JP6497515B2 - Lighting device - Google Patents

Description

  Embodiments described herein relate generally to a lighting device including a light blocking body that blocks light traveling in a predetermined light blocking direction.

  2. Description of the Related Art Conventionally, as a lighting device, for example, there is a road lamp that illuminates a road by being attached to a pole erected on the side of the road or the like. In this road light, for example, an LED or the like is used as a light source, and the thickness is being reduced.

  In addition, in order to prevent glare by the lighting device, it is sometimes necessary to block light traveling in a predetermined light blocking direction such as a roadside direction. In such a case, generally, a plate-shaped light shielding plate is disposed below the translucent cover that emits light provided on the lower surface of the casing of the lighting device.

  Since the light shielding plate disposed outside the housing can be arbitrarily set in height and shape, it is possible to arbitrarily set the light shielding effect, but the height of the lighting device including the light shielding plate is increased, It cannot meet the demand for thinner lighting devices.

  In addition, there is an illuminating device in which a reflection plate that reflects light from a light source in a predetermined direction is provided in a housing, and this reflection plate also functions as a light-shielding plate that blocks light traveling in a predetermined light-shielding direction. Yes.

  However, when a reflector (light-shielding plate) is provided in the housing, it is not possible to secure a sufficient height of the reflector (light-shielding plate) in consideration of thinning of the housing. Can't block light.

JP 2014-127420 A

  The problem to be solved by the present invention is to provide an illuminating device capable of reliably shielding light in a predetermined light shielding direction even when a light shielding body is built in a thin casing.

The illumination device of the embodiment includes a housing, a plurality of light sources, and a light shielding body . The housing has an opening and a plurality of light source mounting portions on the inner surface facing the opening. The light source is attached to each of the plurality of light source attachment portions in the housing. The light-shielding body is provided with a plurality of insertion openings through which a plurality of light sources are inserted. And a light-shielding plate having a second light-shielding part protruding from the tip of the first light-shielding part to the light source side, and disposed in the housing.

  According to the present invention, even when a light shielding body is built in a thin casing, it can be expected that light is reliably shielded in a predetermined light shielding direction.

It is sectional drawing of the illuminating device which shows one Embodiment. It is a perspective view of an illuminating device same as the above. It is a perspective view of an illuminating device same as the above. It is a perspective view of the decomposition | disassembly state of an illuminating device same as the above. It is a perspective view of the light-shielding body of an illuminating device same as the above. It is the bottom view which attached the light-shielding body to the housing | casing of an illuminating device same as the above.

  Hereinafter, an embodiment will be described with reference to FIGS. 1 to 6.

  As shown in FIGS. 2 and 3, the lighting device 10 is, for example, a road lamp. The road lamp is attached to the tip of a ball installed on the side of the road and illuminates the road.

  As shown in FIGS. 1 to 6, the illumination device 10 includes a housing 11, a light source 12 disposed in the housing 11, a wiring cover 13, a light shield 14, and a power supply unit (not shown). Note that the power supply unit may be disposed not in the housing 11 but in a pole. The light source 12 is illustrated in FIG. 1, but is not illustrated in other drawings.

  The housing 11 includes a lower housing 20, an upper housing 21, and a pole attachment portion 22 attached to the lower housing 20. The casing 11 is formed in a thin shape whose dimension in the vertical direction (thickness direction) is smaller than the dimensions in the front-rear direction and the width direction.

  A rear portion of the lower housing 20 and a rear portion of the upper housing 21 are rotatably connected by a hinge 23. As a result, the upper housing 21 is movable upwardly with respect to the lower housing 20 around the hinge 23. In addition, the latch member 24 is attached to the front end of the upper housing 21, and the latch member 24 is caught by the lower housing 20 with the upper housing 21 being closed to the lower housing 20. The state closed to the lower housing 20 is maintained. The upper casing 21 can be opened by operating the latch member 24 to remove the catch from the lower casing 20. Packing is interposed between the peripheral portions of the lower housing 20 and the upper housing 21, and the waterproofness inside the housing 11 is ensured.

