JP6024909B2 - Louver and lighting device using the same - Google Patents

Description

  The present invention relates to a louver attached to a lighting device and a lighting device using the louver.

  2. Description of the Related Art Conventionally, an illumination device is known that includes an optical sensor that senses ambient brightness and has a light source unit having an automatic blink function. For example, in a security light as a lighting device, control is performed such that the light source unit automatically turns on when the surroundings become dark and automatically turns off when the surroundings become bright. As such an illuminating device, an illuminating device using a light emitting element such as a light emitting diode (hereinafter referred to as “LED”) as a light source is conventionally known, and is disclosed in Patent Document 1, for example.

  The illumination device (security light) described in Patent Literature 1 includes a light source unit, a mounting member to which the light source unit is attached, a lighting device that controls lighting of the light source unit, and a light-transmitting cover that covers the light source unit and the lighting device. A member. The lighting device includes a base portion that closes the opening of the cover member and an arm that is attached to the base portion. And this illuminating device is attached to poles, such as a utility pole installed in the road surface by the arm.

  In this illuminating device, when the outdoors becomes dark, power is supplied to the light source unit via the lighting device by the detection output of the optical sensor of the lighting device, and the light emitting element is turned on. Further, when the outdoors becomes bright, power is cut off by the detection output of the optical sensor, and the light emitting element is turned off.

JP 2012-216477 A

  As described above, the illumination device as in the conventional example is attached to a pole such as a utility pole and used to illuminate the road. However, in a place where a private house is built on the side of the road, there is a possibility that a complaint may come out because light from the lighting device enters the window of the private house. Therefore, in order to solve this problem, a louver that blocks light in the width direction of the road has been used for the lighting device.

  Here, the lighting device does not necessarily require a louver, and the louver may not be necessary depending on the installation location of the lighting device (for example, a place where a private house is not built in the vicinity). Therefore, it is required that the louver can be easily attached and detached at the construction site according to the installation location of the lighting device.

  However, since the conventional louver is attached to the lighting device by, for example, screwing or the like, a tool is required. Further, in the conventional louver, once the louver is attached, it is difficult to remove the louver because it must be removed using a tool. That is, the conventional louver has a problem that it cannot be easily attached and detached at the construction site.

  The present invention has been made in view of the above points, and an object thereof is to provide a louver that can be easily attached and detached at a construction site and an illumination device using the louver.

  The louver of the present invention is a louver attached to a lens unit that controls light distribution of a light source having a plurality of light emitting elements, wherein the lens unit includes a plurality of lenses that control the light distribution of light emitted from the corresponding light emitting elements. Arranged along an arbitrary first direction, a main body that blocks light emitted from each light emitting element, and a gap between the adjacent lenses provided in the main body in a second direction intersecting the first direction And a first leg portion slidably fitted along the first leg portion.

  In this louver, it is preferable to provide a second leg portion that can be freely bent between a state where it can pass through the gap and a state where it cannot pass through at the tip of the first leg when inserted into the gap.

  In this louver, it is preferable that a third leg portion for restricting movement of the first leg portion in the second direction is provided at a rear end when the louver is inserted into the gap in the first leg portion.

  An illumination device of the present invention includes any one of the above louvers, the light source, the lens unit, and a housing that houses the light source and the lens unit.

  In the present invention, the first leg can be slidably fitted into the gap of the lens unit. Therefore, in the present invention, a tool is not required to attach / detach the louver, and the louver can be easily attached / detached at the construction site.

It is a figure which shows embodiment of the louver and lighting device which concern on this invention, and is a perspective view of the state which removed the cover. It is a disassembled perspective view of an illuminating device same as the above. It is a figure which shows the light source in an illuminating device same as the above, (a) is a top view, (b) is a side view. It is a figure which shows the lens unit in an illuminating device same as the above, (a) is a top view, (b) is a side view. (A)-(e) is a figure which shows a louver same as the above. It is a figure explaining the method of attaching a louver to a lens unit, (a) is a principal part perspective view before attaching a louver, (b) is a principal part perspective view of the state which attached the louver, (c) is a figure. It is principal part sectional drawing of the state which attached the louver.

