JP2008053148A - Embedded luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure a wide oscillating range of a lamp body in an embedded luminaire when the lamp body is provided to freely oscillate with a reduced space from a wall surface of an embedding hole. <P>SOLUTION: The embedded luminaire comprises the lamp body 5, a cylindrical support frame 3 supporting the lamp body 5, and a spiral coil spring 2 having an inside diameter substantially equal to the outside diameter of the support frame 3 and an outside diameter larger than the opening diameter of the embedding hole C2. The support frame 3 is fitted in the embedding hole C2. A radially inside end part 2a of the coil spring 2 fastens and holds the outer circumferential surface of the support frame 3, and a radially outside end part 2b of the coil spring 2 is disposed around the embedding hole C2 in a back surface C3 of a luminaire mounting surface C1. Therefore, even if the lamp body 5 is inclined by oscillation, contact of the lamp body 5 with the coil spring 2 can be avoided, and the oscillating range of the lamp body 5 can be extended. Further, since it is the coil spring 2 that fixes the support frame 3, an extended clearance between the wall surface of the embedding hole C2 and the support frame 3 for using the elastic force of the spring is not needed, and this clearance can be minimized. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an embedded lighting fixture that is attached to an embedded hole formed in an appliance mounting surface.

  As a conventional embedded lighting fixture, for example, a ceiling-embedded lighting fixture that is embedded in an opening of an embedded hole formed in the ceiling and fixed to the ceiling by a leaf spring is known (for example, Patent Document 1). reference). The luminaire includes a lamp case in which a lamp is housed and a light outlet through which light from the lamp is emitted, a frame disposed on the outer periphery of the light outlet of the lamp case, and the lamp case. And a leaf spring extending obliquely in the lateral direction.

The leaf spring can be engaged with the peripheral edge of the opening of the ceiling using an elastic force, and is composed of two first leaf springs and two second leaf springs having a shorter length than the first leaf spring. Is done. The two first leaf springs are arranged to face each other with the lamp case interposed therebetween, and the two second leaf springs are arranged to face each other with the lamp case sandwiched in a direction substantially orthogonal to the direction in which the first plate springs face each other. According to the present luminaire, the fixing at the four positions by the two sets of leaf springs arranged to face each other orthogonally enables stable fixing to the ceiling and prevents the frame at the lower end of the lamp case from being distorted. It is possible to prevent a gap from being generated between the ceiling and the frame. In addition, the first leaf springs are longer than the second leaf springs, and two of them are arranged opposite to each other. Therefore, the first leaf springs are first engaged with the ceiling, and then the second leaf springs are engaged with the ceiling. You just need to match. For this reason, for example, the four leaf springs have the same length, and the attaching operation of the lighting fixture is facilitated as compared with the case where they are simultaneously engaged with the ceiling.
JP 2006-40773 A

  However, in the technology described in Patent Document 1, in order to fix the frame to the ceiling, in order to make full use of the elastic force of the leaf spring, it is necessary to provide a gap between the wall surface of the opening of the ceiling and the frame, When the frame is shifted downward together with the lamp case, that is, the lamp body, the gap between the wall surface of the opening portion of the ceiling and the frame can be seen from below and the appearance may be deteriorated. Further, since the leaf spring protrudes to the back side of the ceiling, if the lamp case located on the back side of the ceiling is provided so as to be swingable, the inclined lamp case contacts the leaf spring to prevent the lamp case from swinging. There was a thing. Therefore, the swing range of the lamp case is limited, and it may be difficult to irradiate light in a desired direction.

  The present invention has been made to solve the above-described conventional problems, can reduce the gap with the wall surface of the embedding hole, and moreover, in the case where the lamp body is provided to swing freely, An object of the present invention is to provide an embedded luminaire that can widen the swing range of the lamp.

  In order to achieve the above object, an invention of claim 1 is directed to an embedded lighting fixture to be attached to an embedding hole formed on the fixture mounting surface, and a lamp, and a cylindrical support frame that supports the lamp. A spiral spring having an inner diameter substantially equal to the outer diameter of the support frame and an outer diameter larger than the opening diameter of the embedding hole, and the support frame is fitted into the embedding hole. The inner diameter side end of the winding spring clamps and holds the outer peripheral surface of the support frame, and the outer diameter side end of the winding spring is arranged at the periphery of the embedding hole on the back surface of the instrument mounting surface. is there.

  According to a second aspect of the present invention, in the embedded luminaire according to the first aspect, the support frame is provided with a spiral groove on an inner peripheral surface, and the outer peripheral surface is tightened to an inner diameter side end of the winding spring. The first frame body to be held and the second frame body provided with a spiral groove on the outer peripheral surface, and the second frame body has the groove of the second frame body as the first frame body. And screwed into the first frame in accordance with the groove of the frame.

