JPH05182501A - Luminaire - Google Patents

Abstract

PURPOSE:To provide a luminaire in which components can commonly be used. CONSTITUTION:A rear reflector 12, to which a single tube high pressure gas discharge lamp HID of more than 1.8kW rated lamp power is mounted, is provided with a reflector 10 comprising front reflectors 11a, 11b, 11c. The front reflector 11a with a medium radius of curvature has a reflecting surface 16a having an opening 14 formed therethrough and a front face glass body 19 is mounted thereon. For the front reflector Jib with a small radius of curvature the front face glass body 19 is mounted in the opening 14 of a reflecting surface 16a of a small radius of curvature via a large diameter portion 61. For the front reflector 11c with a large radius of curvature the front face glass body 19 is mounted in an opening 14 formed via a front side non-reflecting surface 62 in a reflecting surface 16c of a large radius of curvature. Therefore, the distance between the single tube high pressure gas discharge lamp HID and the front face glass body 19 is fixed and a component such as the front face glass body 19 can be used in common while taking into account the thermal effect of the single tube high pressure gas discharge lamp HID.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminaire in which reflectors having different radii of curvature can be used with common parts.

[0002]

2. Description of the Related Art Conventionally, for example, a lighting device using a short arc type single tube high pressure discharge lamp generates heat from the single tube high pressure discharge lamp, and therefore, a light transmitting plate such as a glass plate attached to the tip of a reflector is used. The distance from the single tube high pressure discharge lamp is more than a certain distance.

Further, in the lighting equipment, the radius of curvature of the reflector is different depending on the projection distance. That is, even though the distance between the light-transmitting plate and the single-tube high-pressure discharge lamp must be constant, the radius of curvature of the reflectors is different. I am using.

[0004]

However, since the translucent bodies of different sizes are used for the respective reflectors having different radii of curvature as described above, there is a problem that parts cannot be shared. ..

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a lighting fixture in which parts can be shared.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a single-tube high-pressure discharge lamp having a rated lamp power of 1.8 kW or more, a rear reflector to which the single-tube discharge lamp is attached, and a front reflector located in front of the rear reflector. The front reflector has an opening formed in the front surface and has a reflecting surface with a predetermined radius of curvature, and is separated from the single-tube high-pressure discharge lamp by a predetermined distance in the opening. A front reflector having a medium radius of curvature, to which a translucent body is attached, and an opening formed in the front surface, having a reflecting surface having a radius of curvature smaller than that of the medium radius of curvature reflector, are provided in the opening. A front portion with a small radius of curvature is formed in which a large-diameter portion that is larger than the opening is formed, and a translucent body that is separated from the single-tube high-pressure discharge lamp at the same distance as the reflector with the medium curvature radius is attached to the large-diameter portion. The body and an opening are formed on the front surface, It has a reflecting surface with a radius of curvature larger than that of a reflector with a radius of curvature, and a non-reflecting surface is formed in the radial direction of this reflecting surface to have a diameter substantially the same as the large-diameter portion. One of the reflector having the medium radius of curvature and the front reflector having the large radius of curvature in which the translucent body that is separated from the single-tube high-pressure discharge lamp is attached to the side is selected and used. ..

[0007]

According to the present invention, a single reflector high-pressure discharge lamp, which is a common component, is attached to the rear reflector, and a single transparent high-pressure discharge lamp and a light-transmitting plate are attached to the same transparent plate. Since the front reflector with a radius of curvature, the front reflector with a medium radius of curvature, and the front reflector with a small radius of curvature can be selected and used according to the projection distance, common parts can be used. Can be achieved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the lighting equipment of the present invention will be described below with reference to the drawings.

FIG. 2 is for a medium radius of curvature. In this FIG. 2, 10 is a reflector, which is located at the front reflector 11a for the medium radius of curvature and at the rear of this front reflector 11a. And a rear reflector 12 that does.

The front reflector 11a has openings at both ends.
The front reflector 11a is a cylindrical body such as an aluminum die cast or an aluminum (Al) plate diaphragm in which 14 and 15 are formed, and an optical bowl-shaped reflecting surface 16 having a curvature is formed on the front reflector 11a.
Further, in the opening portion 15 on the front surface side, a front glass body 19 as a translucent body is fitted to the maximum diameter portion 18 formed in the front reflector 11a, and the maximum diameter portion is sandwiched with the front glass body 19 interposed therebetween. 18 open edges
The front glass body 19 as a translucent body is fixed by bending 20. The front glass body 19 is a wind-tempered tempered glass exhibiting excellent heat shock resistance and shock resistance, which are problems when cold rain or the like hits the glass plate while the temperature of the glass plate is rising.

