JP2020047567A - Luminaire - Google Patents

Abstract

To provide a luminaire capable of adjusting an inclination angle of a lamp body easily at low cost, and capable of surely holding the lamp body at a predetermined angle.SOLUTION: A luminaire 100 includes: a frame body 20 to be fixed to a ceiling of a building; a lamp body 40 including a light emitting part 32; and two pieces of support plates 60, 60 in which the lamp body 40 is mounted so as to rotate with respect to the frame body 20 via a rotary shaft Q. The support plate 60 includes a first contact surface 61 and a second contact surface 62 provided on the other end on the opposite side by sandwiching the rotary shaft Q with respect to one end which is fixed to the lamp body 40, at a predetermined angle. The frame body 20 includes: a first rotation restriction surface 11 coming into contact with the first contact surface 61 of the support plate 60 in a state where the lamp body 40 is arranged at the first rotation position and for restricting the rotation of the lamp body 40; and a second rotation restriction surface 12 coming into contact with the second contact surface 62 of the support plate 60 in a state where the lamp body 40 is arranged at the second rotation position and for restricting the rotation of the lamp body 40.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a lighting device such as a downlight mounted on a ceiling of a building, for example.

  2. Description of the Related Art Conventionally, as a lighting device mounted on a ceiling of a building, a downlight of a type buried in a mounting hole provided in the ceiling is known. The downlight has, for example, a frame fixed to a mounting hole in the ceiling, and a lamp with a light source, and emits illumination light from the ceiling toward the floor directly below.

  In addition, universal downlights in which a lamp is rotatably attached to a frame (ceiling) have been widely used. Since the universal downlight can tilt the optical axis of the lamp body, the emission direction of the illumination light can be tilted in a desired direction.

JP-A-7-85718

  In the universal downlight, generally, the angle at which the lamp is inclined is limited, for example, by bringing a part of the lamp into contact with the frame when the lamp is inclined. For this reason, in order to hold the lamp body at a desired angle, it is necessary to form the shape of the contact portion between the lamp body and / or the frame body at a predetermined angle, and the degree of freedom in design is low. Further, for example, when it is desired to change the angle at which the lamp body is inclined, it is necessary to change the shape of the abutting portion of the lamp body and / or the frame body, which increases the manufacturing cost.

  Therefore, there is a demand for the development of an illuminating device that can adjust the tilt angle of the lamp at low cost and easily, and can reliably hold the lamp at a predetermined angle.

  The lighting device according to the embodiment has a fixing member to be fixed to the mounted portion, a lamp body having a light source, and is fixed to one of the fixing member and the lamp body, and the other of the fixing member and the lamp body is provided with a rotating shaft. A first rotation position where the light emitted from the light source is directed to a first direction and a second rotation position where the light emitted from the light source is directed to a second direction different from the first direction. And a rotation support member that supports the lamp body so as to be rotatable about a rotation axis with respect to the fixed member. The rotation support member has one end fixed to one of the fixing member and the lamp body, a first contact surface provided at a predetermined angle on the other end opposite to the one end with respect to the rotation shaft, and a second contact surface. Having a contact surface. The other of the fixing member and the lamp body is a first rotation that regulates the rotation of the lamp body by contacting the first contact surface of the rotation support member with the lamp body disposed at the first rotation position. A movement restricting surface, and a second rotation restricting surface that restricts the rotation of the lamp body by contacting the second contact surface of the rotation support member with the lamp body disposed at the second rotation position. Have.

  According to the embodiment, it is possible to provide an illuminating device that can easily and inexpensively adjust the tilt angle of the lamp body and can surely hold the lamp body at a predetermined angle.

FIG. 1 is a perspective view illustrating a lighting device according to the embodiment. FIG. 2 is an exploded perspective view showing a frame of the lighting device of FIG. FIG. 3 is an exploded perspective view showing a lamp body of the lighting device of FIG. FIG. 4 is a schematic view of a main part showing a state where the lamp body of the lighting device of FIG. 1 is inclined with respect to the frame. FIG. 5 is a schematic view of a main part showing a state where the lamp body of the lighting device of FIG. 1 is arranged coaxially with the frame body.