  According to a third aspect of the present invention, in the embedded lighting apparatus according to the first or second aspect, the embedded hole has a substantially circular shape in plan view, the spiral spring has a spiral shape, and The outer shape is formed into a substantially inverted truncated cone shape, and the conditional expression d1 <φ is satisfied when the diameter of the embedding hole is φ and the diameter of the inner diameter side end of the winding spring is d1.

  According to the invention of claim 1, it is not necessary to widen the gap between the wall surface of the embedding hole and the support frame in order to make use of the elastic force of the spring, and this gap can be reduced. Further, since the winding spring 2 is disposed around the periphery of the embedding hole on the back surface of the fixture mounting surface, even when the lamp body is provided so as to be swingable, avoid contact between the lamp body and the winding spring, The body swing range can be widened.

  According to the invention of claim 2, by adjusting the screwing amount of the second frame body with respect to the first frame body, the support frame is formed in the embedding hole corresponding to the embedding holes of different depths. Can be attached.

  According to the invention of claim 3, the portion of the winding spring having a diameter larger than the embedding hole and constricted in the embedding hole presses itself against the wall surface of the embedding hole by a restoring force. The support frame attached to the spring can be securely fixed to the embedding hole. Therefore, the frame shift of the support frame can be prevented.

  Hereinafter, an embedded lighting apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4A and 4B. FIG.1 and FIG.2 shows the structure of the implantable lighting fixture 1 which concerns on 1st Embodiment. The embedded luminaire 1 is attached to, for example, an embedded hole formed on a fixture mounting surface of a ceiling. For example, the embedded hole has a substantially circular shape in plan view. The embedded lighting device 1 includes a spiral spring 2 in a plan view, a cylindrical support frame 3 fitted in the spring 2, and a main body attached to the embedded hole by the spring 2 and the support frame 3. 4 and a lamp body 5 provided so as to freely swing with respect to the main body 4. Below, each component of the embedded type lighting fixture 1 is demonstrated in detail.

  The coil spring 2 has a spiral shape as described above and a spiral shape, and the outer shape is formed in a substantially inverted truncated cone shape. The winding spring 2 is wound, for example, clockwise so as to expand the diameter from below to above, the diameter of the embedding hole is φ, the diameter of the inner diameter side end 2a of the winding spring 2 is d1, and the winding spring 2 Conditional expression d1 <φ <d2 is satisfied when the diameter of the outer diameter side end 2b is d2. Further, the diameter d1 of the inner diameter side end 2a of the winding spring 2 is substantially equal to the outer diameter of the support frame 3, so that the winding spring 2 can clamp and hold the outer periphery of the support frame 3.

  Furthermore, the winding spring 2 has, for example, a bent portion 2c formed by bending the tip and a convex portion 2d that is convex in the axial direction at the lower portion. The tip of the winding spring 2 in the bent portion 2c is bent in the axial direction of the winding spring 2 as shown in the enlarged bottom view of the broken line frame A portion in FIG. The convex portion 2d is formed by bending a part of the winding spring 2 in the axial direction, as shown in the enlarged perspective view of the one-dot broken line frame B portion in FIG. The number of the bent portions 2c and the convex portions 2d is desirably three or more in total so that the winding spring 2 can be securely attached to the support frame 3. In addition, although the three convex parts 2d are shown in FIG.1 and FIG.2, it is not limited to this number. Moreover, the winding method of the winding spring 2 is not limited to the above.

  The support frame 3 is made of, for example, a cylindrical member corresponding to the shape of the embedding hole, and has a flange 31 over the entire circumference at the lowermost portion of the outer peripheral surface. Furthermore, the support frame 3 has an insertion hole 3a into which the tip of the bent portion 2c of the winding spring 2 is inserted and an insertion hole 3b into which the convex portion 2d of the winding spring 2 is inserted on the outer peripheral surface. The insertion holes 3a and 3b are provided above the flange portion 31, and the positions and the numbers of the insertion holes 3a and 3b are set to the positions and the numbers of the bent portions 2c and the convex portions 2d of the winding spring 2, respectively. It corresponds. Further, the shapes of the insertion holes 3a and 3b also correspond to the shapes of the bent portion 2c and the convex portion 2d of the winding spring 2, respectively. For example, the opening shape of the insertion hole 3a is illustrated as a hexagon in FIGS. 1 and 2, and the opening shape of the insertion hole 3b is illustrated as a rectangle in FIG.

