JP4211506B2 - lighting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lighting fixture having a glare cut cap.
[0002]
[Prior art]
In this type of conventional lighting fixture, one end of a bar is hinged to an opening of a lamp body having a light source, a cap provided at the center of the bar is placed in front of the light source, and the other end of the bar is opened to the lamp body. There is one that is detachably attached to the part (see Patent Document).
[0003]
[Patent Literature]
JP-A-7-169301 [0004]
[Problems to be solved by the invention]
However, there is a drawback that it is not easy to attach and detach and replace the reflector and the glare cut cap.
[0005]
Accordingly, an object of the present invention is to provide a lighting fixture in which the reflector and the glare cut cap can be easily attached and detached.
[0006]
[Means for Solving the Problems]
The lighting apparatus according to claim 1, further comprising: a reflector having a flange provided at a peripheral edge of the opening, a notch formed in the collar, and a light source disposed therein; and a ring-shaped frame overlapping the collar. A glare cut cap means on the frame having a bar connected to the light source and having a cap that is held by the bar and covers the front of the light source and that aligns with the notch. And a lamp body having holding means that allows the collar and the frame to be held by rotating the collar and the frame in the circumferential direction. It is.
[0007]
According to the lighting apparatus of the first aspect, since the reflector and the glare cut cap are inserted and fixed by rotation, the reflector and the glare cut cap can be easily attached and detached.
[0008]
According to a second aspect of the present invention, there is provided the lighting apparatus according to the first aspect, wherein the holding means has a projection part through which the collar and the cutout part of the frame are inserted, and the collar and the frame are rotated in the circumferential direction. Accordingly, the protrusion is provided with a groove that engages the collar and the frame, and further includes a spring member that presses the collar and the frame against the inner surface of the groove.
[0009]
According to the lighting device of the second aspect, in addition to the same effect as the first aspect, the reflector and the glare cut cap means can be held by the holding means simply by inserting and rotating the frame. It becomes easy.
[0010]
According to a third aspect of the present invention, there is provided a lighting fixture according to the first aspect, wherein the reflector is equally divided in a circumferential direction centered on the optical axis, and is divided into a large number of radial planes perpendicular to the optical axis. The division angle of the circumferential division is gradually increased from the irradiation opening in the optical axis direction toward the optical axis side.
[0011]
According to the lighting apparatus of the third aspect, in addition to the same effect as in the first aspect, it is possible to prevent the central portion in the irradiation pattern from becoming extremely bright and to improve the uniformity. It is possible to prevent the image of the light source from appearing as unevenness in the irradiation pattern.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. That is, the lighting fixture includes a reflector 1, glare cut cap means 2, and a lamp body 3.
[0013]
The reflector 1 is provided with a collar 4 at the periphery of the opening, a notch 5 is formed in the collar 4, and a light source 6 is disposed inside. In the embodiment, it is a reflecting mirror for a spotlight, such as a bullet shape, which has a substantially paraboloid of revolution with respect to the optical axis, and has a collar 4 at the periphery perpendicular to the optical axis. On the other hand, a notch 5 is provided at a symmetrical position. The light source 6 is held by a lamp body 3 to be described later, and a light source insertion port 7 through which the light source 6 is inserted is formed at the top of the reflection plate 1.
[0014]
The glare cut cap means 2 has a ring-shaped frame 8 that overlaps with the collar 4, has a bar 9 with an end connected to the frame 8, and has a cap 10 that is held by the bar 9 and covers the front of the light source 6. In addition, a notch portion 11 that matches the notch portion 5 is formed in the frame 8. The cap 10 blocks direct light from the light source 6, and the frame 8 has substantially the same shape as the collar 4 of the reflector 1.
[0015]
The lamp body 3 has a recess 12 into which the reflector 1 is inserted, a lamp socket 13 on which the light source 6 is mounted so as to be positioned in the recess 12, and a notch in the flange 4 and the frame 8 of the reflector 1. Holding means 14 is provided which can be held by rotating the frame 4 and the frame 8 in the circumferential direction while inserting 5 and 11. The holding means 14 has a protrusion 15 through which the notch portions 5 and 11 of the collar 4 and the frame 8 are inserted, and the collar 4 and the frame 8 are engaged by rotating the collar 4 and the frame 8 in the circumferential direction. A groove 16 is provided on the protrusion 15, and a spring member 17 is provided to press the collar 4 and the frame 8 against the side surface of the groove 16. The spring member 17 is provided at the peripheral edge of the reflector 1 with a predetermined distance from the protrusion 15 in the circumferential direction of the lamp body 3. The shape of the spring member 17 is a shape in which a leaf spring is formed in a mountain shape, and both ends thereof are directed to the opening portion, and the top portion is fixed to the attachment portion 30 of the lamp body 3 by screws 31. With the frame 8 of the glare cut cap means 2 superimposed on the collar 4 of the reflector 1, the top side of the reflector 1 is inserted into the recess 12 of the lamp body 3, and the collar 4 is pressed against the spring member 17 while notching it. The parts 5 and 11 are inserted into the protrusion 15, and the collar 4 and the frame 8 are rotated in the circumferential direction so that the collar 4 and the frame 8 enter the groove 16, and the collar 4 and the frame 8 are moved between the spring member 17 and the inner surface of the groove 16. Fix in the pinched state.
