JP2020053184A - Lighting equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device capable of improving an appearance. A lighting device (10) includes a light emitting unit (22), a transparent outer cover (23), and an inner cover (24) having a light diffusivity higher than that of the outer cover (23). The outer cover 23 has an outer cover front surface portion 50 facing the light emitting portion 22, and an outer cover side surface portion 51 provided around the outer cover front surface portion 50. The inner cover 24 includes an inner cover front surface portion 60 facing the inner surface of the outer cover front surface portion 50, and an inner cover side surface portion 61 provided around the inner cover front surface portion 60 and facing the inner surface of the outer cover side surface portion 51. Be prepared. The distance L1 between the peripheral portion 60a of the inner cover front portion 60 and the outer cover front portion 50 is the distance L2 between the central region 60b inside the peripheral portion 60a of the inner cover front portion 60 and the outer cover front portion 50. Narrower than. [Selection diagram] Fig. 1

Description

  Embodiments of the present invention relate to a lighting device having a transparent outer cover.

  2. Description of the Related Art Conventionally, in a lighting device in which a light emitting unit is covered with a transparent outer cover, there is an illumination device in which a light diffusing inner cover is arranged inside the outer cover to reduce glare of the light emitting unit.

  When the inner cover is too close to the outer cover, the diffusion effect is low, and when the inner cover is brought into contact with the outer cover or formed integrally, the light extraction efficiency from the outer cover is reduced due to reflection at the interface.

  For this reason, it is preferable to arrange them at intervals, but the shape of the inner cover can be easily grasped from the side surface of the outer cover, and the appearance is impaired.

Japanese Patent No. 6238182

  An object of the present invention is to provide a lighting device that can improve the appearance.

  The lighting device according to the embodiment includes a light emitting unit, a transparent outer cover, and an inner cover having a light diffusing property. The outer cover has an outer cover front portion facing the light emitting portion, and an outer cover side surface portion provided around the outer cover front portion. The inner cover includes an inner cover front portion facing the inner surface of the outer cover front portion, and an inner cover side portion provided around the inner cover front portion and facing the inner surface of the outer cover side portion. The distance between the peripheral part of the inner cover front part and the outer cover front part is smaller than the distance between the central area inside the peripheral part of the inner cover front part and the outer cover front part.

  According to the lighting device of the embodiment, an improvement in appearance can be expected.

It is sectional drawing of the light source unit of the illumination device which shows one Embodiment. It is a perspective view of the inner cover of a light source unit same as the above. It is an expanded sectional view in the position of the locking part of a light source unit same as the above. FIG. 3 is an enlarged cross-sectional view of the light source unit at a position separated from a locking portion. It is a perspective view which shows the assembly process of a lighting unit same as the above. FIG. 6 is a perspective view showing the assembling process of the lighting unit following FIG. 5; FIG. 7 is a perspective view illustrating the assembling process of the lighting unit following FIG. 6. FIG. 3 is an exploded perspective view of the light source unit. It is a perspective view of a light source unit same as the above. It is a perspective view of a lighting device same as the above.

  Hereinafter, an embodiment will be described with reference to the drawings.

  FIG. 10 shows a perspective view of the lighting device 10. The lighting device 10 is a recessed lighting device embedded and installed in an opening provided in a ceiling. The lighting device 10 includes a main unit 11 installed on a ceiling, and a light source unit 12 detachably attached to the main unit 11.

  The main body unit 11 includes a main body 15 and a reflection plate 16 attached to the main body 15.

  The main body 15 is formed in a quadrangular shape, inserted into the opening in the ceiling, and attached to a suspension bolt installed above the opening in the ceiling. On the lower surface of the main body 15, a pair of metal fittings 17 for mounting the light source unit 12, a power supply unit 18 for supplying lighting power to the light source unit 12, and a power supply line connected to the power supply unit 18 and connected to an external power line And a terminal block 19 for connecting the terminals.

  The reflection plate 16 is formed in a rectangular frame shape, and has a reflection surface formed so as to expand downward in the light irradiation direction. When the lighting device 10 is installed, the peripheral portion of the reflector 16 abuts on the ceiling surface to cover the opening of the ceiling.

