JPH05182502A - Luminaire - Google Patents

Abstract

PURPOSE:To provide a luminaire in which devices can be miniaturized without deteriorating the reflection characteristic of a reflector even if the radius of curvature of the reflector is increased. CONSTITUTION:A non-reflecting surface 17 having the same diameter as the maximum diameter portion of a reflecting surface 16 is formed in a front reflector 11 in such a manner that it roughly continues from the maximum diameter portion of the reflecting surface 16. Since the interval between a high pressure gas discharge lamp HID and a front face glass body 19 can be maintained without enlarging the opening 14 of the front reflector 11, the glass body 19 is not adversely affected by heating of the high pressure gas discharge lamp HID. Illuminating light from the high pressure gas discharge lamp HID and reflected light from the reflecting surfaces 16, 30 are not reflected at the non- reflecting surface 17, so the illumination characteristics of the luminaire are not changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention has a rated lamp power of 1.8.
The present invention relates to a lighting fixture using a single tube high pressure discharge lamp of kW or more.

[0002]

2. Description of the Related Art Conventionally, for example, a lighting fixture using a short arc type single tube high pressure discharge lamp, the temperature of the single tube high pressure discharge lamp rises. A predetermined distance or more is provided between the transparent body such as glass formed on the front surface of the body. That is, it is possible to prevent the efficiency and life of the single tube high pressure discharge lamp from being shortened due to the temperature rise of the reflector, the translucent body and the internal atmosphere.

[0003]

However, when the distance between the single-tube high-pressure discharge lamp and the translucent body is separated by a predetermined value or more, the larger the radius of curvature of the reflector is, the larger the diameter of the translucent body is. There are problems in that the size of the device itself is increased and the cost is increased.

SUMMARY OF THE INVENTION 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 which can reduce the size of a device without deteriorating the reflection characteristics of the reflector even if the radius of curvature of the reflector is increased. To aim.

[0005]

A luminaire according to claim 1 is provided with a single tube high pressure discharge lamp having a rated lamp power of 1.8 kW or more, and a reflector containing the single tube high pressure discharge lamp. The body has an opening formed on the front surface, a light-transmitting body attached to the opening, and a reflecting surface formed of a curved surface formed at the rear of the light-transmitting body.
A non-reflective surface which is formed continuously from this anti-slope and is provided substantially perpendicular to the translucent body.

According to a second aspect of the present invention, in the luminaire according to the first aspect, the non-reflective surface is black.

According to a third aspect of the present invention, there is provided the luminaire according to the first or second aspect, wherein the reflecting surface and the non-reflecting surface are separable.

[0008]

In the luminaire according to the first aspect of the present invention, the reflector containing the single-tube high-pressure discharge lamp is perpendicular to the light-transmitting body attached to the opening formed in the front surface, and in front of the reflecting surface having the curved surface. Since the non-reflective surface is continuously provided substantially perpendicular to the light-transmitting body from the reflector, the single tube high-pressure discharge lamp and the light-transmitting body are not changed without changing the irradiation characteristics of anti-light reflected by the reflecting surface. Since the distance can be maintained and the diameter of the opening of the reflector can be reduced, the size can be reduced.

According to a second aspect of the luminaire, in the luminaire of the first aspect, the reflectance can be easily lowered by making the non-reflective surface black.

According to a third aspect of the present invention, there is provided a lighting fixture according to the first or second aspect, wherein the reflecting surface and the non-reflecting surface are separable from each other, so that when a low power single tube high pressure discharge lamp is used. , Can be miniaturized.

[0011]

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.

In FIG. 1 and FIG. 2, reference numeral 10 denotes a luminaire main body, which is composed of a front reflector 11 and a rear reflector 12 located at the rear of the front reflector 11. There is.

The front reflector 11 is a cylindrical body such as an aluminum die cast or aluminum (Al) plate having openings 14 and 15 formed at the front and rear ends thereof, such as a diaphragm. Optical bowl-shaped reflecting surface with curvature on the rear side
16 is formed, and on the front side of the reflecting surface 16, a non-reflecting surface 17 is formed in a substantially cylindrical shape whose inner surface is painted black and the maximum diameter portion of the reflecting surface 16 is extended as it is. There is. Further, in the opening 15 on the front side, a front glass body 19 is fitted to a maximum diameter portion 18 formed on the front reflection plate 12, and an opening edge 20 of the maximum diameter portion 18 is sandwiched with the front glass body 19 interposed therebetween. Is bent, and the front glass body 19 as a translucent body is fixed.
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.

In addition, a pair of supporting portions 21 are formed at two positions on the rear portion of the front reflector 11 so as to project therefrom, and a rear reflector attaching portion 22 for attaching the rear reflector 12 is formed on the supporting portion 21. A fixture attachment portion 23 for attaching the lighting fixture body 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 casting aluminum die casting, metal mold, sand mold, graphite mold, etc., and a curved reflecting surface 30 is formed on the inner surface thereof. A curved surface is formed so as to be flush with the reflecting surface 16 of the front reflector 12. In addition, a pair of box-shaped connection boxes 31 are bulged at two locations on the rear reflector 12. Inside the connection box 31, as shown in FIG.
Is formed on the front side of the partition wall 32.
33 are formed, and four leg portions 34 each having a screw hole (not shown) are formed in front of the lamp mounting chamber 33 along the longitudinal direction, and four leg portions 34 are formed to bulge. As shown in FIG. The lamp support plate 36 is attached to the lamp support screw 35 with the spacer 37 attached to the lamp support plate 36, and the short arc type single tube high pressure discharge lamp HID is attached. At times, glass bulbs at both ends of the electrodes are held so that the electrodes are substantially horizontal. The high-pressure discharge lamp HID has, for example, an electrode distance of 30 mm to 35 mm, a rated lamp power of 2 kw, a rated lamp voltage of 120 V, and a rated current of 19 A.

