floodlight

Abstract

We provide a long-range, linear light floodlight to illuminate evacuation sites during nighttime disasters such as earthquakes and tsunamis. [Solution] In a floodlight comprising a xenon lamp light source 7, a glass reflector 6 at the bottom, a power supply unit 3 on the base, a cooling fan 5, a cooling air exhaust port, a cylindrical outer case 1, and an upper glass cover 9, the xenon lamp light source can move up and down, the glass reflector at the bottom is a concave mirror centered on the light source, all the light from the light source enters the upper glass cover, and the upper part of the glass cover has multiple concentric cylindrical aluminum reflectors with different diameters opening at the top and bottom, making it a parallel light directing floodlight.

Description

Technical Field

[0001] This invention relates to a projector.

Background Art

[0002] Projection lighting is lighting that uses a projector to brightly illuminate buildings, statues, fountains, monuments, etc., making the target object stand out. Projectors are used for lighting up buildings and monuments, lighting at night construction sites, event venues, sports stadiums, parking lots and security lighting, lighting for signs and advertisements, and emergency lighting during disasters.

[0003] According to the actual situation diagram of the Ansei Nankai Earthquake Tsunami (around 4 am on November 5, 1854) that hit Hiro village, Wakayama Prefecture, "Fire in the Rice Fields" - the great deeds of Goring Hamaguchi - (written by Shoemon Yoshida, Ansei Record, stored in Yogenji Temple), a large tsunami about 5 meters high crossed the wave-breaking stone wall built in the early 15th century and hit the village, invading the paddy fields behind. In particular, it is depicted that the tsunami is violently invading along the Koe River and Hiro River that flow through the north and south of the village.

[0004] Goring Hamaguchi set fire to the rice fields in the paddy fields and led the villagers who were lagging behind in the darkness to the precincts of the Hirohachiman Shrine on the high platform. Hamaguchi also made great efforts in the relief and restoration of the disaster victims. In preparation for the tsunami that would come again a hundred years later, he invested a huge amount of his personal fortune to build a dike about 5 meters high and about 600 meters long on the coast and planted pine trees on the sea side. By hiring villagers for this large-scale project that lasted for about four years, Hamaguchi prevented the dispersal of the village that had been devastated by the tsunami (Non-Patent Document 1). 92 years after the Ansei Nankai Earthquake, at around 4:20 a.m. before dawn on December 21, 1946, the Showa Nankai Earthquake occurred, and about 30 minutes later, a massive tsunami 4-5 meters high struck Hiromura. The Hiromura embankment, built by Hamaguchi Goryo and others in preparation for the next tsunami, protected most of the village's residential area from the tsunami. Its effectiveness is evident when compared to the Ansei Nankai Earthquake, in which the entire village was flooded and suffered great damage, with 36 deaths. However, the tsunami, blocked by the embankment and concentrating its energy to the southwest, entered along the Egami River and its tributary, the Ogawa River, striking the junior high school, the textile factory and its company housing (many of which were occupied by people from outside the prefecture) built on the outside (southwest) side of the embankment, and then flowing into the rice fields behind the village, sweeping away people who were unable to escape. Many of the 22 people who died in Hiromura at that time perished in this area.

[0005] Prior art has been invented for a floodlight in which the tip is closed with a front glass, the base has an opening, and the internal space widens from the base towards the tip, and the floodlight is closed by connecting the tip of the light source tube to the base of the lampshade and opened by disconnecting the connection, the first and second reflectors are polygonal pyramidal tubes and can be reduced in size to be inserted into the inside of the lampshade through the base opening of the lampshade, and the reflectors are returned to their original shape and placed in predetermined positions inside the lampshade, and a method for attaching reflectors to a floodlight has been invented (Patent Document 1). In this invention, it is difficult to direct all the light from the light source towards the tip glass portion.

