JP2010015999A - Portable lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable lamp which can be tensioned without necessity of much labor. <P>SOLUTION: The lamp includes a folding screen which is at least partially provided with a reflective layer, and at least one mobile tensioning means for stretching the folding screen. The folding screen surrounds an illumination means in the taut state and in the relaxed state. The mobile tensioning means is fixed to a telescope-like stick assembly with a telescope-like stick inside and a telescope-like case outside. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

    The present invention is a lamp comprising a foldable shade that is at least partially coated with a reflective layer and is provided with one or more movable stretching means, the stretching means comprising a foldable shade And the foldable shade relates to a lamp that surrounds the illumination means in the extended and unstretched state.

      Lamps with folding shades are known as handheld lamps or stand lamps and are preferably used to illuminate a space or outdoor surface for a limited time. Depending on the intended use, it may be a low power lamp or a power lamp of up to 1000 watts or more. In the case of the latter lamp, it is preferably used outdoors, for example for lighting in the case of construction sites, accident sites, large-scale disaster areas, or sporting events.

    For example, Patent Document 1 discloses a portable lamp in which a lamp shade is stretched by an extension mechanism. As a special feature of this configuration, it can be noted that the lamp shade almost completely surrounds the illumination means. However, operation becomes difficult if the installation is complicated.

EP1059483

    An object of the present invention is to provide a portable lamp that can be stretched without requiring large energy.

    The problem according to the present invention is solved by fixing the expansion means to an expansion / contraction bar assembly including an expansion / contraction bar on the inside and an expansion / contraction case on the outside. Further advantageous configurations emerge from the dependent claims.

    According to the invention, an extension device is provided for a portable lamp that stretches a foldable shade. The stretching device is composed of a telescopic rod assembly which is provided with a telescopic rod on the inside and a telescopic case on the outside, which are nested with each other. One piston is provided at each of the first ends of the telescopic rods present inside the telescopic case. This piston is made of, for example, brass. In contrast, the telescopic case is made of special steel. The telescopic bar assemblies each terminate at an extension rim at the outer end. The extension means is fixed to the extension rim and is stretched by the extension rim. In addition, the telescopic case is provided with a lighting means mount, which mounts the lighting means adapted to be supplied with current by an electrical supply cable.

      The illumination means mount is fixed on the stand rod of the stand. A pair of tow ropes is fixed to the piston and passes through the telescopic case. Both traction ropes are connected to each other by a handle. If the ramp is installed on a stand, possibly several meters high, the stretching device can be stretched by manually towing the towing handle. At this time, the telescopic rod is pulled into the telescopic case, and the upper extension rim is pulled downward in the direction of the arrow. This causes the upper extension rim to approach the lower extension rim secured to the illumination means mount so that the extension means moves outward as indicated by the arrows. As a result, the lamp shade that has been folded back on the extension means is stretched.

The present invention will be described below with reference to the drawings.

It is a figure of the portable lamp which concerns on this invention provided with a tension means.

    FIG. 1 shows a stretching device 1 for a portable lamp 500 according to the present invention. This expansion device expands the foldable shade 300. The stretching device 1 comprises a telescopic bar assembly 2. This telescopic rod includes inner telescopic rods 3 and 3 'and outer telescopic cases 4 and 4' illustrated transparently in FIG.

The telescopic rod and the telescopic case are provided so as to be nested with each other. In the present example, there are pistons 5 and 5 'formed of brass in the first ends of the expansion and contraction bars 3 and 3' inside the expansion and contraction cases 4 and 4 ', respectively. On the other hand, the telescopic cases 4 and 4 'are made of special steel. The outer ends of the telescopic bar assembly 2 are terminated by extension rims 6 and 6 ', respectively. Extension means 9, 9 'are fixed to the extension rim, and these extension means are stretched by extension rims 6, 6'. An illuminating means mount 7 is provided on the telescopic cases 4 and 4 '. The illumination means mount accommodates the illumination means 8, and power is supplied to the illumination means by a power cable 10. FIG. 1 shows a stretching device 1 for a portable lamp according to the invention in a stretched state. Here, the heat of the illumination means 8 heats the telescopic rod assembly 2 and the pistons 5, 5 ′ therein. Since the pistons 5 and 5 'have a high expansion rate, the pistons 5 and 5' expand more than the inner diameter of the telescopic cases 4 and 4 '. Since the pistons 5 and 5 'expand more strongly, the pistons 5 and 5' are stuck inside the telescopic cases 4 and 4 '. The pistons 5 and 5 ′ contract again in the cooled state, thereby releasing the stuck state between the expansion / contraction cases 4 and 4 ′ and the pistons 5 and 5 ′. As a result, the telescopic rods 3 and 3 ′ can be moved again from the telescopic cases 4 and 4 ′ without resistance, and thus the stretching means 9 and 9 ′ can be released. When the extension device 1 is released from the extension, the distance between the extension means rims 6 and 6 'increases, so that the extension means 9 and 9' are illuminated while forming a configuration in which the extension means 9 is cylindrical. Since it moves in the equator direction relative to the means 8, the portable lamp can be transported without taking up space.

The illumination means mount 7 is fixed on the stand rod 141 of the stand 141. Tow ropes 151 and 151 ′ are fixed to the pistons 5 and 5 ′, and pass through the telescopic cases 4 and 4 ′. The tow ropes 151 and 151 ′ are connected to each other by the handle 150. If the ramp is installed on the stand 141, possibly at a height of several meters, the extension device 1 can be extended by manually towing the tow handle 150. At this time, the telescopic rods 3, 3 ′ are drawn into the telescopic cases 4, 4 ′, and the upper extension rim 6 is pulled downward in the direction of the arrow. This causes the upper rim 6 to approach the lower extension rim 6 'secured to the illumination means mount so that the extension means 9, 9' move outward as indicated by the arrows. As a result, the lamp shade that has been folded back on the extension means 9, 9 'is stretched.

DESCRIPTION OF SYMBOLS 1 Stretching device 2 Telescopic rod assembly 3 Telescopic rod 4 Telescopic case / hollow cylinder 5 Piston 6 Stretch rim 7 Illuminating means mount 8 Illuminating means 9 Stretching means 10 Power cable 100 Stretching aid 140 Stand 141 Stand rod 150 Towing handle 151 Towing rope 151 '' Tow rope 300 Folding shade 500 lamp

Claims (5)

A lamp (500) comprising a foldable shade (300) at least partially coated with a reflective layer, the foldable shade (300) having 1 for extending the foldable shade (300) One or more movable stretching means (2, 9) are provided, the foldable shade (300) enclosing the lighting means (8) in the stretched and unstretched state. In
The extension means (2, 9) are fixed to an extension rod assembly (2) having an extension rod (3, 3 ') on the inside and an extension case (4, 4') on the outside. lamp. The lamp (500) according to claim 1, wherein
The telescopic bar assembly (2) terminates at the extension rim (6, 6 ') at the outer end, respectively, and the extension means is fixed to the extension rim (6, 6'). lamp. Lamp (500) according to claim 1 or 2,
A lamp characterized in that the telescopic case (4, 4 ') is provided with an illumination means mount (8). The lamp (500) according to claim 1, 2 or 3,
A ramp, wherein the tow handle (150) is provided for manual tensioning. Lamp (599) according to any one of claims 1 to 4,
The tow rope (151, 151 ′) is fixed to the end of the telescopic rod (3, 3 ′) or to the end configured as a piston (5, 5 ′). .