  The lighting device 100 includes a frame 20 fixed to a ceiling of a building, a lamp 40 having a light emitting section 32, one end fixed to the lamp 40, and the other end fixed to the frame 20 via a rotation axis Q. And two support plates 60, 60 rotatably mounted. The two support plates 60, 60 are arranged in a first rotation position where light emitted from the light emitting unit 32 is directed in the first direction and in a second direction in which light emitted from the light emitting unit 32 is different from the first direction. The lamp body 40 is supported so as to be rotatable with respect to the frame body 20 between the facing second rotation position. Each support plate 60 has a first abutment surface 61 and a second abutment provided at a predetermined angle on the other end opposite to the one end fixed to the lamp body 40 with the rotation axis Q interposed therebetween. It has a surface 62. The frame body 20 contacts the first contact surface 61 of the support plate 60 in a state where the lamp body 40 is located at the first rotation position, and regulates the rotation of the lamp body 40. The second rotation restricting surface that restricts the rotation of the lamp body 40 by contacting the surface 11 and the second contact surface 62 of the support plate 60 with the lamp body 40 arranged at the second rotation position. It has 12.

Hereinafter, embodiments will be described in detail with reference to the drawings.
As illustrated in FIG. 1, the lighting device 100 according to the embodiment includes a frame 20 (fixing member), a lamp 40, and two support plates 60, 60 (rotation support members). In addition, the lighting device 100 includes a power supply device (not shown) connected to a light source module 30 (FIG. 3) of the lamp body 40 described below. The lighting device 100 of the present embodiment is, for example, a universal downlight that can be attached to a mounting hole (not shown) provided in a ceiling (attached portion) of a building.

  In the following description, a central axis perpendicular to the light emitting surface 31 of light emitted from the light emitting unit 32 (light source) of the light source module 30 is referred to as an optical axis O, and extends in a vertical direction passing through the center of the frame 20 attached to the ceiling. The extended axis is called a central axis P. In the lighting device 100 of the present embodiment, the frame body 20 is fixed to the ceiling, and the lamp body 40 is rotatably supported with respect to the frame body 20 via the support plates 60, 60. Therefore, the center axis P of the frame body 20 is fixedly arranged with respect to the ceiling, and the optical axis O of the lamp body 40 can be inclined with respect to the center axis P. FIG. 1 shows a state in which the lamp body 40 is arranged at a second rotation position where the lamp body 40 is tilted with respect to the frame body 20.

  As shown in FIG. 2, the frame body 20 includes a substantially cylindrical decorative frame 22 fixed to a mounting hole in a ceiling, and a substantially cylindrical decorative frame 22 rotatably attached to the decorative frame 22 about a central axis P. It has a rotating frame 24. The rotating frame 24 is disposed so as to overlap the upper end of the decorative frame 22 in the figure (FIG. 1). The decorative frame 22 and the rotating frame 24 are mounted coaxially along the central axis P. The decorative frame 22 and the rotating frame 24 have outer diameters slightly smaller than the ceiling mounting holes.

  The decorative frame 22 has an annular flange portion 22a at one end in the axial direction that engages with a ceiling surface (floor side surface). The diameter of the flange portion 22a is larger than the diameter of the mounting hole in the ceiling. Further, the decorative frame 22 includes three fixing springs 21 for fixing the decorative frame 22 to the ceiling. The decorative frame 22 is fixed to the ceiling by sandwiching the ceiling wall between the three fixed springs 21 and the flange portion 22a. Therefore, the rotating frame 24 and the three fixed springs 21 are arranged behind the ceiling.

