 4C is A in FIG. FIG. FIG. 5A is a bottom view showing the configuration of the lighting fixture 300 with the cover 5 attached, and FIG. 5B is a bottom view showing the configuration of the lighting fixture 300 with the cover 5 removed. c) is a sectional view taken along line B-B in (a).

  As shown in FIGS. 1 and 2, a lighting fixture 300 according to the present embodiment includes a metal arm 1, a body 2 that is attached to the arm 1 and made of an insulating material, is disposed on the body 2, and has an LED 3. An LED board 4 to be mounted, a lens unit 6, a power supply unit 7 for storing a power supply, and a cover 5 for covering the LED board 4 are provided. Hereinafter, each part which comprises the lighting fixture 300 is demonstrated.

<Arm 1>
The arm 1 is attached to a column or wall surface installed on the ground and supports the body 2. The arm 1 is made of a metal plate such as a steel plate, for example, and is formed by integrally forming a rectangular main plate 10 and a pair of side plates 11. Each side plate 11 is formed so as to rise along the thickness direction from both side edges along the longitudinal direction of the main plate 10. The arm 1 is curved so as to be inclined at a certain angle (for example, 30 degrees) with respect to the horizontal plane.

  Hereinafter, a part attached to the body 2 in the arm 1 (part extending from the curved part to the upper end part) is referred to as a body attaching part 1A, and a part attached to the post in the arm 1 is provided to the pillar attaching part 1B (from the curved part to the lower end part). Site).

  In the body attachment portion 1A, two attachment holes 100 are provided in the vicinity of the curved portion with an interval. These mounting holes 100 are formed so as to pass through mounting screws (not shown) used to fix the body 2 to the arm 1.

  Two mounting holes 102 are provided at an interval in a substantially intermediate portion of the column mounting portion 1B. These mounting holes 102 are formed so as to pass through mounting screws (not shown) used for fixing to a wall surface (not shown). Further, two belt holes 103 are provided in the boundary portion between the main plate 10 and the side plate 11 in the column mounting portion 1B from the vicinity of the formation position of the mounting hole 102 to the vicinity of the lower end portion of the column mounting portion 1B. These belt holes 103 are formed in a vertically long shape so that the belt 301 shown in FIG. 3 is inserted.

  As shown in FIG. 3, when the arm 1 is attached to the support 302, the arm 1 is fixed to the support 302 by inserting the belt 301 wound around the support 302 into the belt hole 103. In addition, when the arm 1 is attached to the wall surface, the arm 1 is fixed to the wall surface by inserting a bolt, a screw or the like through the attachment hole 102 and tightening the wall 1.

  In the body attachment portion 1A, an opening 1a is provided to form a sensor window 101 described later. The opening 1 a penetrates in the thickness direction and is formed to form a long rectangle in the width direction of the side plate 11.

  In addition, although the arm 1 becomes a structure attached to a support | pillar or a wall surface, it is not limited to it. For example, the arm 1 may be formed integrally with the support column. The arm 1 configured as described above is installed on the ground.

<Body 2>
The body 2 is provided as a base to which an LED substrate 4, a lens unit 6 and a power supply unit 7 which will be described later are attached. The body 2 is disposed so as to be in contact with the body attachment portion 1 </ b> A in the arm 1. The portion between the arm 1 and the LED substrate 4 in the body 2 is preferably formed thin in order to increase thermal conductivity.

  The body 2 is a box-shaped resin molded product formed of an insulating material, for example, a resin material such as polycarbonate, and one surface (inner surface) thereof is open. The body 2 has a main portion 20 that is entirely rectangular. The main part 20 has a rectangular shape as a whole, and includes an outer wall 21, an inner wall 22, a concave part 25, and a convex part 26.

  As shown in FIG. 4C, the outer wall 21 falls from the upper end surface outside the main portion 20 over the entire circumference outside the main portion 20 except for an opening portion of the concave portion 25 described later. Is formed. On the other hand, the inner wall 22 is formed so as to fall from the upper end surface inside the main portion 20 over the entire circumference inside the main portion 20 except for an open portion of the concave portion 25 described later. Between the lower end portion of the outer wall 21 and the lower end portion of the inner wall 22, a fitting groove 210 into which a long convex portion 55 of the cover 5 described later is fitted is formed.

  The inner wall 22 is provided with a screw hole 221 for attaching a cover 5 to be described later to the body 2. The screw hole 221 is disposed at the end of the inner wall 22 on the side where the tip of the arm 1 is disposed in the main portion 20. The cover 5 is fixed to the body 2 by superimposing a mounting hole 510 (see FIG. 5A), which will be described later, on the screw hole 221 and tightening with a mounting screw (not shown).