[0016]
The spotlight lamp 3 according to the embodiment has a bullet-like shape, and includes the reflector 1 and the glare cut cap 5 that are recessed as described above. In front of the lamp body 3, a lens 33 that changes the light irradiation characteristic is included in a frame 20 that engages with the lamp body 1.
[0017]
The frame 20 is configured to mesh with the opening of the lamp body 3. A thumbscrew 21 and an L-shaped groove 22 are formed on the outer peripheral surface of the opening of the lamp body 3. An L-shaped slit 23 through which the neck of the thumbscrew 21 passes and a protrusion 24 (FIG. 2) that engages with the groove 22 are formed on the peripheral edge of the frame 20. When the frame 20 is engaged with the opening of the lamp body 3, the slit 23 is passed through the thumbscrew 21 and the protrusion 24 is passed through the groove 22. Next, the frame 20 is rotated so that the thumbscrew 21 is positioned at the inner end of the slit 23, the protrusion 24 is positioned at the inner end of the groove 22, and the thumbscrew 21 is tightened and fixed.
[0018]
The peripheral edge of the lens 33 is placed on the inner peripheral edge of the frame 20. A ring-shaped elastic body 34 having a U-shaped cross section using rubber, for example, is put on the periphery of the lens 33, and the elastic body 34 is pressed and fixed by a C-shaped ring-shaped spring 35. The elastic body 34 has a support body 37 formed with grooves 36 at a plurality of locations in the circumferential direction of the inner peripheral edge of the frame 20 and is elastically deformed so as to reduce the diameter by pinching the knob portions 35a at both ends of the spring 35. Are released, the diameter of the spring 35 is restored and enlarged, and the spring 35 is locked in the groove 36 to be in a fixed state.
[0019]
One end of an arm 26 is rotatably attached to both side surfaces of the lamp body 3 by a knob 40, and a main body 27 incorporating an electronic transformer is attached between the other end of the arm 26, and the lamp socket of the lamp body 3 from the main body 27. 13 is a lead wire 42 drawn out. The main body 27 is provided with a wiring duct plug 28 connected to the wiring duct 43.
[0020]
According to the first embodiment, the reflecting plate 1 and the glare cut cap means 2 can be exchanged and can be easily attached and detached without requiring a tool. Further, the optical axis can be adjusted in the rotation direction, and it is possible to cope with irregular light distribution (such as an ellipse) by replacing the reflector 1. Since the reflector 1 and the glare cut cap 10 are not bodies, the inclination of the light source 7 can be finely adjusted. Further, since the reflector 1 and the glare cut cap 10 have the same mounting structure, the structure can be simplified.
[0021]
As a modification of the first embodiment, the protrusion 15 is provided at a position inward in the axial direction from the opening 12a of the frame 3 as shown in FIG. May be extended so as to continue to the opening 12a. In this case, since all the notches 5 and 11 are inserted into all the protrusions 15, the reflecting plate 1 and the glare cut cap means 2 can be rotated for the first time. it can.
[0022]
A second embodiment of the present invention will be described with reference to FIGS. That is, in the first embodiment, the protrusion 15 is formed longer than the circumferential width of the notches 5 and 11, has no groove 16, and has a fastening screw 44 on the upper surface. The notches 5 and 11 have a head insertion portion 45 formed deeply so as to pass through the head serving as a knob, and a head locking portion 46 formed shallowly so that the head is locked. In a state where the collar 4 of the reflector 1 and the frame 8 of the glare cut cap means 2 are overlapped, the head insertion portion 45 of the notches 5 and 11 is inserted into the head of the screw 44, and the collar 4 is inserted into the upper surface of the projection 15. Then, the head locking portion 46 is squeezed below the head, and the screw 44 is tightened to fix the collar and the frame 8 to the protrusion 15.
[0023]
Others are the same as in the first embodiment.
[0024]
A third embodiment of the present invention is shown in FIG. That is, in the first embodiment or the second embodiment, the reflecting plate 1 is equally divided in the circumferential direction around the optical axis O and has multiple stages in the radial direction perpendicular to the optical axis O. The divisional angle of the circumferential division increases stepwise from the irradiation opening in the optical axis direction toward the optical axis O side.
