JPH03216902A - lighting equipment - Google Patents

Abstract

PURPOSE:To suppress the height of a pole low and obtain an illumination environment with the reduced glare for players, an umpire and spectators in a sport by fitting a light source section and a light reflection section to the pole, and locating the light reflection section above the light source section. CONSTITUTION:A light projector 1 serving as a light source section A is installed at the lower section of a pole 2, and a mirror 3 having mirror reflection characteristic and constituting a light reflection section B reflecting and illuminating the light radiated from the light projector 1 to a tennis court is provided above the light projector 1. When light is radiated to the above mirror 3 from the light projector 1 at the lower section of the pole 2, the light radiated from the light projector 1 illuminates the tennis court 4 via the mirror 3 as if it is radiated from the image 1i of the light projector 1 generated at the symmetrical position to the light projector 1 with respect to the mirror 3 by the reflection law, i.e., an effect equivalent to that the light projector 1 is installed at the height Hi of the image 1i of the light projector 1 for illumination is obtained. The height of the pole 2 is suppressed low, and an illumination environment with the reduced glare for players, an umpire and spectators in a sport is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of J.A.C. 1] This invention relates to a lighting device for illuminating at night in an outdoor sports facility.

(Subject technology) Figure 3 shows, for example, the Wuling facility lighting general catalog S-C2884-A ship 8705 <DLP> published by Yokata Denki Co., Ltd.
(May 1988 edition) is a diagram showing a lighting device posted on the website. In FIG. 3, 1 is a light projector installed at the tip of a pole 2.

No. 41 No. 1 is an explanatory diagram of a Dennis court seen from the Hessline side, showing an example in which the floodlight 1 configured as described above is used for tennis court illumination. In the 41st mail,
Reference numeral 4 indicates a tennis court that is illuminated, and reference numeral 5 indicates a net for the tennis court. A pole 2 is installed along a sight line, and a tennis court 4 is illuminated from a floodlight 1 attached to the tip of the pole 2. ! 0 is a lighting device. According to the 17th Lighting of Sports Facilities in the Leidink Hunt Book edited by the Illuminating Engineers of Japan, lighting methods for tennis courts include: This figure shows how to place floodlights in outdoor sports facilities to reduce glare for referees and spectators. According to this, in the site lighting method in which poles are arranged along the side line, the mounting height H of the floodlight is determined as follows.

Match court: H≧7+o. 4a Recreation court: H≧3+0.4a However, a: Distance # from the center line to the pole.

According to the above-mentioned method for determining H, even in the case of only one tennis court, a must be approximately 11.4 m, and the mounting height H of the floodlight must be at least 12 m for matches and 8 m for recreational use.

[Problem to be solved by the invention]

Conventional lighting devices for outdoor sports facilities are configured as described above, so in order to reduce glare, the floodlight 1
The installation height of the pole 2 had to be increased, and accordingly the length of the pole 2 had to be increased. Furthermore, Paul 2
The pole must withstand the weight of the floodlight 1 attached to its tip and the wind pressure load fli&:, and the pole 2 must be made of reinforced concrete or the floodlight 1 may be attached with a steel angle. 2 had the problem of being very expensive and large-scale.

This invention was made in order to solve the above-mentioned problems, and it is possible to keep the height of the pole low and to reduce the need for large-scale construction.
Don't be a sportsperson or referee. A lighting environment that reduces glare for customers! The second objective is to provide an inexpensive lighting device that can be used in a variety of ways.

Means for Solving Problem 11] For this reason, the lighting device according to the present invention is a lighting device in which a pole is installed at the periphery of an outdoor sports facility and the sports facility is illuminated from above the pole. The above object is achieved by attaching a reflecting section to the pole and locating the light reflecting section in the direction E from the light source section.

(Sakukawa) This invention nail-related lighting device has the structure as shown in I'2.
By positioning the light reflecting section above the pole and the light source section below, the light source section reflected on the light reflecting section is optically located further L than the light reflecting section. It looks as if the light is shining from a high position. Stiffness allows the use of low poles to provide illumination with reduced glare, similar to when illuminating from a high pole.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

(Structure) FIG. 1 is an explanatory diagram showing the arrangement and operation of a lighting device according to an embodiment of the present invention.