  Next, FIGS. 8 and 9 show the entire light source unit 12, and FIGS. 1 to 7 show a partial configuration of the light source unit 12. FIG. The light source unit 12 is formed in a square shape, and is detachably attached to the lower surface of the main body 15 through the inside of the reflector 16.

  The light source unit 12 includes a base plate 21 as an instrument main body, a light emitting unit 22 arranged on a lower surface which is one surface of the base plate 21, an outer cover 23 and an inner cover 24 as a cover arranged on the lower surface side of the base plate 21, and a base plate 21. A packing 25 interposed between the base plate 21 and the outer cover 23 and the inner cover 24;

  The base plate 21 is formed integrally by, for example, pressing a single metal plate. The base plate 21 has a rectangular plate-shaped plate portion 30 and a rectangular frame-shaped fitting frame portion 31 provided around the plate portion 30.

  The light emitting unit 22 is attached to the lower surface, which is one surface of the plate unit 30, and the attachment mechanism 26 is attached to the upper surface, which is the other surface.

  The fitting frame portion 31 includes a rising portion 32 rising upward from a peripheral portion of the plate portion 30, an edge portion 33 protruding outward from an upper end of the rising portion 32, and an edge portion 33. Has a side surface portion 34 bent downward from the outer end of the main body. A fitting groove 35 that opens downward is formed between the rising portion 32, the edge portion 33, and the side surface portion.

  A plurality of insertion holes 36 are provided in the edge 33 of each side of the fitting frame 31. The insertion hole 36 is horizontally long along the side of the edge 33 and is opened from the edge 33 to a part of the side surface 34 except for the inner peripheral side of the edge 33. At an upper edge of the side surface portion 34 facing the insertion hole 36, a pressing portion 38 is integrally provided via a plurality of connecting portions 37. The holding portion 38 is formed in a horizontally long plate shape along the insertion hole 36, and presses the outer peripheral side of the packing 25 in the insertion hole 36. The holding portion 38 is raised along the side surface portion 34 in the initial stage, and when assembling the light source unit 12, the plurality of connecting portions 37 are pressed by using a caulking jig so as to press the outer peripheral side of the packing 25. Is caulked in an inclined shape that has entered the insertion hole 36 through the hole. The number of the insertion holes 36 provided in the edge 33 of each side of the fitting frame 31 may be one.

  The base plate 21 is provided with a plurality of mounting holes for screwing the light emitting unit 22 and the mounting mechanism 26.The mounting holes are closed by screwing the screws, and the insertion holes are formed. Only 36 is open.

  The light emitting unit 22 includes a light emitting module 40 that is a planar light source. The light emitting module 40 includes a rectangular substrate 41 and a plurality of light emitting elements (semiconductor light emitting elements) 42 mounted on one surface of the substrate 41. The light emitting element 42 includes, for example, an LED and an organic EL. Then, the light emitting module 40 is mounted in a state where the other surface of the substrate 41 is thermally connected to the lower surface of the base plate 21. To the light emitting module 40, a cable with a connector (not shown) for power supply is connected. The cable with connector is drawn out to the outside through a wiring hole provided in the base plate 21 and is connected to the cable with connector drawn from the power supply unit 18 by a connector. The wiring holes of the base plate 21 are closed by packing or the like through which the cable with connector is inserted.

  The outer cover 23 is integrally formed of a transparent resin material, for example. The outer cover 23 has a rectangular outer cover front face 50 facing the light emitting section 22, and a rectangular frame-shaped outer cover side face 51 provided around the outer cover front face 50. The cover main body 52 is constituted by the outer cover front face 50 and the outer cover side face 51.

  The outer cover front portion 50 has a flat plate shape, and a plurality of lenses (not shown) are formed on the inner surface or the outer surface. The lens is formed in, for example, a triangular prism shape or a hemispherical shape.

  The outer cover side surface portion 51 is raised upward from a peripheral portion of the outer cover front surface portion 50, and an upper end portion is disposed in the fitting groove 35 of the fitting frame portion 31 of the base plate 21 via the packing 25. In the vicinity of the upper end of the outer surface of the outer cover side portion 51, a flange portion 53 is provided so as to project outward.

