JP6405340B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device that is used by being embedded in a ceiling.

  2. Description of the Related Art Conventionally, an illumination device called a downlight is known that is embedded in a ceiling and radiates light downward. In particular, in recent years, many downlights that can freely change the irradiation direction have been used. A conventional downlight capable of changing the irradiation direction is disclosed in Patent Document 1, for example.

  The downlight generally includes a light source and a reflector that is disposed below the light source and increases in diameter toward the lower side. The downlight described in Patent Literature 1 includes a lamp body including a lamp that is a light source, and an auxiliary reflector that is disposed below the lamp body and increases in diameter as it goes downward (paragraphs 0002 to 0003 and paragraphs 0008 to 003). 0009, FIG. 1, FIG. 5).

Japanese Utility Model Publication No. 6-36124

  In this type of downlight, the lamp body is rotatable in order to change the irradiation direction of the light source. Moreover, in order to avoid a contact with the auxiliary reflecting plate when the lamp body is rotated, the upper opening of the auxiliary reflecting plate is inclined obliquely. For this reason, a gap is generated between the lamp and the auxiliary reflector (see paragraphs 0003 to 0004 of FIG. 5 and FIG. 5). As described above, when a gap is generated between the member including the light source and the member including the reflector, the occupant may visually observe the back of the ceiling through the gap between the members.

  In order to solve such a problem, in another downlight described in Patent Document 1, a hood portion that can enter the inside of the auxiliary reflector is provided on the lamp side (paragraphs 0010 to 0011, FIG. 1). FIG. 3). This prevents a person in the room from viewing the back side of the lighting device. However, in the structure of Patent Document 1, a problem arises in that the design of the lighting device viewed from the occupants is impaired due to the hood projecting into the auxiliary reflector due to the rotation of the lamp. Moreover, when the hood part protrudes into the auxiliary reflector, a part of the reflection surface of the auxiliary reflector is hidden in the hood. Thereby, there also exists a problem that the irradiation range of light becomes narrow.

  This invention is made in view of such a situation, and provides the illuminating device which can suppress that the back of a ceiling is visually recognized from the occupant through the space | gap between members by the method different from patent document 1. FIG. The purpose is to do.

  In order to solve the above-described problem, a first invention of the present application is a lighting device that is embedded in a ceiling and illuminates a lower part, and includes a first main body portion having a cylindrical shape and a cone having an inclined opening on the upper side, and a light source A second main body rotatably supported by the first main body so that the edge on the light emitting side and the inclined opening change between a close state and a separated state And a slide cover that covers at least a part of the outer surface of the second main body, and the slide cover slides according to the amount of rotation to cover the gap between the inclined opening and the edge.

  According to the present invention, the slide cover covers the gap between the end edge of the second main body portion and the inclined opening even when the end edge of the second main body portion is disposed at a position away from the inclined opening. Thereby, it can suppress that the back of a ceiling is visually recognized by the occupant through the gap between the edge of the second main body portion and the inclined opening.

It is a perspective view of the illuminating device which concerns on 1st Embodiment. It is sectional drawing of the illuminating device which concerns on 1st Embodiment. It is a perspective view of the illuminating device which concerns on 1st Embodiment. It is sectional drawing of the illuminating device which concerns on 1st Embodiment. It is a cross-sectional arrow view of the illuminating device which concerns on 1st Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

<1. First Embodiment>
FIG. 1 is a perspective view of the lighting device 1 according to the first embodiment of the present invention in an upright position. FIG. 2 is a cross-sectional view of the lighting device 1 attached to the ceiling 9 in an upright position. FIG. 3 is a perspective view of the lighting device 1 at the maximum tilt position. FIG. 4 is a cross-sectional view of the lighting device 1 attached to the ceiling 9 at the maximum tilt position.

  The lighting device 1 is a so-called downlight that is attached by being embedded in a hole 91 provided in the ceiling 9 and that emits light downward. Moreover, this illuminating device 1 is what is called a universal downlight which can change the irradiation direction of light. As shown in FIGS. 1 to 4, the lighting device 1 includes a stationary part 2 that is fixed to the ceiling 9, a rotating part 3 that is rotatably supported with respect to the stationary part 2, and a slide cover 4. And have. More specifically, in the lighting device 1, the stationary portion 2 that is the first main body portion having the cone 23 and the rotating portion 3 that is the second main body portion having the LED module 32 that is the light source include the fulcrum portion 20. Are connected to each other so as to be rotatable around the center. And the irradiation direction of light is changed by rotating the rotation part 3 with respect to the stationary part 2.

