JP4654166B2 - Recessed lighting fixture - Google Patents

Description

  The present invention relates to an embedded lighting fixture that is attached to an embedding hole formed on an appliance mounting surface such as a ceiling and has a variable light irradiation direction.

  Conventionally, as an embedded lighting fixture with variable light irradiation direction, it is supported by a support member so that the lamp can rotate horizontally, and it can contact each other to prevent the lamp from rotating horizontally over a predetermined angle. There is known a lighting device having a variable irradiation direction in which a pair of stoppers are provided on each of a lamp and a support member (see, for example, Patent Document 1).

In the above-described lighting fixture, the stopper on the support member side includes an attachment portion that is attached to the support member so as to move within a certain range in the same direction as the horizontal rotation of the lamp, and a protrusion that can contact the stopper on the lamp side, And an elastic portion for pressing the outer peripheral surface of the lamp. According to this lighting fixture, the horizontal rotation angle of the lamp can be increased. Moreover, since one stopper is provided with a protrusion part and an elastic part, the number of parts decreases and assembly workability | operativity improves. For this reason, cost reduction can be aimed at.
JP 2000-348528 A

  However, in the technique described in Patent Document 1, when the lamp, that is, the lamp body is swung in the vertical direction in order to change the light irradiation direction, the light emitted from the lamp body is blocked by the support member, and the light irradiation range is limited. May be.

  The present invention has been made to solve the above-described conventional problems, and an object thereof is to provide an embedded lighting fixture that can set a wide light irradiation range that varies depending on the swing angle of the lamp. .

  In order to achieve the above-mentioned object, the invention of claim 1 comprises a main body part attached to an embedding hole formed in the instrument attachment surface, and a lamp body provided so as to be swingable with respect to the main body part, In the embedded lighting fixture in which the light irradiation direction is variable, the lamp body is supported by a swing shaft that is movable with respect to the main body portion in a direction along the fixture mounting surface.

  According to a second aspect of the present invention, in the embedded luminaire according to the first aspect, the swing shaft is provided in the vicinity of one end of the periphery of the light irradiation port of the lamp body, and the axis of the lamp body And the vicinity of one end of the light projecting opening in a state where the axial center of the light projecting opening of the main body substantially coincides.

  According to the first aspect of the present invention, the optical axis of the lamp body can be prevented from overlapping the main body even when the lamp body is swung by moving the swing shaft in a direction along the fixture mounting surface. For this reason, the light irradiation range can be set wide.

  According to the invention of claim 2, since the axis of the swing shaft does not overlap the light irradiation port of the lamp body and the light projection opening of the main body, the number of swing shafts can be reduced to one, and The number can be one. Therefore, the size can be reduced.

  Hereinafter, an embedded lighting device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 thru | or FIG. 3 (a) (b) shows the structure and use condition of the embedded lighting fixture 1 which concerns on this embodiment. The embedded lighting fixture 1 includes, for example, a main body 3 that is attached to an embedding hole formed in an appliance mounting surface C1 of a ceiling C by a frame 2 and a lamp body that is swingable with respect to the main body 3. 4. The main body 3 includes a support 31 that supports the lamp body 4 so as to freely swing, a cone 32 that supports the support 31 so as to be movable in a direction along the fixture mounting surface C1, and the support 31 and the cone 32. And an attachment spring 33 for attachment to the frame 2. These are arranged from the top in the order of the support 31, the attachment spring 33, and the cone 32, are integrally fixed, and are fitted into the embedding holes. Below, each component of the embedded type lighting fixture 1 is demonstrated in detail.