  The main body 4 includes a lamp body support 41 that supports the lamp body 5 in a freely swingable manner, a cone 42 that supports the lamp body support tool 41 so as to be movable in a direction along the fixture mounting surface, and the lamp body support tool 41. And an attachment spring 43 for attaching the cone 42 to the support frame 3. These are arranged in the order of the lamp support 41, the attachment spring 43, and the cone 42 from above, and are fixed together and fitted into the support frame 3 from below.

  The lamp body support 41 integrally includes a board 411 having a circular outer shape and a bearing portion 412 that is provided perpendicular to the upper surface of the board 411 and through which a shaft that pivotally supports the lamp body 5 is inserted. Have. The bearing portion 412 is provided with a stopper for restricting the range of the swing angle of the lamp body 5. The substrate 411 includes an opening 411a through which light emitted from the upper lamp body 5 passes, and a long hole 411b into which a screw 61 for fixing the lamp body support tool 41 to the cone 42 is inserted. The bearing 412 is provided in the vicinity of one end of the opening 411a. The number of the long holes 411b is two, for example, and the sizes thereof are substantially equal, and the two long holes 411b are provided in parallel. The axis of the swing shaft is substantially orthogonal to the longitudinal direction of the long hole 411b. Note that the shape of the lamp support 41 is not limited to the above.

  The cone 42 is formed of a cylindrical member having a through-hole through which light emitted from the lamp body 5 passes, and the size of the outer shape thereof is substantially equal to that of the lamp body support tool 41 in plan view. The above-mentioned through-hole is expanded in a stepped manner downward. Here, the upper opening of the through hole is referred to as a light projecting opening 42a. The position of the light projection opening 42a corresponds to the opening 411a of the lamp support 41, and the light projection opening 42a overlaps the opening 411a in plan view. Further, the opening area of the light projecting opening 42 a is smaller than that of the opening 411 a of the lamp body support tool 41.

  Further, the cone 42 has a screw hole (not shown) into which the screw 61 inserted into the elongated hole 411b of the lamp body support 41 is inserted on the upper surface, and extends to the lowermost part of the outer peripheral surface over the entire circumference. It has the collar part 421 provided. The outer diameter of the collar part 421 is larger than the outer diameter of the part other than the collar part 421 of the cone 42. The upper surface of the cone 42 is a plane orthogonal to the outer peripheral surface, and is substantially parallel to the instrument mounting surface when mounted on the ceiling. The shape of the cone 42 is not limited to the above.

  The mounting spring 43 is made of, for example, a metal plate-like member, and has an upper bottom 43a formed in accordance with the shape of the upper surface of the cone 42, and an upper bottom 43a at each end of the upper bottom 43a. And a drooping portion 43b which is orthogonal and shaped according to the shape of the side surface of the cone 42. The upper bottom portion 43a is formed so as not to block the light projection opening 42a of the cone 42, and a screw hole 43c is provided at a portion corresponding to the screw hole of the cone 42 of the upper bottom portion 43a. Furthermore, the attachment spring 43 is continuous with the drooping portion 43 b and is formed according to the shape of the side surface of the cone 42, and has a latching portion 43 d with which the upper end is latched on the support frame 3. The upper end portion of the latching portion 43d is bent and provided on the upper side so as to be easily attached to the support frame 3, and similarly provided on the lower side so as not to easily come off from the support frame 3. And a tapered surface. Further, the height of the upper end is substantially equal to the height of the support frame 3.

  The lamp support 41, the attachment spring 43, and the cone 42 are fixed by screws 61 to form the main body 4. At the time of fixing, the screw 61 is inserted into the elongated hole 411b of the lamp support 41 and the screw hole 43c of the mounting spring 43 from above and screwed into the screw hole of the cone 42. When the screw 61 is inserted into the elongated hole 411 b of the lamp body support 41, the coil spring 62 and then the washer 63 are passed through the screw 61. This washer 63 is a flat washer, for example. Thus, since the lamp support 41 is fixed by the screw 61 via the coil spring 62, the lamp support 61 is moved along the upper surface of the cone 42 with respect to the cone 42 by the elastic force of the coil spring 62. It is possible to move the lens to the position and to prevent rattling during movement.

  The moving direction of the lamp support 41 is a direction along the fixture mounting surface because the upper surface of the cone 42 is substantially parallel to the fixture mounting surface. When moving, the lamp support 41 moves in the longitudinal direction of the long hole 411b. When the lamp support 41 does not move in the direction along the fixture mounting surface, the opening 411a of the lamp support 41 is located at a position corresponding to the projection opening 42a of the cone 42 and overlaps in plan view.

