EP1059483B1 - Portable lamp - Google Patents

Abstract

The arrangement comprises a textile screen which is stretched through spring rods (4) which are pushed together on a central axis. The springs determine a desired balloon form of the textile screen through positioning a sliding device (3) along the central axis (1). The textile screen is stretched through a tension of the spring rods to a ellipsoid to spherical balloon screen. A socket (2) with a lighting device is located on the central axis.

Description

The invention relates to a portable light, consisting of at least a light bulb, which is received in a holder and a Supply line can be acted upon with voltage, wherein the holder rod-shaped formed and of an at least partially translucent lampshade at least partially enclosed and the lampshade by movable clamping device is held, which in usable condition moved away from the bulb, along the curvature of the phosphor screen issue.

Generic portable lights are as hand or floor lights are known and preferred for temporary illumination of Spaces or exposed surfaces used. According to the intended Intended use may be lights with low power or also to act lights with up to 1000 watts and more. Latter are preferred in the open area for illumination, for example one Construction site, accident sites, major loss or sports events used.

From the European patent application EP 0 834 693, for example, a balloon-equipped luminaire, in which the balloon envelope is used for diffuse light scattering and by an internal Compressor overpressure within the balloon envelope is generated. On reason the overpressure, the balloon envelope is biased and by suitable Pressure sensors measured the existing pressure. With sufficient internal pressure The light source is switched on or off via a safety circuit. In the operation of the lamp has been shown that the balloon envelope ever after use can be easily damaged and cracks or holes, for example, by flying metal chips in the construction industry or caused by glowing ashes in firefighting operations. smaller Although holes or cracks in the textile balloon envelope affect the lighting not, however, the pressure loss leads to premature shutdown the lamp through the pressure difference sensor. Also smaller cracks and Grooves in the diffusion casing due to regular packaging, Assembly and disassembly of the portable lamp lead to the necessary Final pressure for switching on the lamp is no longer reached. The inside Although the balloon envelope arranged compressor is capable of a low To compensate for pressure loss, however, usually results in the safety differential pressure switch to a premature shutdown of the lamp. Therefore These lights can only partially or even in certain work areas not be used.

From British patent 2,052,037 a commercial umbrella is known, in which additionally an energy source and a lighting means in the umbrella holder is integrated. The lighting means is at the top End arranged below the canopy, this two-part trained tension wires is clamped. The tension wires consist of one adapted to the course of the umbrella arcuate portion and a second hinged to a movable support member Tension wire, which is hinged to the arcuate tension wire. With the help of the holding element is the same by simply pushing up causes a stretching of the umbrella, wherein the holding means by a pawl is fixed in an upper position. After impressions of Pawl can pull the retaining element down and thus the Shade be folded. As is known, such constructed Shields no great resistance to wind load on, so it often leads to a folding of the canopy, at the same time the tension wires are damaged and the umbrella becomes unusable.

By contrast, French Patent 2,093,419 discloses a lighting device known to be a cylindrical or nearly spherical Umbrella has. The screen encloses at least partially the attached to a holder bulbs. In a first embodiment is the screen only cylindrical and is through Two-part tension wires stretched out, arranged from vertically, at the Shield adjacent tension wires and at an angle to the horizontal arranged tension wires, which at one end to the vertical Tension wires are articulated and the other hinged with a holding element are connected. At least one retaining element can in this case along a round guide rod moves and by a locking screw in the respective position. In another balloon-shaped Execution are the voltage applied to the canopy tension wires in one fixed upper pivot point, while the opposite end not with connected to the guide rod, but with a polygonal guide wire. Due to this design, the lampshade is down open. A bracing of the former tension wires is done with more Tension wires one end with the former tension wires connected at the other end either with a mounting base the luminous means or a holding element displaceable on the fixing rod, which in turn is fixed by a screw on the guide rod can be. Both variants is the principle of an umbrella underlying, with the first clamping means directly on the lampshade abutment and other tension wires for bracing the former Tension wires are used. Due to the open at the bottom Balloon cover or the lampshade is this, however, for larger wind loads not suitable.

Object of the present invention is a generic transportable To create lamp which avoids the known disadvantages and about It also guarantees a permanent and reliable function.

According to the invention is provided to solve the problem that a holding element for the clamping means against rotation, but axially displaceable on the Holder is mounted.

