JP5225739B2 - lighting equipment - Google Patents

Description

  The present invention relates to a luminaire, for example, to an improvement of a luminaire in which a reflecting mirror is fixed to a lamp body by an attachment spring formed in a substantially C shape.

  As shown in FIGS. 5 to 7, conventionally, a light source 2, a reflecting mirror 3 that reflects light emitted from the light source 2, and a lamp body 4 on which the reflecting mirror 3 is mounted and fixed are provided. A lighting fixture 1 is known. The lamp body 4 is formed into a substantially cylindrical saddle shape by, for example, aluminum die casting, and the reflecting mirror 3 is fixed inside. The reflecting mirror 3 has a reflecting surface 3a formed in an approximate paraboloid, and reflects light emitted from the light source 2 arranged at the focal position of the approximate paraboloid as an approximate parallel line.

  The lamp body 4 has a stepped portion 5 for positioning the reflecting mirror 3 in contact with the back surface of the flange 3b of the reflecting mirror 3, and the inner surface of the lamp body 4 has a surface of the flange 3b. A circumferential groove 6 is formed adjacent to the side. The reflecting mirror 3 is fixed to the lamp body 4 by bringing the flange portion 3b into contact with the stepped portion 5 of the lamp body 4 and fitting a substantially C-shaped attachment spring 7 into the circumferential groove 6 by a spring force. The The attachment spring 7 formed in a substantially C shape is formed with three protrusions 8 that are bent in a substantially U shape and project inward in the radial direction at substantially equal intervals in the circumferential direction. The reflecting mirror 3 is fixed to the lamp body 4 with the collar part 3 b sandwiched between the step part 5 of the lamp body 4 and the projection 8 of the mounting spring 7 that fits in the circumferential groove 6.

Moreover, as a similar lighting fixture, there is a ceiling-embedded lighting fixture in which a fluorescent lamp is housed in the fixture body and embedded in the ceiling (for example, see Patent Document 1).
JP-A-9-115328

  By the way, in the conventional lighting fixture 1 shown in FIGS. 5 to 7, the projection 8 of the mounting spring 7 protrudes into the reflecting surface 3 a of the reflecting mirror 3, so that the reflected light from the reflecting surface 3 a is inhibited. There is a disadvantage that the shadow of the projection 8 is generated on the irradiated surface, or the illuminance on the irradiated surface is lowered.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a lighting fixture including an attachment spring that can easily attach and fix a reflecting mirror to a lamp body without reducing illuminance. It is to provide.

The above object of the present invention is achieved by the following constitution.
A lighting fixture comprising a light source, a reflecting mirror that reflects light from the light source, and a lamp body to which the reflecting mirror is attached,
The lamp body has a stepped portion that abuts on a flange provided at the front end of the reflecting mirror, and is provided adjacent to the stepped portion and opens radially outward , and dissipates heat from the light source to the outside. An opening to be
Provided with a plurality of mounting springs that are formed in a substantially C shape by bending outwardly projecting protrusions at a plurality of positions spaced apart in the circumferential direction,
The attachment spring includes a knob for pressing the C-shaped diameter in a direction for compressing the C-shaped diameter, and a tip of the knob is directed to a direction in which a finger is applied;
The reflector is attached to the lamp body by bringing the flange portion of the reflector into contact with the stepped portion and causing the protrusion to protrude from the opening by a spring force to attach the attachment spring to the lamp body. It is fixed.

In the lighting fixture configured as described above, the protrusion of the mounting spring that contacts the collar and fixes the reflecting mirror to the lamp body is formed to protrude outward in the radial direction. It is not located in the reflective surface. Therefore, the reflecting mirror can be fixed without blocking the optical path of the light reflected by the reflecting surface. As a result, generation of shadows by the protrusions and reduction in illuminance can be prevented, and good light irradiation can be performed. Further, the attachment spring can be easily formed by bending the spring wire, and the manufacturing cost can be reduced. In the lighting fixture configured as described above, since the tip of the attachment spring is directed in the direction in which the finger is applied, when fixing the reflector to the lamp body, the attachment spring is held by holding the knob. When the diameter is pressed in the direction of shrinking, the finger does not become painful and excellent operability is obtained.

  According to the present invention, since the protrusion of the mounting spring that contacts the collar of the reflector and is fixed to the lamp body is formed to protrude outward in the radial direction, the protrusion is within the reflection surface of the reflector. Never be located in. Therefore, the reflecting mirror can be fixed without the projections blocking the optical path of the light reflected by the reflecting surface. As a result, generation of shadows by the protrusions and reduction in illuminance can be prevented, and good light irradiation can be performed. Further, the attachment spring can be easily formed by bending the spring wire, and the manufacturing cost can be reduced.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. 1 is an exploded perspective view of a lighting fixture according to the present invention, FIG. 2 is a perspective view of the lighting fixture as seen from obliquely below, FIG. 3 is a perspective sectional view of the lighting fixture cut along a plane passing through the center line, and FIG. 3 is an enlarged view of a portion surrounded by a circle A in FIG.

  As shown in FIG. 1, a lighting fixture 10 of the present invention includes a light source 12, a reflecting mirror 13 that reflects light emitted from the light source 12, a lamp body 14 in which the reflecting mirror 13 is mounted and fixed, And an attachment spring 15.

 The light source 12 is an incandescent bulb, a halogen lamp, a metal halide lamp, a bulb-type fluorescent lamp, or a high-intensity LED lamp. The light source 12 is supplied with electric power from a power supply circuit (not shown) through a socket 16 to emit light. Is irradiated radially. In this embodiment, a halogen lamp is employed.