  The lamp body 5 has a light irradiation opening on its lower surface, and houses therein a light source (not shown) such as a lamp and a socket (not shown) for holding the light source. The light emitted from the light source is emitted from the light irradiation opening of the lamp body 5. The positions of the light irradiation openings correspond to the opening 411a of the lamp support 41 and the light projecting opening 42a of the cone 42. When the lamp support 41 does not move in the direction along the fixture mounting surface, that is, when the lamp 5 supported by the lamp support 41 does not move in the direction along the fixture mounting surface, the light irradiation opening Is overlapped with the opening 411a of the lamp support 41 and the projection opening 42a of the cone 42 in plan view, and the axis of the lamp 5 is substantially coincident with the axis of the projection opening 42a of the cone 42. The light source is, for example, an incandescent bulb, a halogen lamp, a metal halide lamp, a bulb-type fluorescent lamp, or a high-intensity LED lamp, but is not limited thereto. The lamp 5 is connected to a power line (not shown) wired on the back of the ceiling, and power is supplied from the power line to the light source. For this reason, even if the lamp body 5 and the main body section 4 or the lamp body 5, the main body section 4 and the support frame 3 are detached from the ceiling, they are suspended from the ceiling by the power line, so that they can be prevented from falling.

  A bearing portion 51 is provided in the vicinity of one end portion of the periphery of the light irradiation opening of the lamp body 5. A screw 81 is inserted into the bearing portion 51, and the screw is further inserted into the bearing portion 412 of the lamp body support tool 41. A nut 82 is tightened at the tip of the screw 81 inserted through these bearing portions 51, 412. At this time, the bearing portion 51 of the lamp body 5 and the bearing portion 412 of the lamp body support tool 41 are fixed so that the lamp body 5 can swing by adjusting the tightening torque of the screw 81 and the nut 82. The With the above configuration, the lamp body 5 is pivotally supported by the screw 81 inserted through the bearing portion 412 of the lamp body support 41, and the screw 81 is used as a swing shaft so that the lamp body 5 can swing with respect to the lamp body support 41. It is done. Therefore, the light irradiation direction can be changed by changing the swing angle of the lamp body 5. This swing angle can be arbitrarily set. The screw 81 may be inserted through the bearing portion 412 of the lamp body support 41 and the bearing section 51 of the lamp body 5 in the reverse order.

  With the above configuration, the lamp support 41 and the lamp 5 of the main body 4 can be moved in the direction along the fixture mounting surface. For this reason, the swing angle of the lamp body 5 can be set so that the optical axis of the light source of the lamp body 5 does not overlap the cone 42 of the main body 4. As a result, the light irradiation range can be set wide.

  3 (a) and 3 (b) show a state after each component is attached in the embedded luminaire 1. FIG. First, attachment of the support frame 3 to the winding spring 2 will be described. When the winding spring 2 is attached to the support frame 3, the support frame 3 is fitted into the winding spring 2, and the inner diameter side end 2 a of the winding spring 2 tightens and holds the outer peripheral surface of the support frame 3. At this time, each of the bent portion 2 c and the convex portion 2 d of the winding spring 2 is inserted into the insertion holes 3 a and 3 b of the support frame 3. As described above, each of the insertion holes 3a and 3b of the support frame 3 is provided at a position corresponding to the bent portion 2c and the convex portion 2d of the winding spring 2, so that the support frame 3 is securely attached to the winding spring 2. Can be fixed to.

  Next, attachment of the main body 4 to the support frame 3 will be described. In FIG.3 (b), illustration of the winding spring 2 is abbreviate | omitted. Before the main body 4 is attached to the support frame 3, the lamp support 41, the mounting spring 43, and the cone 42 that support the lamp 5 are fixed to each other, and the main body 4 is assembled. Thereafter, the lamp body 5 is inserted into the support frame 3 from below the support frame 3, and then the main body portion 4 is fitted into the support frame 3.

  When the main body portion 4 is fitted into the support frame 3, the collar portion of the cone 42 (not shown in FIG. 3B) and the upper end portion of the latching portion 43 d of the attachment spring 43 sandwich the support frame 3. It is so fitted. The cone 42 and the attachment spring 43 fix themselves to the support frame 3 by sandwiching the support frame 3. In this way, the lamp body 5 and the main body portion 4 including the lamp body support tool 41, the attachment spring 43 and the cone 42 are supported by the support frame 3. Since the lamp body 5 is supported by the lamp body support tool 41, the lamp body 5 is supported by the support frame 3 through the lamp body support tool 41, the attachment spring 43, and the cone 42 with the above configuration.