  The recess 25 is formed on the outer surface of the main portion 20 so as to be recessed toward the inner surface of the main portion 20. Moreover, the recessed part 25 has a shape and size in which the body attaching part 1A of the arm 1 fits. One end in the longitudinal direction of the recess 25 has a wall surface with which the tip of the body attachment portion 1A of the arm 1 comes into contact, and the arm pressing portion 110 is provided on the wall surface. On the other hand, the other end in the longitudinal direction of the recess 25 is open so as to communicate with the outside, forming an open end. As a result, as shown in FIGS. 4A and 4B, the body attachment portion 1 </ b> A of the arm 1 is disposed in the recess 25, while the curved portion of the arm 1 and the column attachment portion 1 </ b> B protrude from the recess 25. To do.

  As shown in FIG. 4C, the arm pressing portion 110 (arm holding portion) has a pressing surface 110 a that faces the bottom surface of the recess 25. A space slightly longer than the thickness of the arm 1 is provided between the bottom surface of the recess 25 and the pressing surface 110a. In such a structure, the bottom surface of the recess 25 and the pressing surface 110a are held so as to sandwich the tip portion of the arm 1. As a result, the distal end portion of the arm 1 (the distal end and its peripheral portion) is held by the arm pressing portion 110 by being inserted between the bottom surface of the recess 25 and the pressing surface 110a.

  In the vicinity of the open end on the bottom surface of the recess 25, a protrusion 2a is provided. The protrusion 2 a is formed in the same shape (rectangular shape) as the opening 1 a so as to fit into the opening 1 a of the arm 1. As shown in FIG. 4A, the sensor window 101 is formed by exposing the protrusion 2a from the main plate 10 of the arm 1 through the opening 1a. That is, the sensor window 101 is formed by the opening 1a and the protrusion 2a. The sensor window 101 is formed of a material having translucency in the body 2 so that light incident from the outside is transmitted and taken into the inside.

  The convex portion 26 is formed so as to protrude in order to form the concave portion 25 on the inner surface of the main portion 20.

  Bosses 260 and 261 for attaching the body 2 to the arm 1 and bosses 262 for attaching a cover 5 described later to the body 2 are provided on the convex portion 26.

  The bosses 260 and 261 are disposed at the other end in the longitudinal direction of the convex portion 26 (on the open end side of the concave portion 25) with an interval in the width direction of the convex portion 26. On the inner peripheral surface of each boss 260, 261, an internal thread that opens to the recess 25 is formed. The body 2 is fixed to the arm 1 at a position away from the tip by overlapping the mounting holes 100 of the arm 1 on the bosses 260 and 261 and tightening them with mounting screws (not shown). The arm 1 may be fixed to the body 2 with an adhesive instead of the mounting screw.

  The boss 262 is disposed between the bosses 260 and 261, and an internal thread that opens to the convex portion 26 is formed on the inner peripheral surface of the boss 262. The cover 5 is fixed to the body 2 by superimposing a mounting hole 511 (see FIG. 5A) of the cover 5 on the boss 262 and tightening with a mounting screw (not shown).

  Further, the convex portion 26 is provided with bosses 263 and 264 for attaching a power supply unit 7 to be described later to the body 2. The boss 263 is disposed between the center of the protrusion 26 in the longitudinal direction and the protrusion 2a, and the boss 264 is disposed substantially on the side of the protrusion 2a on one side wall along the length of the protrusion 26. Has been. On the inner peripheral surfaces of the bosses 263 and 264, female threads that open to the tips of the bosses 263 and 264 are formed. The attachment of the power supply unit 7 to the body 2 using the bosses 263 and 264 will be described in detail later.

  Furthermore, the convex portion 26 is provided with bosses 265 to 268 for attaching a lens unit 6 described later to the body 2. The bosses 265 to 268 are arranged at two intervals on both side wall portions along the longitudinal direction of the convex portion 26. The attachment of the power supply unit 7 to the body 2 using the bosses 265 to 268 will be described in detail later.

<LED board 4>
LED board 4 (board | substrate) is arrange | positioned on the convex part 26 of the body 2 so that the convex part 26 may be contact | connected directly. A plurality of LEDs 3 (light emitting elements) are mounted on the surface (mounting surface) of the LED substrate 4 at a certain interval along the longitudinal direction of the LED substrate 4. A conductor serving as a power feeding path to each LED 3 is printed on the surface of the LED substrate 4. The LED substrate 4 is preferably formed of a material having heat dissipation properties in order to increase the conductivity of heat generated by the LEDs 3.

