JP2010102891A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate adjustment of light distribution even in a light source that reaches high temperature such as an HID lamp. <P>SOLUTION: The luminaire includes: a high-pressure discharge lamp 10 as a light source; an equipment body 20 fixed to a mounting object portion while holding the light source; a mirror reflector 25 reflecting emitting light of the light source; and a movement retention means which includes a spring 32 that is an urging means for urging the mirror reflector 25, and retains the mirror reflector 25 within the equipment body 20 so as to be movable to positions in urging direction and anti-urging directions of the urging means. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting fixture in which a light source is provided on the back side of a reflecting mirror such as a downlight, and relates to a lighting fixture having a configuration in which a holding position of the reflecting mirror is variable.

  In a downlight or the like, when a lighting fixture is embedded in a ceiling or the like, it is necessary to change the light distribution in consideration of the distance from the ceiling to the illumination position. In addition, when the power (wattage) of a lamp or the like used in the lighting fixture is changed and the light irradiation range is changed, it is necessary to change the light distribution.

Conventionally, in consideration of the above circumstances, there has been provided a lighting fixture that can change the light distribution by moving the lamp portion including the socket in the fixture body to change the positional relationship with the reflecting mirror. (See Patent Documents 1 and 2).
JP 2002-124120 A Japanese National Patent Publication No. 11-501148

  However, in the lighting fixture having a mechanism for moving the lamp portion as described above, there is an adjustment mechanism at a position recessed from the opening of the fixture main body when changing the light distribution after construction, and adjustment is extremely difficult. There are many cases. Further, when adjustment is performed while looking at the light distribution state, the light source is turned on. However, adjustment is possible when the light source is at a relatively low temperature such as a fluorescent lamp. Adjustment is impossible when using a light source that has a high temperature such as (High Intensity Discharged Lamp).

  Furthermore, in the state where it is embedded in the ceiling, etc., it is necessary to increase the socket wiring length by moving the lamp part, and the lamp part can protrude to the ceiling side, which increases the size of the instrument. In some cases, it is not possible to use a lighting fixture having a structure for moving the lamp portion within the fixture body.

  The present invention has been made as a solution to the problems of the above-described conventional lighting fixtures having a variable light distribution structure, and the object thereof is to relatively easily adjust the light distribution, and particularly to an HID lamp. By providing a lighting fixture that can adjust the light distribution in the lighting state even when using a light source that becomes high temperature, and that can adjust the light distribution without changing the size of the fixture. is there.

  The luminaire according to the present invention includes a light source; an instrument main body that holds the light source and is fixed to an attachment site; a reflecting mirror that reflects light emitted from the light source; and a biasing unit that biases the reflecting mirror. And a moving holding means for holding the reflecting mirror movably in the direction of the urging force of the urging means and the direction against the urging force in the instrument main body.

  As a light source, an HID lamp, a fluorescent lamp, a halogen lamp, and an LED are allowed. The attached site is usually a ceiling, but may be a wall or a floor.

  In the lighting fixture according to the present invention, the movement holding means includes a locking plate provided with a locking groove provided with a plurality of locking positions along the biasing direction of the biasing means; It is locked at a plurality of locking positions, and in the locked state, it has a moving body in the groove for fixing the position of the reflecting mirror.

  A spring can be used as the biasing means. The biasing means for biasing the reflecting mirror has a configuration for biasing the reflecting mirror directly or indirectly. The biasing direction is not particularly limited, but is basically based on the direction in which the reflected light of the reflecting mirror is output.

  In the lighting apparatus according to the present invention, the locking plate is provided connected to the reflecting mirror and the groove moving body is provided in the apparatus main body, or the groove moving body is provided connected to the reflecting mirror, and A locking plate is provided on the instrument body.

  In the lighting fixture according to the present invention, the locking groove is a stepped groove, and when the reflecting mirror is moved in a direction against the urging force of the urging means, the moving body in the groove comes out of the locking position. In addition, it is configured in such a shape that it can move to another locking position by rotating the reflecting mirror with the opening surface of the reflecting mirror as a rotation surface in the state where it is pulled out from the locking position. Features.

  In the lighting apparatus according to the present invention, an opening is formed in the apparatus main body, the light source is housed in a position inside the apparatus main body facing the opening, and the reflector is opened from the opening of the apparatus main body. It is formed to be movable in a direction toward the inside of the instrument body.

  According to the lighting fixture of the present invention, the reflecting mirror is movably held in the fixture main body by the movement holding means, so that the size of the fixture is changed by moving the reflecting mirror in the fixture main body and changing the positional relationship with the light source. The light distribution can be easily varied without changing the height. In this case, the portion of the reflecting mirror that is particularly far from the light source is cooler than the light source, and the light distribution can be adjusted in a lit state even when a light source that has a high temperature such as an HID lamp is used.

