JP6414426B2 - Lighting device - Google Patents

Description

  Embodiments described herein relate generally to a lighting device that can adjust an irradiation direction by rotating a lamp.

  Conventionally, as an illuminating device, a lamp is rotatably supported by a horizontal axis inside a frame body installed on a ceiling, and the light from the lamp body is rotated by rotating the lamp body with respect to the frame body. For example, there is a downlight that can adjust the irradiation direction.

  In such an illuminating device, a gap is provided between the frame body and the lamp body so that the lamp body can rotate, and thus dust may fall from the back of the ceiling through the gap.

JP2013-247086A

  The problem to be solved by the present invention is to provide an illumination device that can prevent the falling of dust.

The illumination device of the embodiment includes a frame body , a lamp body , a light shielding unit, and a cover. The frame has an opening that opens up and down. The lamp body includes a housing that houses the light source and a light emitting portion that is provided on the lower surface of the housing and emits light from the light source. The lamp body is disposed at the opening of the frame body and is supported by the frame body so as to be rotatable about a horizontal axis. The light-shielding portion protrudes in an arc shape so as to cover a part of the opening from one side of the shaft on the frame body. The cover is provided on the lamp body, and includes a first cover portion that protrudes from the lamp body to the light shielding portion side, and a second cover portion that protrudes from the lamp body to the side opposite to the light shielding portion side. The first cover part and the second cover part are different in shape, and the projecting dimension of the second cover part is larger than the projecting dimension of the first cover part . Corresponds to the gap between.

  According to the present invention, it can be expected to prevent the dust from falling.

It is sectional drawing which made the irradiation direction of the illuminating device which shows 1st Embodiment the direct downward direction. It is sectional drawing which inclined the irradiation direction of the illumination device same as the above by 45 degrees. 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 assembly state of an illuminating device same as the above. It is sectional drawing which made the irradiation direction of the illuminating device which shows 2nd Embodiment the direct downward direction. It is sectional drawing which inclined the irradiation direction of the illumination device same as the above by 45 degrees. 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 assembly state of an illuminating device same as the above.

  Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 4.

  As shown in FIGS. 1 to 4, the lighting device 10 is a downlight that is installed in an embedded hole formed in a ceiling member, for example.

  The lighting device 10 includes a frame 11, a lamp 12, a cover 13, and a power supply unit 14.

  The frame 11 is formed in a cylindrical shape that opens up and down, and an opening 20 is formed inside. The inner surface of the frame 11 is configured as a reflecting surface. An edge 21 that is attached to the lower surface of the ceiling member is formed around the lower end of the frame 11 so as to conceal the embedding hole of the ceiling member. Around the frame body 11, a plurality of attachment springs 22 constituted by leaf springs are attached. The mounting spring 22 is inserted into the embedding hole of the ceiling member together with the frame 11 in a state of being elastically deformed along the side surface of the frame 11, and is expanded to the side above the ceiling member to be on the upper surface side of the ceiling member. It abuts and has an action of lifting and holding the lighting device 10 on the ceiling member.

  The frame body 11 includes a light shielding member 24 attached to the upper part of the frame body 11. The light shielding member 24 has a reflecting action. The light shielding member 24 has an annular portion 25 that opens up and down. Bearing portions 27 are formed at two locations symmetrical to the center of the annular portion 25 so as to rotatably support the lamp body 12 by a shaft 26 inserted in the horizontal direction. The bearing portion 27 is formed with a support portion 28 that supports the lamp body 11 and restricts the rotatable range of the lamp body 11 to a predetermined range. On one side of the annular portion 25 with respect to the bearing portion 27, a light shielding portion 29 protrudes upward so as to cover a part of the opening 20. The inner surface of the light shielding portion 29 is formed in an arcuate surface with the bearing portion 27 as the center or the vicinity of the bearing portion 27 as the center. The annular portion 25 of the light shielding member 24 is pressed and fixed to the frame body 11 by a plurality of presser fittings 30 attached to the frame body 11.

  The lamp body 12 includes a light emitting module 40 as a light source and a casing 41 that houses the light emitting module 40.

  The light emitting module 40 includes a substrate 43 and a light emitting unit 44 formed on the surface of the substrate 43. The light emitting unit 44 includes a light emitting element. For example, the light emitting module 40 is configured by a COB module in which a plurality of LEDs as light emitting elements are mounted on a substrate 43 and the plurality of LEDs are sealed with a transparent resin containing a phosphor. The light emitting element is not limited to the LED, and other light emitting elements such as an organic EL may be used.