  The reflecting mirror 13 reflects the light irradiated radially from the light source (halogen lamp) 12 and irradiates it toward the irradiation surface, and is formed by depositing a metal film on a glass substrate or a metal substrate. Illustrated. The reflecting surface 13a of the reflecting mirror 13 of the present embodiment is formed in a parabolic shape whose cross section is a parabola. Further, the reflecting mirror 13 is provided with a flange 13b at the front end.

  The center of the halogen lamp 12 that is a light source is arranged at the focal position of the reflecting surface 13a formed in a parabolic shape. Accordingly, the reflecting mirror 13 irradiates the light irradiated radially from the halogen lamp 12 as reflected light substantially parallel to the optical axis of the light source 12. The reflecting mirror 13 is inserted into the lamp body 14 and is fixed to the lamp body 14 with the flange 13b sandwiched by the mounting spring 15 inserted from the front side.

  The lamp body 14 is formed by, for example, aluminum die casting or the like, and has a substantially disc-shaped ceiling portion 17 to which a socket 16 to which the halogen lamp 12 is attached is fixed, and a substantially hollow cylindrical hood formed at the tip. It is comprised from the part 18, and the connection part 19 which connects the ceiling part 17 and the food | hood part 18. As shown in FIG. A plurality of windows 25 for radiating heat from the halogen lamp 12 are formed in the connecting portion 19. A step portion 20 is provided on the inner peripheral surface of the connecting portion between the connecting portion 19 and the hood portion 18 by cutting or the like. The inner diameter of the stepped portion 20 is slightly larger than the outer diameter of the flange portion 13 b of the reflecting mirror 13.

  The attachment spring 15 is, for example, a spring wire material such as a piano wire formed in a substantially C shape, and a plurality of (2 in FIG. 1) formed by bending in a substantially square shape so as to protrude outward in the radial direction. Pieces of protrusions 21 are formed at substantially equal intervals in the circumferential direction. Further, both ends of the attachment spring 15 are provided with a knob portion 22 that is bent at a right angle in the axial direction and further bent in a substantially V shape in the circumferential direction. The tip of the knob 22 is directed in the direction where the finger is applied.

  Such assembling of the luminaire 10 is performed by inserting the reflecting mirror 13 into the lamp body 14 and bringing the collar portion 13b into contact with the stepped portion 20, and then holding the pair of knob portions 22 of the mounting spring 15. Then, while pressing the C-shaped diameter against the spring force, it is brought into contact with the collar portion 13b and the knob portion 22 is opened. The protrusion 21 of the mounting spring 15 protrudes from the window 25 which is an opening by a spring force and is locked to the lamp body 14.

  As a result, the flange portion 13 b is held between the step portion 20 and the attachment spring 15, and the reflecting mirror 13 is fixed to the lamp body 14. At this time, since the protrusion 21 of the mounting spring 15 protrudes outward in the radial direction, the protrusion 21 is not positioned within the reflection surface 13 a of the reflecting mirror 13. Therefore, the projection 21 is not obstructed by the reflected light from the reflecting mirror 13, and the generation of a shadow and a decrease in illuminance by the projection 21 are prevented.

  Further, since the tip of the knob portion 22 of the attachment spring 15 is directed in the direction in which the finger is applied, when attaching the reflecting mirror 13, the pair of knob portions 22 are picked and the C-shaped diameter is resisted against the spring force. Even if it is pressed in the direction of contracting, it is suppressed that the finger becomes painful, and the reflector 13 can be easily attached.

  In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

  In addition, the material, shape, size, form, number, etc. of the light source, reflector, lamp body, lighting fixture, collar, step, opening, protrusion, mounting spring, knob, etc., exemplified in the above-described embodiment , Arrangement location etc. are arbitrary as long as the present invention can be achieved, and is not limited.

The exploded perspective view of the lighting fixture which concerns on this invention Perspective view of lighting equipment looking up from diagonally below Perspective cross-sectional view of the luminaire cut along the plane passing through the center line Enlarged view of the part surrounded by circle A in FIG. Exploded perspective view of a conventional lighting fixture FIG. 5 is a perspective sectional view cut along a plane passing through the center line of the conventional lighting apparatus shown in FIG. FIG. 5 is a plan view of the mounting spring of the conventional lighting apparatus shown in FIG.

Explanation of symbols

10 Lighting equipment 12 Halogen lamp (light source)
13 reflector 13b collar 14 lamp body 15 mounting spring 20 step part 21 protrusion 22 knob 25 window (opening)

Claims (1)

A lighting fixture comprising a light source, a reflecting mirror that reflects light from the light source, and a lamp body to which the reflecting mirror is attached,
The lamp body has a stepped portion that abuts on a flange provided at the front end of the reflecting mirror, and is provided adjacent to the stepped portion and opens radially outward , and dissipates heat from the light source to the outside. An opening to be
Provided with a plurality of mounting springs that are formed in a substantially C shape by bending outwardly projecting protrusions at a plurality of positions spaced apart in the circumferential direction,
The attachment spring includes a knob for pressing the C-shaped diameter in a direction for compressing the C-shaped diameter, and a tip of the knob is directed to a direction in which a finger is applied;
The reflector is attached to the lamp body by bringing the flange portion of the reflector into contact with the stepped portion and causing the protrusion to protrude from the opening by a spring force to attach the attachment spring to the lamp body. A lighting apparatus characterized by being fixed.

Images