  The three fixed springs 21 are fastened and fixed to the outer peripheral surface of the decorative frame 22 by screws 23 (only one is shown in FIG. 2). The decorative frame 22 has three screw holes into which the screws 23 are screwed. Each screw hole is provided through the wall of the cylindrical portion of the decorative frame 22. Each of the fixed springs 21 includes a fixed portion 21 a extending tangentially to the outer peripheral surface of the decorative frame 22, and a spring integrally and radially extended radially of the decorative frame 22 from the distal end of the fixed portion 21 a. And a portion 21b. The three fixing springs 21 are attached at equal intervals in the circumferential direction of the decorative frame 22 with the fixing portions 21a facing in the same direction.

  The fixed spring 21 can be deformed in a direction in which the fixed portion 21a approaches the outer peripheral surface of the decorative frame 22, and can be deformed in a direction in which the spring portion 21b approaches a lamp 40 to be described later. Therefore, the three fixed springs 21 can be inserted into the mounting holes slightly larger in diameter than the decorative frame 22. The method of attaching the decorative frame 22 using the three fixed springs 21 is a well-known technique, and thus the description thereof is omitted.

  The three fixing springs 21 are fastened and fixed to the decorative frame 22 using the screws 23 as described above. On the other hand, the rotating frame 24 has a cylindrical portion 25 inserted and arranged inside the upper end of the decorative frame 22. The outer diameter of the cylindrical portion 25 is smaller than the inner diameter of the decorative frame 22. On the outer periphery of the cylindrical portion 25, an annular groove 25a facing the inner surface of the decorative frame 22 is provided. The annular groove 25a has a width and a depth capable of slidably receiving the tips of screws 23 for fastening and fixing the three fixing springs 21 to the decorative frame 22. The screw 23 has a length that exceeds at least the wall thickness of the decorative frame 22.

  That is, when the cylindrical portion 25 of the rotating frame 24 is inserted from the upper end of the decorative frame 22 and the three fixing springs 21 are fastened and fixed to the outer peripheral surface of the decorative frame 22, the tips of the screws 23 It protrudes from the inner surface and is arranged in a groove 25 a provided in the cylindrical portion 25 of the rotating frame 24. The positions of the screw holes of the decorative frame 22 through which the screws 23 are inserted and the grooves 25a provided in the cylindrical portion 25 of the rotating frame 24 are designed so that the tips of the screws 23 enter the grooves 25a.

  For this reason, when the cylindrical portion 25 is inserted into the upper end of the decorative frame 22 and the three fixed springs 21 are attached to the decorative frame 22, the tips of the three screws 23 are inserted into the grooves 25a of the cylindrical portion 25. . In this state, the tips of the three screws 23 can move along the groove 25a, and the rotating frame 24 can rotate about the center axis P with respect to the decorative frame 22. As described above, since the decorative frame 22 is fixed to the ceiling, the rotating frame 24 can rotate around the central axis P with respect to the decorative frame 22 fixed to the ceiling.

  In addition, a plate 80 (rotation control member) that prevents the rotation frame 24 from coming off and controls the rotation of the rotation frame 24 is attached to the decorative frame 22. The plate piece 80 has a shape obtained by bending a rectangular metal plate into a substantially L-shape. The plate piece 80 is engaged with an outer peripheral surface of the decorative frame 22 by a screw 82 while one of the engagement pieces 81 bent in an L-shape is engaged with the upper end of the rotating frame 24 shown in FIG. Fastened and fixed. In this manner, by fixing the plate piece 80 to the decorative frame 22, the rotation of the rotating frame 24 with respect to the decorative frame 22 is allowed, and the problem that the rotating frame 24 is separated from the decorative frame 22 is prevented. be able to.

  As shown in FIG. 2, a substantially frustoconical cylindrical reflector 26 converging at one end in the axial direction is disposed between the decorative frame 22 and the rotating frame 24. The decorative frame 22 has an annular step portion 22b on its inner surface on which a flange portion 26a provided on the expanded opening edge of the reflection plate 26 is placed. That is, by mounting the rotating frame 24 with the flange portion 26a of the reflecting plate 26 mounted on the step portion 22b of the decorative frame 22, the reflecting plate 26 is mounted sandwiched between the decorative frame 22 and the rotating frame 24. .