  4 (a) and 4 (b) show the usage state of the embedded lighting fixture 1. FIG. The support frame 3 to which the winding spring 2 is attached is fitted into the embedding hole C2 formed in the instrument attachment surface C1 such as the ceiling C. As described above, when the diameter of the embedding hole C2 is φ, the diameter of the inner diameter side end 2a of the winding spring 2 is d1, and the diameter of the outer diameter side end 2b of the winding spring 2 is d2. Conditional expression d1 <φ <d2 is satisfied. When the winding spring 2 and the support frame 3 are fitted into the embedding hole C2, the outer diameter side end 2b of the winding spring 2 is narrowed to be smaller than the diameter of the embedding hole C2, thereby embedding the winding spring 2. It can be fitted into the hole C2. Since the winding spring 2 is wound clockwise so as to increase the diameter from below to above, the winding spring 2 and the supporting frame 3 can be easily inserted into the embedding hole C2 by pushing up the supporting frame 3 while rotating counterclockwise. Can be fitted. At this time, since the winding spring 2 is being fixed to the support frame 3 by the bending part 2c and the convex part 2d, the co-rotation of the winding spring 2 accompanying rotation of the support frame 3 can be prevented.

  The support frame 3 is pushed up to a position where the upper surface of the collar portion 31 comes into contact with the instrument mounting surface C1. When the support frame 3 is pushed up to the position, the outer diameter side end 2b positioned at the upper part of the winding spring 2 advances from the embedded hole C2 to the back surface C3 of the instrument mounting surface C1. Since the diameter of the outer diameter side end 2b of the winding spring 2 is larger than that of the embedding hole C2, the outer diameter side end 2b is constricted by the embedding hole C2 when advanced from the embedding hole C2. Released from. Therefore, the diameter of the outer diameter side end portion 2b is expanded, and the end portion 2b is disposed at the periphery of the embedding hole C2 on the back surface C3 of the instrument mounting surface C1. Thus, the outer diameter side end 2b of the winding spring 2 is locked to the periphery of the embedding hole C2 on the back surface C3, and the support frame 3 attached to the winding spring 2 is fixed to the embedding hole C2 of the ceiling C. The At this time, the support frame 3 is locked to the winding spring 2.

  With the above configuration, since the spring for fixing the support frame 3 to the ceiling C is the wound spring 2, it is not necessary to widen the gap between the wall surface of the embedding hole C2 and the support frame 3 in order to make use of the elastic force of the spring. This gap can be reduced. For this reason, even when the support frame 3 is displaced downward, it is difficult to see the gap from below, so that it is possible to prevent the appearance from deteriorating. In addition, since the gap is small, the opening below the support frame 3 can be made larger when the embedding hole C2 has an opening of a predetermined size. Therefore, the opening below the cone 42 disposed inside the support frame 3 can be enlarged, and the efficiency of the lighting fixture 1 can be improved. Further, when the winding spring 2 is fixed to the ceiling C, the portion of the winding spring 2 that has a diameter that is larger than the embedding hole C2 in a free state and that is confined in the embedding hole C2 is itself restored by a restoring force. Is pressed against the wall surface of the embedding hole C2. For this reason, the support frame 3 attached to the winding spring 2 can be reliably fixed to the embedding hole C2 of the ceiling C, and the frame shift of the support frame 3 can be prevented. Here, the above-mentioned fixture efficiency refers to the ratio of the luminous flux emitted outside the fixture when the light source is mounted on the embedded lighting fixture 1 and lit with respect to the total luminous flux emitted when the light source is turned on. Point to.

  After the support frame 3 is fixed to the embedding hole C <b> 2 of the ceiling C by the winding spring 2, the lamp body 5 and then the main body portion 4 are inserted into the support frame 3 from below. The main body 4 is fitted into the support frame 3, and a hooking portion (not shown in FIG. 4B) of the mounting spring of the main body 4 and the collar 421 of the cone 42 sandwich the support frame 3. At this position, the main body 4 is fixed to the support frame 3. Since the main body 4 is only fixed with the support frame 3 interposed therebetween, the main body 4 can be rotated in a direction parallel to the instrument mounting surface C1 with the axis of the cone 42 (indicated by a dashed line) as the central axis. When the main body 4 rotates, the lamp 5 supported by the main body 4 also rotates.

  As described above, the lamp body 5 can be swung, can move along the direction of the instrument mounting surface C1, and can rotate in parallel with the instrument mounting surface C1. Therefore, when the embedded luminaire 1 is attached to the ceiling by a leaf spring as in the prior art, the lamp body 5 is mounted on the ceiling when the lamp body 5 is tilted by setting the swing angle of the lamp body 5. In contact with the leaf spring protruding to the back side, the swinging of the lamp body 5 was hindered, and the swing range was sometimes limited. Further, when the lamp body 5 is rotated while the lamp body 5 is tilted, the lamp body 5 may come into contact with the leaf spring and get caught, thereby preventing the lamp body 5 from rotating. Therefore, the light from the lamp 5 may not be irradiated in a desired direction.