  The lower housing 20 is integrally formed of a metal such as aluminum die casting.

  The lower casing 20 has a substantially square opening frame 26 formed in the front region from the middle in the front-rear direction of the lower casing 20, and a substantially rectangular opening 27 is formed inside the opening frame 26. Has been. The opening frame 26 is formed so as to expand downward. A translucent cover 28 that closes the opening 27 is attached to the upper side of the opening frame 26 via a packing 29. The translucent cover 28 is made of, for example, a transparent glass plate.

  On the lower housing 20, a power supply unit is mounted between the opening 27 and the pole mounting portion 22 in the region from the vicinity of the middle in the front-rear direction of the lower housing 20 to the rear side.

  The upper housing 21 is integrally formed of a metal such as aluminum die casting.

  An annular partition wall 31 projects from the lower surface of the upper housing 21. When the upper casing 21 is closed to the lower casing 20, the partition wall 31 is in close contact with the lower casing 20 via the packing, and a sealed space is formed in the inner region of the partition wall 31.

  On the inner side of the partition wall 31 of the upper housing 21, a plurality of light sources 12 are provided on the inner surface facing the opening 27 of the lower housing 20 in a front region from the middle in the front-rear direction of the upper housing 21. A plurality of light source attachment portions 32 are provided for attachment.

  In the present embodiment, the light source mounting portions 32 are provided in three rows in the left-right direction of the casing 11, two in the front-rear direction in the center row, and three in the front-rear direction in the left-right row. Further, the three light source attachment portions 32 in the left and right rows are arranged at the same position in the front-rear direction, but the two light source attachment portions 32 in the center row are shifted in the front-rear direction with respect to the three light source attachment portions 32 in the left and right rows. Arranged in position.

  The light source mounting portion 32 has a base portion 33 that protrudes from the inner surface of the upper housing 21 and a mounting surface 34 that is provided on the surface of the base portion 33 and attaches the light source 12. The mounting surface 34 of the base portion 33 is inclined toward a predetermined light irradiation direction. The predetermined light irradiation direction is the front side direction of the lighting device 10 and is the direction toward the center in the width direction of the road. A recess 35 is formed inside the attachment surface 34.

  A plurality of bosses 36 for projecting and fixing the wiring cover 13 and the light shielding body 14 with screws are provided in the peripheral area of the light source mounting portion 32.

  As shown in FIG. 1, the light source 12 includes a light emitting module 40 and a lens 41 combined with the light emitting module 40.

  The light emitting module 40 includes a substrate 42 and a light emitting unit 43 provided on the surface of the substrate 42. The light emitting module 40 is configured by a COB (Chip On Board) module. A plurality of LEDs 44 as light emitting elements are mounted on the surface of the substrate 42, and a phosphor layer 46 is filled in a surrounding portion 45 surrounding the LEDs 44. The light source 12 may be an SMD (Surface Mount Device) package in which an LED is housed in a package and sealed with a phosphor layer. The substrate 42 of the light emitting module 40 is disposed in the recess 35 of the light source mounting portion 32, and is thermally coupled to the light source mounting portion 32 by being fastened and fixed to the light source mounting portion 32 by a plurality of screws. . A connector (not shown) is mounted on the surface of the substrate 42, and the connector and the power supply unit are electrically connected by an electric wire.

  The lens 41 is integrally formed of a transparent resin or glass. The lens 41 has a flange portion 47 attached to the light source attachment portion 32 and a lens portion 48 protruding from the flange portion 47. The flange portion 47 is disposed around the mounting surface 34 of the light source mounting portion 32 and is fixed to the light source mounting portion 32 with screws. The lens portion 48 is a convex lens that protrudes from the flange portion 47 into a hemispherical shape. The lens unit 48 is integrally formed so that two convex lenses are arranged in the left-right direction. With this lens configuration, the light distribution that spreads light in the left-right direction of the lighting device 10 and along the longitudinal direction of the road It has characteristics. The light emitted from the light emitting unit 43 of the light emitting module 40 enters the lens 41 and is emitted by the lens 41 in a predetermined light distribution direction.