  In addition, the rotating frame 24 has two plate-shaped projecting portions 28 on the upper end side separated from the decorative frame 22 for rotatably attaching the two support plates 60 respectively. The two protruding portions 28 are provided integrally with the rotating frame 24 at positions spaced apart in the radial direction of the rotating frame 24. The two protruding portions 28 are provided so as to protrude upward from the upper end in the drawing of the rotating frame 24 in parallel with the central axis P.

  Each protruding portion 28 has a recess 28a on the inside facing each other near its upper end. A spring washer (not shown) and a lock nut 29b (FIG. 1) are accommodated in the recess 28a. The recess 28a has an inner surface shape that matches the outer shape of the lock nut 29b so that the lock nut 29b does not rotate. Further, the protruding portion 28 has an insertion hole 28b through which a rotation screw 29a (FIG. 1) for attaching the support plate 60 is inserted. The insertion holes 28b provided in the two projecting portions 28 are coaxially arranged. The insertion hole 28b is provided through the protruding portion 28 so as to communicate with the recess 28a.

  Further, the protruding portion 28 has a recess 10 on the outer surface side of the upper end thereof for accommodating and disposing the illustrated lower end portion of the support plate 60. The above-described insertion hole 28b through which the rotation screw 29a is inserted is provided in the recess 10. The recess 10 is provided with a first rotation restricting surface 11 and a second rotation restricting surface 12, which will be described later.

  When two support plates 60 are attached to the rotating frame 24, the lower end portions of the support plates 60 are superposed and arranged in the recesses 10 on the outer surface side of the respective projecting portions 28, and the insertion holes 65 of the support plate 60 (FIG. 3) and the insertion hole 28b of the protruding portion 28 is coaxially arranged. Then, the rotation screw 29a is inserted into the insertion hole 65 and the insertion hole 28b, and the lock nut 29b is screwed into the spring washer (not shown) arranged in the recess 28a of the protruding portion 28 through the rotation screw 29a. The lock nut 29b is fixed in the middle of the rotation screw 20a, and the support plate 60 is rotatably attached to the protruding portion 28.

  The first rotation restricting surface 11 and the second rotation restricting surface 12 in the recess 10 of the protruding portion 28 of the rotation frame 24, and the first contact surface 61 and the second contact of the support plate 60. The surface 62 regulates the rotation position of the support plate 60 with respect to the rotation frame 24 about the rotation screw 29a. The first rotation restricting surface 11 and the second rotation restricting surface 12 of the protruding portion 28 and the first contact surface 61 and the second contact surface 62 of the support plate 60 will be described later in detail.

  As shown in FIG. 3, the lamp 40 has a lens frame 42, a lens 44, a pressing spring 45, a radiator 46, and the light source module 30. The illustrated upper end of the support plate 60 described above is fixed to the lens frame 42 using screws 66. Two recesses 43 into which the support plate 60 is fitted are provided on the outer peripheral surface of the lens frame 42. The two recesses 43 are provided apart from each other in the radial direction of the lens frame 42. The recess 43 is formed in the same shape as the outer shape of the support plate 60 to prevent a problem that the support plate 60 is attached to the front and back by mistake. The bottom surfaces of the two recesses 43 are planes parallel to each other.

  When the support plate 60 is attached to the concave portion 43 of the lens frame 42, the support plate 60 is fitted into the concave portion 43 by matching the front and back of the support plate 60 to the shape of the concave portion 43, and the screw 66 is inserted into the insertion hole 67 of the support plate 60. It is inserted and screwed into the screw hole 51 of the concave portion 43 of the lens frame 42. Thus, the support plate 60 is fastened and fixed to the lens frame 42 in a correct direction. As described above, when the lens frame 42 and the rotating frame 24 are connected via the two support plates 60, the lens frame 42 (that is, the lamp 40) is moved relative to the frame 20 fixed to the ceiling by the center axis P , And can be tilted about a rotation axis Q.