  The support 31 includes a substrate 311 having a circular outer shape, a shielding wall 312 provided at a part of the periphery of the upper surface of the substrate 311 and perpendicular to the substrate 311 along the periphery, and similarly, the upper surface of the substrate 311. And a bearing portion 313 through which a shaft that pivotally supports the lamp body 4 is swingably inserted. The shielding wall 312 is formed so that its height increases as it moves away from the bearing portion 313 along the periphery of the substrate 311, and the height of the shielding wall 312 is one end portion of the substrate 311 where the bearing portion 313 is present. It is the highest near the end on the opposite side. Further, the bearing 313 is provided with a stopper 313a for restricting the range of the swing angle of the lamp body 4. The substrate 311 has an opening 311a through which light emitted from the upper lamp body 4 passes, and a long hole 311b into which a screw 51 for fixing the support 31 to the cone 32 is inserted. The bearing portion 313 is provided in the vicinity of one end of the opening 311a. The number of the long holes 311b is two, for example, and the sizes thereof are substantially equal, and the two long holes 311b are provided in parallel. The axis of the swing shaft is substantially orthogonal to the longitudinal direction of the long hole 311b. In addition, the shape of the support body 31 is not limited to the above.

  The cone 32 is formed of a cylindrical member having a through hole through which light emitted from the lamp body 4 passes. The size of the outer shape of the cone 32 is substantially equal to that of the support 31 in plan view. The above-mentioned through-hole is expanded in a stepwise manner downward. Here, the upper opening of the through hole is referred to as a light projecting opening 32a. The position of the light projection opening 32a corresponds to the opening 311a of the support 31, and the light projection opening 32a overlaps the opening 311a in plan view. Further, the opening area of the light projection opening 32 a is smaller than that of the opening 311 a of the support 31.

  Furthermore, the cone 32 has a screw hole 32b into which the screw 51 inserted into the long hole 311b of the support 31 is inserted on the upper surface, and a hook provided at the lowermost part of the outer peripheral surface over the entire circumference. Part 321. The outer diameter of the flange portion 321 is larger than the outer diameter of the portion other than the flange portion 321 of the cone 32 and the outer diameter of the support 31. Further, the upper surface of the cone 32 is a plane orthogonal to the outer peripheral surface, and is substantially parallel to the instrument mounting surface C1 when mounted on the ceiling C. The shape of the cone 32 is not limited to the above.

  The attachment spring 33 is made of, for example, a metal plate-like member, and has an upper bottom portion 33a formed in accordance with the shape of the upper surface of the cone 32 and an arc shape in a plan view. And a drooping portion 33b that is orthogonal and shaped according to the side shape of the cone 32. The upper bottom portion 33a is formed so as not to block the light projection opening 32a of the cone 32, and a screw hole 33c is provided at a portion corresponding to the screw hole 32b of the cone 32 of the upper bottom portion 33a. Furthermore, the attachment spring 33 is continuous with the hanging portion 33b and is formed according to the side surface shape of the cone 32, and has a latching portion 33d on which the frame body 2 is latched at the upper end portion. The upper end portion of the latching portion 33d is bent and provided on the upper side, and a tapered surface for facilitating attachment to the frame body 2, and similarly provided on the lower side to make it difficult to come off from the frame body 2. And a tapered surface.

  The support 31, the mounting spring 33 and the cone 32 are fixed by a screw 51 to form the main body 3 integrally. At the time of these fixings, the screw 51 is inserted into the elongated hole 311b of the support 31 and the screw hole 33c of the mounting spring 33 from above, and is screwed into the screw hole 32b of the cone 32. When the screw 51 is inserted into the elongated hole 311 b of the support 31, the coil spring 52 and then the washer 53 are passed through the screw 51. This washer 53 is, for example, a plain washer. Thus, since the support 31 is fixed by the screw 51 via the coil spring 52, the support 31 is moved in the direction along the upper surface of the cone 32 with respect to the cone 32 by the elastic force of the coil spring 52. Is possible, and rattling during movement can be suppressed.

