JP2018092710A - Metal vapor discharge lamp for balloon lighting, and balloon lighting system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal vapor discharge lamp having an outer tube mount that cannot be broken even when the lamp is used for a balloon lighting system, and a balloon lighting system using the lamp.SOLUTION: An outer tube mount of a metal vapor discharge lamp has a supporting post with a substantially U-shape. Supporting post holders are connected to the supporting post so as to close both end portions on an open side of the U-shape. The supporting post holders sandwich a shell tube of a stem and a stem neck portion so that the outer tube mount is positionally fixed to an outer tube.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a balloon illumination device used at a construction site or the like. More specifically, the present invention relates to a metal vapor discharge lamp for balloon illumination that is less likely to cause inconveniences and the like when it is housed in a balloon illumination device and transferred to various sites.

  The balloon lighting device is a lighting that is carried to a place where lighting is temporarily required, such as a construction site or an event hall, and is lit on the spot. Conventionally, a metal vapor discharge lamp that is relatively lightweight and can emit high-power light has been used as a light source of a balloon illumination device. For example, the balloon illumination device described in Patent Document 1 is equipped with a generator and a metal vapor discharge lamp attached to the upper end of a telescopic column on a carriage, and a balloon is provided around the metal vapor discharge lamp to soften the balloon illumination device. It is easy to move because all the components necessary for lighting are placed on the carriage. Patent Document 2 discloses a balloon illumination device in which air is inflated inside a frameless balloon. Patent Document 3 further discloses a balloon illumination device in which a protective frame is provided between the metal vapor discharge lamp and the balloon so that the balloon does not contact the metal vapor discharge lamp at the center even if the balloon is deformed by a strong wind.

WO 2002-095288 JP 2003-36709 A JP 2004-228053 A

  The above prior art does not describe improvement of the metal vapor discharge lamp itself. A general metal vapor discharge lamp for general lighting is used. Even general metal vapor discharge lamps for lighting use have products with specifications that have passed vibration tests and impact tests, so there are almost no problems. However, in a relatively large balloon illuminator that requires high illuminance, if a high-power metal vapor discharge lamp is installed, the arc tube support will be subjected to vibration and impact loads that are not expected for general illumination. It may be damaged and malfunctions such as non-lighting may occur. Therefore, an object of the present invention is to provide a metal vapor discharge lamp that can be used in a balloon illumination device.

  In view of the above object, a metal vapor discharge lamp according to the present invention includes a light emitting tube containing a pair of electrodes and a light emitting enclosure, and an outer tube for supporting the light emitting tube at a predetermined position in the translucent outer tube. In the metal vapor discharge lamp having a mount, the outer tube mount has a substantially U-shaped column, and a plurality of column holders are connected so as to close both ends of the open side of the substantially U-shaped column. , At least one of the plurality of column holders sandwiches the stem body tube, and at least one of the other column holders sandwiches the stem pinch portion so that the outer tube mount is positioned inside the outer tube. It is a fixed metal vapor discharge lamp.

  According to the present invention, it is possible to provide a metal vapor discharge lamp for balloon illumination that can withstand intense vibration during movement and the arc tube does not deviate from a predetermined position of the outer tube mount. Further, by adopting the metal vapor discharge lamp, it is possible to provide a balloon illumination device that can be used safely with few failures while repeatedly moving in and out for a long period of time.

FIG. 1 is a schematic view showing a balloon illumination device according to this embodiment. FIG. 2 is a front view showing the outer tube mounting structure of the metal vapor discharge lamp according to the present embodiment. FIG. 3 is a side view showing the outer tube mounting structure of the metal vapor discharge lamp according to the present embodiment.

  Hereinafter, embodiments of a balloon lighting device according to the present invention will be described in detail with reference to the accompanying drawings. In addition, in the figure, the same code | symbol is provided with respect to the same element, and the duplicate description is abbreviate | omitted. It should be noted that the present embodiment is an example for explaining the present invention and does not limit the scope of the present invention.

  FIG. 1 is a schematic view showing a balloon illumination device according to the present embodiment, but the features of the present embodiment are not visible only in this view. Reference numeral 1 denotes a light source of a balloon illumination device, which is accommodated inside the balloon and held at a predetermined height via poles (upper pole 103A and lower pole 103B). The light source 1 is a metal vapor discharge lamp. The metal vapor discharge lamp according to the present invention has mounting compatibility with the conventional metal vapor discharge lamp for general illumination, and the metal vapor discharge lamp according to the present invention can also be used in a conventionally used balloon. is there.

  The metal vapor discharge lamp is a general term for a high-pressure mercury lamp, a high-pressure sodium lamp, a metal halide lamp, and a ceramic metal halide lamp, and the present invention can be applied to any kind of metal vapor discharge lamp.