Further, the high pressure discharge lamp HID has lead wires 38 attached to both ends as shown in FIG.
A ring-shaped terminal 39 is attached to the tip of 38.
Then, it is led out to a terminal mounting chamber 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 mounting chamber 42, a mounting portion 44 having a mounting hole 43 is bulged. Further, a terminal plate 45 or a terminal plate 46 shown in FIG. 8 or 9 is mounted on the mounting portion 44 of the terminal mounting chamber 42, and the lead wire 38 of the high pressure discharge lamp HID and the power source are mounted on these terminal plates 45 and 46. 47 and the like are connected by a screw 48. Further, a lid 51 is openably and closably attached to the terminal mounting chamber 42 by a hinge body (not shown), and a circular insertion hole 52 is formed in a side surface of the terminal mounting chamber 42.

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, a rear reflector for the front reflector 11
As shown in FIG. 2, the rear reflector 12 has a mounting structure of 12.
An annular positioning protrusion 54 for positioning the front reflector 11 is formed on the peripheral edge of the rear reflector 12, and one hinge portion 55 of the rear reflector 12 is integrally molded, and is formed on the front reflector 11. Not connected to the hinge part so that it can rotate freely.

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

Then, the front reflector 11 and the rear reflector 12
, And turn on the single tube high pressure discharge lamp HID,
By the reflecting surfaces 16 and 30 of the front reflector 11 and the rear reflector 12, the irradiation light is reflected toward the front glass body 19 and is projected forward through the front glass body 19. At this time, since the non-reflective surface 17 does not reflect, the reflection characteristics do not deteriorate significantly.

According to the above-described embodiment, since the front reflector 11 has the non-reflecting surface 17 formed substantially linearly from the maximum diameter portion of the reflecting surface 16 and having the same diameter as the maximum diameter portion, Part reflector
High pressure discharge lamp HID without increasing the opening 14 of 11
Since the space between the front glass body 19 can be maintained, the high-pressure discharge lamp HID is not adversely affected by heat generation. In the above embodiment, the high pressure discharge lamp HI
The distance between D and the front glass body 19 is 240 mm, the diameter of the front glass body 19 is 491 mm, and the outer diameter including aluminum is 500 mm.

On the non-reflective surface 17, the high pressure discharge lamp HI
Since the irradiation light and the reflection light from the D and the reflecting surfaces 16 and 30 are not reflected, the irradiation characteristics are not changed.

Further, the reflecting surface 16 and the non-reflecting surface 17 may be formed so as to be separable, and by making them separable, for example, a low-power lamp is attached, and when there is no influence of heat, non-reflection The size can be reduced by not attaching the surface.

[0024]

According to the lighting apparatus of the first aspect, the reflector including the single-tube high-pressure discharge lamp is formed of a curved surface perpendicular to the light-transmitting body attached to the opening formed in the front surface. Since a non-reflective surface is provided in front of the reflective surface and is substantially perpendicular to the translucent body, the single-tube high-pressure discharge lamp and transmissive lamp can be used without changing the irradiation characteristics of the anti-light reflected by the reflective surface. Since the distance between the optical bodies can be maintained and the diameter of the opening of the reflector can be reduced, the size can be reduced.

According to the lighting equipment of the second aspect, in addition to the lighting equipment of the first aspect, the reflectance can be easily lowered by making the non-reflective surface black.

According to the lighting equipment of the third aspect, in addition to the lighting equipment of the first or second aspect, the reflecting surface and the non-reflecting surface are separable, so that a single output high pressure single discharge lamp of a small output is used. When it does, it can be miniaturized.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a lighting fixture of the present invention.

FIG. 2 is a side view showing the same lighting fixture.

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.

[Explanation of symbols]

 11 Front reflector 12 Rear reflector 14 Opening 16,30 Reflective surface 17 Non-reflective surface 19 Front glass body as a transparent body HID single tube high pressure discharge lamp

Claims (3)

[Claims] 1. A single-tube high-pressure discharge lamp having a rated lamp power of 1.8 kW or more, and a reflector including the single-tube high-pressure discharge lamp, wherein the reflector has an opening formed in a front surface thereof. A light-transmitting body attached to the opening, a reflecting surface formed of a curved surface formed at a rear portion of the light-transmitting body, and a light-transmitting body formed continuously from the anti-slope surface and substantially perpendicular to the light-transmitting body. And a non-reflecting surface provided on the lighting fixture. 2. The luminaire according to claim 1, wherein the non-reflective surface is black. 3. The luminaire according to claim 1, wherein the reflective surface and the non-reflective surface are separable from each other.