  The moving direction of the support 31 is a direction along the instrument mounting surface C1 because the upper surface of the cone 32 is substantially parallel to the instrument mounting surface C1. During the movement, the support 31 moves in the longitudinal direction of the long hole 311b. When the support 31 does not move in the direction along the instrument mounting surface C1, the opening 311a of the support 31 is located at a position corresponding to the light projection opening 32a of the cone 32 and overlaps in plan view. The ease of movement of the support 31 can be set by adjusting the tightening torque of the screw 51 or the screwing condition of the screw 51 with respect to the screw hole 32b. Note that a spring washer may be passed through the screw 51 instead of the coil spring 52 or the coil spring 52 and the flat washer.

  The frame body 2 is made of, for example, a cylindrical member, and has a through-hole into which the cone 32 and the attachment spring 33 of the main body portion 3 are inserted, and a flange body 211 along the outer periphery at the lowermost portion of the outer peripheral surface. And a plate-like attachment spring 22 on the side surface. For example, two attachment springs 22 are attached to each of the opposing portions of the side surface of the frame body 21, for example, one each. The outer diameter of the part other than the flange 211 of the frame body 21 is substantially equal to the diameter of the embedded hole provided in the appliance mounting surface C1 of the ceiling C, and the frame 2 is fitted into the embedded hole from below. At the time of fitting, the flange portion 211 abuts on the instrument mounting surface C1 and regulates the state of the frame body 2 entering the ceiling. The attachment spring 22 is stretched against the side surface of the embedding hole of the ceiling C by elastic force, and fixes the frame body 21 to the ceiling. The frame body 2 can rotate in a direction parallel to the ceiling C.

  The height of the frame 2 is substantially equal to the height between the flange portion 321 of the cone 32 and the upper end portion of the latching portion 33 d of the attachment spring 33 in a state where the attachment spring 33 is attached to the cone 32. Therefore, when the cone 32 and the attachment spring 33 are attached to the frame body 2, the frame body 2 can be sandwiched between the flange portion 321 of the cone 32 and the upper end portion of the latching portion 33 d of the attachment spring 33. By sandwiching the frame body 2, the cone 32 and the attachment spring 33 fix themselves to the frame body 2. In this way, the lamp body 4 and the main body 3 including the support body 31, the attachment spring 33, and the cone 32 are held by the frame body 2. Since the support body 31 that supports the lamp body 4 is fixed to the cone 32, when the cone 32 is attached to the frame body 2 fixed to the ceiling C, the lamp body 4 and the support body 31 are attached to the ceiling C. It will be stored in the back.

  The lamp body 4 has an upper outer shape, for example, a substantially truncated cone shape, and a lower outer shape, for example, a substantially cylindrical shape. The lamp body 4 has a light irradiation opening 4a on the lower surface, and holds a light source 6 such as a lamp and the light source 6 inside. The socket 7 for carrying out is mounted. A plurality of ventilation openings 4b are provided on the upper surface and side surfaces of the lamp body 4 to release heat generated by the light source 6. The light emitted from the light source 6 is emitted from the light irradiation opening 4 a (light irradiation port) of the lamp body 4. The position of the light irradiation opening 4 a corresponds to the opening 311 a of the support 31 and the light projecting opening 32 a of the cone 32. When the support 31 does not move in the direction along the instrument mounting surface C1, that is, when the lamp 4 supported by the support 31 does not move in the direction along the instrument mounting surface C1, the light irradiation opening 4a is In plan view, it overlaps with the opening 311a of the support 31 and the projection opening 32a of the cone 32, and the axis of the lamp body 4 substantially coincides with the axis of the projection opening 32a of the cone 32 (shown by a one-dot broken line). . The light source 6 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.