  Hereinafter, embodiments of a louver and a lighting device according to the present invention will be described with reference to the drawings. First, an embodiment of a lighting device according to the present invention will be described. As shown in FIGS. 1 and 2, the present embodiment includes a light source 1, a lens unit 2, a body 3, a cover 4, an arm 5, and a power supply unit 6. In the present embodiment, the body 3 and the cover 4 are combined to form a housing that houses the light source 1, the lens unit 2, and a part of the arm 5 (a support portion 5 </ b> A described later). Further, as shown in FIG. 1, the present embodiment can be used as a street light by being attached to a column A1 (for example, a steel pipe pole or a utility pole) installed on the ground such as a side of a road (not shown). .

  As shown in FIGS. 3A and 3B, the light source 1 includes a plurality of (eight in the figure) LEDs (light emitting elements) 10 on the surface of a long substrate 11 (the lower surface in FIG. 3B). To implement. Each LED 10 is formed, for example, by sealing an LED chip that emits blue light with a sealing member made of a synthetic resin that has translucency and is mixed with a fluorescent material. Accordingly, a part of the light emitted from the LED chip is wavelength-converted by the fluorescent material, and the wavelength-converted light (for example, yellow light) and the light that has not been wavelength-converted (blue light) are mixed. White light is emitted. Of course, each LED 10 is not limited to one that emits white light, and may emit light that is different from white, such as blue.

  In the present embodiment, each LED 10 is mounted at a certain interval along the longitudinal direction of the substrate 11 (left-right direction in FIG. 3B). A conductor 12 serving as a power feeding path to each LED 10 is printed on the surface of the substrate 11. In addition, although omitted in the drawing, in practice, the conductor 12 is patterned so that the LEDs 10 are connected in series, parallel, or series-parallel. Furthermore, a terminal block 13 electrically connected to the conductor 12 is mounted on one end in the longitudinal direction of the surface of the substrate 11 (left end in FIG. 3B). One end of a lead wire 130 is connected to the terminal block 13. In addition, a plug 131 for connecting to a receptacle 61 of the power supply unit 6 described later is provided at the other end of the lead wire 130.

  On both sides along the longitudinal direction of the substrate 11, a plurality (four in the drawing) of mounting holes 110 are formed in a semicircular shape. The light source 1 can be fixed to the arm 5 by superimposing each mounting hole 110 on each mounting hole 500 of the arm 5 described later and tightening the mounting screw S1.

  On the back surface of the substrate 11 (the upper surface in FIG. 3B), a long copper foil 14 is provided along the longitudinal direction. The copper foil 14 is electrically insulated from the conductor 12. When the substrate 11 and the arm 5 are in contact with each other through the copper foil 14, the heat generated by each LED 10 is efficiently conducted to the arm 5. Of course, a foil other than the copper foil 14 may be provided on the back surface of the substrate 11 as long as the heat generated by each LED 10 can be efficiently conducted to the arm 5. Needless to say, even if the copper foil 14 is not provided, the heat generated by each LED 10 can be conducted to the arm 5.

  The lens unit 2 is a resin molded product made of a resin material such as PMMA resin, for example, and controls the light distribution of the light emitted from each LED 10. As shown in FIGS. 4A and 4B, the lens unit 2 includes a plurality of (eight in the drawing) lenses 20 corresponding to the respective LEDs 10 and a long mounting plate in which the lenses 20 are integrally formed. 21. In the present embodiment, the lenses 20 are integrally formed with a certain interval along the longitudinal direction of the mounting plate 21 (left-right direction in FIG. 4A, first direction).

  Each lens 20 controls the light distribution of the light emitted from the corresponding LED 10, and includes a lens body 200 and a pair of reflecting portions 201 and 202, respectively. The lens body 200 is formed in a bullet shape having a curved surface that is convex in the direction of light emitted from each LED 10. The lens body 200 has a light distribution characteristic that spreads the light emitted from each LED 10 along the width direction of the lens unit 2 (vertical direction in FIG. 4A, second direction).

  On both sides of the lens body 200 (right and left sides in FIG. 4A), prismatic reflecting portions 201 and 202 are integrally formed, respectively. Each of the reflecting portions 201 and 202 has a light distribution characteristic that reflects light emitted from each LED 10 and suppresses spreading in the first direction.

  As described above, the present embodiment is used by being installed, for example, on the roadside column A1. In this case, it is desirable to irradiate light at a wide angle along the traveling direction (second direction) of the vehicle on the road. In this case, in order to avoid unnecessary light irradiation, it is desirable to suppress light irradiation outside the road in the width direction of the road (first direction). Here, in the present embodiment, by using the lens unit 2, it is possible to realize a wide-angle light distribution in the traveling direction of the vehicle on the road, and to suppress the irradiation of light outside the road in the width direction of the road. it can.