  The housing 41 is formed in a cylindrical outer shape, and is rotatably disposed in the opening 20 of the frame body 11. The casing 41 includes an upper radiator 46 and a reflector 47, a lens 48, and a lens retainer 49 disposed below the radiator 46.

  On both sides of the lower portion of the heat radiating body 46, shaft portions 51 are formed to project at two locations that are symmetrical with respect to the center of the heat radiating body 46. The shaft portion 51 is rotatably supported on the support portion 28 of the bearing portion 27, and the shaft 26 inserted through the bearing portion 27 is inserted and coupled, and is supported rotatably about the shaft 26. Yes. The shaft portion 51 is formed with a stopper portion 52 that restricts the rotatable range of the lamp body 12 to a predetermined range by contact with the end portion of the support portion 28. A gap for turning the lamp body 12 is formed between the frame body 11 and the lamp body 12.

  A plurality of heat radiating fins 53 are provided upright on the heat radiating body 46. The radiating fins 53 are arranged in parallel from the center of the radiator 46 in three directions. In the radiating fin 53 facing the light shielding portion 29, a blocking portion 54 is formed between the outer portions of the adjacent radiating fins 53. A wiring space 55 is formed between the adjacent radiating fins 53 and the closed portions 54. Further, a flange portion 56 projects from the lower peripheral portion of the heat radiating body 46, and a plurality of screw insertion holes 57 are formed in the flange portion 56.

  The reflector 47 is formed in a cylindrical shape that opens up and down. On the inner peripheral surface of the reflector 47, a reflection surface 59 that is expanded in the irradiation direction is formed. The reflector 47 is attached to the radiator 46 in a state where the substrate 43 of the light emitting module 40 is pressed against the radiator 46.

  The lens 48 is formed in a disk shape with, for example, acrylic resin or glass.

  The lens retainer 49 is formed in a cylindrical shape that opens up and down, and holds the lens 48. The upper side of the lens retainer 49 is arranged around the reflector 47, and the lens 48 is sandwiched between the reflector 47 and attached to the radiator 46 with screws that pass through the screw insertion holes 57 of the radiator 46. Yes.

  The lower portion of the lamp body 12, that is, the vicinity of the lower surface opening of the lens 48 and the lens retainer 49 is configured as a light emitting portion 61 that emits light from the light emitting module 40.

  The cover 13 is a dust-proof cover that is provided on the lamp body 12 and closes the space between the lamp body 12 and the frame body 11. The cover 13 is formed of a material such as silicone resin or rubber, but may be formed of any material as long as it can be elastically deformed.

  The cover 13 includes a cylindrical mounting portion 70 that is mounted around the lamp body 12 and a cover portion 71 that protrudes from the periphery of the mounting portion 70.

  The mounting portion 70 is formed in a cylindrical shape that opens up and down, is mounted around the radiator 46 and the lens holder 49 and is mounted on the upper surface of the flange portion 56 of the radiator 46. Then, it is fastened together with the heat radiating body 46 by a screw that is inserted into the screw insertion hole 57 of the flange portion 56 and screwed into the lens retainer 49.

  The cover portion 71 includes a first cover portion 73 that protrudes from the mounting portion 70 toward the light shielding portion 29 of the light shielding member 24, and a second cover portion 74 that projects away from the light shielding portion 29. The first cover portion 73 and the second cover portion 74 block the gap between the frame body 11 and the lamp body 12 over the entire periphery of the lamp body 12.

  The first cover portion 73 protrudes outward from the lower end of the mounting portion 70, and the front end side of the first cover portion 73 in the protruding direction is opposite to the light emitting portion 61 of the lamp body 12. It protrudes so as to incline toward. That is, the first cover portion 73 protrudes so as to be inclined obliquely upward. The projecting dimension of the first cover portion 73 is such that the first cover 73 contacts the frame body 11 and the frame body 11 and the lamp body 12 regardless of the angle at which the lamp body 12 rotates within the rotatable range. It is a dimension that can close the gap between.

  The second cover portion 74 protrudes outward from the vicinity of the upper end of the mounting portion 70, and the tip end side in the protruding direction of the second cover portion 74 is opposite to the light emitting portion 61 of the lamp body 12. It protrudes so as to incline toward. That is, the second cover portion 74 protrudes so as to be inclined obliquely upward. The projecting dimension of the second cover portion 74 is such that the second cover 74 comes into contact with the frame body 11 and the frame body 11 and the lamp body 12 regardless of the angle at which the lamp body 12 rotates within the rotatable range. It is a dimension that can close the gap between.

