JP2008293903A - Spotlight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the assembling of a spotlight. <P>SOLUTION: The spotlight is provided with a case housing a ballast for lighting a light source, an arm 4 hung from the case, and a socket 5 attached to the arm 4 for mounting the light source. The arm 4 is a hollow cylindrical body formed by combining a frame member 4A housing a lead wire 51 led out of the socket 5, and a cover 4B blocking an opening of the frame member 4A. The arm 4 has a shaft 43. The frame member 4A and the cover 4B are jointed to each other in a combined state as the shaft 43 is inserted into a hole of the case, and the outer periphery of the shaft 43 is retained by the hole. Therefore, at assembling, if only the lead wire 51 is housed in the frame member 4a, the opening of the frame member 4A is blocked by the cover 4B, and the shaft 43 is inserted into the hole of the case with the frame member 4A and the cover 4B in a combined state, the lead wire 51 can be wired, making assembling work easy. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a spotlight installed on a ceiling surface or the like.

  Conventionally, a housing in which an inverter ballast for lighting a light source is housed, an arm fixed to the housing and suspended from the housing, and a lamp body including a light source and attached to the arm are provided. A spotlight is known (see, for example, Patent Document 1). In this spotlight, the arm is formed in a pipe shape, and a lead wire for electrically connecting the inverter ballast and the light source is inserted therethrough.

However, in the technique described in Patent Document 1, since the lead wire is inserted into the arm during product assembly, it is necessary to insert the tip of the lead wire into the opening of the arm, which takes time. Further, when the lead wire is inserted, the leading end portion of the lead wire may get caught on the side wall inside the arm, and it is difficult to smoothly insert the lead wire, which may take time for assembly.
Japanese Patent Laid-Open No. 07-211128

  The present invention has been made to solve the above-described conventional problems, and an object thereof is to provide a spotlight that can be easily assembled.

  In order to achieve the above object, a first aspect of the present invention is a housing in which a ballast for lighting a light source is accommodated, an arm suspended from the housing, and a socket attached to the arm and mounted with a light source. And the arm is a hollow cylindrical body formed by combining a frame member that accommodates a lead wire led out from the socket and a cover that closes the opening of the frame member, The frame member and the cover are joined by inserting at least one end of the combined state into a hole provided in the housing and holding the outer periphery of the end by the hole.

  The invention according to claim 2 is the spotlight according to claim 1, wherein the frame member and the cover have a socket attachment portion for attaching the socket to the other end portion in a combined state, It joins by the joining member accommodated in a socket attaching part.

  According to the first aspect of the present invention, at the time of assembly, the lead wire is accommodated in the frame member, the opening of the frame member is closed with the cover, and the end portion is used as the hole of the housing in a state where the frame member and the cover are combined. Lead wires can be wired simply by inserting them. For this reason, the wiring work of a lead wire becomes easy and an assembly becomes easy.

  According to invention of Claim 2, since a joining member is accommodated in a socket attachment part, since a joining member is not exposed, an external appearance can be made favorable.

  Hereinafter, a spotlight 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 of the spotlight 1 which concerns on this embodiment. The spotlight 1 is an illuminating device that is installed on, for example, a ceiling surface and is suspended and fixed, and irradiates an object with illumination light for product production in a commercial space or space production in an architectural space. The spotlight 1 includes a housing 3 that houses a ballast 2 that turns on a light source, an arm 4 that is suspended from the housing 3, and a socket 5 that is attached to the lower end of the arm 4 and in which a light source is mounted. A light source 6 that is mounted on the socket 5 and driven to be lit by the ballast 2, a reflecting mirror 7 that reflects the light emitted from the light source 6, and a lower end of the arm 4 that is rotatably supported and reflected. And a shade 8 to which the mirror 7 is fixed.

  The ballast 2 is composed of, for example, an inverter type ballast. The housing 3 includes a housing body 31 having an upper surface opened and a cover 32 that closes the opening. The housing body 31 accommodates the ballast 2 and the plug 9 that supplies power to the ballast 2. The plug 9 is fixed to the cover 32 so that a part of the plug 9 is exposed to enable connection with a wiring duct (not shown). A hole (not shown) into which the end of the arm 4 is fitted is formed in the approximate center of the bottom of the housing body 31.