  Here, the vertical axis J1 and the central axis J2 used in the following description shown in FIGS. 2 and 4 will be described. The vertical axis J1 is an axis that represents the rotation center of the cone portion 23. The central axis J <b> 2 is an axis that represents the optical axis of the LED module 32. An angle formed by the vertical axis J1 and the central axis J2 represents a rotating angle (hereinafter referred to as “rotating angle”). Hereinafter, the position of the rotation unit 3 in a state where the rotation angle is 0 ° is referred to as “upright position Pa”, and the position of the rotation unit 3 in the state where the rotation angle θ is maximum (for example, 35 °). This is called “maximum tilt position Pb”. 2 and 4 are cross-sectional views of the illumination device 1 in a plane including the vertical axis J1 and the central axis J2.

  The stationary part 2 includes a frame 21, a mounting spring 22, a cone 23, and a support plate 24.

  The frame 21 is fixed to a hole 91 provided in the ceiling 9. The frame 21 has a through-hole 210 penetrating in the vertical axis direction at the center thereof. The frame 21 has a cylindrical portion 211 and a flange portion 212. The cylindrical part 211 is a cylindrical part centering on a vertical axis J1 perpendicular to the ceiling surface 92. A lower end portion of the cylindrical portion 211 is disposed in the vicinity of the ceiling surface 92. The flange portion 212 extends outward in the radial direction from the lower end portion of the cylindrical portion 211 along the ceiling surface 92. The flange portion 212 has an annular shape when viewed from below. The upper surface of the flange portion 212 is disposed along the ceiling surface 92.

  The attachment spring 22 is a leaf spring member that extends radially outward from the cylindrical portion 211. The lighting device 1 has three attachment springs 22. The tip of each mounting spring 22 contacts the upper surface of the ceiling surface 9. As a result, the ceiling 9 is sandwiched between the flange portion 212 and the attachment spring 22. As a result, the frame 21 is more firmly fixed to the ceiling.

  The cone 23 is a cylindrical member that extends along the vertical axis J1 and increases in diameter as it goes downward. The cone 23 is detachably fixed to the frame 21. The inner peripheral surface of the cone 23 is mirror-coated. For this reason, the inner peripheral surface of the cone 23 serves as a reflector.

  The upper opening 231 of the cone 23 is an inclined opening that opens in a direction inclined with respect to the vertical axis J1. The lower opening 232 of the cone 23 opens in a direction parallel to the vertical axis J1. That is, the lower opening 232 is disposed on a plane parallel to the ceiling surface 92.

  Here, of the edge portion of the cone 23 forming the upper opening 231, the portion arranged most downward in the vertical axis direction is referred to as the upper opening lower end portion 233, and the portion arranged most up in the vertical axis direction is the upper opening upper end. Part 234. The upper opening lower end portion 233 is a portion of the edge portion of the upper opening 231 that has the smallest distance in the vertical axis direction from the lower opening 232. The upper opening upper end portion 234 is a portion of the edge portion of the upper opening 231 that has the longest distance in the vertical axis direction from the lower opening 232.

  The support plate 24 has an annular part 241 and a wall part 242. The annular portion 241 is fixed to the cone 23. The annular portion 241 has an annular shape centered on the vertical axis J1. The wall portion 242 extends from the annular portion 241 upward in the vertical axis direction. The wall part 242 is arrange | positioned only at a part of the circumferential direction. The upper opening lower end portion 233 is not covered with the wall portion 242. The wall portion 242 is provided with a fulcrum portion 20 that rotatably supports the rotating portion 3.

  The rotating part 3 is supported so as to be rotatable around the fulcrum part 20. Thereby, the rotation part 3 is rotatable relative to the stationary part 2 including the cone 23. The rotating unit 3 rotates between the upright position Pa shown in FIGS. 1 and 2 and the maximum tilt position Pb shown in FIGS. 3 and 4. In the upright position Pa, the central axis J2 of the rotation unit 3 is parallel to the vertical axis J1. At the maximum tilt position Pb, the central axis J2 of the rotation unit 3 is tilted with respect to the vertical axis J1. Moreover, the rotation part 3 can be stopped at any position between the upright position Pa and the maximum tilt position Pb.

  The rotating unit 3 includes a housing 31, an LED module 32, an internal reflection plate 33, and a translucent plate 34.

  The housing 31 includes a light source housing part 51, a heat sink 52, a rail part 53, and a skirt part 54. The casing 31 extends along the central axis J2.