  Between the adjacent lenses 20 on the mounting plate 21, a light shielding portion 203 that blocks light emitted from each LED 10 is provided. These light shielding portions 203 can suppress interference of light between adjacent lenses 20. Further, a through-hole 210 for passing the terminal block 13 of the substrate 11 is provided at one end in the longitudinal direction of the mounting plate 21 (left end in FIG. 4A).

  A plurality (two in the figure) of mounting pieces 22 projecting outward in the width direction of the mounting plate 21 (vertical direction in FIG. 4A) are integrally formed on both sides along the longitudinal direction of the mounting plate 21. Is formed. On one side along the longitudinal direction of each mounting piece 22 (the left-right direction in FIG. 4A), a mounting hole 220 is cut out in a semicircular shape. The lens unit 2 is fixed to the arm 5 so as to cover the light source 1 by overlaying each mounting hole 220 on each mounting hole 110 of the substrate 11 and each mounting hole 500 of the arm 5 to be described later and tightening with the mounting screw S1. be able to.

  The body 3 is a box-shaped resin molded product made of, for example, a resin material such as ASA resin, and one surface thereof (the lower surface indicated by the arrow in FIG. 2) is open. As shown in FIG. 2, the body 3 includes a rectangular main portion 30 and an outer wall 31 that falls along the thickness direction (vertical direction indicated by the arrow in FIG. 2) over the entire circumference of the main portion 30. .

  A power supply unit 6 is attached to one end of the body 3 in the longitudinal direction (left end indicated by an arrow in FIG. 2, hereinafter referred to as “tip”). Further, a wiring W1 for connecting the power supply unit 6 and an external power supply (not shown) is connected to the other end in the longitudinal direction of the body 3 (right end indicated by an arrow in FIG. 2, hereinafter referred to as “base end”). A pair of notches 310 are provided for passing through. By passing the wiring W1 through these notches 310, the wiring W1 can be drawn from the inside of the body 3 to the outside. A pair of shafts 32 is provided at the tip of the body 3. Each shaft 32 can be hooked with each hook 40 of the cover 4 to be described later.

  As shown in FIG. 2, a pair of bosses 300 and 301 are provided on the base end side of the inner bottom surface (the lower surface indicated by the arrow in FIG. 2) of the main portion 30. Female threads (not shown) are formed on the inner peripheral surfaces of the bosses 300 and 301. The arm 5 can be fixed to the body 3 by superimposing a mounting hole 502 of the arm 5 to be described later on the boss 300 and tightening with a mounting screw S1. Further, the cover 4 and the arm 5 can be fixed to the body 3 by superimposing the mounting hole 503 of the arm 5 described later on the boss 301 and the mounting hole 410 of the cover 4 described later and tightening with the mounting screw S1.

  As shown in FIG. 2, the cover 4 is a semi-cylindrical resin molded product made of a translucent resin material such as PMMA resin, for example, and has an opening on one side (the upper surface indicated by the arrow in FIG. 2). Yes. The cover 4 is attached to the body 3 to close the opening of the body 3.

  A pair of hooks 40 is provided at the tip of the cover 4. By hooking each hook 40 on each shaft 32 of the body 3, the cover 4 can be rotated about each shaft 32 as a fulcrum. That is, the hooks 40 of the cover 4 and the shafts 32 of the body 3 constitute a hinge.

  A recess 41 that is recessed in the direction along the thickness direction (upward as indicated by the arrow in FIG. 2) is provided at the base end of the cover 4. As shown in FIG. 2, the recess 41 is provided with a mounting hole 410 penetrating in the thickness direction (vertical direction indicated by an arrow in FIG. 2). As described above, the mounting hole 410 is used to fix the cover 4 to the body 3 and the arm 5 using the mounting screw S1.

  The arm 5 is made of a metal plate such as a steel plate. As shown in FIG. 1, the arm 5 is attached to the support column A <b> 1 and supports the body 3. As shown in FIG. 2, the arm 5 is formed by integrally forming a rectangular main plate 50 and a pair of side plates 51. Each side plate 51 rises along the thickness direction (vertical direction indicated by the arrow in FIG. 2) from both sides along the longitudinal direction (front-rear direction indicated by the arrow in FIG. 2) of the main plate 50. Further, when the arm 5 is attached to the column A1, as shown in FIG. 1, the arm 5 is curved so as to be inclined at a certain angle (for example, 60 degrees or more) with respect to the horizontal plane. Hereinafter, a portion of the arm 5 that supports the body 3 is referred to as a support portion 5A, and a portion of the arm 5 that is attached to the support column A1 is referred to as a support column attachment portion 5B.