A pair of supporting portions 21 are formed at two positions on the rear portion of the front reflector 11a so as to project therefrom. A rear reflector attaching portion 22 for attaching the rear reflector 12 is formed on the supporting portion 21. An instrument attachment portion 23 for attaching the reflector 10 itself is formed between the support portions 21 and 21.

On the other hand, the rear reflector 12 is formed into a substantially bowl shape by aluminum die casting, casting with a sand mold, a metal mold, a graphite mold or the like, and a curved reflecting surface 30 is formed on the inner surface thereof. Form a curved surface flush with the reflecting surface 16 of the front reflector 11a. Also, 2 of the rear reflector 12
A pair of box-shaped connection boxes 31 are bulged and formed at the points. Inside the connection box 31, as shown in FIG.
A partition wall 32 is formed, a lamp mounting portion 33 is formed on the front surface side of the partition wall 32, and a leg portion in which a screw hole (not shown) is formed along the longitudinal direction in the front direction of the lamp mounting portion 33, respectively. Four 34 are bulged and formed on these legs 34.
As shown in FIG. 6, a lamp support plate 36 is attached with screws 35, and a spacer attached to the lamp support plate 36.
37, short arc type single tube high pressure discharge lamp HI
D is attached, and this single-tube high-pressure discharge lamp HID is held by glass bulbs on both ends of the single-tube high-pressure discharge lamp HID so that the electrodes are almost horizontal when attached. High pressure discharge lamp HID
Is, for example, the distance between electrodes is 30 mm to 35 mm, the rated lamp power is 2 kw, the rated lamp voltage is 120 V, and the rated current is 19 A.
Is.

Further, as shown in FIG. 7, the high pressure discharge lamp HID has lead wires 38 attached to both ends thereof, and a ring-shaped terminal 39 is attached to the tip of the lead wire 38. Then, it is led out to a terminal block housing portion 42 formed on the opposite surface via an insertion hole 41 formed in the partition wall 32. On the partition wall 32 on the side of the terminal block housing 42, a mounting portion 44 having a mounting hole 43 is formed so as to bulge. Further, a terminal plate 45 or a terminal plate 46 shown in FIG. 8 or FIG. 9 is attached to the mounting portion 44 of the terminal block housing portion 42, and these terminal plates 45 and 46 are connected to the lead wire 38 and the lead wire 38 of the high pressure discharge lamp HID. A lead wire 47 for power supply or the like is connected. Furthermore, in the terminal block storage section 42,
The lid body 51 is attached by a hinge body (not shown) so as to be openable and closable, and a circular insertion hole is formed on the side surface of the terminal block housing section 42.
52 is formed with an opening.

The rear reflector 12 has a large number of radiating fins 53, which serve as cooling portions, integrally formed on the surface thereof. The heat radiation fins 53 are arranged in parallel with each other with a certain gap therebetween.

Further, as a mounting structure of the rear reflector 12 to the front reflector 11a, as shown in FIG.
An annular positioning protrusion 54 for positioning the front reflector 11a is formed on the peripheral edge of the 12 and one hinge portion 55 of the rear reflector 12 is integrally formed and formed on the front reflector 11a. It is rotatably connected to a hinge part (not shown).

Further, a starter 56 for lighting the single-tube high-pressure discharge lamp HID is attached to the instrument mounting portion 23.

The front reflector 11a and the rear reflector 11a
When 12 is connected and the single tube high pressure discharge lamp HID is turned on, the reflecting surfaces 16 and 30 of the front reflector 11a and the rear reflector 12 are
Thereby, the irradiation light is reflected in the direction of the front glass body 19 and projected in the front direction.

Next, a small radius of curvature smaller than that of the front reflector 11a for medium radius of curvature shown in FIG. 2 will be described with reference to FIG.

In the lighting equipment shown in FIG. 10, the front reflector 11a for the medium radius of curvature shown in FIG. 2 is replaced with the front reflector 11b for the small radius of curvature. The front reflector 11b for a small radius of curvature has a reflection surface 16b of a small radius of curvature formed on the inner surface, and the high-pressure discharge lamp HID and the front glass body 19 are spaced apart from each other by a front reflector 11a of a medium curvature. In order to make the front glass body 19 common to each other, a large diameter portion 61 protruding outward from the opening 14 in a flange shape is formed, and the front glass body 19 is attached to the large diameter portion 61. Is.

Further, a large radius of curvature having a larger radius of curvature than the front reflector 11a for medium radius of curvature shown in FIG. 2 will be described with reference to FIG.