  At the upper end of each side of the outer cover side surface portion 51, a locking portion 54 that is inserted into the insertion hole 36 of the base plate 21 is integrally protruded. At the tip of the locking portion 54, a claw portion 55 protrudes toward the inside of the cover main body 52. The claw portion 55 has an inclined surface 55a on the distal end side, and a locking surface 55b on the side opposite to the distal end side that is substantially perpendicular to the inner surface of the locking portion 55. The locking surface 55b is an edge of the base plate 21. The upper surface of the portion 33 is engaged.

  The locking portion 54 is provided on a wall portion 56 protruding toward the outer surface of the outer cover side surface portion 51. At an upper portion of the wall portion 56, a guide portion 57 protruding inward of the cover main body 52 is provided.

  Also, as shown in FIGS. 1 to 4 and 8, the inner cover 24 is integrally formed of, for example, a resin material. The inner cover 24 has a light transmitting property and a light diffusing property than the outer cover 23. For example, the inner cover 24 is formed in milky white, contains a light diffusing agent, or is subjected to a diffusion surface treatment. The inner cover 24 is formed in a similar shape corresponding to the inner surface shape of the outer cover 23 so as to be arranged along the inside of the outer cover 23.

  The inner cover 24 has a rectangular inner cover front portion 60 facing the inner surface of the outer cover front portion 50, and a rectangular frame provided around the inner cover front portion 60 and facing the inner surface of the outer cover side portion 51. It has an inner cover side surface portion 61.

  The central area 60b of the inner cover front part 60 excluding the peripheral part 60a is formed in a flat plate shape. The peripheral portion 60a of the inner cover front surface portion 60 is provided with a protruding portion 62 that protrudes downward from the central region 60b of the inner cover front surface portion 60 and is continuous with the inner cover side surface portion 61. The protrusion 62 has a substantially V-shaped cross section, and is provided in an annular shape over the entire circumference of the inner cover front surface 61. At the tip of the protruding portion 62, a contact portion 63 that comes into contact with the inner surface of the outer cover front surface portion 50 is provided in a protruding manner. A plurality of contact portions 63 are arranged on each side of the protruding portion 62, and are formed, for example, in a hemispherical shape.

  The inner cover side portion 61 is raised from the peripheral portion of the inner cover front portion 60 via the protruding portion 62, and the upper end portion is inserted into the fitting groove 35 of the fitting frame portion 31 of the base plate 21 through the packing 25. Be placed. At the upper end of the inner cover side surface portion 61, a packing fitting portion 64 fitted to the packing 25 is provided. The packing fitting portion 64 has a lower surface side fitting portion 65 that fits on the lower surface side of the packing 25, and an inner peripheral side fitting portion 66 that fits on the inner peripheral side of the packing 25. At the upper end of the inner cover side surface portion 61, a cutout 67 into which each guide portion 57 enters is formed corresponding to the position of each guide portion 57 of the outer cover 23. The notch 67 cuts the packing fitting portion 64.

  The interval L1 between the peripheral portion 60a of the inner cover front portion 60 and the outer cover front portion 50 is between the central region 60b inside the peripheral portion 60a of the inner cover front portion 60 and the outer cover front portion 50. Is smaller than the interval L2. In the present embodiment, the contact portion 63 of the protruding portion 62 contacts the inner surface of the outer cover front surface portion 50, and the interval between them is zero. Further, the distance L3 between the inner cover side surface 61 and the outer cover side surface 51 is smaller than the distance L2 between the central region 60b of the inner cover front surface 60 and the outer cover front surface 50.

  The packing 25 is formed in a rectangular ring shape, for example, using silicone resin or rubber. The packing 25 is formed to have a substantially rectangular cross section whose width in the horizontal direction is larger than the width in the vertical direction. The packing 25 is arranged on the upper end side of the outer cover side surface 51 of the outer cover 23, and the inner peripheral side of the packing 25 is fitted into the packing fitting portion 64 of the inner cover 24.

  The packing 25 is arranged so as to bypass the outer side of each locking portion 54 of the outer cover 23, that is, the outer peripheral side. Corresponding to the position of each locking portion 54 of the outer cover 23, a groove 70 with which each locking portion 54 is engaged is formed on the inner periphery of the packing 25, and a detour portion 71 is formed on the outer periphery of the packing 25. Is protruding.