  As shown in FIGS. 1 and 4, the wiring cover 13 is formed of a metal plate. The wiring cover 13 has a quadrangular shape, and an edge 50 is bent at the periphery. The wiring cover 13 is formed with a rectangular insertion opening 51 through which the light source 12 and the light source mounting portion 32 are inserted. The wiring cover 13 is fixed to the plurality of bosses 36 by screwing screws 53 respectively inserted through the four corner insertion holes 52 into the bosses 36 of the upper housing 21. A wiring space 54 is formed between the wiring cover 13 and the inner surface of the upper housing 21, and wires connecting the light emitting module 40 and the power supply unit are wired in the wiring space 54. That is, the wiring space 54 is covered by the wiring cover 13.

  As shown in FIGS. 1 to 6, the light shield 14 includes a mounting plate 60 attached to the upper housing 21 and a plurality of light shielding plates 61 attached to the mounting plate 60. The mounting plate 60 and the plurality of light shielding plates 61 are each formed of a metal plate, and a black coating is applied to the surface to suppress reflection of light.

  The mounting plate 60 has a quadrangular shape, and an edge 62 is bent at the periphery. The mounting plate 60 is formed with a rectangular insertion opening 63 through which the plurality of light sources 12 and the light source mounting portion 32 are inserted. Of the four corners of the mounting plate 60, a pair of mounting holes 64 are formed on one diagonal line, and a pair of relief holes 65 are formed on the other diagonal line. The mounting hole 64 has a large-diameter hole through which the head of the screw 53 can be inserted, and a small-diameter hole through which the screw shaft of the screw 53 can be inserted but the head cannot be inserted, and is formed in a so-called daruma hole shape. Has been. The escape hole 65 can be inserted through the head of the screw 53, and is formed as a long long hole along the direction in which the large diameter hole and the small diameter hole of the mounting hole 64 are arranged. The mounting plate 60 is fastened to the boss 36 of the upper housing 21 together with the wiring cover 13 by screws 53 that pass through the pair of mounting holes 64.

  The light shielding plate 61 is formed by pressing a single metal plate into a predetermined shape. The light shielding plate 61 is attached to each insertion opening 63 of the attachment plate 60. The light shielding plate 61 includes a mounting portion 66, a first light shielding portion 67 bent at a substantially right angle from the mounting portion 66, and a substantially right angle from the tip of the first light shielding portion 67 toward the direction opposite to the mounting portion 66. A second light-shielding portion 68 that is bent at a right angle, a third light-shielding portion 69 that is bent substantially at right angles from both sides of the second light-shielding portion 68 to both sides of the first light-shielding portion 67, and the third The light-shielding portion 69 is provided with a bent portion 70 that is bent substantially at right angles along the first light-shielding portion 67.

  The attachment portion 66 is screwed to the upper surface of the attachment plate 60 at the edge of the insertion opening 63.

  The first light shielding part 67 protrudes downward through the insertion opening 51 and is disposed so as to rise from the side in the predetermined light shielding direction with respect to the light source 12. The predetermined light shielding direction is a rear side direction of the lighting device 10 and a roadside direction. The direction in which the first light shielding portion 67 rises with respect to the light source 12 may be perpendicular to the surface of the mounting plate 60 or may be inclined toward the light source 12 side. The height at which the first light shielding portion 67 rises with respect to the light source 12 is appropriately set according to the necessary light shielding effect in the light shielding direction.

  The second light shielding part 68 faces the opening 27 of the lower housing 20 and protrudes from the tip (lower end) of the first light shielding part 67 toward the light source 12. The direction in which the second light shielding part 68 protrudes from the front end of the first light shielding part 67 toward the light source 12 may be parallel to the opening 27, or the front end side (front end side) may be inclined downward. The amount of protrusion by which the second light shielding portion 68 projects from the tip of the first light shielding portion 67 toward the light source 12 is appropriately set according to the light shielding effect in the necessary light shielding direction.

  The third light shielding part 69 rises with respect to the light source 12 and is disposed on both sides of the first light shielding part 67 and the second light shielding part 68.