  The arm 4 is a hollow cylindrical body and includes a horizontal portion 41 and a vertical portion 42 that extends downward from the one end of the horizontal portion 41 with the horizontal portion 41 at an angle of approximately 90 degrees. The other end of the horizontal portion 41 is provided with a substantially cylindrical shaft portion 43 extending upward. The shaft 43 is inserted into a hole in the bottom of the housing body 31 and is fixed so that the arm 4 can be rotated horizontally.

  A socket attachment portion 44 for attaching the socket 5 is formed at the lower end of the vertical portion 42. The socket mounting portion 44 has a substantially cylindrical shape, and protrudes in a direction substantially parallel to the horizontal portion 41 on the shaft portion 43 side. At the tip of the socket mounting portion 44, a part of the outer periphery is notched and a stepped portion 44a is formed. The socket mounting portion 44 encloses the socket 5 when the socket 5 is mounted. A base of the light source 6 is fixed to the socket 5. A lead wire (not shown) led out from the socket 5 is accommodated in the arm 4 and led to the ballast 2 in the housing 3. The lead wire of the socket 5 guided by the arm 4 is connected to the ballast 2 in the housing body 31.

  The light source 6 is composed of, for example, a ceramic metal halide lamp. This ceramic metal halide lamp is tall and has a substantially cylindrical shape, and its base is, for example, a screw type. The light source 6 is arranged so that its longitudinal direction is substantially parallel to the horizontal direction. The longitudinal direction of the light source 6 and the protruding direction of the socket mounting portion 44 are substantially parallel. Further, the central axis of the light source 6 in the longitudinal direction and the central axis of the socket mounting portion 44 substantially coincide with each other. The configuration and shape of the light source 6 are not limited to the above.

  The reflecting mirror 7 has a substantially truncated cone shape or a bowl shape, and its diameter is larger than the length of the bulb portion of the light source 6. The reflecting mirror 7 is provided with openings 71 and 72 on the front surface and the back surface. The front opening 71 is a light emitting opening and has a diameter larger than that of the rear opening 72. The rear opening 72 is a heat dissipation opening. The light source 6 is disposed in front of the reflecting mirror 7 so that the central axis in the longitudinal direction of the light source 6 is substantially parallel to the opening surface of the opening 71 of the reflecting mirror 7. Further, the light source 6 is disposed so that the center thereof overlaps with the focal position of the reflecting mirror 7.

  The shade 8 includes a saddle body 81 having a bowl-like shape with an open front surface and a substantially circular shape when viewed from the front, and a substantially annular front frame 82 having a size corresponding to the front opening of the shade body 81. The size of the shade body 81 corresponds to the size of the reflecting mirror 7, and the diameter of the shade body 81 is larger than the length of the bulb portion of the light source 6. A heat radiation opening 81 a is provided on the back surface of the shade body 81, and the position of the opening 81 a corresponds to the heat radiation opening 72 of the reflecting mirror 7. The front frame 82 is configured to be attachable to the shade main body 81 by being fitted into the front opening of the shade main body 81 and rotating. The reflecting mirror 7 is fitted from the front opening of the shade main body 81 and is pressed against the inside of the shade main body 81 by the fixing spring 10 to be fixed. In this way, the shade body 81 contains the reflecting mirror 7. A front frame 82 is attached to the front opening of the shade body 81 in a state where the reflecting mirror 7 is included in the shade body 81.

  A substantially cylindrical bearing portion 81b is formed through the side portion of the seed body 81 so as to penetrate therethrough. The socket mounting portion 44 of the arm 4 is fitted into the bearing portion 81b. Since the central axis of the socket mounting portion 44 substantially coincides with the central axis of the light source 6 in the longitudinal direction, the shade 8 has the socket mounting portion 44 in a state where the socket mounting portion 44 is inserted into the bearing portion 81b. It becomes an axis, and is rotatable about the central axis in the longitudinal direction of the light source 6. Accordingly, when the socket mounting portion 44 is fitted and inserted into the bearing portion 81b with the light source 6 mounted on the socket 5, the light irradiation direction can be increased or decreased simply by rotating the shade 8 without moving the light source 6. It is possible to change the direction, that is, the elevation direction.

  A protruding rotation stopper 81c for restricting the rotation range of the shade 8 is formed inside the bearing portion 81b. The rotation range of the shade 8 is restricted by the rotation stopper 81c coming into contact with the stepped portion 44a when the socket mounting portion 44 is rotated. In addition, an arcuate leaf spring member 83 formed corresponding to the outer peripheral shape of the socket mounting portion 44 is disposed in the bearing portion 81b. The leaf spring member 83 is provided on the front opening side of the shade body 81, and presses the socket mounting portion 44 inserted in the bearing portion 81 b toward the back side of the shade body 81. For this reason, it is possible to prevent the socket mounting portion 44 from falling off and to secure the axial force.