  A bearing portion 41 is provided in the vicinity of one end portion of the periphery of the light irradiation opening 4 a of the lamp body 4. A screw 81 is inserted into the bearing portion 41, and the screw is further inserted into the bearing portion 313 of the support 31. A nut 82 is tightened at the tip of the screw 81 inserted through these bearing portions 41 and 313. At this time, the bearing portion 41 of the lamp body 4 and the bearing portion 313 of the support body 31 are fixed so that the lamp body 4 can swing by adjusting the tightening torque of the screw 81 and the nut 82. With the above-described configuration, the lamp body 4 is pivotally supported by the screw 81 (swing shaft) inserted through the bearing portion 313 of the support body 31, and can swing freely with respect to the support body 31 using the screw 81 as a swing shaft. Provided. Therefore, the light irradiation direction can be changed by changing the swing angle of the lamp body 4. This swing angle can be arbitrarily set. However, in order to limit the range of the swing angle of the lamp body 4, a stopper 41 a that contacts the stopper 313 a of the bearing section 313 of the support body 31 is provided in the bearing section 41 of the lamp body 4. As described above, the screw 81 serving as the swing shaft of the lamp body 4 is movable in the direction along the instrument mounting surface C1 so that the support 31 can move in the direction along the instrument mounting surface C1 along with the movement of the support 31. Moving. The screw 81 may be inserted through the bearing portion 313 of the support 31 and the bearing portion 41 of the lamp body 4 in the reverse order.

  The screw 81, which is the swing shaft of the lamp body 4, is provided in the vicinity of one end of the periphery of the light irradiation opening 4a of the lamp body 4, and the lamp body 4 is moved in a direction along the fixture mounting surface C1. In the state where the axial center of the lamp body 4 substantially coincides with the axial center of the light projection opening 32 a of the cone 32, the lamp body 4 is positioned in the vicinity of one end of the light projection opening 32 a of the cone 32. For this reason, the axis of the screw 81, which is the swing shaft, does not overlap the light irradiation opening 4a of the lamp body 4 and the light projection opening 32a of the cone 32, so that the number of swing shafts can be reduced to one. The number of bearing parts including the bearing parts 313 of 31 and the bearing parts 41 of the lamp body 4 can also be made one. As a result, the support body 31 and the lamp body 4 can be reduced in size, and the entire embedded luminaire 1 can be reduced in size. Furthermore, since the lamp body 4 does not come into contact with the main body 3 of the support 31 or the cone 32 and the swing angle is not narrowed, the swing angle can be secured in a wide range. For this reason, a wide light irradiation range can be secured.

  On the other hand, when the axis of the swing shaft straddles the light projection opening 32a of the cone 32 in plan view, two swing shafts and a bearing portion are provided in the vicinity of the light irradiation opening 4a of the lamp body 4. It is necessary to provide two bearing portions on the support 31 as well. Thus, the embedded luminaire can be large. Further, for example, when the swing shaft is arranged in the vicinity of the light irradiation opening 4a of the lamp body 4 and the axis is located at the center of the light projection opening 32a of the cone 32 in plan view, the neck of the lamp body 4 The lamp body 4 may come into contact with the support body 31 and the cone 32 at the time of swinging, and a wide swing angle cannot be obtained. For this reason, it is necessary to install the lamp body 4 at a high position, and there is a possibility that the embedded lighting fixture becomes large. The embedded lighting device 1 according to the present embodiment solves these problems as described above.

  Next, a state when the lamp body 4 in the embedded lighting device 1 is moved will be described. 4 (a), 4 (b), and 5 show the embedded lighting apparatus 1 when the lamp body 4 is moved and set to swing. As described above, the support 31 is fixed to the cone 32 via the mounting spring 33 so as to be movable along the fixture mounting surface C1 of the ceiling C. The support 31 has a screw 81 attached to the swing shaft. Since the lamp body 4 is supported in a freely swingable manner, the lamp body 4 can be moved along the fixture mounting surface C1 of the ceiling C, and the swing angle of the lamp body 4 can be set.