  As shown in FIG. 2, two pairs of mounting holes 500 penetrating in the thickness direction are provided on both sides along the longitudinal direction of the support portion 5A. These mounting holes 500 are used for fixing the light source 1 and the lens unit 2 to the arm 5 using the mounting screw S1 as described above.

  In the support portion 5A, a circular recess 501 that is recessed in the thickness direction is provided on the base end side of the main plate 50 as shown in FIG. An attachment hole 502 that penetrates in the thickness direction is provided in the center of the recess 501. The mounting hole 502 is used to fix the arm 5 to the body 3 using the mounting screw S1 as described above. In addition, an attachment hole 503 that penetrates in the thickness direction is provided in the vicinity of the recess 501 in the support portion 5A, as shown in FIG. As described above, the mounting hole 503 is used to fix the cover 4 to the body 3 and the arm 5 using the mounting screw S1.

  When the arm 5 is attached to the column A1, as shown in FIG. 1, first, the belt B2 is wound around the column A1 to fix the mounting bracket B1. Thereafter, three mounting holes (not shown) provided in the mounting bracket B1 and three mounting holes 504, 505, and 506 provided on the base end side of the column mounting portion 5B are overlapped, and mounting screws S1 are respectively attached. Tighten. Thereby, the arm 5 can be fixed to the column A1 via the mounting bracket B1 and the belt B2. In the column attachment portion 5B, each side plate 51 is provided with a rectangular slit 510 as shown in FIG. Each slit 510 is used, for example, for passing the belt B2 when the arm 5 is directly attached by winding the belt B2 around a power pole (not shown).

  As shown in FIG. 2, the power supply unit 6 is configured by housing a lighting circuit (not shown) and an optical sensor (not shown) in a case 60. The lighting circuit supplies power to each LED 10 of the light source 1 to emit light (light on). The lighting circuit includes, for example, a conventionally known AC / DC converter that converts AC power supplied from a commercial power source into DC power. In addition, the lighting circuit includes a receptacle 61 connected to an output terminal (not shown). Then, by connecting the plug 131 to the receptacle 61, the lighting circuit and each LED 10 of the light source 1 are electrically connected.

  The case 60 is integrally formed with a tubular daylighting unit 600 for guiding natural light (sunlight) into the case 60. The optical sensor detects natural light guided into the case 60 via the daylighting unit 600, and outputs a detection signal to the lighting circuit when the amount of light is below a threshold value. The lighting circuit supplies power to each LED 10 while the detection signal from the optical sensor is output, and does not supply power to each LED 10 while the detection signal is not output. For this reason, in this embodiment, for example, when the sun goes down and the area becomes dark, each LED 10 is automatically turned on, and when the sun rises and the area becomes bright, each LED 10 is automatically turned off.

  In the present embodiment, the power supply unit 6 is attached to the body 3 by attaching the power supply unit 6 to the main portion 30 of the body 3, but the power supply unit 6 may be externally attached.

  Next, an embodiment of a louver according to the present invention will be described. The louver 7 is made of a resin material such as silicone rubber. As shown in FIGS. 1 and 5, the louver 7 is formed by integrally forming a main body 70, a first leg 71, a second leg 72, and a third leg 73. The main body 70 is formed in a semicircular disk shape, and blocks light along the first direction (longitudinal direction of the lens unit 2) among the light emitted from each LED 10.

  The 1st leg part 71 is provided in the form which protrudes from one surface (upper surface in FIG.5 (e)) of the main body 70. As shown in FIG. As shown in FIG. 6A, the first leg portion 71 extends along the second direction (the width direction of the lens unit 2) intersecting the first direction in the gap 240 between the adjacent lenses 20 of the lens unit 2. Mates slidably. In the present embodiment, the gap 240 is formed between the first reflecting portion 201 of one lens 20 and the second reflecting portion 202 of the other lens 20 among the lenses 20 adjacent to each other.

  As shown in FIG. 5A, the second leg portion 72 is provided at one end in the longitudinal direction of the first leg portion 71 (the tip when inserted into the gap 240, hereinafter referred to as “tip”). . The second leg portion 72 is formed so that one surface thereof (the upper surface in FIG. 5 (e)) is opened and the inside is hollow. Thereby, the 2nd leg part 72 can be bent along the width direction (up-down direction in FIG.5 (b)). In the present embodiment, the second leg portion 72 is freely bendable between a state where it can pass through the gap 240 and a state where it cannot pass.