Through the use of movably arranged clamping means of the existing lampshade, which at least partially around the holder extends and of course can cover them completely, be reliably clamped. Preferably, in this case, the used Clamping means arranged such that they are in the operable state the portable lamp of the holder and thus of the bulb be moved away and after the tensioning process along the curvature of the lampshade rest. After use of the portable lamp can be made for further transport relaxation of the clamping means so that the lampshade collapses and that used material for the lampshade are folded together can. This creates a handy, cylindrical shape of the transportable Luminaire which is stored in a confined space or transported if necessary can be. For the above reason, such is suitable portable light especially good for the use of fire brigades, Technical relief organizations or other mobile units. The lamp is characterized by a light source with high light intensity out, so the preferred field of application outdoors, in athletic or cultural events, in accidents or natural disasters or at nocturnal work can be seen. Preferably, for these lights Illuminants in the form of halogen or metal halide lamps with high light intensity used, whereby by the lampshade a glare-free and diffused light is created. Due to the clamped lampshade is in the following ensures a sufficiently large safety distance to the light source, wherein the radius of the lampshade is predetermined by the clamping means becomes. The spring-loaded lampshade is therefore a safe and reliable work of the lamp achieved because in particular no pressure monitoring inside the lampshade is necessary.

In addition, there is the possibility of the light for salvage and rescue, as a mobile tent lighting or as a film or photo light and if necessary to use as a mobile military light. Due to the high portability The lamp is particularly convenient for transport by car suitable.

To avoid a glare effect is in a first advantageous embodiment the invention provided that the lampshade of a elliptical to spherical balloon shell, which the bulb completely surrounds. Through the formation of a completely closed balloon cover For example, such a luminaire can be used as construction site lighting be used in road traffic, without the passing traffic blinded. In addition, the glare is so degraded that not only objects or people seen in the light cone of the lamp but that areas behind the light also are visible. As a result, for example, there is the possibility of hand signals or the like of persons behind the lamp.

In a further embodiment of the invention, it is provided that the balloon envelope consists of two halves, of which preferably the upper half of a reflective textile material and the lower half of a translucent, For example, translucent, material exists, creating a Light concentration is guaranteed down.

By using the aforementioned materials, even at extreme strong bulbs, such as halogen or metal halide lamps or similar intense light sources, absolutely glare-free diffused light generated, which Even with very high luminosity of the bulb direct looking without glare. By the lamp according to the invention is such a dazzle-free and low-shadow light quality with high Light intensity reaches for a portable, collapsible lamp, as they do previously only of stationary lamps with frosted glass or other diffusing Materials is achievable. The light generated by the textile balloon envelope reduces glare as well as drop shadow by projection of Silhouettes on backgrounds. It creates daylight-like diffuse Light conditions, these special properties to a convenient Illumination of construction sites, rescue and recovery sites, Filming locations and other purposes lead to filming locations where one high light intensity must be achieved with a portable system.

For facilitated replacement of the bulb is in an advantageous embodiment the invention provided that the two balloon envelope halves through For example, a Velcro fastener, button placket or zipper connected to each other. The Velcro closure thus allows a Separate the two halves of the balloon envelope and access the interior of the balloon transportable light, for example, to replace the bulb. In addition, the balloon envelope halves may be different be combined with each other or in case of damage the one or other half exchanged without major problems.

In a particular embodiment of the invention, it is provided that the Clamping means of a plurality of individual springs, for example spring steel wires, Flat spring ribbon, fiberglass or carbon rods, consists. By use Feathering becomes a safe, simple but effective way Tightening the balloon shell causes, which also in case of damage the textile casing is maintained. This will be at least three or more clamping means circumferentially distributed arranged around the holder. Preferably, a number of four or six springs is used but without a significantly larger number used can be. Decisive for the number of springs used here the size of the balloon envelope, so that with smaller portable lights one lower number and preferably for larger portable lights a larger number of individual feathers can be used.

To ensure the flexibility of the springs and the clamping operation facilitate is provided in a further advantageous embodiment of the invention, that the springs hinged at the top and bottom pivotally are.

In a further embodiment of the invention, it is provided that the holder at least one end of a square cross-sectioned rod, For example, made of aluminum or steel, and in the middle of the bulb is included in a light socket. By using a square Cross-section at least at one end of the holder, a holding element be deferred, which is held against rotation and thus a Twisting the clamping means or springs prevented. The holding element can in this case by a locking means, for example in the form of a locking bolt lock, be detected axially in several positions on the holder, whereby the lamp or the balloon envelope spanned differently strong can be. A locking means is therefore also required because the strained balloon cover by the existing counter pressure springs would move together with the holding element and thus a Relaxation would occur.

In a preferred embodiment of the portable lamp is provided the one hand a handle and the other a non-rotatable, but axial slidable retaining element is arranged. The light can thus over held the handle securely and after loosening the locking means and Move the holding means are clamped. In a particularly preferred Embodiment of the luminaire is provided that the clamping means at the end once on the handle or lamp base and once on the holding element are pivotally hinged, wherein the handle or the Light socket and the retaining element on their facing surfaces, faces or peripheral surfaces, with a plurality of corresponding ones Hinges are fitted for receiving the springs. Through the linkage the springs is thus on a displacement of the retaining element the holder optimal adaptation of the spring elements to the available Balloon shell allows and at the same time by a uniform circumferentially distributed Contact pressure a uniform load on the balloon envelope achieved, which depending on the bias an arcuate shape to the central axis take the holder and clamped against the inside of the balloon envelope. According to the displacement of the holding element a spherical or elliptical shape of the balloon envelope is achieved.