  In the above configuration, when the shade 8 rotates in the vertical direction around the socket mounting portion 44 of the arm 4, the direction of the front opening of the shade 8 changes. Further, the direction of the opening 71 of the reflecting mirror 7 fixed to the shade 8 is changed. At this time, the arm 4, the socket 5 and the light source 6 do not move. As the direction of the opening 71 of the reflecting mirror 7 changes, the light reflection direction changes. Therefore, the light irradiation direction is changed to the upward direction or the downward direction. In this way, the light irradiation direction can be changed in the vertical direction simply by rotating the shade 8 without moving the socket 5 and the light source 6. Further, when the direction of light irradiation is changed in the vertical direction, the arm 4 and the socket 5 do not move, so that it is possible to prevent a change in the shape of the lead wire led out from the socket 5 and accommodated in the arm 4. Therefore, it is possible to prevent disconnection of the lead wire.

  4A, 4B, and 5 show the detailed structure of the arm 4 portion. The arm 4 is a hollow cylindrical body formed by combining a frame member 4A that accommodates the lead wire 51 led out from the socket 5 and a cover 4B that closes the opening of the frame member 4A. The frame member 4 </ b> A and the cover 4 </ b> B constitute a horizontal portion 41, a vertical portion 42, a shaft portion 43, and a socket mounting portion 44 in a combined state. The frame member 4A is open at the top in the portion constituting the horizontal portion 41, the longitudinal section is substantially U-shaped, and the side portion is open at the portion constituting the vertical portion 42, The cross section is substantially U-shaped. Further, the frame member 4 </ b> A is formed in a substantially cylindrical shape so that the side portion thereof is open at the portion constituting the shaft portion 43 and the outer peripheral side of the socket 5 is surrounded at the portion constituting the socket mounting portion 44. The both ends are open. The opening on the socket base end side of the horizontal portion 41, the vertical portion 42, the shaft portion 43, and the socket mounting portion 44 is continuous. The cover 4B is formed so as to close this opening.

  The frame member 4 </ b> A is formed with a protruding piece 44 b on the inner side of the portion constituting the socket mounting portion 44. A hole 44c into which a screw 52 for fixing the socket 5 to the frame member 4A is screwed and a screw 45 (joining member) for fixing the frame member 4A and the cover 4B to each other pass through the protruding piece 44b. 44d is formed.

  A protruding piece 53 is formed on the side of the socket 5, and a hole 53 a is provided in the protruding piece 53. The screw 52 passes through the hole 53a and is screwed into the hole 44c of the protruding piece 44b of the frame member 4A. Thus, the socket 5 is fixed to the frame member 4A by the screw 52. At this time, the screw 52 is accommodated in the socket mounting portion 44. For this reason, since the screw 52 is not exposed, the appearance can be improved.

  The cover 4B is provided with a substantially cylindrical screw receiving portion 46 protruding toward the inside of the socket mounting portion 44 corresponding to the hole 44c. The screw 45 passes through the hole 44d of the protruding piece 44b of the protruding piece 44b and is screwed into the screw receiving portion 46 of the cover 4B. As described above, the frame member 4 </ b> A and the cover 4 </ b> B are joined by the screw 45. At this time, the screw 45 is accommodated in the socket mounting portion 44. For this reason, since the screw 45 is not exposed, the appearance can be improved.

  FIGS. 6A and 6B and FIGS. 7A to 7C show the horizontal rotation structure of the arm 4 in the spotlight 1. A substantially cylindrical or substantially annular bearing portion 31 a is provided at substantially the center of the bottom portion of the housing body 31, and a hole 31 b of the bearing portion 31 a passes through the housing body 31. The diameter of the hole 31 b is slightly larger than the outer diameter of the shaft portion 43 of the arm 4. In a state where the frame member 4A and the cover 4B constituting the arm 4 are combined, the shaft portion 43 is inserted into the hole 31b of the housing body 31 from below. The frame member 4A and the cover 4B are joined together by holding the outer periphery of the shaft portion 43 by the hole 31b. The degree of holding is such that the shaft 43 can be rotated.