<Lens unit 6>
The lens unit 6 is provided to determine the light distribution of the light emitted from each LED 3, and is a resin molded product made of a resin material such as polycarbonate. The lens unit 6 includes a plurality of lenses 61 corresponding to the respective LEDs 3 and a long mounting plate 62 formed integrally with the respective lenses 61. In the present embodiment, each lens 61 is formed integrally with the mounting plate 62 at a constant interval along the longitudinal direction of the mounting plate 62.

  Mounting holes 610 and 611 are provided on one end edge on the long side of the mounting plate 62, and mounting holes 612 and 613 are provided on the other end edge on the long side of the mounting plate 62. The mounting holes 610, 611, 612, and 613 are formed so as to penetrate in the thickness direction of the mounting plate 62, and a mounting screw (not shown) is attached to the body 2 between the lens unit 6 and the LED substrate 4. Used to fix using.

<Cover 5>
The cover 5 is a covering member that covers the inner surface of the body 2 to which the LED substrate 4, the lens unit 6, and the power supply unit 7 are attached. The cover 5 is a semi-cylindrical resin molded product made of a translucent resin material such as acrylic resin, and one surface (inner surface) thereof is open. The joint portion of the cover 5 with the body 2 has a rectangular shape along the outer shape of the body 2.

  A long convex portion 55 that protrudes so as to be fitted in the fitting groove 210 of the body 2 is formed over the entire circumference at the peripheral edge that becomes the above-described joining portion. When the cover 5 closes the release surface of the body 2, the long convex portion 55 is fitted into the fitting groove 210 of the body 2, so that a space sealed by the body 2 and the cover 5 can be formed.

  As shown in FIG. 5A, the cover 5 is provided with attachment holes 510 and 511 for attaching the cover 5 to the body 2. The attachment hole 510 is formed at the end portion on the side where the tip of the arm 1 is disposed, and the attachment hole 511 is formed at the end portion of the arm 1 on the curved portion side. The attachment holes 510 and 511 are formed so as to penetrate between the inner surface side and the outer surface side of the cover 5.

  Further, a drain hole 5 a for discharging water accumulated in the cover 5 is provided on the bottom surface of the cover 5 near the mounting hole 511. The drain hole 5 a is formed elongated along the longitudinal direction of the cover 5.

<Power supply unit 7>
The power supply unit 7 includes a power supply board 72, a power supply box lower cover 72 a (storage box) that stores the power supply board 72, and a power supply box upper cover 72 b (storage box). The power supply unit 7 is attached in the vicinity of the end of the boss 260 to 262 on the convex portion 26 of the body 2. A casing for storing the power supply substrate 72 is formed by covering the power supply box upper cover 72b with the power supply box lower cover 72a.

  A boss ring 700 and a locking piece 701 are provided on the power supply box upper lid 72b. The boss ring 700 is an annular portion that fits on the outer peripheral wall of the boss 263 provided on the convex portion 26, and is formed on the side wall portion of the power supply box upper lid 72b. The locking pieces 701 include two small pieces that form a square shape from the upper end surface of the power box upper lid 72b toward the opening, and are formed one by one on the opposing side wall portions of the power box upper lid 72b.

  On the other hand, mounting holes 702 and 703 and a slit 704 are provided in the power supply box lower lid 72a. As shown in FIGS. 5A and 5B, the mounting hole 703 is formed in the outer wall portion facing the bosses 260 to 262 in the power box lower lid 72a, and the mounting hole 702 is formed with the mounting hole 703. The outer wall portion is opposed to the outer wall portion. The slits 704 are cut portions that are locked to the locking pieces 701, and are formed one by one on the opposing side wall portions of the power supply box lower lid 72a.

  The power box lower lid 72a is combined with the power box upper lid 72b without being displaced by being placed on the power box upper lid 72b so that the slit 704 is locked to the locking piece 701. Further, the boss ring 700 is fitted to the boss 263 of the convex portion 26, whereby the power supply box upper lid 72 b is positioned on the convex portion 26. Then, the bosses 263 and 264 of the power box lower lid 72a are overlapped with the mounting holes 702 and 703, respectively, and tightened with mounting screws (not shown), so that the power unit 7 is fixed to the body 2.

  Further, as shown in FIGS. 5B and 5C, the power supply substrate 72 is mounted with a lighting circuit 70 and an optical sensor 71.

  The optical sensor 71 senses natural light guided into the power supply unit 7 through the sensor window 101 and outputs a current value proportional to the amount of received light. The optical sensor 71 is disposed in the vicinity of the opening formed in the power box lower lid 72a and the power box upper lid 72b so as to receive natural light.

  The lighting circuit 70 is a circuit including a power supply unit that functions as a power supply for supplying power to each LED 3 and a control unit that controls light emission (lighting) according to the detection output of the optical sensor 71. The lighting circuit 70 includes, for example, a conventionally known AC / DC converter that converts AC power supplied from a commercial power source into DC power as a power source.