In FIG. 1, 1 is a light source part A installed at the bottom of a pole 2, and 3 is a light source installed at the top of the floodlight 1, which reflects the light emitted from the floodlight 1 toward a tennis court 4. 11 is an image of the projector 1 produced by the mirror 3 at a position symmetrical to the projector 1 with respect to the mirror 3; Hi is the height of the image If; ! ■ is a lighting device.

(motion) The operation will be explained based on the above configuration.

In FIG. 1, a projector 1 emits light from the bottom of a pole 2 toward a mirror 3 above. The light emitted from the projector I illuminates the tennis court 4 by the mirror 3 according to the law of reflection, as if it were irradiated from the image 1i of the projector 1, which is located symmetrically with the projector 1 with respect to the mirror 3. .

In other words, it is equivalent to installing the projector 1 at a height I{i of the image 11 of the projector 1 which is much higher than the height H of the pole 2 to which the mirror 3 is attached. Therefore, glare caused by the low height of the projector 1 is eliminated. Further, since the amount of fl of the mirror 3 is generally lighter than the weight of the floodlight 1, there is no need to use the concrete pole described in the conventional lighting device, and the pole can also be made inexpensive.

Figure 2 is a side view of a lighting device showing another embodiment of the invention. The pole 2a is shown in a retracted state when the lighting device 11a is not in use. In this way, in this embodiment, the pole 2a
By adopting a telescoping structure, the lighting system becomes extremely compact when not illuminated.
It is no longer necessary to take a very large safety factor against the wind pressure load mentioned above, and the pole 2a can not only be manufactured at a low cost but also be portable.

Furthermore, if the shape of the reflector of the projector 10 is an elliptical surface with the focal point of the lamp (not shown) in the projector and the mirror 3, or a spheroid with the lamp axis as the rotation axis, #2
The light emitted from the light device 1 is condensed by the mirror 3, and the size of the mirror 3 can be reduced, thereby allowing the illumination device including the pole 2! 1 can be manufactured at a lower cost.

In the Moeki embodiment, a case has been described in which the projector 1 is used as the light source section A, but other light sources, such as a reflex type lamp in which aluminum is vapor-deposited on the inner surface of the lamp bulb, may be used. Further, although the case has been described in which an ellipsoidal surface is used as the shape of the reflector of the light source section A, other shapes such as a paraboloid of revolution may be used.

Further, in the following 12 embodiments, the case of illuminating a tennis court has been described, but it goes without saying that the present invention is not limited to kneading, and can be used as a lighting device for any outdoor sports facility.

〔Effect of the invention〕

As explained below, according to the present invention, 1 m1 of light
The light source section and the light reflecting section of the device are constructed by attaching them to a pole, and the nine reflecting sections are positioned above the 11.eta. light source section, so that sports athletes, This has the effect of creating a lighting environment with reduced glare for referees and spectators.

Furthermore, in addition to reducing the cost of the lighting device, it is also possible to shorten the distance from the center line of the installation location of the lighting device, allowing for efficient use of narrow spaces. be able to.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the arrangement and operation of a lighting device according to an embodiment of the present invention, FIG. 2 is a side view of a lighting device showing another embodiment of the invention, and FIG. 3 is a conventional lighting device. FIG. 4 is an explanatory diagram showing an example of use of a conventional lighting device. 1 is a floodlight, 2.2a is a pole, 3 is a mirror tO, 11
, lla are lighting devices, A is a light source section, and B is a light reflection section. Note that the same reference numerals in the figures indicate the same or corresponding parts. Figure 3 Figure 4 Procedural amendment (spontaneous) l, Case indication patent application No. 2-009820 2. Name of the invention Shomei device 3. Relationship with the case of the person making the amendment Patent Applicant Address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Name (601) Moriya Shiki, Representative of Mitsubishi Electric Corporation 4. Agent address: 2-2-3 Marunouchi, Chiyoda-ku, Tokyo 5. Subject of amendment (1) Detailed description of the invention in the specification. 6. Contents of the amendment (1) In lines 10 to 11 of page 5 of the specification, "a mirror constituting the light reflecting section B" is replaced with a mirror having specular reflection characteristics constituting the r light reflecting section B. Corrected to ``Yes.''

Claims (1)

[Claims] A lighting device in which a pole is installed at the periphery of an outdoor sports facility and the sports facility is illuminated from above the pole, wherein a light source section and a light reflecting section are attached to the pole, and the light reflecting section is connected to the light source. A lighting device characterized in that it is located above the section.