  Reference numeral 101 denotes a balloon, which is usually made of a light diffusing material. Reference numeral 102 denotes a light bulb support, which has a socket to which the light source 1 is attached. A stretchable pole is formed by combining the upper pole 103A and the lower pole 103B. When moving the balloon illuminating device of this embodiment, the entire length of the balloon illuminating device can be shortened by accommodating almost the entire upper pole 103A inside the lower pole 103B. In this embodiment, the stretchable pole has two stages, but it may be divided into three or more stages.

  The base unit 104 of the present embodiment has a pole 103B connected to one side and three support legs 104A, 104B, 104C attached to the other, and is installed on the ground to use a balloon illumination device. be able to. The base unit 104 may be mounted on a cart having wheels instead of the support legs.

  Further, a power source such as a battery or a generator (not shown) can be loaded on the same cart as the base unit.

  2 and 3 show an example of a metal vapor discharge lamp according to this embodiment. Most of the metal vapor discharge lamps are provided with a phosphor film or a diffusion film on the inner surface of the outer tube 2, and are designed to reduce glare when the light source is viewed directly by diffusing light from the arc tube. . However, in FIGS. 2 and 3, a metal vapor discharge lamp having a specification having a transparent outer tube is described in order to explain the structure inside the outer tube. In the balloon illuminating device, a light diffusive film is often used for the balloon 101 itself, and the light source often uses a metal vapor discharge lamp having a specification having a transparent outer tube.

  The present invention is particularly effective for a high watt type metal vapor discharge lamp having a relatively high rated power, and is suitable for a metal vapor discharge lamp having a rated power of 450 to 2000 W, for example. Here, an example of a metal halide lamp that is lit at a rated power of 1 kW will be described as an embodiment of a high-intensity discharge lamp according to the present invention. The metal halide lamp 1 according to the present embodiment includes an outer tube 2, a stem 4 provided so as to seal an opening end portion thereof, and a base 3 that covers the stem 4. The inside of the outer tube 2 may be evacuated or filled with an inert gas. Before exhausting the inside of the outer tube and / or filling with an inert gas, the opening end of the stem 4 is sealed through the stem exhaust port 4A. An arc tube 11 made of quartz glass is arranged inside the outer tube 2. The arc tube 11 has a central light emitting portion and pinch seal portions on both sides thereof. An inert gas, mercury, a luminescent substance, or the like is sealed in the internal space of the light emitting unit. The arc tube 11 further includes a pair of main electrodes 11A and 11B and an auxiliary electrode 11C. The tips of these electrodes are arranged in the inner space of the light emitting part of the arc tube 11. In the present embodiment, power is supplied from the stem inscribed line 4E to the main electrode 11A via the power supply line B14 and the power supply line C15, and the other main electrode 11B is supplied from the stem inscribed line 4D via the power supply line A13. Power is supplied to the auxiliary electrode 11C from the stem inscribed line 4E through the power supply line B14, the bimetal 16, the starting resistor 17, and the like. That is, the main electrodes 11A and 11B are always at different potentials when energized, and the main electrode 11A and the auxiliary electrode 11C are at the same potential.

  The pinch seal portions on both sides of the arc tube 11 are fixed to the substantially U-shaped column 6 by arc tube support members 12A and 12B, respectively. The support 6 has a support function for supporting the arc tube 11. The support 6 is provided with a neck-side support plate 8 that contacts the neck portion of the outer tube 2 and a top-side support plate 9 that contacts the top side of the outer tube 2. The arc tube is supported at a position substantially coincident with the central axis of the outer tube 2.

  A starting device is provided between the stem 4 and the arc tube 11. In this embodiment, the starting device includes a starting resistor 17 and a bimetal 16. The starting resistor 17 is connected to the auxiliary electrode 11C of the arc tube, and controls the current flowing from the main electrode 11B to the auxiliary electrode 11C. The bimetal unit cuts off the current flowing to the auxiliary electrode 11C during normal lighting.

  A heat retaining film 11D and a heat retaining film 11E are further applied to both ends of the light emitting section of the arc tube 11. These heat insulation films are used to keep the temperature of the portion where the luminescent material stays in a liquid state inside the arc tube 11 while the arc tube 11 is lit. If the metal vapor discharge lamp is designed to be lit with the base 3 down, the heat insulating film 11E on the upper side of the arc tube 11 in FIGS. 2 and 3 is unnecessary. However, in practice, a heat insulating film is provided on both sides of the arc tube 11, and in many cases, the specifications can be used regardless of whether the base 3 is up or down.

  In addition, a metal halide lamp or high-pressure sodium lamp with an internal starter that is lit by a ballast for a mercury lamp includes a starter such as a nonlinear ferroelectric ceramic capacitor (FEC), bimetal, resistor, etc. as a starter in the outer tube 2. However, the detailed description is abbreviate | omitted here. The high-intensity discharge lamp according to the present invention is not limited to whether or not a starting device is provided in the outer tube 2, and can be applied to the entire metal vapor discharge lamp.