  The lens frame 42 includes a substantially cylindrical tubular portion 42a, two curved light shielding walls 42b projecting downward from the lower end in the drawing of the cylindrical portion 42a, and two curved light shielding walls 42b projecting upward from the upper end in the drawing of the cylindrical portion 42a. It has two protruding plate portions 42c integrally. The two protruding plate portions 42c are arranged at the same position as the above-described recess 43 along the circumferential direction of the lens frame 42. The two light shielding walls 42b are arranged at positions different from the above-described recess 43 by 90 ° along the circumferential direction of the lens frame 42. The light shielding wall 42b functions to reduce stray light leaking from a gap between the lamp body 40 and the frame body 20 when, for example, the lamp body 40 is tilted with respect to the frame body 20 in the state shown in FIG.

  The cylindrical portion 42a holds the lens 44 inside. The lens 44 integrally has an annular flange portion 44a on the outer periphery thereof. When attaching the lens 44 to the cylindrical portion 42a, the lens 44 is inserted from the upper end side of the cylindrical portion 42a in the drawing. Then, the flange portion 44a is placed on an annular step (not shown) provided on the inner surface of the cylindrical portion 42a. Furthermore, a substantially annular pressing spring 45 is inserted into the cylindrical portion 42a from above the illustrated flange portion 44a (opposite to the step portion), and the pressing spring 45 is inserted into a predetermined groove (not shown) of the cylindrical portion 42a. Fix it. Thus, the lens 44 is fixed in the lens frame 42 by sandwiching the flange portion 44a of the lens 44 between the stepped portion provided on the inner surface of the cylindrical portion 42a and the pressing spring 45.

  In this state, the optical axis of the lens 44 overlaps the optical axis O of the lamp 40. The lens 44 has a thickness in the optical axis direction slightly larger than the axial length of the cylindrical portion 42a. The lens 44 has a concave lens surface on the light incident side (upper side in the figure). The lens 44 has a convex lens surface on the light emission side (the lower end side in the figure).

  The above-described protruding plate portion 42c of the lens frame 42 has an insertion hole 53 for inserting a fixing screw 52 for connecting and fixing the radiator 46 to one axial end (upper end in the figure) of the cylindrical portion 42a. The radiator 46 has a substantially disk-shaped base plate 46 a that closes one end of the lens frame 42. On the outer peripheral edge of the base plate 46a, two notches 46b for fitting the two projecting portions 28 of the lens frame 42 described above are provided. The two notches 46b are provided at positions radially separated from the base plate 46a so as to face the two projecting portions 28 of the lens frame 42.

  A plurality (five in this embodiment) of radiation fins 46c are integrally provided on the upper surface of the base plate 46a opposite to the lens frame 42 in the drawing. The radiation fins 46c extend substantially parallel to each other along the optical axis O. The radiation fins 46c extend vertically upward from the upper surface of the base plate 46a.

  The outer two radiating fins 46c of the five radiating fins 46c are provided with boss portions 46d facing the notches 46b and overlapping the two protruding plate portions 42c of the lens frame 42. Each boss portion 46d is provided integrally with the outer two heat radiation fins 46c so as to be continuous with the notch 46b. Each boss portion 46d is provided with a screw hole 46e for screwing a fixing screw 52 inserted into the insertion hole 53 of the protruding plate portion 42c.

  When the radiator 46 is fixed to the upper end of the lens frame 42 in the drawing, the two protruding plate portions 42c of the lens frame 42 are fitted into the notches 46b of the base plate 46a of the radiator 46, respectively. The boss part 46d is overlapped. At this time, the lower surface of the base plate 46a of the radiator 46 contacts the upper end of the cylindrical portion 42a of the lens frame 42. Then, the fixing screws 52 are inserted into the insertion holes 53 from outside the two protruding plate portions 42c, respectively, and screwed and fastened to the screw holes 46e of the boss portion 46d. Thereby, the radiator 46 is fixed to one end of the lens frame 42.