  The light source accommodating part 51 is a bottomed cylindrical part. The light source accommodation unit 51 includes a cylindrical part 511 and a light source arrangement part 512. The cylindrical part 511 is a cylindrical part centering on the central axis J2. The light source arrangement part 512 is a bottom part of the light source accommodation part 51. The light source accommodating part 51 is arrange | positioned so that the light source arrangement | positioning part 512 may become an upper side of a central axis direction. On the lower surface of the light source arrangement part 512, the LED module 32 is arranged as a light source. Thus, the LED module 32 is accommodated inside the light source accommodating portion 51.

  The heat sink 52 is arranged above the light source arrangement unit 512. The heat sink 52 is a heat radiating portion having a plurality of heat radiating fins 521. The heat radiating fins 521 are plate-like portions that stand on the upper surface of the light source arrangement portion 512 and are arranged radially with respect to the central axis J2. The heat sink 52 dissipates heat generated in the LED module 32 and transmitted through the light source arrangement unit 512 into the air.

  The rail portion 53 is a rib provided on the outer surface of the housing 31. The rail portion 53 protrudes from the outer peripheral surface of the cylindrical portion 511 of the light source housing portion 51 and extends in parallel with the central axis J2. In the present embodiment, two rail portions 53 are provided on the outer peripheral surface of the cylindrical portion 511. In addition, the rail part 53 may be comprised by the groove | channel extended in parallel with the central axis J2, instead of a rib.

  The skirt portion 54 is a portion that extends downward from the lower end portion of the light source housing portion 51 in the central axis J2 direction. The skirt portion 54 is disposed at a part in the circumferential direction. The upper opening lower end portion 233 is not covered with the skirt portion 54. The vicinity of both end portions in the circumferential direction of the skirt portion 54 is rotatably attached to the fulcrum portion 20 provided on the support plate 24. Thereby, the rotation part 3 is supported so that rotation with respect to the stationary part 2 is possible.

  The LED module 32 is a light source having a plurality of LEDs. The LED module 32 irradiates light downward along the central axis J2.

  The inner reflection plate 33 is disposed inside the light source housing 51. The inner reflection plate 33 is a cylindrical member extending along the central axis J2. The inner reflection plate 33 increases in diameter as it goes downward. The inner peripheral surface of the inner reflection plate 33 is mirror-coated. The LED module 32 is disposed in the opening above the inner reflection plate 33.

  The translucent plate 34 is attached to the opening below the inner reflection plate 33. The translucent plate 34 is formed of a transparent material. By attaching the translucent plate 34 to the opening below the inner reflecting plate 33, the inside of the inner reflecting plate 33 becomes a closed space. Thereby, it is suppressed that dust adheres to the LED module 32. The light transmissive plate 34 diffuses the light emitted from the LED module 32. The translucent plate 34 may be a simple transparent plate having no light diffusion effect or light collecting effect.

  Light emitted from the LED module 32 enters the cone 23 via the translucent plate 34 and the lower edge of the housing 31 and the upper opening 231. That is, the lower edge of the casing 31 is an edge on the light emitting side. As shown in FIG. 2, the lower edge of the casing 31 is separated from the upper opening 231, particularly the upper opening lower end 233, when the rotating part 3 is in the upright state Pa, as shown in FIG. Thus, when the rotation part 3 is the maximum inclination state Pb, it will be in the state which adjoined.

  The slide cover 4 is a curved plate-like member that is disposed along the outer surface of the rotating unit 3. The slide cover 4 covers at least a part of the outer surface of the rotating unit 3. The slide cover 4 includes a covering part 41 and a rail engaging part 42.

  The covering portion 41 extends in an arc shape with the central axis J2 as the center when viewed from the central axis direction. At least a part of the outer peripheral surface of the housing 31 is covered with the covering portion 41. Near the center in the circumferential direction at the lower end of the covering portion 41 is in contact with the stationary portion 2. Specifically, the lower end portion of the covering portion 41 is in contact with the upper surface of the annular portion 241 of the support plate 24. Note that the lower end portion of the covering portion 41 may contact other members of the stationary portion 2 such as the frame 21 and the cone 23.