  Further, the power supply unit 14 is installed on a ceiling member, for example, separately from the lamp body 12, and is electrically connected to the light emitting module 40 of the lamp body 12 by a power line 80. And a power supply unit converts alternating current power into predetermined direct current power, supplies it to a light emitting module, and makes a light emission part emit light.

  The power line 80 is electrically connected to the light emitting module 40 through the wiring space 55 from above the radiator 46. An intermediate portion of the power supply line 80 passed through the wiring space 55 is held on the upper portion of the radiator 46 by a holder.

  Next, the operation of this embodiment will be described.

  FIG. 1 shows a state in which the irradiation direction of the lamp body 12 is set to the direct downward direction by directing the light emitting portion 61 of the lamp body 12 in the direct downward direction. In this state, the light distribution from the light emitting unit 44 of the light emitting module 40 is applied in the direct downward direction.

  In a state in which the irradiation direction of the lamp body 12 is set to a direct downward direction, the first cover portion 73 of the cover 13 contacts the inner surface of the frame body 11, and the second cover portion 74 is an upper portion of the frame body 11, that is, the light shielding member 24. It contacts the upper part of the annular part 25 and closes the gap between the frame body 11 and the lamp body 12. Therefore, dust can be captured by the cover 13 and can be prevented from falling through the gap between the frame 11 and the lamp body 12.

  2 shows a state in which the irradiation direction of the lamp body 12 is rotated by 45 ° from the state shown in FIG. In this state, the light distribution from the light emitting unit 44 of the light emitting module 40 is applied in an oblique 45 ° direction. Even if the lamp body 12 is rotated by 45 °, the light blocking section 29 of the light blocking member 24 covers the lamp body 12 on the upper side of the light emitting section 61, so that light can be prevented from leaking to the back of the ceiling.

  In a state where the irradiation direction of the lamp body 12 is rotated by 45 °, the first cover portion 73 of the cover 13 contacts the upper portion of the frame body 11, that is, the light shielding portion 29 of the light shielding member 24, and the second cover portion 74 is the frame. It contacts the inner surface of the body 11 and closes the gap between the frame body 11 and the lamp body 12. Therefore, dust can be captured by the cover 13 and can be prevented from falling through the gap between the frame 11 and the lamp body 12.

  Since the cover 13 can be elastically deformed, the lamp body 12 can be rotated to any angle within the rotatable range, and the cover 13 is not limited to the frame body when rotated to any angle. The cover 13 can close the gap between the frame 11 and the lamp body 12.

  According to the lighting device 10 of the present embodiment, the cover 13 closes the gap between the frame body 11 and the lamp body 12, and prevents dust from falling through the gap between the frame body 11 and the lamp body 12. Can be expected.

  Further, since the cover 13 protrudes outward from the lamp body 12, and the front end side of the cover 13 in the protruding direction protrudes obliquely in the opposite direction with respect to the light emitting portion 61 of the lamp body 12, When the lamp body 12 is rotated at any angle within the rotatable range, the cover 13 contacts the frame body 11, and the cover 13 closes the gap between the frame body 11 and the lamp body 12. The state can be maintained.

  Further, in the heat radiating body 46, a wiring space 55 through which the power supply line 80 is passed is formed between the adjacent radiating fins 53 and the closed portions 54. If there is no closed portion 54, the power line 80 may move to the outside of the radiating fin 53 and be sandwiched between the radiating fin 53 and the light shielding member 24. By having the blocking portion 54, it is possible to prevent the power supply line 80 from moving outside the radiating fin 53 and being sandwiched between the radiating fin 53 and the light shielding member 24.

  Next, FIGS. 5 to 8 show a second embodiment. In addition, about the same structure as 1st Embodiment, the same code | symbol is used and the description about the structure and an effect is abbreviate | omitted.

  The second embodiment is a lighting device 10 in which the lamp body 12 of the first embodiment is used in common, but the diameter of the frame body 11 is larger than the diameter of the frame body 11 of the first embodiment.

  The basic structure of the frame 11 is the same as that of the frame 11 of the first embodiment, except that the diameter is larger than that of the frame 11 of the first embodiment and the height of the light shielding portion 29 of the light shielding member 24 is high. It is.