  The bent portion 70 is bent along the first light-shielding portion 67 from the edge of the third light-shielding portion 69, so that a gap between the first light-shielding portion 67 and the third light-shielding portion 69 is obtained. To prevent light leakage.

  The power supply unit also receives AC power, converts this AC power into predetermined DC power, supplies it to each light emitting module 40, and causes the light emitting unit 43 to emit light.

  In the illuminating device 10 configured as described above, the light emitting unit 43 emits light by supplying power to the light emitting module 40 from the power supply unit, and the light from the light emitting unit 43 enters the lens 41 and is predetermined by the lens 41. The light is emitted in the direction of light distribution.

  Since the light source 12 is attached to the light source attachment portion 32 in an inclined manner toward the predetermined irradiation direction, the light emitted from the lens 41 is mainly in the front side direction of the lighting device 10 and to the center in the width direction of the road. Irradiated in the direction toward. Furthermore, since the lens portion 48 of the lens 41 is integrally formed so that two convex lenses are arranged in the left-right direction, the light emitted from the lens 41 is the left-right direction of the lighting device 10 and the longitudinal direction of the road It is also irradiated in a wide direction along.

  Among the light emitted from the lens 41, a part of the light travels in the rear direction, which is the light shielding direction of the illumination device 10. The light traveling from the lens 41 toward the rear side is shielded by the first light shielding part 67 and the second light shielding part 68 of the light shielding plate 61 and is shielded by the third light shielding parts 69 on both sides.

  At this time, since the casing 11 is thin, an angle and a range that can be shielded by only the first light shielding portion 67 disposed in the housing 11 are limited, but in addition to the first light shielding portion 67, By providing the two light shielding portions 68, the angle and range in which light can be shielded can be increased, and light shielding in the rearward direction can be ensured.

  Further, when both side areas of the first light shielding part 67 and the second light shielding part 68 are opened, the both sides of the first light shielding part 67 and the second light shielding part 68 are inclined rearwardly. Although light leaks, light leakage in the oblique rear direction can be surely prevented by providing the third light-shielding portions 69 on both sides of the first light-shielding portion 67 and the second light-shielding portion 68. .

  Further, since the light shielding body 14 is provided with a plurality of insertion openings 63 through which the plurality of light sources 12 are respectively inserted in the mounting plate 60, and a light shielding plate 61 is provided for each of the plurality of insertion openings 63, the light sources 12 are individually shielded. It is possible to ensure light shielding in the rear direction.

  In addition, the light shield 14 can be easily attached to the housing 11 by using a saddle hole-like attachment hole 64 provided in the attachment plate 60. For example, when the lighting device 10 is installed, the light shielding function is not required and the light shielding member 14 is not attached, but when the light shielding function is necessary due to a change in the environment thereafter, the light shielding member 14 is attached to the existing lighting device 10. Easy to install.

  The light shielding body 14 may be formed by integrally cutting the light shielding plate 61 from the mounting plate 60.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Lighting equipment
11 Enclosure
12 Light source
14 Shading body
27 opening
32 Light source mounting
60 Mounting plate
61 Shading plate
63 Insertion opening
67 1st light shielding part
68 Second light shield
69 3rd shading part

Claims (2)

A housing having a plurality of light source mounting portions on an opening and an inner surface facing the opening;
A plurality of light sources respectively attached to the plurality of light source attachment portions in the housing;
A plurality of insertion openings through which the plurality of light sources are inserted are provided, a mounting plate that is attached to the inner surface of the housing, and a plurality of the insertion openings of the mounting plate that are provided for each of the plurality of insertion openings, and that has a predetermined light shielding against the light source. first light-shielding portion that rises from the direction of the side, and a light shielding plate having a second light-shielding portion projecting to the light source side from the distal end of the first light-shielding portion, the light-shielding disposed in the housing With the body ;
An illumination device comprising: The lighting device according to claim 1, wherein the light shielding plate includes third light shielding portions that are raised from the light source and provided on both sides of the first light shielding portion and the second light shielding portion .

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