  The lighting circuit 70 supplies power to the LED 3 when the current value proportional to the amount of light received by the optical sensor 71 is below the threshold value. On the other hand, the lighting circuit 70 does not supply power to each LED 3 when the amount of light received from the optical sensor 71 is large and the current value is equal to or higher than the threshold value. Accordingly, in the lighting device 300, for example, each LED 3 is automatically turned on when the sun goes down and the area becomes dark, and each LED 3 is automatically turned off when the sun rises and the area becomes bright.

<Details of reflection structure>
Here, a reflection structure for guiding light taken from the sensor window 101 to the optical sensor 71 will be described.

  FIG. 6 is a diagram showing a configuration around the power supply unit 7 of the lighting fixture 300 shown in FIG. 1, and (a) is a bottom view of the state where the cover and the power supply box lower lid of the power supply unit are removed. (B) is the top view seen from the arm side, (c) is CC sectional view taken on line CC of (b). FIG. 7A is a view showing the structure of the inner surface of the power box lower lid 72a, and FIG. 7B is a view showing the structure of the outer surface of the power box lower lid 72a. FIG. 8 is a diagram showing a configuration around the power supply unit 7 of the lighting fixture 300 shown in FIG. 1, wherein (a) is a perspective view showing a state before the power box lower lid 72a is attached to the power box upper lid 72b. FIG. 7B is a perspective view showing a state after the power box lower lid 72a is attached to the power box upper lid 72b. 9A is a cross-sectional view of a portion including the power supply unit 7 of the lighting fixture 300 shown in FIG. 1, and FIG. 9B is an enlarged view of a main part around the optical sensor 71 shown in FIG. is there.

  As shown in FIG. 6A, the optical sensor 71 is provided on a power supply substrate 72, and the power supply substrate 72 is stored in a power supply box upper lid 72b. The optical sensor 71 is disposed in the vicinity of the sensor window 101 and the bosses 260, 261, and 262 in the vicinity of the side wall of the power supply box upper lid 72b.

  As shown in FIG. 6B, the sensor window 101 is formed by fitting a projection 2 a formed by projecting a part of the body 2 and an opening 1 a formed in the arm 1. Yes. Since the body 2 has translucency, light around the lighting device 300 passes through the protrusion 2 a of the body 2. Accordingly, light around the lighting fixture 300 can pass through the sensor window 101 and enter the lighting fixture 300.

  As shown in FIGS. 7A and 7B, the power supply unit 7 includes a reflection unit 80 described later. The reflector 80 is formed by the outer wall surface of the power box lower lid 72a and the inner wall surface of the power box upper lid 72b, which are close to the sensor window 101. In addition, the reflecting portion 80 has a power supply box lower lid 72a placed on the power supply box upper lid 72b, and forms a space between the power supply box upper lid 72b and the side wall portion on the optical sensor 71 side. It is overhanging and formed.

  As shown in FIGS. 8A and 8B, the reflector 80 is in a position where the light taken in from the sensor window 101 hits in a state where the power box lower lid 72a is placed on the power box upper lid 72b. The optical sensor 71 and the power supply substrate 72 are covered with a power supply box lower cover 72 a and a power supply box upper cover 72 b to form the power supply unit 7.

  As shown in FIG. 9B, the reflecting unit 80 includes a first reflecting unit 81, a second reflecting unit 82, and a third reflecting unit 83.

  The first reflecting portion 81 is a surface substantially parallel to the bottom surface of the power supply box lower lid 72 a and faces the sensor window 101. The second reflecting portion 82 is a surface on the boss 260, 261 side and is inclined at an acute angle with respect to the sensor window 101. The third reflecting portion 83 is an outer wall surface of the power supply box upper lid 72 b facing the second reflecting portion 82, and is a surface that is substantially perpendicular to the first reflecting portion 81 and the sensor window 101. In addition, an opening is provided between the third reflecting portion 83 and the first reflecting portion 81 so that the light reflected by the reflecting portion 80 enters the optical sensor 71.

  In the power box lower lid 72a, two inner wall surfaces adjacent to the first reflecting portion 81, the second reflecting portion 82, and the third reflecting portion 83 and facing each other also reflect the light taken in from the sensor window 101. Therefore, it can be said that the reflecting portion 80 is configured. However, since these inner wall surfaces are located on the sides of the optical sensor 71, the amount of light that can be reflected by the optical sensor 71 is determined by the first reflecting portion 81, the second reflecting portion 82, and the third reflecting portion 83. Less than the amount of light that can be reflected.