  As shown in FIG. 5B, the third leg 73 is provided at the other end in the longitudinal direction of the first leg 71 (the rear end when being inserted into the gap 240; hereinafter referred to as “rear end”). It has been. The third leg portion 73 is formed in a triangular shape in plan view so that the dimension in the width direction (vertical direction in FIG. 5B) increases from the front end to the rear end. Thereby, the 3rd leg part 73 controls the movement along the 2nd direction of the 1st leg part 71 so that it may mention later.

  Hereinafter, a method of attaching the louver 7 to the lens unit 2 will be described. The louver 7 is attached to the lens unit 2 with the cover 4 removed (or with the hooks 40 of the cover 4 hooked on the shafts 33 of the body 3). As shown in FIG. 6A, the tip of the second leg 72 is inserted into any gap 240 of the lens unit 2 and is slid. Here, the width of the tip of the second leg portion 72 is slightly smaller than the other portions of the second leg portion 72. For this reason, when the 2nd leg part 72 is pushed in into the clearance gap 240, it can deform | transform into the state which can pass the clearance gap 240. FIG.

  Thereafter, when the first leg portion 71 is pushed in, the louver 7 is attached to the lens unit 2 by fitting the first leg portion 71 into the gap 240 (see FIGS. 6B and 6C). At this time, when the second leg portion 72 is pushed out of the gap 240, it returns from its deformed state to its original state. Therefore, even if stress is applied in the direction in which the first leg portion 71 is pulled out from the gap 240, the second leg portion 72 is caught by the reflecting portions 201 and 202, so that the louver 7 is prevented from coming off.

  Further, by pushing the first leg portion 71 into the gap 240, the width dimension of the third leg portion 73 becomes larger than the width dimension of the gap 240 in the middle of the third leg portion 73. It is caught by the reflection parts 201 and 202. Therefore, even if stress is applied in the direction in which the first leg portion 71 is pushed into the gap 240, the third leg portion 73 is caught by the reflecting portions 201 and 202, so that the louver 7 is prevented from coming off.

  When removing the louver 7 from the lens unit 2, the first leg 71 may be pulled out while the second leg 72 is pinched with a finger and bent.

  As described above, in the present embodiment, the first leg 71 can be slidably fitted into the gap 240 of the lens unit 2. Therefore, in this embodiment, a tool is not required for attaching / detaching the louver 7, and the louver 7 can be easily attached / detached at the construction site according to the installation location of the lighting device.

  In the present embodiment, as already described, the second leg 72 is provided at the tip of the first leg 71 and the third leg 73 is provided at the rear end of the first leg 71. For this reason, it is possible to prevent the louver 7 from falling off the lens unit 2 when a stress in the direction along the sliding direction is applied to the louver 7. In addition, it is arbitrary whether the 2nd leg part 72 or the 3rd leg part 73 is provided.

  In the present embodiment, the reflecting portions 201 and 202 are integrally formed on both sides of the lens body 200, but whether or not the reflecting portions 201 and 202 are provided is arbitrary. Therefore, even if the shape of each lens body 200 is designed so that the first leg portion 71 of the louver 7 can be slidably fitted into the gap between the adjacent lens bodies 200 without providing the reflecting portions 201 and 202. Good.

DESCRIPTION OF SYMBOLS 1 Light source 2 Lens unit 20 Lens 3 Body (housing)
4 Cover (housing)
7 louvers 70 body 71 first leg

Claims (4)

In a louver attached to a lens unit that controls light distribution of a light source having a plurality of light emitting elements,
The lens unit is formed by arranging a plurality of lenses that control the light distribution of light emitted from the corresponding light emitting elements along an arbitrary first direction,
A main body that blocks light emitted by each of the light emitting elements; and a first leg portion that is slidably fitted in a gap between the adjacent lenses provided in the main body along a second direction intersecting the first direction. A louver comprising:   2. The second leg portion that is flexible between a state in which the first leg portion can be passed through and a state in which the first leg portion cannot pass through the gap is provided at the tip when inserted into the gap. Louva.   The third leg portion that restricts the movement of the first leg portion in the second direction at the rear end of the first leg portion when inserted into the gap is provided. The described louver.   An illuminating device comprising: the louver according to claim 1; the light source; the lens unit; and a housing that houses the light source and the lens unit.

Images