  On the other hand, according to the present embodiment, the winding spring 2 expands along the back surface C3 of the instrument mounting surface C1 and is disposed at the periphery of the embedded hole C2 of the back surface C3, so that the lamp body 5 and the winding spring 2 are in contact with each other. Can be avoided. Accordingly, the swing range of the lamp 5 can be set wide, and light irradiation in a desired direction can be performed. Further, when the lamp body 5 is tilted, the lamp body 5 comes into contact with the outer diameter side end 2b of the winding spring 2, and in this state, the lamp body 5 is rotated in a direction parallel to the fixture mounting surface C1. The lamp body 5 slides and rotates along the portion of the outer diameter side end 2b of the winding spring 2 that contacts the lamp body. Therefore, since the rotation of the lamp body 5 is not hindered, it becomes possible to irradiate the light of the lamp body 5 in a desired direction.

  Next, an embedded lighting fixture 1 according to a second embodiment of the present invention will be described with reference to FIGS. 5 (a), 5 (b), 5 (c) and FIG. The embedded lighting fixture 1 according to the second embodiment is different in the configuration of the winding spring 2 and the support frame 3 from the configuration of the first embodiment. 5A and 5B show the configuration of the winding spring 2 and the support frame 3 according to the second embodiment. Unlike the configuration of the first embodiment, the winding spring 2 is not spiral but has a substantially plate shape when viewed from the front. Moreover, the said support frame 3 has the attachment groove | channel 3c for attaching the winding spring 2 in an outer peripheral surface unlike the structure of 1st Embodiment. In the second embodiment, the same members as those in the first embodiment are denoted by the same reference numerals (hereinafter the same).

  The winding spring 2 has a spiral shape in a plan view and a substantially plate shape in a front view, and has a bent portion 2c and a convex portion 2d at the inner diameter side end portion 2a. The coil spring 2 is wound, for example, counterclockwise from the inside to the outside. In addition, although two convex parts 2d are illustrated in FIG. 5A, the number of convex parts 2d is not limited to the above. In order to stably fix the winding spring 2 to the support frame 3, the total number of the bent portions 2c and the convex portions 2d is preferably 3 or more. Moreover, the winding method of the winding spring 2 is not limited to the above, For example, it may be right-handed.

  A mounting groove 3 c is provided on the entire outer periphery of the support frame 3 over the entire circumference. The mounting groove 3 c is, for example, a square groove, a U-shaped groove, or a V-shaped groove, and the width and depth thereof are set according to the thickness of the winding spring 2. In the bottom of the mounting groove 3c, insertion holes 3a and 3b are provided corresponding to the bent portion 2c and the convex portion 2d of the winding spring 2, respectively. The diameter of the inner diameter side end 2a of the winding spring 2 is substantially equal to a value obtained by subtracting twice the depth of the mounting groove 3c from the outer diameter of the support frame 3, and the winding spring 2 is attached to the support frame 3. When attached to the groove 3c, the support frame 3 can be clamped and held.

  FIG. 5C shows a state after the winding spring 2 is attached to the support frame 3. When attaching the winding spring 2 to the support frame 3, the support frame 3 is fitted into the winding spring 2, and the inner diameter side end 2 a of the winding spring 2 is fitted into the mounting groove 3 c of the support frame 3. The inner diameter side end 2 a of the winding spring 2 clamps and holds the outer peripheral surface of the support frame 3. At this time, each of the bent portion 2 c and the convex portion 2 d of the winding spring 2 is inserted into insertion holes 3 a and 3 b provided in the attachment groove 3 c of the support frame 3. As described above, each of the insertion holes 3 a and 3 b of the support frame 3 is provided at a position corresponding to the bent portion 2 c and the convex portion 2 d of the winding spring 2, so that the support frame 3 is securely attached to the winding spring 2. Can be fixed to.

  FIG. 6 shows the usage state of the winding spring 2 and the support frame 3. The support frame 3 to which the winding spring 2 is attached is fitted into the embedding hole C2 formed in the instrument attachment surface C1 such as the ceiling C. When the winding spring 2 and the support frame 3 are fitted into the embedding hole C2, the outer diameter side end 2b of the winding spring 2 is narrowed to be smaller than the diameter of the embedding hole C2, thereby embedding the winding spring 2. It can be fitted into the hole C2. Since the winding spring 2 is wound counterclockwise, the winding spring 2 and the supporting frame 3 can be easily fitted into the embedding hole C2 by pushing up the supporting frame 3 while rotating the supporting frame 3 clockwise. At this time, since the winding spring 2 is fixed to the support frame 3 by the bent portion 2c and the convex portion 2d, it is possible to prevent the winding spring 2 from rotating together with the rotation of the support frame 3.