  The light taken in from the sensor window 101 is reflected by at least one of all the reflection parts including the first reflection part 81, the second reflection part 82, and the third reflection part 83 in the reflection part 80 according to the incident angle. Then, it is guided to the optical sensor 71.

  For example, the light taken in from the sensor window 101 is reflected by the first reflecting portion 81 and guided to the optical sensor 71 along the optical path A indicated by the solid line in FIG. Alternatively, the light taken in from the sensor window 101 is reflected by the second reflecting portion 82 and guided to the optical sensor 71 along an optical path B indicated by a one-dot chain line in FIG. Alternatively, the light taken in from the sensor window 101 is reflected by the third reflecting portion 83, is reflected in the order of the second reflecting portion 82, and the first reflecting portion 81, and is indicated by a broken line in FIG. 9C. The light is guided to the optical sensor 71 along the optical path C.

  In order to guide light to the optical sensor 71 more efficiently, it is preferable that the surface constituting the reflection unit 80 has a structure with high light reflectance. For example, it is preferable that a reflective film is formed on the surface constituting the reflective portion 80 by plating with silver or the like, or with a high reflectance material such as magnesium carbonate.

  In the present embodiment, the light is guided to the optical sensor 71 by the reflector 80, but other light guide members may be used. For example, light taken from the sensor window may be guided to the optical sensor 71 by reflection by a light guide tube whose tube wall is made of a reflective material or a plurality of mirrors.

  In the structures described in Patent Documents 1 and 2, since the light capturing part and the optical sensor are close to each other, the case where the lighting fixture is manufactured using the case in which the power source and the optical sensor are integrally stored is used. The arrangement position is determined by the arrangement position of the light capturing section. On the other hand, in the lighting fixture of the present embodiment, the sensor window 101 and the optical sensor 71 do not need to be close to each other, so there is no restriction on the arrangement position of the power supply unit 7, and there is no restriction on the layout of the lighting device. Therefore, the freedom degree of design of an illuminating device can be improved.

  Further, when a lighting fixture is manufactured using the power supply unit 7 in which the power supply board 72 and the optical sensor 71 are housed together, the sensor window 101 and the optical sensor 71 for taking in ambient light are arranged close to each other. Even if it is not arranged, the light can be efficiently taken into the optical sensor 71 by reflecting the light by the reflecting portion 80 and guiding the light to the optical sensor 71.

  The power supply box lower lid 72a and / or the power supply box upper lid 72b forming the casing of the power supply unit 7 may be made of a light-transmitting material.

  Examples of the light-transmitting substance include an acrylic resin. Thereby, for example, even when dust, snow, dust, or the like adheres to the sensor window 101 and ambient light cannot be taken in from the sensor window 101, the ambient light is not affected by the power box lower lid 72a or the power box. It is possible to enter the optical sensor 71 through the upper lid 72b. Therefore, when the sun rises and the surroundings of the lighting fixture become bright, the light transmitted through the power supply box lower lid 72a or the power supply box upper lid 72b enters the optical sensor 71, and the lighting fixture can be reliably turned off.

  Part of the power box lower lid 72a and / or the power box upper lid 72b configured as described above may be a light shielding portion. Specifically, in order to prevent stray light from the LED 3 from entering the optical sensor 71 and malfunctioning the optical sensor 71 when the lighting fixture is turned on, the power box lower lid 72a and / or the power source in the lighting fixture 200 is prevented. The portion of the box upper lid 72b on the LED substrate 4 side is preferably shielded from light.

  For light shielding, the portion to be shielded may be colored black or the like, or a light shielding film such as a metal foil may be attached. Alternatively, the power supply box lower lid 72a and / or the power supply box upper lid 72b is manufactured by combining a light-transmitting material and a non-light-transmitting material, and a light-shielding portion is formed of the light-transmitting material. Also good.

  Thereby, at the time of lighting of a lighting fixture, it can prevent that the stray light from a light emitting element enters into the optical sensor 71, and the optical sensor 71 malfunctions.

[Modification]
A modification of this embodiment will be described below with reference to FIG. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted.

  In this modified example, as shown in FIGS. 6B and 6C, the sensor window 101 includes an opening 1a formed in the arm 1 and a protruding portion formed by projecting a part of the body 2. In addition to being formed by fitting 2a, the surface of the protrusion 2a exposed from the opening 1a forms the same plane as the surface of the arm 1.

  That is, in a state where the protrusion 2a is fitted in the opening 1a, the surface of the protrusion 2a and the surface of the arm 1 form the same plane, and thus are substantially flat. As a result, dust, snow, dust, and the like can be prevented from accumulating in the sensor window 101, so that malfunctions of the optical sensor 71 due to a decrease in light transmitted through the sensor window 101 are reduced.