  The rail engaging portion 42 is a portion that is engaged with the rail portion 53 of the housing 31. Specifically, the rail engaging portion 42 is a protruding portion that is engaged with the rail portion 53. The rail engaging portion 42 projects radially inward from both ends in the circumferential direction in the vicinity of the upper end portion of the covering portion 41. FIG. 5 is a cross-sectional arrow view of the lighting device 1 in the AA cross section shown in FIG. 2. As shown in FIG. 5, each of the pair of rail engaging portions 42 is adjacent to the side surface of the rail portion 53 (the side surface that is far from the other rail portion 53 among both side surfaces in the circumferential direction) 531 in the circumferential direction. To do. Thereby, the positional shift of the slide cover 4 in the circumferential direction with respect to the housing 31 is suppressed. The rail engaging portion 42 is attached to be slidable up and down along the rail portion 53.

  The slide mechanism 6 that slides the slide cover 4 relative to the rotating portion 3 according to the rotation of the rotating portion is configured by the rail portion 53 of the housing 31 and the rail engaging portion 42 of the slide cover 4. Is done. The slide mechanism 6 slides the slide cover 4 in the direction along the central axis J2 with respect to the rotation unit 3.

  As shown in FIGS. 1 and 2, when the rotation unit 3 is disposed at the upright position Pa, the central axis J2 is parallel to the vertical axis J1. The slide cover 4 is disposed at the first position P1 where the lower end of the slide cover 4 comes into contact with the annular portion 241 of the support plate 24 due to its own weight. In the first position P1, the slide cover 4 protrudes downward from the housing 31. Further, at the first position P <b> 1, the rail engaging portion 42 of the slide cover 4 is disposed on the lowermost side of the rail portion 53.

  The slide cover 4 is loosely fitted to the housing 31 so as to be movable. Thus, by providing play between the slide cover 4 and the housing 31, the slide cover 4 can be smoothly slid relative to the housing 31. In the illumination device 1, the plurality of heat radiation fins 521 are positioned above the upper end of the slide cover 4. Thereby, since the slide cover 4 does not contact the radiation fin 521, the friction between the housing 31 and the slide cover 4 can be further reduced. Therefore, the slide cover 4 can be slid and moved more smoothly with respect to the housing 31.

  When the rotating part 3 is disposed at the upright position Pa, a gap is generated between the upper opening lower end part 233 of the cone 23 and the housing 31. Then, as indicated by an arrow A1 in FIG. 2, the occupant can visually observe the gap. For this reason, if it is assumed that the lighting device 1 does not have the slide cover 4, the occupant can visually recognize the back of the ceiling through the gap. If it does so, the design of the illuminating device 1 seen from the occupant will be spoiled. However, in this illuminating device 1, by covering the said gap | interval with the slide cover 4, it can suppress that a ceiling occupant is visually observed from the occupant through the gap | interval between members.

  As shown in FIG. 3 and FIG. 4, when the rotating part 3 is arranged at the maximum inclination position Pb, the central axis J <b> 2 is inclined together with the rotating part 3. For example, at the maximum tilt position Pb, the central axis J2 is tilted by 35 ° with respect to the vertical axis J1. The slide cover 4 is disposed at the second position P2 where the lower end of the slide cover 4 comes into contact with the annular portion 241 of the support plate 24 due to its own weight. The overlap in the central axis direction between the slide cover 4 and the housing 31 at the second position P2 is larger than the overlap in the central axis direction between the slide cover and the housing 31 at the first position P1.

  When the rotating unit 3 is disposed at the maximum tilt position Pb, a part of the housing 31 is disposed below the upper opening lower end 233 of the cone 23. For this reason, the room occupant cannot visually observe the gap between the upper opening lower end 233 and the housing 31.

  On the other hand, the upper opening upper end portion 234 of the cone 23 and the lower end portion of the light source housing portion 51 of the housing 31 are arranged with a gap therebetween. Then, as indicated by an arrow A2 in FIG. 4, the occupant can visually observe the gap. For this reason, if it assumes that the housing | casing 31 does not have the skirt part 54, the occupant can visually recognize the back of the ceiling through the said gap. If it does so, the design of the illuminating device 1 seen from the occupant will be spoiled. However, in this illuminating device 1, since the said gap | interval is covered with the skirt part 54, it can suppress that a occupant sees a ceiling back through the gap | interval between members.

  As described above, the lower end portion of the slide cover 4 is in contact with the upper surface of the annular portion 241 of the support plate 24 regardless of whether the rotating portion 3 is disposed at the upright position Pa or the maximum inclined position Pb. ing. That is, the height in the vertical axis direction of the lower end portion of the slide cover 4 at the first position P1 and the height in the vertical axis direction of the lower end portion of the slide cover 4 at the second position P2 are substantially the same. Thereby, the slide cover 4 can reliably cover the gap between the cone 23 and the housing 31. This effect is the same even when the rotating unit 3 is located between the upright position P1 and the maximum tilt position P2.