  The light source module 30 is attached to the illustrated lower surface of the base plate 46a of the radiator 46. The light source module 30 includes a light emitting unit 32 (light source) including a plurality of semiconductor light emitting elements (not shown) such as LEDs (light emitting diodes), and has a structure in which the light emitting unit 32 is provided on a surface of a substrate 33. The light emitting section 32 has a light emitting surface 31 parallel to the ceiling surface, and an axis perpendicular to the light emitting surface 31 passing through the center of the light emitting surface 31 is the optical axis O. The optical axis O of the light emitting section 32 coincides with the optical axis O of the lens 44. The light emitting section 32 emits light around the optical axis O.

  The radiator 46 has a housing (not shown) in which a connector (not shown) for connecting a power supply cable (not shown) drawn from a power supply device (not shown) is housed. This housing is covered by a cover 47. The cover 47 has a hole 47a for inserting a power supply cable. The number of the radiation fins 46c is not limited to five and can be arbitrarily changed.

  Hereinafter, a configuration for controlling the tilt angle of the lamp 40 with respect to the frame 20 and its operation will be described mainly with reference to FIGS. 4 and 5. In the following description, one support plate 60 connecting the frame body 20 and the lamp body 40 so as to be rotatable and its peripheral members will be representatively described, and description of the other constituent members will be omitted.

  As described above, the lamp body 40 is provided to be tiltable with respect to the frame body 20 via the two support plates 60, 60. FIG. 4 shows a state in which the lamp 40 is disposed at a second rotation position where the lamp 40 is inclined with respect to the frame 20 fixed to the ceiling, and FIG. 5 shows a state in which the lamp body 40 is disposed at a first rotation position where the lamp body 40 is made coaxial.

  When the lamp body 40 is turned to the second rotation position as shown in FIG. 4, the optical axis O of the lamp body 40 is inclined with respect to the central axis P, and the light emitted from the light emitting section 32 moves vertically downward. Irradiated in a direction (second direction) inclined with respect to. On the other hand, when the lamp body 40 is turned to the first turning position as shown in FIG. 5, the optical axis O of the lamp body 40 overlaps with the central axis P, and the light emitted from the light emitting section 32 is vertically downward ( (First direction).

  The projecting portion 28 of the frame body 20 that supports the lamp body 40 has a first rotation regulating surface 11, a second rotation regulating surface 12, and a third rotation regulating surface 13. The first and second rotation restricting surfaces 11 and 12 are provided side by side along the illustrated lower edge of the recess 10 on the outer surface side of the protruding portion 28. The second rotation restricting surface 12 is a flat surface orthogonal to the center axis P of the frame 20, and the first rotation restricting surface 11 is a surface inclined with respect to the second rotation restricting surface 12. It is. Specifically, the first rotation restricting surface 11 is inclined upward in the figure continuously with an end (right end in the drawing) of the second rotation restricting surface 12 on the opposite side to the direction in which the lamp body 40 tilts. It is a flat surface. The third rotation restricting surface 13 is a flat surface that extends downward from the second rotation restricting surface 12 in parallel with the central axis P, as shown in FIG.

  On the other hand, the support plate 60 has a first contact surface 61 that contacts the first rotation restricting surface 11 of the protruding portion 28, a second contact surface 62 that contacts the second rotation restricting surface 12, and It has a third contact surface 63a that contacts the third rotation restricting surface 13. The third abutment surface 63a is provided on a reinforcing portion 63 that protrudes a part of the support plate 60. The first to third contact surfaces 61, 62, 63a are end surfaces of the support plate 60, respectively, and are surfaces orthogonal to the surface of the support plate 60. The first and second abutment surfaces 61 and 62 are provided on the edge of the support plate 60 on the opposite side of the lamp body 40 with respect to the rotation screw 29a.