[0025]
Explaining in detail, the inner surface of the reflector 1 is formed so as to be multi-staged in the radial direction perpendicular to the optical axis from the opening with the collar 4 to the light source insertion opening 7 along, for example, a bullet-shaped paraboloid. The reflecting surfaces of each step are further equally divided so as to form a radial shape in the circumferential direction around the optical axis O. Each of the surfaces is constituted by a polygonal flat body 50, and the division angle in the circumferential direction, that is, the number of divisions is changed stepwise from the opening to the light source insertion port 7. In the embodiment, it is divided into 16 steps in the radial direction, and in the circumferential direction, a rectangular polygonal plane body 50 is formed by dividing the opening into 12th step in the radial direction by 5 degrees pitch and 72 divisions, and the 13th and 14th steps. A pentagonal and rectangular polygonal plane 50 with a 10-degree pitch and 36 divisions, and a pentagonal and rectangular polygonal plane 50 with a 20-degree pitch and 18 divisions at the 15th and 16th stages. Further, the polygonal flat bodies 50 are linearly arranged in the radial direction.
[0026]
Thereby, it can prevent that the center part in an irradiation pattern becomes extremely bright, and a uniformity improves. Further, it is possible to prevent the image of the light source from appearing as unevenness in the irradiation pattern.
[0027]
A fourth embodiment of the present invention is shown in FIG. That is, in the third embodiment, the reflecting plate 1 is arranged by rotating each plane adjacent to the radial plane 50 in the circumferential direction by an arbitrary angle in the circumferential direction. For example, in each stage in the radial direction, The angle of 1/2 of the dividing angle is shifted in the circumferential direction. In the embodiment, the number of radial divisions is 11 steps, and the circumferential division is a polygonal flat body 50 made of pentagons and hexagons, which is divided into 48 degrees by 7.5 degrees from the opening with the collar 4 to the seventh step. The polygonal flat body 50 is composed of a pentagon and a hexagon that are divided into 15 degrees by 24 degrees from the 8th stage to the 11th stage. Furthermore, each step in the radial direction is shifted 3.75 degrees in the circumferential direction. As a result, the polygonal flat bodies 50 arranged in the radial direction are not arranged linearly.
[0028]
Thereby, in addition to the effect of 3rd Embodiment, it can prevent that the shadow of the bar 8 which supports the glare cut cap 10 appears on an irradiation surface.
[0029]
【The invention's effect】
According to the lighting apparatus of the first aspect, since the reflector and the glare cut cap are inserted and fixed by rotation, the reflector and the glare cut cap can be easily attached and detached.
[0030]
According to the lighting device of the second aspect, in addition to the same effect as the first aspect, the reflector and the glare cut cap means can be held by the holding means simply by inserting and rotating the frame. It becomes easy.
[0031]
According to the lighting apparatus of the third aspect, in addition to the same effect as in the first aspect, it is possible to prevent the central portion in the irradiation pattern from becoming extremely bright and to improve the uniformity. It is possible to prevent the image of the light source from appearing as unevenness in the irradiation pattern.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a part of a first embodiment of the present invention.
FIG. 2 is a half sectional view of the assembled state as seen from the front.
FIG. 3 is a partially broken side view.
FIG. 4 is a partial sectional side view of the whole.
FIG. 5 is an overall front view.
FIG. 6 is a front view of a reflector according to a second embodiment.
FIG. 7 is a front view of the opening of the lamp body.
FIG. 8 is a front view of a reflector according to a third embodiment.
FIG. 9 is a front view of a reflector according to a fourth embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Reflector 2 Glare cut cap means 3 Lamp body 4 Collar 5 Notch part 6 Light source 8 Frame 9 Bar 10 Cap 11 Notch part 12 Recess 14 Holding means 15 Projection part 16 Groove 17 Spring member 20 Frame 50 Polygonal plane body

Claims (3)

A reflector having a collar on the periphery of the opening and forming a notch in the collar and arranging a light source therein, and a bar having a ring-shaped frame overlapping the collar and having an end connected to the frame A glare-cut cap means having a notch portion held in the bar and covering the front of the light source and aligning with the notch portion in the frame, and a recess for inserting the reflector. And a lamp body having a holding means that allows the notch portion of the frame to be inserted and can be held by rotating the collar and the frame in the circumferential direction. The holding means has a protrusion for inserting the collar and the notch of the frame, and the protrusion engages the flange and the frame by rotating the collar and the frame in the circumferential direction. The lighting apparatus according to claim 1, further comprising a spring member that is provided in a portion and further presses the collar and the frame against an inner surface of the groove. The reflecting plate is formed of a polygonal flat body that is equally divided in the circumferential direction around the optical axis and that is divided into a large number in the radial direction perpendicular to the optical axis. The lighting fixture according to claim 1 or 2, wherein a division angle of the circumferential division is gradually increased toward the side.

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