  According to the lighting apparatus of the present invention, the locking plate is provided with the locking groove provided with a plurality of locking positions along the biasing direction of the biasing means for biasing the reflecting mirror. The movable body in the groove can be moved in the locking groove, and can be locked at a plurality of locking positions. In the locked state, the position of the reflecting mirror can be fixed. The desired light distribution state can be realized by fixing the position of the reflecting mirror at the desired locking position.

  According to the lighting apparatus of the present invention, the locking plate is provided connected to the reflecting mirror, and the groove moving body is provided in the apparatus main body, or the groove moving body is provided connected to the reflecting mirror. In addition, since the locking plate is provided on the instrument body, in any case, the moving body in the groove can be moved in the locking groove, and the position of the reflecting mirror is fixed at a desired locking position. Thus, a desired light distribution state can be realized.

  According to the lighting fixture of the present invention, the locking groove is a stepped groove, and when the reflecting mirror is moved in a direction against the urging force of the urging means, the moving body in the groove is locked. It is configured in such a shape that it can come out from the locking position, and in a state where it has come out from the locking position, it is configured in such a shape that it can move to another locking position by rotating the reflecting mirror with the opening surface of the reflecting mirror as the rotation surface. Therefore, the reflecting mirror can be moved away from the locking position by moving the reflecting mirror in a direction against the urging force of the urging means. The position of the reflecting mirror can be fixed at a desired locking position among the plurality of locking positions to realize a desired light distribution state.

  In the lighting apparatus according to the present invention, an opening is formed in the apparatus main body, the light source is housed in a position inside the apparatus main body facing the opening, and the reflector is opened from the opening of the apparatus main body. Since it is formed so as to be movable in the direction toward the inner side of the instrument body, the reflecting mirror can be moved in the direction toward the inner side of the instrument body from the opening of the instrument body to achieve a desired light distribution state.

  Embodiments of a lighting fixture according to the present invention will be described below with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 shows a partially broken perspective view of a lighting apparatus according to the first embodiment, and FIG. 2 shows a vertical sectional view. The lamp of this lighting fixture employs a high-pressure discharge lamp 10, and is constructed by covering the discharge vessel 11 with a first outer tube 12 and further covering the first outer tube 12 with a second outer tube 13.

  A discharge medium is sealed in the discharge vessel 11, and the discharge vessel 11 is held in the first outer tube 12 by a holding mechanism (not shown). Further, the first outer tube 12 is held on the inner surface of the second outer tube 13 by the elastic drag of the holding mechanism 14. A conductor connected to the electrode in the discharge vessel 11 protrudes from the tip portion of the small diameter cylindrical portions 15a and 15b extending from the spherical portion of the discharge vessel 11 in different directions on a straight line, A pair of lead wires (not shown) connected to the conductor is sealed by the second outer tube 13 and led out to the base 16 side. One of the pair of lead wires is connected to the shell portion of the base 16, and the other lead wire (not shown) connected to the conductor is connected to the center contact of the base 16.

  The base 16 is coupled to a socket 21 provided at the upper center portion of the instrument body 20. The socket 21 is supplied with power from a lighting circuit (not shown). A socket support base 22 having a heat radiating plate 22b in which several slits 22a are formed is provided on the upper side of the instrument body 20 and around the socket 21.

  The instrument main body 20 is provided with an outermost cover 23 whose upper part has a truncated cone shape on the outermost shell. The outermost cover 23 is coupled to the outer wall of the base portion 22c of the socket support base 22. The bottom portion of the base portion 22c has a bowl-shaped ceiling portion 24a having a central portion penetrated by the second outer tube 13. An inner cover 24 is coupled.

  The tip side from the center of the high-pressure discharge lamp 10 is provided so as to protrude inside the hemispherical reflecting mirror 25. The inner wall surface of the reflecting mirror 25 has a curved surface and is configured such that a large number of thin strip-shaped reflecting surfaces created so as to become narrower in the vertical direction are adjacent to each other. A sleeve portion 25 a formed so as to be slightly spaced from the second outer tube 13 of the high-pressure discharge lamp 10 is formed on the upper part of the reflecting mirror 25. An urging plate 26 having a flat plate surface 26a is fitted to the sleeve portion 25a.

  The opening edge of the reflecting mirror 25 is fitted to a reflecting mirror decorative frame 27 having a front edge 27a whose tip is bent in an L shape. Therefore, the reflecting mirror 25, the urging plate 26, and the reflecting mirror decorative frame 27 are integrally coupled. The reflecting mirror decorative frame 27 has a cylindrical side plate portion 27b, and a locking groove 28 is formed in the cylindrical side plate portion 27b. The locking groove 28 has a stepped shape, the upper side has a shape changed into a linear stepped shape, and the lower side has three U-shaped locking positions 28a to 28c.