  The reinforcing portion 63 is a substantially rectangular plate piece protruding vertically downward in a state where the support plate 60 is rotated to the posture shown in FIG. The third contact surface 63a of the reinforcing portion 63 is a surface orthogonal to the second contact surface 62. The shape of the reinforcing portion 63 is not limited to the illustrated one, and can be arbitrarily changed.

  A notch 64 is provided between the first and second contact surfaces 61 and 62. The notch 64 is provided so that the support plate 60 does not interfere with the first rotation control surface 11 and / or the second rotation control surface 12 of the protruding portion 28 when the support plate 60 is rotated. I have. If the notch 64 is not provided, an imaginary line where the first contact surface 61 and the second contact surface 62 intersect is shifted from a center line passing through the center of the insertion hole 65 of the support plate 60. Placed in the position.

  For example, when the lamp body 40 is turned clockwise in the drawing from the second turning position shown in FIG. 4 to the first turning position shown in FIG. 5, the first contact surface of the support plate 60 is turned on. 61 abuts on the first rotation restricting surface 11 of the protruding portion 28 of the rotary frame 24 to restrict further rotation of the lamp body 40. The angle of the first contact surface 61 of the support plate 60 is set such that the optical axis O of the lamp body 40 is aligned with the frame 20 when the first contact surface 61 is in contact with the first rotation regulating surface 11. Are formed at an angle parallel to the central axis P.

  On the other hand, when the lamp body 40 is rotated in the counterclockwise direction in the figure from the first rotation position shown in FIG. 5 to the second rotation position shown in FIG. The surface 62 abuts on the second rotation restricting surface 12 of the protruding portion 28 of the rotation frame 24, and restricts further rotation of the lamp body 40. The angle of the second contact surface 62 of the support plate 60 is set such that the optical axis O of the lamp 40 is aligned with the frame 20 when the second contact surface 62 is in contact with the second rotation regulating surface 12. Is formed at an angle that is inclined with respect to the central axis P.

  In other words, the angle formed by the first contact surface 61 and the second contact surface 62 of the support plate 60 is defined by the first rotation restricting surface 11 and the second rotation restricting surface 12 of the protruding portion 28. The angle is made smaller by the tilt angle of the lamp body 40 than the angle. In other words, when the angles of the first and second rotation restricting surfaces 11 and 12 of the protruding portion 28 are fixed, the angle between the first contact surface 61 and the second contact surface 62 of the support plate 60 is formed. By adjusting the tilt angle, the tilt angle of the lamp body 40 with respect to the frame 20 can be arbitrarily changed.

  When the lamp body 40 is located at the second pivot position shown in FIG. 4, the third contact surface 63a of the reinforcing portion 63 protruding from the vicinity of the lower end of the support plate 60 in the drawing is the third contact surface 63a of the protruding portion 28. Abuts on the rotation restricting surface 13. In the state of FIG. 5 in which the lamp 40 is arranged coaxially with the frame 20, the lamp 40 is moved with respect to the load acting between the first contact surface 61 and the first rotation regulating surface 11. The weight acting between the second contact surface 62 and the second rotation regulating surface 12 in the state of FIG. For this reason, a reinforcing portion 63 that receives a load when the lamp body 40 is tilted to the second rotation position shown in FIG. 4 is provided.

  In addition, in order to support a stronger load in a state where the lamp body 40 is located at the second rotation position, the area of the second contact surface 62 of the support plate 60 is made larger than the area of the first contact surface 61. I made it bigger. In the present embodiment, since the support plate 60 is formed of one metal plate, the length of the second contact surface 62 in the direction orthogonal to the rotation axis Q is set to the rotation axis Q of the first contact surface 61. It is longer than the length in the direction orthogonal to.

  As described above, according to the present embodiment, the first and / or second contact surfaces 61 and 62 are provided at the edges of the support plate 60 fixed to the lamp body 40 and separated from the lamp body 40. Alternatively, the inclination angle of the lamp body 40 with respect to the frame 20 can be changed by a slight design change only by changing the inclination angle of the second contact surfaces 61 and 62. Therefore, according to the present embodiment, the tiltable angle of the lamp body 40 can be changed easily and inexpensively simply by replacing the support plate 60 having different angles of the first and second contact surfaces 61 and 62. .