  Here, it is preferable that there is no gap between the protrusion 2a and the opening 1a in a state where the protrusion 2a is fitted in the opening 1a. Since there is no gap, dust or the like caught in the gap can cover the sensor window 101 and corrosion of the arm 1 due to storage of rainwater or the like in the gap can be prevented.

  Further, the surface of the protrusion 2a may protrude with respect to the surface of the arm 1 as shown in FIG. 10, for example, in a state where the protrusion 2a and the opening 1a are fitted. Since the protrusion 2a has a convex shape with respect to the surface of the arm 1, accumulation of dust and the like can be prevented. FIG. 10A is a top view showing a configuration of a portion including the sensor window of the lighting apparatus shown in FIG. 1, and FIG. 10B is a cross-sectional view taken along the line D-D in FIG. FIG. 10C is a cross-sectional view taken along the line E-E in FIG. 11A is a top view showing another configuration of the portion including the sensor window of the lighting apparatus shown in FIG. 1, and FIG. 11B is a FF in FIG. 11A. FIG. 11C is a cross-sectional view taken along line arrow, and FIG. 11C is a cross-sectional view taken along line GG in FIG.

  In the configuration shown in FIGS. 10A to 10C, the protrusion 2 a protrudes from the surface of the arm 1. Further, as shown in FIG. 10C, the upper end surface of the protrusion 2a is formed so that the cross section along the longitudinal direction (EE line direction) of the arm 1 has a curved shape.

  Or in the structure shown to (a)-(c) of FIG. 11, it protrudes with respect to the surface of the arm 1, and the projection part 2a on the projection part 2a which forms the same plane as the surface of the arm 1. FIG. A raised portion 2b may be provided. The raised portion 2b is a hemispherically raised portion, and is formed substantially at the center of the upper end surface of the protruding portion 2a.

[Embodiment 2]
Another embodiment of the present invention is described below with reference to FIG. For convenience of explanation, members having the same functions as those described in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

  FIG. 12 is a diagram illustrating a configuration of the cover 5 of the lighting fixture according to the second embodiment of the present invention, in which (a) is a side view illustrating a portion of the cover 5 that covers the power supply unit 7, and (b) is a diagram. FIG. 6 is a top view showing a portion of the cover 5 that covers the power supply unit 7.

  The present embodiment is applied to the lighting fixtures 300 and 400 according to the first and second embodiments, and as shown in FIGS. 12A and 12B, the power supply unit that covers the power supply unit 7 in the cover 5. Striped groove portions 51 and 52 and drain grooves 53 and 54 are provided on the inner surface of the covering portion 50.

  As shown in FIG. 12B, the drain grooves 53 (water channels) are formed one by one along the lower ends of both inner side surfaces (inner side surfaces) of the power supply unit covering portion 50. The drainage grooves 54 (water channels) are formed so that both ends thereof are connected to one end side of each drainage groove 53 and along the end portion of the power supply unit covering portion 50. A drain hole 5 a is formed at each end of the drain groove 53 on the drain groove 54 side.

  As shown to (a) of FIG. 12, the striped groove part 51 is comprised from the several groove | channel formed in the inner surface in the power supply unit coating | coated part 50 so that it might extend linearly from an opening part to a bottom face. . The striped groove portion 52 extends linearly between the inner side surfaces in a region inside the drainage grooves 53 and 54 on the bottom surface inside the power supply unit covering portion 50 (a region where the drainage grooves 53 and 54 are not provided). It is comprised from the some groove | channel formed in this way.

  The striped groove portions 51 and 52 may be formed not only on the inner surface of the power supply unit covering portion 50 but also on the outer surface.

  The cover 5 configured as described above has striped groove portions 51 and 52 formed on at least the inner surface of the power supply unit covering portion 50. Thereby, since the striped groove portions 51 and 52 form striped irregularities, even if foreign matters such as insects and dust enter the power supply unit covering portion 50, it can be made difficult to see from the outside. Moreover, since the incidence of light on the power supply unit 7 is suppressed by the striped groove portions 51 and 52, it is possible to prevent the power supply unit 7 from being deteriorated.

  Moreover, since the lighting fixtures 300 and 400 are installed outdoors, water enters the inside through a gap formed between the body 2 and the cover 5 caused by aging, or a temperature difference between the inside and the outside. Water may accumulate in the interior due to condensation inside. On the other hand, in the cover 5, drainage grooves 53 and 54 are formed in an area where the striped groove portion 52 is not provided on the inner bottom surface of the power supply unit covering portion 50. In addition, the lighting fixtures 300 and 400 are installed so as to be inclined so that the front end portion is located on the upper side and the power unit covering portion 50 is located on the lower side. As a result, the drain grooves 53 and 54 serve as water passages for securing a water flow path, and the water in the cover 5 can be collected. Then, the drain hole 5a discharges the water collected by the drain grooves 53 and 54 to the outside. Therefore, the water accumulated inside the lighting fixtures 300 and 400 can be efficiently discharged.