  As shown in FIGS. 8 and 9, the mounting mechanism 26 includes a mounting spring 80 that can be attached to and detached from the bracket 17 of the main unit 11, a spring support member 81 that rotatably supports the mounting spring 80, and A spring pressing member 82 that applies a biasing force to the mounting spring 80 is provided. Then, the mounting spring 80 is hooked on the bracket 17 of the main body unit 11 and the light source unit 12 is pushed up, so that the mounting spring 80 rotates while being elastically deformed in contact with the spring pressing member 82 and rotating. When 80 exceeds a predetermined neutral point, an urging force acts in a direction in which the light source unit 12 is pulled up to the main unit 11, and the light source unit 12 is attached to the main unit 11.

  When assembling the light source unit 12, the light emitting unit 22 and the mounting mechanism 26 are mounted on the base plate 21, and the inner cover 24 and the packing 25 are mounted on the outer cover 23 in this order.

  By inserting the inner cover 24 inside the outer cover 23, each notch 67 of the inner cover 24 is disposed at a position that passes through the locking portion 54 of the outer cover 23 and faces each guide portion 57. Each contact portion 63 of the outer cover 23 contacts the inner surface of the outer cover front surface 50 of the outer cover 23, and the inner cover 24 is positioned and arranged inside the outer cover 23.

  As shown in FIGS. 5 and 6, the packing 25 is arranged along the upper end side of the outer cover side surface 51 of the outer cover 23 and fitted along the packing fitting portion 64 of the inner cover 24. At this time, each bypass part 71 of the packing 25 is arranged on the outer peripheral side of each locking part 54 protruding from the upper end side of the outer cover side part 51, and each groove part 70 of the packing 25 is fitted to each locking part 54. .

  After that, the base plate 21, the outer cover side surface 51, and the inner cover side surface 61 are combined. That is, the upper end side of the outer cover side surface portion 51 and the upper end side of the inner cover side surface portion 61 are inserted into the fitting groove 35 of the base plate 21 via the packing 25. Thereby, each locking portion 54 projecting from the outer cover side surface portion 51 is inserted into the insertion hole 36 of the edge portion 33 of the base plate 21 while pressing each detour portion 71 of the packing 25 against each pressing portion 38 of the base plate 21. (See FIG. 7). The claws 55 of the locking portions 54 pass through the insertion holes 36 and engage with the edges 33 of the base plate 21, so that the base plate 21 and the outer cover 23 are connected. The holding portion 38 is swaged by a swaging jig so as to be pressed from the outer peripheral side of the packing 25. Thus, the assembly of the light source unit 12 is completed.

  In the assembled state of the light source unit 12, the packing 25 is positioned between the edge 33, the side surface 34, and the pressing portion 38 of the base plate 21, and the outer cover side surface 51, the wall portion 56, and the locking portion 54 of the outer cover 23. The light source unit 12 is in close contact with no intervening gaps, thereby preventing foreign matter such as insects and dust from entering the interior space of the light source unit 12.

  In the inner region of the packing 25, the claw portions 55 of the locking portions 54 and the edge portions 33 of the base plate 21 are in contact with each other, but foreign matters such as insects and dust are present between the contact portions. A small ventilation path of, for example, 0.2 mm or less, through which only gas can pass without entering, is generated, and air permeability inside and outside the light source unit 12 is ensured. That is, through a small ventilation path between the claw portion 55 of each locking portion 54 and the abutting portion of the edge portion 33 of the base plate 21, the space between the base plate 21 and the inner cover 24 and the outer cover 23 and the inner cover 24 Air permeability between the space and the outside of the light source unit 12 is ensured.

  Further, the main body unit 15 of the main unit 11 is inserted into the opening in the ceiling, and is attached to the suspension bolt installed above the opening in the ceiling. The periphery of the reflector 16 is in contact with the ceiling surface, and the opening of the ceiling is concealed.

  The power supply unit 18 of the main unit 11 and the light source unit 12 are connected by wiring, and the light source unit 12 is mounted on the main unit 11 by the mounting mechanism 26 of the light source unit 12 that engages with the metal fitting 17 of the main unit 11.

  When the lighting device 10 is turned on, by supplying lighting power to the light emitting module 40 from the power supply unit 18, the light emitting element 42 of the light emitting module 40 emits light, and the light of the light emitting element 42 diffuses and passes through the inner cover 24. The light passes through the outer cover 23 and is emitted to the illumination space.