  Between the urging plate 26 and the inner cover 24, two screws 31 are provided at symmetrical positions of the urging plate 26 so as to penetrate the urging plate 26. The screws 31 are screw holes of the urging plate 26. Are screwed together. A spring 32 as an urging means is interposed between the upper portion of the screw 31 from the inner cover 24 and the screw head. A sliding hole 33 is formed in the ceiling portion 24 a through which the screw 31 passes through the inner shell cover 24. The sliding hole 33 has a curved shape along a locus drawn by the screw 31 screwed into the screw hole of the biasing plate 26 when the biasing plate 26 rotates in a plane.

  As described above, since the spring 32 is interposed between the upper portion of the screw 31 from the inner cover 24 and the screw head, the spring 32 urges the urging plate 26 upward. Since the reflecting mirror 25, the urging plate 26, and the reflecting mirror decorative frame 27 are integrally coupled, the reflecting mirror 25 is pulled upward by the urging of the spring 32.

  On the inner side of the inner cover 24, a small cylindrical projecting piece 34 that constitutes the in-groove moving body projects from a position corresponding to the locking groove 28. The small cylindrical protruding piece 34 enters the locking groove 28 and is movable in the locking groove 28. The small cylindrical protrusions 34 and the locking grooves 28 are also formed at symmetrical positions in the diameter direction of the reflector frame 27.

  A generally cylindrical instrument decorative frame 41 is fitted to the lowermost edge of the outermost cover 23. A stopper portion 42 that is bent outward in an L shape is formed on the opening side edge of the appliance decorative frame 41, and comes into contact with the opening peripheral edge of the hole 51 formed in the ceiling plate 50, so that the appliance body 20 positioning is performed. The fixture decorative frame 41 is provided with a fixture 43, and the fixture main body 20 can be fixed by protruding the fixture 43 on the back surface of the ceiling board 50.

  The opening diameter of the appliance decorative frame 41 is sufficiently longer than the opening diameter of the inner cover 24 and the opening diameters of the reflecting mirror 25 and the reflecting mirror decorative frame 27, and the reflecting mirror 25 and the reflecting mirror decorative frame 27 are the appliance decorative frame 41. It can move up and down. In other words, an opening is formed in the instrument body 20, the high-pressure discharge lamp 10 constituting the light source is housed in a position inside the instrument body 20 facing the opening, and the reflecting mirror 25 is the instrument body. It is formed so as to be movable in the direction from the opening of 20 toward the inside of the instrument body 20.

  In the above, the locking plate constituted by the reflector frame 27 provided with a locking groove provided with a plurality of locking positions along the biasing direction of the biasing means (here, the spring 32), and the locking The in-groove moving body constituted by the small cylindrical projecting piece 34 that moves in the groove and is locked at a plurality of locking positions and fixes the position of the reflecting mirror in the locked state is a movement holding means. Constitute.

  In the lighting fixture configured as described above, when performing light distribution adjustment, the reflector decorative frame 27 is pulled downward with a hand on the front edge portion 27a of the reflector decorative frame 27. Then, the reflecting mirror 25 moves downward together with the reflecting mirror decorative frame 27, and the locking groove 28 also moves downward as a whole. As a result, the small cylindrical projecting piece 34 that has been locked at any one of the lower locking positions 28 a to 28 c in the locking groove 28 moves from the center of the locking groove 28 to the upper part.

  In the above state, the hand attached to the front edge portion 27a of the reflector frame 27 rotates the reflector frame 27 to the left or right, so that the small cylindrical projecting piece 34 is engaged with the locking groove 28. Move to any one of the upper positions at the locking positions 28a to 28c. When the hand attached to the front edge portion 27a of the reflector frame 27 is released, the reflector 25 is raised together with the reflector frame 27 by the biasing force of the spring 32, and the small cylindrical protrusion 34 is located above the locking groove 28. Are locked and fixed at any of the locking positions 28a to 28c. As a result, the reflecting mirror 25 moves in the vertical direction in the fixture body 20, the relative position with respect to the high-pressure discharge lamp 10 is changed, and a new light distribution state appears.

  In the above configuration, the locking groove 28 is formed in the reflecting mirror decorative frame 27 and the small cylindrical protrusion 34 is provided in the inner cover 24. On the contrary, the reflecting mirror decorative frame 27 or the reflecting mirror is provided. A similar light distribution adjusting mechanism can also be realized by providing a small cylindrical protrusion 34 on the back surface of 25 and forming a locking groove 28 in the inner cover 24.

  FIG. 3 shows a partially broken perspective view of a lighting apparatus according to the second embodiment, and FIG. 4 shows a vertical sectional view. The lighting fixture according to the second embodiment has substantially the same configuration as that of the lighting fixture according to the first embodiment, and the mounting position of the spring 32 as the biasing means and the shape of the locking groove 28 are different. .