  The drain hole 5a is formed only in the drain groove 53, but may be formed in the drain groove 54 as well. As a result, the water that has not been completely discharged from the drain hole 5 a of the drain groove 53 and has flowed into the drain groove 54 can be discharged from the drain hole 5 a of the drain groove 54. Therefore, the water accumulated inside the lighting fixtures 300 and 400 can be discharged more efficiently.

[Embodiment 3]
The following will describe still another embodiment of the present invention with reference to FIG. For convenience of explanation, members having the same functions as those described in the first and second embodiments are denoted by the same reference numerals and description thereof is omitted.

  FIG. 13 is a diagram showing a configuration around the power supply unit 7 of the lighting fixture 300 shown in FIG. 1, wherein (a) is a perspective view of the state in which the cover 5 is attached to the body 2, and (b) is a power supply. It is a perspective view which shows the dripping of the water from the unit 7 to the cover 5 in the state which removed the cover 5, (c) is a perspective view of the state which removed the cover 5. FIG.

  The lighting fixture of this Embodiment is also comprised similarly to the lighting fixture of Embodiment 1 and 2 fundamentally. In the present embodiment, as shown in FIGS. 13B and 13C, a wiring stopper 90 is provided on the power box lower lid 72 a forming the power unit 7. The wiring stopper 90 has a plate-like shape that protrudes outward from the outer wall relative to the inner wall where the reflecting portion 80 of the power supply box lower lid 72a is formed. In a state in which the arm 1, the body 2, and the power supply unit 7 are attached, the wiring cable 91 is arranged along the curved portion of the arm 1, and through the hole formed in the joint portion of the body 2 and the cover 5, It extends toward. The wiring cable 91 is bent at the wiring stopper 90 on the way to the power supply unit 7 and then enters the power supply unit 7. Here, in the wiring stopper 90, the wiring cable 91 is bent so as to be convex toward the side opposite to the body 2, that is, the cover 5, thereby stopping the movement of the power supply unit 7. It has been.

  Further, the cover 5 is provided with a drain hole 5a. The drain hole 5a is provided at a position that becomes the lowermost end of the luminaire except for the arm 1 when the luminaire with the cover 5 attached thereto is attached to a column or the like.

  The wiring stopper 90 also serves as a water trap and stores water. The water stored in the wiring stopper 90 is dripped onto the cover 5 from the portion where the wiring cable 91 is bent into a convex shape. The dropped water is discharged to the outside of the lighting fixture through the drain hole 5a formed in the cover 5. Thereby, it is possible to prevent water from entering the power supply unit 7.

[Summary]
A lighting fixture according to aspect 1 of the present invention includes a light emitting element, a light capturing unit (sensor window 101) that captures light, and light that senses ambient brightness based on the light captured from the light capturing unit. A sensor 71, a lighting circuit 70 for controlling the lighting of the light emitting element (LED3) based on ambient brightness sensed by the light sensor 71, and a storage box for housing the light sensor 71 and the lighting circuit 70 ( And the storage box has a reflecting portion 80 for reflecting the light taken in from the light taking-in portion to the optical sensor 71.

  According to said structure, when producing a lighting fixture using the storage box which accommodated both the power supply and the optical sensor 71, it is not necessary for the light taking-in part and the optical sensor 71 to adjoin. For this reason, the restrictions on the layout in the storage box of the light sensor 71 and the lighting circuit 70 with respect to the light capturing portion are eased. Therefore, the freedom degree of design of a lighting fixture can be improved. Further, the light can be efficiently taken into the optical sensor 71 by reflecting the light by the reflecting unit 80 and guiding the light to the optical sensor 71.

  The lighting fixture which concerns on aspect 2 of this invention is the said aspect 1, The said storage box may have translucency.

  According to the above configuration, for example, even when dust, snow, dust, or the like adheres to the light capturing portion and light is not sufficiently captured from the light capturing portion, the light is transmitted through the storage box. The light sensor 71 can be reached. Therefore, when the sun rises and the surroundings of the luminaire become bright, the light transmitted through the storage box enters the optical sensor 71, and the luminaire can be reliably turned off.

  A lighting fixture according to aspect 3 of the present invention further includes a body 2 made of an insulating material to which the light emitting element and the storage box are attached, and an arm 1 that supports the body 2 in the aspect 1 or 2. The arm 1 has an opening 1a, the body 2 has a protrusion 2a, and the light receiving portion is formed by fitting the protrusion 2a into the opening 1a, and the protrusion 2a. The surface of the arm 1 may form the same plane as the surface of the arm 1 or may protrude from the surface of the arm 1.