  A mounting base 90 is attached around the lamp body 12. The attachment base 90 is formed in an annular shape and is attached to the lamp body 12 by a plurality of attachment members 91. One end of the mounting member 91 is fixed to the heat radiating body 46 with a screw inserted into the screw insertion hole 57 of the heat radiating body 46, and the other end is fixed to the mounting base 90 together with the cover 13 with a screw.

  On both sides of the mounting base 90, shaft portions 92 similar to the shaft portion 51 of the heat dissipating body 46 are formed to project at two locations that are symmetrical with respect to the center of the mounting base 90. The shaft portion 92 is rotatably supported on the support portion 28 of the bearing portion 27, and the shaft 26 inserted through the bearing portion 27 is inserted and coupled, and is supported rotatably about the shaft 26. Yes. A stopper portion 93 that restricts the rotatable range of the lamp body 12 to a predetermined range by contact with the shaft portion 92 and the end portion of the support portion 28 is formed.

  The mounting portion 70 of the cover 13 is mounted on the mounting base 90 and is fixed to the mounting base 90 with screws.

  FIG. 5 shows a state in which the irradiation direction of the lamp body 12 is set to the downward direction by directing the light emitting portion 61 of the lamp body 12 in the downward direction. In this state, the first cover portion 73 of the cover 13 is in contact with the inner surface of the light shielding portion 29 of the light shielding member 24, and the second cover portion 74 is in contact with the upper portion of the annular portion 25 of the light shielding member 24. And the lamp body 12 are closed. Therefore, dust can be captured by the cover 13 and can be prevented from falling through the gap between the frame 11 and the lamp body 12.

  FIG. 6 shows a state where the irradiation direction of the lamp body 12 is rotated by 45 ° from the state shown in FIG. In this state, the first cover portion 73 of the cover 13 is in contact with the light shielding portion 29 of the light shielding member 24, the second cover portion 74 is in contact with the inner surface of the frame body 11, and the frame body 11 and the lamp body 12 are in contact with each other. The gap between them is blocked. Therefore, dust can be captured by the cover 13 and can be prevented from falling through the gap between the frame 11 and the lamp body 12.

  Since the cover 13 can be elastically deformed, the lamp body 12 can be rotated to any angle within the rotatable range, and the cover 13 is not limited to the frame body when rotated to any angle. 11, the cover 13 can close the gap between the frame 11 and the lamp body 12.

  According to the lighting device 10 of the present embodiment, the cover 13 closes the gap between the frame body 11 and the lamp body 12, and prevents dust from falling through the gap between the frame body 11 and the lamp body 12. Can be expected.

  Further, by using the mounting base 90, even the lighting device 10 using the frame 11 having a large diameter, the lamp body 12 used for the lighting device 10 using the frame 11 having a small diameter can be used in common. The lamp body 12 can be shared.

  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 Frame
12 lamps
13 Cover
14 Power supply unit
20 opening
26 axes
29 Shading part
40 Light emitting module as light source
41 Enclosure
61 Light exit
53 Radiating fin
54 Blocking part
55 Wiring space
73 1st cover part
74 Second cover part
80 Power line

Claims (3)

A frame having an opening that opens up and down;
A housing that houses the light source, and a light emitting portion that is provided on a lower surface of the housing and emits light from the light source, and is disposed in the opening of the frame body, and is horizontally disposed on the frame body A lamp body rotatably supported by a shaft;
A light shielding portion projecting in an arc shape so as to cover a part of the opening from one side of the shaft on the frame;
A first cover portion provided on the lamp body and projecting from the lamp body toward the light shielding portion; and a second cover portion projecting from the lamp body to the side opposite to the light shielding portion side. The first cover part and the second cover part have different shapes, and the projecting dimension of the second cover part is larger than the projecting dimension of the first cover part. A cover corresponding to a gap between the lamp body and the frame ;
An illumination device comprising: The cover protrudes outward from the lamp body, and the front end side of the cover in the protruding direction protrudes obliquely in the opposite direction with respect to the light emitting portion of the lamp body. The lighting device according to claim 1. Comprising a power unit connected to the light source by a power line wired from above the lamp,
The lamp body has a plurality of radiating fins provided at an upper portion of the lamp body, and a closing portion that closes between outer portions of the adjacent radiating fins, and between the adjacent radiating fin and the closing portion. The lighting device according to claim 1, wherein a wiring space for wiring the power supply line is formed in the lighting device.

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