  The support 31 is formed so that the opening area of the opening 311a is larger than that of the light projecting opening 32a of the cone 32 so as not to block light emitted from the light source 6 of the lamp body 4 during movement. ing. The moving direction of the support 31, that is, the moving direction of the lamp 4 is the longitudinal direction of the long hole 311 b of the support 31, and the swinging axis of the lamp 4 is orthogonal to the longitudinal direction. It swings or tilts in the longitudinal direction of the long hole 311b and in a direction perpendicular to the instrument mounting surface C1. If the moving width of the lamp body 4 is too large, a gap is opened between the periphery of the light projecting opening 32a of the cone 32 and the support body 31, and the building structure behind the ceiling C can be seen from below. Therefore, for example, the moving width is set so that the length of the long hole 311b of the support 31 is approximately 9 mm.

  The lamp body 4 is moved after the embedded lighting fixture 1 is mounted on the ceiling, for example, when a person puts a finger into the light projection opening 32a of the cone 32 to place the support 31 or the lamp body 4 on the fixture mounting surface. This is done by pushing along C1. The swing angle of the lamp body 4 is set, for example, after the embedded lighting device 1 is attached to the ceiling, for example, when a person puts a finger into the projection opening 32a of the cone 32 and the lamp body 4 This is done by pushing in the swing direction. When the lamp body 4 is swung, a gap with the support body 31 is opened. However, since the support 31 has the shielding wall 312, light leakage to the back of the ceiling C can be prevented, and further, the structure can be hidden so that the building structure behind the ceiling C cannot be seen from below. .

  As described above, since the lamp body 4 and the screw 81 that pivotally supports the lamp body 4 can be moved in the direction along the fixture mounting surface C1, the optical axis of the light source 6 of the lamp body 4 (shown by a broken line). ) Can be set so that the swing angle of the lamp body 4 does not overlap the cone 32 of the main body 3. For this reason, the light irradiation range can be set wide. Furthermore, since the light irradiation range can be set wide with the aperture diameter of the light projection opening 32a of the cone 32 being constant, the cone 32 can be reduced in size, and thus the embedded lighting device 1 can be reduced in size. it can.

  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 luminaire 1 may be attached to a wall instead of the ceiling C. Further, the light irradiation port of the lamp body 4 is not limited to the light irradiation opening 4 a, and may be a light emission port of the light source 6 housed in the lamp body 4 or an opening of a reflection plate surrounding the light source 6. Absent. Further, what is passed through the screw 51 may be, for example, a leaf spring instead of the coil spring 52 or the coil spring 52 and the washer 53.

1 is an exploded perspective view of an embedded lighting fixture according to an embodiment of the present invention. The disassembled perspective view of the main-body part of the said lighting fixture. (A) is a perspective view of the said lighting fixture when the lamp body of the said lighting fixture is not moving, (b) is sectional drawing which shows the structure and use condition of the lighting fixture. (A) is a perspective view of the said lighting fixture when the lamp body of the said lighting fixture moves, (b) is sectional drawing which shows the structure and use condition of the lighting fixture. The cutting perspective view of the lighting fixture of the state shown by Fig.4 (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Implantable lighting fixture 2 Lamp body 3 Main-body part 31 Support body 311b Slot 313 Bearing part 32 Cone 32a Light emission opening 33 Mounting spring 4 Light body 4a Light irradiation opening (light irradiation opening)
41 Bearing 6 Light source 81 Screw (swing axis)
C1 Instrument mounting surface

Claims (2)

A body portion that is attached to an embedding hole formed on the device attachment surface;
A lamp body provided so as to freely swing with respect to the main body, and in an embedded lighting fixture in which the light irradiation direction is variable,
The lamp is supported by a swing shaft that is movable in a direction along the fixture mounting surface with respect to the main body.   The swing shaft is provided in the vicinity of one end of the light irradiation port periphery of the lamp body, and the axial center of the lamp body and the axial center of the light projecting opening of the main body section substantially coincide with each other. The embedded lighting device according to claim 1, wherein the lighting device is located near one end of the light projection opening.

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