  Further, according to the present embodiment, in a state where the lamp body 40 is disposed at the second rotation position shown in FIG. 4, the second contact surface 62 of the support plate 60 is restricted to the second rotation of the protruding portion 28. A state in which the lamp body 40 can be in contact with the surface 12 and the third contact surface 63a of the reinforcing portion 63 can be in contact with the third rotation regulating surface 13 of the protruding portion 28, and the lamp body 40 is inclined at a predetermined angle. Can be securely held. At this time, since the second contact surface 62 is made larger than the first contact surface 61, the lamp body 40 can be reliably held at a predetermined angle in a state where the lamp body 40 is inclined and the weight is easily applied.

  As described above, the embodiments of the present invention have been described. However, the above-described embodiments have been presented as examples, and are not intended to limit the scope of the invention. The embodiment described above can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. The embodiments described above are included in the scope and the gist of the invention, and are also included in the invention described in the claims and their equivalents.

  For example, in the above-described embodiment, one end of each of the two support plates 60 is fixed to the lamp body 40 and the other end is rotatably connected to the frame 20. However, the present invention is not limited to this. May be fixed to the frame 20 and the other end is rotatably connected to the lamp 40.

  10 recess, 11 first rotation regulating surface, 12 second rotation regulating surface, 20 frame, 21 fixed spring, 22 decorative frame, 24 rotating frame, 26 reflector , 28 projecting part, 29a rotating screw, 30 light source module, 31 light emitting surface, 32 light emitting unit, 40 lamp body, 60 support plate, 61 first contact surface, 62 second Abutment surface, 80: plate piece, 100: lighting device, O: optical axis, P: central axis, Q: rotation axis.

Claims (4)

A fixing member for fixing to the mounting portion;
A lamp body having a light source;
A light source that is fixed to one of the fixing member and the lamp body, is rotatably attached to the other of the fixing member and the lamp body via a rotation shaft, and emits light from the light source in a first direction. 1 with respect to the fixed member, between the first rotation position and a second rotation position in which light emitted from the light source is directed in a second direction different from the first direction. A rotation support member rotatably supported about
The rotation support member has one end fixed to one of the fixing member and the lamp body, and a first contact provided at a predetermined angle at the other end opposite to the one end with respect to the rotation shaft. A contact surface and a second contact surface,
The other of the fixing member and the lamp body contacts the first contact surface of the rotation support member in a state where the lamp body is disposed at the first rotation position, and the lamp body rotates. A first rotation restricting surface for restricting the rotation of the lamp body and the rotation of the lamp body by contacting the second contact surface of the rotation support member with the lamp body disposed at the second rotation position. Having a second rotation regulating surface for regulating movement,
Lighting equipment. The fixing member is a frame fixed to the ceiling of the building,
The first direction is vertically downward from the ceiling to the floor,
The second contact surface is larger than the first contact surface;
The lighting device according to claim 1. A third contact abutting on a third rotation regulating surface provided on the other of the fixed member and the lamp body in a state where the lamp body is arranged at the second rotation position; Further comprising a reinforcing portion having a surface,
The lighting device according to claim 2. A fixing member for fixing to the mounting portion;
A lamp body having a light source;
A rotating support member having one end fixed to one of the fixing member and the lamp body, and rotatably attached to the other of the fixing member and the lamp body via a rotating shaft, wherein the lamp body is A first contact that restricts the rotation of the lamp by contacting a first rotation restricting surface provided on the other of the fixing member and the lamp in a state where the lamp is disposed at a first rotation position relative to the fixing member. A contact surface, and a second rotation restricting surface provided on the other of the fixing member and the lamp body in a state where the lamp body is disposed at a second rotation position with respect to the fixing member; A rotation support member having a second contact surface for restricting rotation at the other end opposite to the one end with respect to the rotation axis;
Lighting device having a.