  The distal end portion of the shaft portion 43 has an outer diameter that is smaller than the lower portion, leaving a part. This remaining part protrudes more than the other part on the same outer periphery, and forms the protrusion part 43a. The shaft portion 43 is fitted into the bearing portion 31 a of the housing body 31, and the tip portion of the shaft portion 43 penetrates into the housing body 31. A substantially annular rotation stopper 47 is fitted to the tip of the shaft 43 that penetrates into the housing body 31. Further, a nut or the like (not shown) is attached to the most distal portion of the shaft portion 43. The rotation stopper 47 is held on the periphery of the hole 31 b inside the casing body 31, and the nut and the like are held on the rotation stopper 47, thereby preventing the arm 4 from falling off the casing body 31. be able to.

  A protrusion 47 a that protrudes inward is formed on the inner periphery of the rotation stopper 47. The number of the protrusions 47a is, for example, one. A protrusion 47 b protruding outward is formed on the outer peripheral portion of the rotation stopper 47. The number of the protrusions 47b is, for example, two. The two protrusions 47b are disposed at an angle of approximately 180 degrees with respect to each other. A stopper 31 c having a substantially arc shape in plan view is provided on the inner side of the bottom of the housing body 31. The number is, for example, two. The stopper 31 c is formed along the outer periphery of the rotation stopper 47.

  When the shaft 43 is rotated horizontally, the protrusion 47a inside the rotation stopper 47 abuts on the protrusion 43a at the tip of the shaft 43, thereby restricting the rotation range of the shaft 43. By this restriction, for example, the pivotable angle of the shaft portion 43 is set to about 300 degrees. After the protrusion 43 a of the shaft portion 43 comes into contact with the protrusion 47 a of the rotation stopper 47, the rotation stopper 47 rotates along with the rotation of the shaft 43. When the rotation stopper 47 is rotated, the stopper 31 c inside the housing body 31 abuts the protrusion 47 b outside the rotation stopper 47, thereby restricting the rotation range of the rotation stopper 47. With this restriction, for example, the rotation angle of the rotation stopper 47 is approximately 65 degrees. Accordingly, since the total pivotable range of the shaft portion 43 is approximately 360 degrees, it is possible to irradiate light in any direction around the spotlight 1.

  In the above configuration, when the spotlight 1 is assembled, the lead wire 51 is accommodated in the frame member 4A, the opening of the frame member 4A is closed with the cover 4B, and the shaft member is combined with the frame member 4A and the cover 4B. The lead wire 51 can be wired simply by inserting 43 into the hole 31 b of the housing body 31. For this reason, as compared with the case where the lead wire is passed through the arm as in the conventional spotlight, the wiring work of the lead wire becomes simple and can be easily assembled.

  In addition, this invention is not limited to the structure of said embodiment, A various deformation | transformation is possible according to a use purpose. For example, the spotlight 1 is not limited to a ceiling surface, and may be configured to be installed on a wall surface or a floor surface.

The perspective view of the spotlight which concerns on one Embodiment of this invention. The disassembled perspective view of the said spotlight. (A) is a perspective view when a shade is removed from an arm in the spotlight, and (b) is a perspective view of the arm portion. (A) is an exploded perspective view of the said arm part, (b) is an exploded perspective view from the direction different from (a) of the said arm part. The perspective view of the frame member which comprises the said arm. (A) is the perspective view from diagonally downward when an arm is removed from a housing | casing in the said spotlight, (b) is a perspective view from the direction different from (a) of the spotlight. (A) is the front view of the said spotlight, (b) is the sectional view on the A-A 'line of (a), (c) is an enlarged view of the broken-line frame B part of (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spotlight 2 Ballast 3 Case 31b Hole 4 Arm 4A Frame member 4B Cover 44 Socket mounting part 45 Screw (joining member)
5 Socket 51 Lead wire 6 Light source 7 Reflector 8 Sede

Claims (2)

A housing that houses a ballast that turns on the light source;
An arm suspended from the housing;
In a spotlight comprising a socket attached to the arm and to which a light source is attached,
The arm is a hollow cylindrical body formed by combining a frame member that accommodates a lead wire led out from the socket and a cover that closes an opening of the frame member;
The frame member and the cover are joined by inserting at least one end of the combined state into a hole provided in the housing and holding the outer periphery of the end by the hole. And spotlight. The frame member and the cover have a socket attachment portion for attaching the socket at the other end portion in a combined state, and are joined by a joining member accommodated in the socket attachment portion. The spotlight according to claim 1.

Images