[0006] A reflective projector for generating directional light rays is composed of two parts: the upper part has a rotating ellipsoidal portion and an opening for two elliptical concave mirrors, and the lower part has another concave mirror and two light sources. Light emitted from the light sources is reflected by the elliptical concave mirrors in the upper part, focused by the other concave mirror in the lower part, and emitted from the opening in the upper part. In this invention, it is difficult to manufacture the elliptical concave mirror and other concave mirrors.

[0007] A linear light projector has been invented, comprising a cylindrical body, a light source, a lens with a curved surface that emits incident light rays as parallel rays, and a barrier member installed in a ring shape inside the cylinder to attenuate scattered light (Patent Document 3). [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Patent No. 5592243 [Patent Document 2] Patent No. 4954288 [Patent Document 3] Japanese Patent Publication No. 2001-183606 [Non-patent literature]

[0009] [Non-Patent Document 1] Ministry of Land, Infrastructure, Transport and Tourism, Japan Meteorological Agency website, "Inamura no Hi" (The Fire of Inamura) [Overview of the project] [Problems that the invention aims to solve]

[0010] For floodlights used to signal evacuation locations during nighttime disasters such as earthquakes and tsunamis, long-range, linear-beam floodlights are required.

[0011] Prior art has been invented for a floodlight in which a lampshade is provided, in which the tip is closed with a front glass and has an opening at the base, and the internal space widens inward from the base to the tip, and the tip of the light source tube is closed by connecting it to the base of the lampshade and opened by disconnecting the connection, the first and second reflectors are in the shape of polygonal pyramidal tubes and can be reduced in size to be inserted into the inside of the lampshade through the base opening of the lampshade, and the reflectors are returned to their original shape and placed in predetermined positions inside the lampshade. In this invention, it is difficult to direct all the light from the light source towards the tip glass portion.

[0012] A reflective projector for generating directional light is composed of two parts: the upper part has a rotating ellipsoid and an opening for two elliptical concave mirrors, and the lower part has another concave mirror and two light sources. Light emitted from the light sources is reflected by the elliptical concave mirrors in the upper part, focused by the other concave mirror in the lower part, and emitted from the opening in the upper part. In this invention, it is difficult to manufacture the elliptical concave mirror and other concave mirrors.

[0013] A linear light projector has been invented, comprising a cylindrical body, a light source, a lens with a curved surface that emits incident light rays as parallel rays, and a barrier member installed in a ring shape inside the cylinder to attenuate scattered light.

[0014] This invention was made to solve a problem that has existed in the past. Specifically, for floodlights used to signal evacuation sites during nighttime disasters such as earthquakes and tsunamis, there is a need for floodlights that can illuminate long distances in a straight line. [Means for solving the problem]

[0015] To solve the above problems and achieve our objectives, we have devised the following parallel light direct-projection floodlights, color light direct-projection floodlights, and ON / OFF light intensity adjustable light direct-projection floodlights.

[0016] A floodlight comprising a xenon lamp light source, a glass reflector at the bottom, a power supply unit on the base, a cooling fan, a cooling air exhaust port, a cylindrical outer case, and a glass cover at the top, wherein the xenon lamp light source can move up and down, the glass reflector at the bottom is a concave mirror centered on the light source, all the light from the light source enters the glass cover at the top, and the glass cover has multiple concentric cylindrical aluminum reflectors with different diameters opening at the top and bottom, making it a parallel light streamlight. As the light source, a xenon lamp, specifically the YXL-4000A6 xenon short-arc lamp manufactured by COMEX Corporation, was used. The input power supply uses single-phase 200 volts for products used as searchlights. It is then changed to DC by a power transformer in the power supply section at the base and used. On the mountain, a generator is used. The short-distance projector may also use a 100-volt power supply. The characteristics of the xenon lamp light source are shown below. Light source output 2KW, voltage 25V, current 80A, horizontal luminous intensity (cd) 7,500, light column distance 5Km, Light source output 4KW, voltage 30V, current 120A, horizontal luminous intensity (cd) 14,000, light column distance 10Km.