  That is, the spring 32 as the biasing means is disposed outside the screw 31 and between the biasing plate 26 and the flat ceiling portion 24 a of the inner cover 24. Thus, since the spring 32 is interposed between the flat ceiling portion 24a of the inner cover 24 of the screw 31 and the biasing plate 26, the spring 32 pulls the biasing plate 26 downward. Energize as follows. Since the reflecting mirror 25, the biasing plate 26, and the reflecting mirror decorative frame 27 are integrally coupled, the reflecting mirror 25 is pressed downward by the biasing of the spring 32.

  The locking groove 28 has the same configuration as that of the first embodiment in that it has a stepped shape, but the groove shape is formed upside down. That is, the lower side of the groove has a shape changed into a linear staircase, and the upper side is provided with three inverted U-shaped locking positions 28a to 28c.

  Except for the above configuration, in the lighting fixture having the same configuration as that of the first embodiment, when performing light distribution adjustment, a hand is attached to the front edge portion 27a of the reflector frame 27 and the reflector frame 27 is attached. Push up. Then, the reflecting mirror 25 moves upward together with the reflecting mirror decorative frame 27, and the locking groove 28 also moves upward as a whole. As a result, the small tubular projecting piece 34 that has been locked in one of the upper locking positions 28 a to 28 c in the locking groove 28 moves from the center of the locking groove 28 to the lower part.

  In the above state, the hand attached to the front edge portion 27a of the reflector frame 27 rotates the reflector frame 27 to the left or right, so that the small cylindrical projecting piece 34 is engaged with the locking groove 28. Move to any lower side at the locking positions 28a to 28c. When the hand attached to the front edge 27a of the reflector frame 27 is released, the reflector 25 is lowered together with the reflector frame 27 by the biasing force of the spring 32, and the small cylindrical protrusion 34 is located above the locking groove 28. Are locked and fixed at any of the locking positions 28a to 28c. As a result, the reflecting mirror 25 moves in the vertical direction in the fixture body 20, the relative position with respect to the high-pressure discharge lamp 10 is changed, and a new light distribution state appears.

  Also in the configuration of the second embodiment, the locking groove 28 is formed in the reflecting mirror decorative frame 27 and the small cylindrical protrusion 34 is provided in the inner cover 24. On the contrary, the reflecting mirror makeup is provided. A similar light distribution adjusting mechanism can also be realized by providing a small cylindrical protrusion 34 on the back surface of the frame 27 or the reflecting mirror 25 and forming a locking groove 28 in the inner cover 24.

The partially broken perspective view of the lighting fixture which concerns on 1st Example of this invention. The vertical sectional view of the lighting fixture which concerns on the 1st Example of this invention. The partially broken perspective view of the lighting fixture which concerns on the 2nd Example of this invention. The vertical sectional view of the lighting fixture which concerns on the 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 High pressure discharge lamp 20 Instrument main body 23 Outermost cover 24 Inner cover 25 Reflective mirror 26 Energizing plate 27 Reflector decorative frame 28 Locking groove 31 Screw 32 Spring

Claims (5)

With a light source;
An instrument body that holds the light source and is secured to the attachment site;
A reflecting mirror for reflecting the light emitted from the light source;
A biasing means for biasing the reflecting mirror, and a movable holding means for holding the reflecting mirror movably in a biasing force direction of the biasing means and a position against the biasing force in the instrument body. Lighting equipment characterized by The moving holding means is
A locking plate comprising a locking groove provided with a plurality of locking positions along the biasing direction of the biasing means;
The movable body in a groove | channel which moves the inside of a latching groove, is latched in the several latching position, and fixes the position of a reflective mirror in the latching state, It comprises. lighting equipment. Whether the locking plate is connected to the reflecting mirror and the groove moving body is provided on the instrument body,
Alternatively, the lighting device according to claim 2, wherein the groove moving body is provided to be connected to the reflecting mirror, and the locking plate is provided to the device main body. The locking groove is a stepped groove, and is configured to have a shape such that when the reflecting mirror is moved in a direction against the urging force of the urging means, the moving body in the groove comes out of the locking position. 4. In a state where the mirror is pulled out from the locking position, the reflecting mirror is configured to have a shape that can be moved to another locking position by rotating the reflecting mirror with the opening surface of the reflecting mirror as a rotation surface. The lighting fixture of any one of. An opening is formed in the instrument body, and the light source is stored at a position inside the instrument body facing the opening, and the reflecting mirror is formed so as to be movable from the opening of the instrument body toward the inside of the instrument body. The lighting fixture according to any one of claims 1 to 4, wherein the lighting fixture is provided.

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