  Further, the lower end portion of the slide cover 4 is located outside the cone 23 in both the upright position P1 and the maximum inclined position P2. For this reason, the lower end portion of the slide cover 4 does not protrude inside the cone 23. Therefore, the design inside the cone 23 is not damaged by the slide cover 4. Further, the light irradiation range is not narrowed by the slide cover 4.

  Moreover, this illuminating device 1 is perpendicular | vertical when the rotation angle of the rotation part 3 is in a predetermined range (for example, 0 degree-45 degrees etc.), such as when the rotation part 3 is arrange | positioned in the upright position Pa. When viewed in the direction, the main body portion of the lighting device 1 (a portion excluding members constituting the frame such as the frame 21, the mounting spring 22, and the cylindrical portion 221) can pass through the through hole 210 of the frame 21. For this reason, when fixing the illuminating device 1 to the ceiling 9, the frame 21 is fixed in advance in the hole 91 of the ceiling 9, and then the main body portion of the illuminating device 1 is inserted from the lower side of the ceiling 9 and installed. Can do.

  The cone 23, the support plate 24, the rotating unit 3, and the slide cover 4 are fixed to the frame 21 so as to be detachable. When the rotating unit 3 is arranged at the upright position Pa, the cone 23, the support plate 24, the rotating unit 3, and the slide cover 4 are arranged in the through hole 210 of the frame 21 when viewed in the vertical direction. . For this reason, when performing maintenance of the lighting device 1, the cone 23, the support plate 24, the rotating unit 3, and the slide cover 4 are pulled out downward through the through hole 210 of the frame 21, or inside the hole 91. It can be inserted into Therefore, it is not necessary for the operator to enter the back of the ceiling and attach or remove the slide cover 4.

<2. Modification>
As mentioned above, although main embodiment of this invention was described, this invention is not limited to said embodiment.

  In the above embodiment, the concept of the vertical axis J1 and the central axis J2 is used for convenience of description in order to define the rotation angle of the lighting device 1, but this is not restrictive, and it is sufficient if the angle of rotation can be specified. The axes, rules, standards, etc. may be used.

  In the above embodiment, the range of the rotation angle is 0 ° to 35 °. However, the present invention is not limited to this, and any angle that can function as a universal downlight is sufficient. For example, the lighting device 1 may be configured so as not to be in the upright position Pa (rotation angle is 0 °), and the smallest angle among the rotation angles may be an angle other than 0 ° such as 5 ° or 10 °. Similarly, the maximum inclination position Pb is not limited to the position where the rotation angle is 35 °, and may be another angle.

  In the above embodiment, the position in the vertical axis direction is determined by the lower end of the slide cover coming into contact with the frame. However, the present invention is not limited to this, and any configuration that determines the position in the vertical axis direction is sufficient. For example, the position of the vertical axis direction of the lower end portion of the slide cover may be determined by contacting a member of a stationary portion other than the frame.

  Moreover, in said embodiment, the slide mechanism was comprised by the rail part provided in the rotation part side, and the rail engaging part provided in the slide cover. However, the present invention is not limited to this, and the slide cover may cover the gap between the lower edge of the rotating unit and the upper opening of the cone according to the rotation of the rotating unit. It's enough. For example, the slide mechanism includes a rotation fulcrum portion that rotatably holds a slide cover provided on the stationary portion side, and an urging member that urges the slide cover toward the outer surface of the housing. Also good. Even in such a case, the slide mechanism can slide the housing and the slide cover relative to each other in the direction of the central axis in accordance with the rotation of the rotation unit.

  Moreover, in said embodiment, although the LED light source is used as a light source, this invention is not limited to this. Other light sources such as an incandescent bulb and a fluorescent lamp may be used as the light source.

  Moreover, you may combine arbitrarily each element which appeared in said each embodiment and modification in the range which does not produce inconsistency.

<3. Extraction of Invention>
As invention extracted from said embodiment and modification, the following invention can be mentioned, for example.

  A first aspect of the present invention is a lighting device that is embedded in a ceiling and illuminates the lower side, and includes a first main body portion having a cylindrical shape and a cone having an inclined opening on the upper side, a light source, and a light emitting side. A second main body part rotatably supported by the first main body part so that an end edge and the inclined opening change between a close state and a separated state; and A slide cover that covers at least a part of the outer surface, and the slide cover slides according to a rotation amount to cover a gap between the inclined opening and the edge.