[0017] Two cooling air exhaust ports are installed at the upper part of the outer cylinder of the projector, in the form of armored doors (with louver processing) to ensure air permeability and have a rainproof function. The number of cooling fans increases as the wattage of the xenon lamp increases. The xenon lamp light source can move up and down, and the lamp light source is moved up and down to adjust so that all the light rays reflected by the glass mirror at the bottom are directed towards the glass cover at the upper part. The glass cover at the upper part prevents rain from entering the main body. On the upper part of the glass cover, a plurality of concentric cylindrical aluminum reflectors with different diameters and upper and lower openings. The light rays parallel to the aluminum cylinder reflected by the glass mirror at the bottom pass through the aluminum cylinder as they are, and the light rays not parallel to the cylinder are reflected by the aluminum reflector and radiated to the opening, becoming direct light and reaching a long distance. In a 10KW projector, it can reach about 10km.

[0018] In a projector composed of a xenon lamp light source, a glass mirror at the bottom, a power supply section at the base, a cooling fan, an exhaust port for cooling air, a cylindrical outer case part, and a glass cover at the upper part, it is a color light straight-through projector equipped with a color film frame and the concentric cylindrical aluminum reflecting part on the upper part of the glass cover. The color film can be a plastic film, cellophane film, etc. The color light projector is used in event venues, etc.

[0019] In a projector comprising a xenon lamp light source, a glass reflector at the bottom, a power supply unit at the base, a cooling fan, an exhaust port for cooling air, a cylindrical outer case portion, and a glass lid at the top, a cylindrical body having an aluminum disk rotatable by a motor installed above the glass lid or on the glass lid and the color film frame, and a concentric cylindrical aluminum reflecting portion, it is an on-off light quantity adjustable light-directing projector. Inside the cylinder, the aluminum disk rotates by a motor to create an ON / OFF state of light irradiation. Also, in combination with the above-mentioned color film, an ON / OFF state of color light can be created. Further, when combined with the concentric cylindrical aluminum reflecting portion, it becomes an on-off light quantity adjustable light-directing projector. It is used for stages in event venues, etc.

Effects of the Invention

[0020] As a projector for notifying evacuation locations during nighttime disasters such as earthquakes and tsunamis, a light-directing projector that illuminates a long distance is required. The concentric cylindrical aluminum reflectors with upper and lower openings and different diameters installed above the glass lid allow light rays parallel to the aluminum cylinder reflected by the glass reflector at the bottom to pass through the aluminum cylinder as they are, and light rays not parallel to the cylinder are reflected by the aluminum reflector and radiated to the opening, minimizing attenuation due to scattered light and becoming direct light that reaches a long distance.

Brief Description of the Drawings

[0021] [Figure 1] It is a schematic side view of the projector body of the present invention. [Figure 2] It is a schematic cross-sectional view of the projector body of the present invention. [Figure 3] It is a schematic cross-sectional view of the parallel light-directing projector of the present invention. [Figure 4] It is a schematic perspective view of the parallel light-directing projector of the present invention [Figure 5] It is a schematic cross-sectional view of the color light projector of the present invention. [Figure 6] It is a schematic cross-sectional view of the ON / OFF light quantity adjustable projector of the present invention. [Modes for carrying out the invention]

[0022] Embodiments of the present invention are shown below. The present invention is not limited to the embodiments shown below. [Examples]

[0023] Figure 3 is a schematic cross-sectional view of the parallel light beam projector according to the present invention. Figure 4 is a schematic perspective view of the parallel light beam projector according to the present invention. In a floodlight comprising a xenon lamp light source (7), a glass reflector at the bottom (6), a power supply unit on the base (3), a cooling fan (5), a cooling air exhaust port (2), a cylindrical outer case (1), and an upper glass cover (9), the xenon lamp light source (7) is movable up and down, the glass reflector at the bottom (6) is a concave mirror centered on the light source, and all the light from the light source enters the upper glass cover (9), which is a concave mirror, and the upper part of the glass cover (9) is equipped with multiple concentric cylindrical aluminum reflectors (10) with upper and lower openings of different diameters, making it a parallel light directing floodlight. The cylindrical aluminum reflector (10) reduces attenuation due to scattered light, resulting in the irradiation of parallel, straight-traveling light. [Examples]