  The support frame 3 is pushed up to a position where the upper surface of the collar portion 31 comes into contact with the instrument mounting surface C1. When the support frame 3 is pushed up to the position, the winding spring 2 advances from the embedding hole C2 to the back surface C3 of the instrument mounting surface C1. Since the diameter of the outer diameter side end 2b of the winding spring 2 is larger than that of the embedding hole C2, the outer diameter side end 2b is constricted by the embedding hole C2 when advanced from the embedding hole C2. Released from. Therefore, the diameter of the outer diameter side end portion 2b is expanded, and the end portion 2b is disposed at the periphery of the embedding hole C2 on the back surface C3 of the instrument mounting surface C1. Thus, the outer diameter side end 2b of the winding spring 2 is locked to the periphery of the embedding hole C2 on the back surface C3, and the support frame 3 attached to the winding spring 2 is fixed to the embedding hole C2 of the ceiling C. The At this time, the support frame 3 is locked to the winding spring 2. Also in the embedded lighting device 1 according to the second embodiment, the same effects as those of the first embodiment can be obtained.

  Next, an embedded lighting device 1 according to a third embodiment of the present invention will be described with reference to FIGS. 7 (a), (b), (c) and FIG. The embedded lighting fixture 1 according to the third embodiment is different in the configuration of the support frame 3 from the configuration of the second embodiment. 7A and 7B show the configuration of the support frame 3 according to the third embodiment. Unlike the structure of the second embodiment, the support frame 3 is divided into two parts at a substantially right angle to the axis, and is composed of two parts, an upper frame body 3A and a lower frame body 3B.

  The upper frame 3A has a spiral groove 3d on the inner peripheral surface and an attachment groove 3c on the upper portion of the outer peripheral surface (first frame). In the bottom of the mounting groove 3c, insertion holes 3a and 3b are provided corresponding to the bent portion 2c and the convex portion 2d of the winding spring 2, respectively. The lower frame 3B has a spiral groove 3 on the outer peripheral surface and a flange 31 disposed below and on the lowermost portion of the outer peripheral surface (second frame). The groove 3d of the upper frame 3A and the groove 3e of the lower frame 3B are formed, for example, counterclockwise from the lower side to the upper side. The inner diameter of the portion of the upper frame 3A where the groove 3d is provided is substantially equal to the outer diameter of the portion of the lower frame 3B where the groove 3e is provided. The groove 3d of the upper frame 3A and the groove 3e of the lower frame 3B are aligned with the groove 3d of the upper frame 3A by aligning the groove 3e of the lower frame 3B with the groove 3d of the upper frame 3A. Can be screwed into the upper frame 3A. The shapes of the grooves 3d and 3e are not limited to the above, and may be formed clockwise from the bottom to the top.

  FIG. 7C shows a state after the winding spring 2 is attached to the upper frame 3 </ b> A of the support frame 3. When the winding spring 2 is attached to the upper frame 3A, the upper frame 3A is fitted into the winding spring 2, and the inner diameter side end 2a of the winding spring 2 is fitted into the attachment groove 3c of the upper frame 3A. The inner diameter side end 2a of the winding spring 2 clamps and holds the outer peripheral surface of the upper frame 3A. At this time, each of the bent portion 2c and the convex portion 2d of the winding spring 2 is inserted into the insertion holes 3a and 3b provided in the attachment groove 3c of the upper frame 3A.

  FIG. 8 shows the usage state of the winding spring 2, the upper frame 3A, and the lower frame 3B. The upper frame body 3A of the support frame 3 to which the winding spring 2 is attached is fitted into an embedding hole C2 formed in an appliance attachment surface C1 such as the ceiling C. When the winding spring 2 and the upper frame 3A are fitted into the embedding hole C2, the outer diameter side end 2b of the winding spring 2 is narrowed to be smaller than the diameter of the embedding hole C2, thereby embedding the winding spring 2. It can be fitted into the insertion hole C2. Since the winding spring 2 is wound counterclockwise, the winding spring 2 and the upper frame body 3A can be easily fitted into the embedding hole C2 by pushing up the upper frame body 3A while rotating the upper frame body 3A clockwise. At this time, since the winding spring 2 is fixed to the upper frame 3A by the bent part 2c and the convex part 2d, it is possible to prevent the winding spring 2 from rotating together with the rotation of the upper frame 3A.