  In the metal halide lamp 1 of the present embodiment, a trunk support post 7A is attached to the stem trunk tube 4B, and a pinch support support 7B is attached to the stem pinch part 4C. These two types of strut holders are respectively wound around the stem in such a manner that two attachments are sandwiched between two strip-shaped metal plates, and both ends are welded to the struts 6 to fix the positions.

  These strut holders are usually welded and fixed in a state where the gap is made as small as possible with respect to the glass surface of the stem to which each is attached, and with an appropriate tightening force applied, When a strong clamping force is applied to glass and a metal plate is welded, there is a greater risk of the glass breaking, so there is often a gap between the post support and the stem after fixation.

  In the conventional metal halide lamp, even if it is a high wattage lamp, the column presser is only one of the one wound around the stem trunk tube portion or the stem pinch portion. There was no metal halide lamp in the structure.

  The metal halide lamp of the present invention has several times the ability to suppress the inclination of the support column with respect to the vibration in the left and right direction (X direction and Y direction, respectively) in FIG. 2 or FIG. This is because in FIG. 2, there is an effect equivalent to that of a large column pressing member integrated from the lower end of the trunk portion column pressing member 7 </ b> A to the upper end of the pinch unit column pressing member 7 </ b> B.

  Further, in the conventional metal halide lamp having only the trunk support 7A, when the support 6 is displaced from the stem trunk 4B in the height direction (Z direction) in FIG. On the other hand, in the conventional metal halide lamp having only the pinch portion column holder 7B, when the column 6 is shifted in the Z direction, the upper and lower ends of the pinch portion column holder 7B hit the upper and lower boundaries of the stem pinch portion 4C, respectively. However, the gap between the metal plates that sandwich the pinch part in parallel tends to widen against the shaking in the X direction and the Y direction, and the swing of the column becomes large if the shaking continues for a long time or many times. . This is the same principle as inserting a flathead screwdriver between two metal plates fixed in parallel and shaking them to gradually increase the distance between the metal plates.

  In the metal halide lamp 1 according to this embodiment, the swing of the support column 6 in the Z direction is suppressed by the pinch support column holder 7B, and at the same time, the trunk support column holder 7A and the pinch support column support 7B increase the distance in the Z direction of the support column 6. Therefore, it is possible to suppress the swing of the column 6 in the XY directions.

  The above-described embodiment is merely an example of one aspect of the present invention, and can be arbitrarily modified and applied within the scope of the gist of the present invention.

1: light source (metal halide lamp), 101: balloon, 102: light bulb support,
103A: Upper pole, 103B: Lower pole, 104: Base part
104A to 104C: support legs, 2: outer tube, 3: base, 4: stem
4A: Stem exhaust port, 4B: Stem barrel, 4C: Stem pinch part,
4D-4E: stem tangent, 5: outer tube mount, 6: strut
7A: trunk pinch part column holder: pinch part column holder, 8: neck side support plate, 9: top side support plate,
11: arc tube, 11A: electrode, 11B: electrode, 11C: auxiliary electrode,
11D to 11E: heat insulating film, 12A: arc tube holder, 12B: arc tube holder,
13: Feed line A, 14: Feed line B, 15: Feed line C, 16: Bimetal,
17: Starting resistance, 18: Heat shield

Claims (4)

An arc tube containing a pair of electrodes and a luminous enclosure;
In a metal vapor discharge lamp having an outer tube mount for supporting the arc tube at a predetermined position in the translucent outer tube,
The outer tube mount has a substantially U-shaped column,
A plurality of strut pressers are connected so as to close both ends of the open side of the U-shaped strut,
At least one of the plurality of strut holders sandwiches the stem body tube, and at least one of the other strut holders sandwiches the stem pinch portion so that the outer tube mount is positioned inside the outer tube. A fixed metal vapor discharge lamp.   2. The metal vapor discharge lamp according to claim 1, wherein the arc tube is made of quartz glass and is a high watt lamp having a rated output of 450 W or more. Provided with a light diffusing balloon having translucency substantially over the upper part of the support part,
House the light source inside the balloon,
A balloon illumination device that fixes the light source to the support and holds the light source at a predetermined height via a pole,
The light source is a metal vapor discharge lamp having a light emitting tube containing a pair of electrodes and a light emitting enclosure, and an outer tube mount for supporting the light emitting tube at a predetermined position in the translucent outer tube,
The outer tube mount has a substantially U-shaped column,
A plurality of strut pressers are connected so as to close both ends of the open side of the U-shaped strut,
At least one of the plurality of column holders sandwiches the stem body tube, and at least one of the other column holders sandwiches the stem pinch portion, so that the position of the outer tube mount is fixed to the outer tube. Balloon lighting device. In the balloon lighting device according to claim 3,
A balloon illuminating device comprising: a base portion connected to a lower end portion of the pole; an electric supply means capable of energizing a light source of the balloon; and a carriage holding the base portion.