[0024] Figure 5 is a schematic cross-sectional view of the color light projector according to the present invention. A floodlight comprising a xenon lamp light source (7), a glass reflector at the bottom (6), a power supply unit on the base (3), a cooling fan (5), a cooling air exhaust port (2), a cylindrical outer case (1), and an upper glass cover (9), wherein a color film frame (11) is provided on the upper part of the glass cover (9), and further, a color light projector comprising a color film frame (11) and the concentric cylindrical aluminum reflector (10) on the upper part of the glass cover. Colored light floodlights are used at event venues and similar locations. [Examples]

[0025] Figure 6 is a schematic cross-sectional view of the ON / OFF light intensity control floodlight of the present invention. A floodlight comprising a xenon lamp light source (7), a glass reflector at the bottom (6), a power supply unit on the base (3), a cooling fan (5), a cooling air exhaust port (2), a cylindrical outer case (1), and an upper glass cover (9), wherein the floodlight is an ON / OFF light intensity adjustable floodlight equipped with a cylinder on top of the glass cover (9), or on the glass cover (9) and the color film frame (11), wherein an aluminum disc (13) rotatable by a motor (12) is installed. An aluminum disc rotates inside a cylinder using a motor (12) to create ON / OFF states for light beam irradiation. It also creates ON / OFF states for colored light beams when combined with the aforementioned color film (11). Furthermore, by combining it with the aforementioned concentric cylindrical aluminum reflector (10), it becomes an ON / OFF light intensity adjustable direct-projection light projector. It is used on stages at event venues, etc.

[0026] The above describes the designs for parallel light direct-projection floodlights, color light direct-projection floodlights, and ON / OFF light intensity adjustable light direct-projection floodlights. However, performance can be improved by making small modifications to each part. [Industrial applicability]

[0027] For floodlights that illuminate long distances, such as those used to signal evacuation locations during nighttime disasters like earthquakes and tsunamis, a straight-line floodlight can be used. Additionally, color beam floodlights and ON / OFF adjustable straight-line floodlights are effectively used at event venues. [Explanation of Symbols]

[0028] 1. Cylindrical outer casing of the floodlight 2. Cooling air exhaust port 3 Power supply section 4. Floodlight stand 5 Cooling fan 6. Concave glass mirror 7 Xenon lamp 8 Electric wire 9 Glass lid 10 Aluminum Reflectors 11 Color Film 12 motors 13 Aluminum discs

Claims

1. A light source comprising a xenon lamp light source, a glass reflector at the bottom, a power supply unit on the base, a cooling fan, a cooling air exhaust port, a cylindrical outer case, and a glass cover at the top, wherein the xenon lamp light source can move up and down, the glass reflector at the bottom is a concave mirror centered on the light source, all the light from the light source enters the glass cover at the top, and the top of the glass cover is provided with multiple concentric cylindrical aluminum reflectors with openings of different diameters at the top and bottom, making it a parallel light directing light source.

2. A floodlight comprising a xenon lamp light source, a glass reflector at the bottom, a power supply unit on the base, a cooling fan, a cooling air exhaust port, a cylindrical outer case, and a glass cover on top, characterized in that a color film frame and the concentric cylindrical aluminum reflector are provided on the upper part of the glass cover.

3. A floodlight comprising a xenon lamp light source, a glass reflector at the bottom, a power supply unit on the base, a cooling fan, a cooling air exhaust port, a cylindrical outer case, and a glass cover on top, characterized in that a cylinder with a rotatable aluminum disc installed on top of the glass cover, or on the glass cover and the color film frame, and the concentric cylindrical aluminum reflector are provided, as described in claim 1 or 2.

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