  In the lighting device 10 of the present embodiment thus configured, the interval L1 between the peripheral portion 60a of the inner cover front portion 60 and the outer cover front portion 50 is inside the peripheral portion 60a of the inner cover front portion 60. Because the distance L2 between the central region 60b of the inner cover front part 50 and the outer cover front part 50 is smaller than the distance L2 between the central area 60b and the outer cover front part 50, glare is prevented. In addition, the inner cover 24 is hard to be seen from the side surface of the outer cover 23 while maintaining an appropriate interval with good light extraction efficiency, and the appearance can be improved.

  Further, the peripheral portion 60a of the inner cover front portion 60 is provided with a protruding portion 62 that protrudes to the lower surface side from the central region 60b of the inner cover front portion 60 and is continuous with the inner cover side surface portion 61, The inner cover 24 is difficult to see from the side surface of the cover 23, and the side surface of the outer cover 23 can be uniformly illuminated, so that the appearance can be improved.

  Further, since a contact portion 63 that comes into contact with the inner surface of the outer cover front surface portion 50 is protrudingly provided at the tip of the protruding portion 62, the positioning of the outer cover 23 and the inner cover 24 can be easily performed. The distance between the part 62 and the outer cover front part 50 can be kept constant, and the generation of abnormal noise due to the difference in temperature change between the outer cover 23 and the inner cover 24 can be suppressed.

  Further, since the interval L3 between the inner cover side portion 61 and the outer cover side portion 51 has a relationship smaller than the interval L2 between the central region 60b of the inner cover front portion 60 and the outer cover front portion 50, . The inner cover 24 is difficult to see from the side surface of the outer cover 23, and the side surface of the outer cover 23 can be uniformly illuminated, so that the appearance can be improved. The inner cover side portion 61 and the outer cover side portion 51 may be in contact with each other.

  In addition, in the assembled state of the light source unit 12, the packing 25 is interposed between the base plate 21 and the outer cover 23 and closely adhered without any gap, thereby preventing foreign matters such as insects and dust from entering the internal space of the light source unit 12. . Further, in the inner region of the packing 25, the claw portion 55 of the locking portion 54 and the edge portion 33 of the base plate 21 are in contact with each other, but foreign matters such as insects and dust are between the contact portions. A small ventilation path of, for example, 0.2 mm or less, through which only gas can pass without causing intrusion, occurs, and air permeability inside and outside the light source unit 12 can be secured. Accordingly, it is possible to secure the air permeability between the internal space of the light source unit 12 and the outside while preventing foreign objects such as insects and dust from entering the internal space of the light source unit 12, and to deform the outer cover 23 Can be prevented from occurring.

  Further, since the groove 70 provided on the inner periphery of the packing 25 is fitted to and closely attached to the locking portion 54, it is possible to secure the hermeticity while enabling the locking portion 54 to be disengaged from the base plate 21. it can.

  Note that the external appearance of the main unit 11 and the light source unit 12 is not limited to a square shape, but may be a circular shape.

  Further, the lighting device 10 may be constituted only by the light source unit 12.

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

10 Lighting equipment
22 Light emitting section
23 Outer cover
24 Inner cover
50 Front cover
51 Outer cover side
60 Front of inner cover
60a Peripheral part
60b Central area
61 Inner cover side
62 Projection
63 Contact

Claims (4)

A light emitting unit;
A transparent outer cover having an outer cover front portion facing the light emitting portion, and an outer cover side surface portion provided around the outer cover front portion;
An inner cover front portion facing the inner surface of the outer cover front portion, and an inner cover side portion provided around the inner cover front portion and facing the inner surface of the outer cover side portion; The distance between the peripheral portion of the outer cover and the outer cover front portion is smaller than the distance between the central region inside the peripheral portion of the inner cover front portion and the outer cover front portion, and has light diffusion. Inner cover;
A lighting device comprising: The said inner cover is provided with the protrusion part which protrudes from the said center area | region of the said inner cover front part in the said peripheral part of the said inner cover front part, and is continuous with the said inner cover side part. The lighting device according to claim 1. The lighting device according to claim 2, wherein the inner cover includes a contact portion protruding from a tip of the protruding portion and abutting against an inner surface of the front surface of the outer cover. The space between the inner cover side surface and the outer cover side surface is smaller than the space between the central area of the inner cover front surface and the outer cover front surface. 3. The lighting device according to any one of 3.

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