  A second invention is a lighting device according to the first invention, wherein a rail portion is provided on an outer surface of the second main body portion in parallel with a direction in which the slide cover slides, and the slide cover is provided with the rail portion. The slide cover is slidable by its own weight according to the rotation when the second main body portion rotates with respect to the first main body portion, and the lower end of the slide cover. The part is supported by the first body part.

  3rd invention is an illuminating device of 2nd invention, Comprising: The said rail part is comprised by the rib or the groove | channel, and the said rail engaging part is a protruding member hooked by the said rib or groove | channel.

  A fourth invention is the lighting device according to any one of the first invention to the third invention, wherein the first body portion includes a frame provided with a through hole and directly fixed to a ceiling surface, and the second body portion. Is within a predetermined rotation range, the cone, the second main body, and the slide cover are arranged to pass through the through hole.

  5th invention is the illuminating device in any one of 1st invention thru | or 4th invention, Comprising: The said 2nd main-body part further has several heat radiation fin, These heat radiation fins are upper ends of the said slide cover. It is located above.

  A sixth aspect of the invention is the lighting device according to any one of the first to fifth aspects of the invention, wherein a lower end portion of the slide cover is located outside the cone.

  A seventh invention is the illumination device according to any one of the first to sixth inventions, wherein the slide cover is loosely fitted to the second main body portion so as to be movable minutely.

  According to the first to seventh aspects of the invention, even when the end edge of the second main body portion is disposed at a position separated from the inclined opening, the slide cover is formed between the end edge of the second main body portion and the inclined opening. Cover the gap. Thereby, it can suppress that the wiring etc. of a ceiling back etc. are visually recognized from the occupant through the clearance gap between the edge of a 2nd main-body part, and inclination opening.

  In particular, according to the fourth invention, when the maintenance of the lighting device is performed, the cone, the second main body portion, and the slide cover are pulled down through the through-hole of the frame or fitted into the ceiling. Can do.

  In particular, according to the fifth and seventh inventions, the slide cover can be slid smoothly with respect to the second main body.

  In particular, according to the sixth aspect of the invention, the lower end portion of the slide cover does not protrude inside the cone. For this reason, the design inside a cone is not spoiled with a slide cover. Further, the light irradiation range is not narrowed by the slide cover.

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Static part 3 Rotating part 4 Slide cover 6 Slide mechanism 9 Ceiling 21 Frame 23 Cone 31 Case 32 LED module 42 Rail engaging part 51 Light source accommodating part 52 Heat sink 53 Rail part 91 Hole part 92 Ceiling surface 210 Through Hole 231 Upper opening 232 Lower opening 521 Radiation fin J1 Vertical axis J2 Central axis

Claims (7)

A lighting device that is embedded in the ceiling and illuminates the lower part,
A first main body having a cone and a cone having an inclined opening on the upper side;
A second light source is provided and is rotatably supported by the first main body so that the edge on the light emitting side and the inclined opening change between a close state and a separated state. The main body,
A slide cover covering at least a part of the outer surface of the second main body,
The slide cover slides according to a rotation amount and covers a gap between the inclined opening and the end edge. The lighting device according to claim 1,
A rail portion is provided on the outer surface of the second main body portion in parallel with the sliding direction of the slide cover,
The slide cover includes a rail engaging portion that is movable along the rail portion,
The slide cover slides by its own weight according to the rotation when the second main body portion rotates with respect to the first main body portion, and the lower end portion of the slide cover is supported by the first main body portion. maintain,
Lighting device. The lighting device according to claim 2,
The rail part is composed of a rib or a groove,
The rail engaging portion is a protruding member that is engaged with the rib or groove.
Lighting device. A lighting device according to any one of claims 1 to 3,
The first main body includes a frame provided with a through hole and directly fixed to the ceiling surface,
The lighting device, wherein the cone, the second main body, and the slide cover are arranged to pass through the through hole when the second main body is within a predetermined rotation range. A lighting device according to any one of claims 1 to 4,
The second body part is
A plurality of heat dissipating fins;
The radiating device, wherein the plurality of heat dissipating fins are positioned above an upper end of the slide cover. A lighting device according to any one of claims 1 to 5,
The lower end part of the said slide cover is an illuminating device located in the outer side of the said cone. The illumination device according to any one of claims 1 to 6,
The said slide cover is an illuminating device loosely fitted with respect to the said 2nd main-body part so that micro movement is possible.

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