  According to said structure, in the state which the protrusion part 2a fitted to the opening part 1a, the surface of the protrusion part 2a and the surface of the arm 1 are on the same plane, and it becomes substantially flat or the protrusion part 2a. This surface protrudes with respect to the surface of the arm 1. As a result, dust, snow, dust, and the like can be prevented from accumulating in the light capturing portion, so that malfunctions of the optical sensor 71 due to a decrease in light transmitted through the light capturing portion are reduced.

  The lighting fixture according to aspect 4 of the present invention further includes a cover 5 that covers the storage box in the above aspects 1 to 3, and the cover 5 is provided with striped irregularities at least on the inner surface of the portion that covers the storage box. It may be done.

  According to said structure, even if foreign materials, such as an insect and dust, penetrate | invade inside the part which covers a storage box, it can be made hard to see from the outside. Moreover, since the incidence of light on the storage box is suppressed by the striped groove portions 51 and 52, the optical sensor 71 and the lighting circuit 70 stored in the storage box can be prevented from being deteriorated.

  In the lighting device according to aspect 5 of the present invention, in the above aspect 4, the cover 5 discharges water flowing into the water channel (drainage grooves 53 and 54) on the inner surface of the cover 5 and water flowing into the water channel to the outside. It may have a drain hole 5a.

  According to said structure, when the water in the cover 5 flows into a water channel, the drain hole 5a discharges the water which flowed into the water channel outside. Thereby, the water collected in the inside of a lighting fixture can be discharged | emitted efficiently.

  A lighting fixture according to aspect 6 of the present invention is the lighting apparatus according to aspect 1 described above, wherein the cover covers the storage box, the wiring cable 91 is arranged from the outside to the storage box, and is provided in the storage box. And the wiring cable 91 is fixed to the wiring stopper 90 so as to be convex toward the cover 5, and the cover 5 is attached to the inner surface of the cover 5. You may have the drainage hole 5a which discharges the flowing water.

  According to the above configuration, the water stored in the wiring stopper 90 is dropped onto the cover 5 from the portion where the wiring cable 91 is bent into a convex shape along the wiring cable 91. The dropped water is discharged to the outside of the lighting fixture through the drain hole 5a formed in the cover 5. Thereby, it is possible to prevent water from entering the storage box.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

  The present invention is an illumination device that senses ambient brightness with a light sensor and automatically controls turning on and off of a light source unit according to the brightness, and uses a case that houses both a power source and a light sensor Can be used.

DESCRIPTION OF SYMBOLS 1 Arm 1a Opening part 2 Body 2a Protrusion part 5 Cover 5a Drain hole 51, 52 Striped groove part (unevenness)
53, 54 Drainage (water channel)
70 lighting circuit 71 optical sensor 72a power box lower lid (storage box)
72b Power box top cover (storage box)
80 Reflecting portion 81 First reflecting portion 82 Second reflecting portion 83 Third reflecting portion 90 Wiring stopper 91 Wiring cable 101 Sensor window (light capturing portion)

Claims (6)

A light emitting element;
A light capturing section for capturing light;
An optical sensor that senses ambient brightness based on the light captured from the light capturing unit;
A lighting circuit that controls lighting of the light emitting element based on ambient brightness sensed by the light sensor;
A storage box for storing the light sensor and the lighting circuit;
The said storage box has a reflection part which reflects the light taken in from the said light taking-in part to the said optical sensor, The lighting fixture characterized by the above-mentioned.   The lighting device according to claim 1, wherein the storage box has translucency. The light emitting element and the storage box are attached, and a body made of an insulating material;
An arm for supporting the body;
The arm has an opening;
The body has a protrusion;
The light capturing portion is formed by fitting the protrusion to the opening,
The lighting device according to claim 1, wherein the surface of the protruding portion forms the same plane as the surface of the arm, or protrudes with respect to the surface of the arm. A cover for covering the storage box;
The lighting device according to any one of claims 1 to 3, wherein the cover is provided with striped irregularities on an inner surface of at least a portion covering the storage box. The cover is
A water channel through which water flows on the inner surface of the cover;
The lighting fixture according to claim 4, further comprising a drain hole for discharging water flowing into the water channel to the outside. A cover covering the storage box;
A wiring cable arranged from the outside to the storage box;
Provided in the storage box, further comprising a wiring stopper for stopping the wiring cable;
The wiring cable is fixed to the wiring stopper so as to be convex toward the cover side,
The lighting apparatus according to claim 1, wherein the cover has a drain hole for discharging water flowing on an inner surface of the cover.

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