  As the upper frame 3A is pushed up, the winding spring 2 advances from the embedded hole C2 to the back surface C3 of the instrument mounting surface C1. Since the diameter of the outer diameter side end 2b of the winding spring 2 is larger than that of the embedding hole C2, the outer diameter side end 2b is constricted by the embedding hole C2 when advanced from the embedding hole C2. Released from. Therefore, the diameter of the outer diameter side end portion 2b is expanded, and the end portion 2b is disposed at the periphery of the embedding hole C2 on the back surface C3 of the instrument mounting surface C1. Thus, the outer diameter side end 2b of the winding spring 2 is locked to the periphery of the embedding hole C2 on the back surface C3, and the support frame 3 attached to the winding spring 2 is fixed to the embedding hole C2 of the ceiling C. The

  The lower frame 3B is inserted into the embedding hole C2 after the winding spring 2 and the upper frame 3B are arranged on the back surface C3 of the ceiling. Then, the lower frame 3B is screwed into the frame 3A by turning counterclockwise in accordance with the groove 3d of the upper frame 3A. The lower frame 3B is screwed into a position where the upper surface of the collar portion 31 comes into contact with the instrument mounting surface C1. The lower frame 3B screwed into the upper frame 3A is engaged with the winding spring 2 together with the upper frame 3A.

  With the above configuration, by adjusting the screw insertion amount of the lower frame 3B with respect to the upper frame 3A, the support frame 3 including the upper frame 3A and the lower frame 3B corresponding to the embedded holes C2 having different depths. Can be attached to the embedding hole C2. Further, when the lower frame 3B is screwed into the upper frame 3A, the screw is inserted into the upper frame 3A even after the collar portion 31 of the lower frame 3B comes into contact with the instrument mounting surface C1, The position of the lower frame 3B does not change, and instead, the upper frame 3A is pulled toward the lower frame 3B. Therefore, the lower frame 3B can be firmly fixed to the fixture mounting surface C1 on the ceiling by the elastic force of the winding spring 2 that locks the upper frame 3A. Moreover, also in the implantable lighting device 1 according to the third embodiment, the same operational effects as those of the first embodiment can be obtained.

  The present invention is not limited to the configuration of the above embodiment, and various modifications can be made according to the purpose of use. For example, the embedded lighting device 1 is not limited to the ceiling, and may be attached to a fixture mounting surface such as a wall.

1 is an exploded perspective view showing a configuration of an embedded lighting fixture according to a first embodiment of the present invention. The perspective view which shows the structure of the winding spring of the said embedded type lighting fixture, and a support frame. (A) is a perspective view which shows the state which attached the said winding spring to the said support frame, (b) is a perspective view which shows the state which attached the lamp body and main-body part of the said embedded type lighting fixture to the same support frame. (A) is sectional drawing which shows the use condition of the said winding spring and a support frame, (b) is sectional drawing which shows a state when the said lamp body and a main-body part are attached to the support frame of the state shown by (a). (A) is a disassembled perspective view which shows the structure of the winding spring and support frame of the embedded type lighting fixture which concerns on the 2nd Embodiment of this invention, (b) is a front view of the support frame, (c) is the same winding The perspective view which shows the state which attached the spring to the support frame. Sectional drawing which shows the use condition of the said winding spring and a support frame. (A) is a disassembled perspective view which shows the structure of the winding spring and support frame of an embedded type lighting fixture which concerns on the 3rd Embodiment of this invention, (b) is a front view of the support frame, (c) is the same winding The perspective view which shows the state which attached the spring to the support frame. Sectional drawing which shows the use condition of the said winding spring and a support frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Embedded lighting fixture 2 Winding spring 2a Inner diameter side edge part 2b Outer diameter side edge part 3 Support frame 3A Upper frame (1st frame)
3B Lower frame (second frame)
4 Body 5 Lamp C Ceiling C1 Instrument mounting surface C2 Recessed hole C3 Back

Claims (3)

In the embedded lighting fixture that is attached to the embedded hole formed in the fixture mounting surface,
A lamp,
A cylindrical support frame for supporting the lamp body;
A spiral spring having an inner diameter substantially equal to the outer diameter of the support frame and an outer diameter larger than the opening diameter of the embedding hole,
The support frame is fitted into the embedding hole,
The inner diameter side end of the coil spring holds the outer peripheral surface of the support frame tightly,
An end of the winding spring on the outer diameter side is disposed on the periphery of the embedding hole on the back surface of the instrument mounting surface. The support frame is
A first frame that is provided with a spiral groove on the inner peripheral surface, and the outer peripheral surface is clamped and held on the inner diameter side end of the winding spring;
A second frame body provided with a spiral groove on the outer peripheral surface,
2. The embedding according to claim 1, wherein the second frame body is screwed into the first frame body with a groove of the second frame body aligned with a groove of the first frame body. Type lighting fixture. The embedded hole has a substantially circular shape in plan view,
The winding spring has a spiral shape and an outer shape formed in a substantially inverted truncated cone shape. The diameter of the embedded hole is φ and the diameter of the inner diameter side end of the winding spring is d1. The embedded lighting device according to claim 1, wherein d1 <φ is satisfied.

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