The lighting fixture shown in FIG. 11 is obtained by replacing the front reflector 11a for the medium radius of curvature shown in FIG. 2 with a front reflector 11c for the large radius of curvature. Then, in order to make the distance between the high-pressure discharge lamp HID of the front reflector 11a for the medium curvature radius and the front glass body 19 the same as that of the front reflector 11a for the middle curvature, and to make the front glass body 19 common. , The front reflector 11c for this large radius of curvature has a large radius of curvature reflecting surface 16c formed on the inner surface, and is substantially continuous from the maximum diameter portion of this reflecting surface 16c, and has the same diameter as this maximum diameter portion. The non-reflective surface section has a straight section with a black-painted non-reflective surface 62 formed on the side.
63 is formed, and the front glass body 19 is attached to the opening 14 of the non-reflection surface portion 63. And the front reflector 11
The irradiation light is reflected in the direction of the front glass body 19 by the reflection surface 16c, 30 of the rear reflector 12 and c, and is projected in the front direction through the front glass body 19, and is not reflected by the non-reflection surface 62. It does not change the irradiation characteristics.

According to the above embodiment, as shown in FIG.
Front reflector 11a with medium radius of curvature, front reflector with small radius of curvature
Both 11b and the front reflector 11c having a large radius of curvature can maintain the distance between the high-pressure discharge lamp HID and the front glass body 19 while sharing the common parts, so that heat generated by the high-pressure discharge lamp HID It will not be adversely affected.

In the above embodiment, the high pressure discharge lamp HID and the front glass body are used for the front reflector 11a having a medium radius of curvature, the front reflector 11b having a small radius of curvature, and the front reflector 11c having a large radius of curvature. The distance of 19 is 240 mm, the diameter of the front glass body 19 is 491 mm, and the outer diameter including aluminum is 500 mm.

[0024]

According to the luminaire of the present invention, the single reflector high-pressure discharge lamp and the projector have the same distance and the same reflector is mounted on the rear reflector to which the common-unit single-bulb high-pressure discharge lamp is attached. A front reflector with a large radius of curvature, a front reflector with a medium radius of curvature, and a front reflector with a small radius of curvature, to which a light plate is attached, can be selected and used according to the projection distance. Therefore, common parts can be achieved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a relationship between a front reflector having a small radius of curvature, a front reflector having a medium curvature, and a front reflector having a large curvature of an embodiment of a lighting fixture of the present invention.

FIG. 2 is a cross-sectional view showing a lighting device of a front reflector having a medium curvature, same as above.

FIG. 3 is a plan view showing the same rear reflector.

FIG. 4 is a side view showing the same rear reflector.

FIG. 5 is a cross-sectional view showing the same rear reflector.

FIG. 6 is a sectional view showing a rear reflector to which the high pressure discharge lamp of the same is attached.

FIG. 7 is a partially enlarged view showing an end portion of the same high-pressure discharge lamp.

FIG. 8 is a plan view showing one terminal of the above.

FIG. 9 is a plan view showing the other terminal of the above.

FIG. 10 is a cross-sectional view showing a lighting fixture of a front reflector having a small curvature.

FIG. 11 is a cross-sectional view showing a lighting device of a front reflector having a large curvature.

[Explanation of symbols]

 10 Reflectors 11a, 11b, 11c Front reflector 12 Rear reflector 14 Openings 16a, 16b, 16c Reflective surface 19 Front glass body as translucent body 61 Large diameter part 62 Non-reflective surface HID single tube high pressure discharge lamp

Claims (1)

[Claims] 1. A single-tube high-pressure discharge lamp having a rated lamp power of 1.8 kW or more, a rear reflector to which the single-tube discharge lamp is attached, and a front reflector positioned in front of the rear reflector. The front reflector has an opening formed on the front surface and has a reflecting surface with a predetermined radius of curvature, and a transparent body that is separated from the single-tube high-pressure discharge lamp by a predetermined distance is attached to the opening. It has a front reflector with a radius of curvature and an opening formed on the front surface and a reflecting surface with a radius of curvature smaller than that of the reflector with a medium radius of curvature, and the aperture has a diameter larger than this opening. A front portion having a small radius of curvature and a front portion having a small radius of curvature, in which a translucent body that is separated from the single-tube high-pressure discharge lamp at the same distance as the reflector having the medium radius of curvature is formed in the large-diameter portion. From a reflector with a medium radius of curvature A non-reflective surface having a radius of curvature with a large radius of curvature is formed in the radial direction of the reflective surface so as to have a diameter substantially the same as the large-diameter portion. The same lighting device as the above reflector, the single-tube high-pressure discharge lamp and a front reflector having a large radius of curvature to which a light-transmitting body that is separated from the single-tube high-pressure discharge lamp are selected and used.