In a further embodiment of the invention it is provided that the springs additionally sewn in pockets of the balloon envelope can, thereby achieving an automatic folding of the balloon envelope becomes.

To attach the portable lamp in an elevated position is in Further provided that these with the lower end in a stand is designed plugged.

With the present invention is thus achieved that by the technical Structure of the umbrella construction the balloon light due to the used Balloon material a pleasant even with strong bulbs creates glare-free and diffused light. Another advantage is the high portability to see which by folding or relaxing the clamping means is given and to a collapse of the balloon envelope leads. On site, the lamp by simply moving the retaining element on the center axis of the bracket in the desired shape Balloon shell be brought by appropriate bias. On reason the large distance between bulb and balloon cover is a damage almost excluded by the light source and above In addition, advantageously by the use of the clamping means a permanent clamping of the balloon cover even with external damage ensured the balloon envelope.

The invention will be explained in more detail with reference to the drawings.

Fig. 1

eine Seitenansicht der erfindungsgemäßen transportablen Leuchte mit aufgespannter Ballonhülle,

Fig. 2

eine Ansicht der erfindungsgemäße Leuchte ohne Ballonhülle und

Fig. 3

eine Ansicht der erfindungsgemäßen Leuchte mit einer kugelförmigen Ballonhülle.

It shows

Fig. 1

a side view of the transportable lamp according to the invention with spanned balloon envelope,

Fig. 2

a view of the lamp according to the invention without balloon envelope and

Fig. 3

a view of the lamp according to the invention with a spherical balloon envelope.

Figure 1 shows a side view of the lamp 1 according to the invention, which consists of a rod-shaped holder 2 and a lampshade 3.

The lampshade 3 is about clamping means 4, which for example Consist of spring steel wire, spring band steel, fiberglass or carbon rods can, clamped in its form, with the clamping means 4 at one end a holding element 5 above the holder and at the other end to a Light base 6 are pivotally mounted.

The holder 2 has in the middle region of the lamp base 6, which from a lower hollow cylinder 7, an upper cover plate 8 and the cylinder 7 and the cover plate 8 connecting circumferentially distributed rods 9 exists. The rods 9 are parallel to the longitudinal extent of the holder 2 and serve to protect the illuminant 10. The Illuminant 10 is accommodated in a socket 11, which in the hollow cylinder 7 protrudes and possibly attached to a cylinder bottom and over concealed contact terminals is connected to the supply line 12. The Feed line 12 leads to a transformer 13, which via a supply line 14 and a power plug 15 are connected to the local power grid can. Alternatively, there is the possibility of the lead 12 in use another light source 10 in place of the transformer 13th to insert a battery. When using a halogen lamp, however can be dispensed with a ballast.

The holder 2 further comprises at least above the light socket 6 a square bar 16 on. Below the light socket 6 is a handle 17 is attached. In place of the square bar 16 there is the possibility to provide a different angular or oval shape, provided a twist of the above-pushed holding member 5 is avoided to twist to prevent the clamping means 4. The holding element 5 has a corresponding Recess 18, in which the upper square bar 16 out is. Furthermore, the holding element 5 is equipped with a locking bolt lock 19, which engages existing holes 27 of the square bar 16. alternative it is possible to use a set screw, which by the generated back pressure jamming of the retaining element 5 the square bar 16 allows. By locking bolt lock 19 is thus the possibility of holding element 5 on the upper square bar 16 in different positions.

The holding element 5 and the lamp base 6 are distributed with several circumferentially Hinges 20 equipped, which via a bearing pin 21st are pivotally mounted. Two corresponding hinges each 20 take further the ends of the clamping means 4, in the illustrated embodiment Spring steel wire, on. The spring steel wire as a clamping device 4 In this case, for example, can be inserted into the hinges 20 and optionally be attached by other aids.

Depending on the position of the upper support member 5 is made by the Shift thus a bias on the clamping means. 4 exerted, which to an arcuate clamping of the individual Clamping 4 leads. Characterized in that a plurality of the clamping means 4 circumferentially distributed are arranged around the lamp base 6 thus becomes an elliptical or spherical clamping of the clamping means 4 causes. The shape of the clamping means 4 is comparable to the longitudes the globe. About the tensioning means 4 is located in a further balloon envelope 22, which executed in two parts corresponds to the lampshade 3. The upper half of the balloon cover 22 is made of textile reflective, for example Material, whereas, while the lower half of the balloon cover 22 made a film, such as a translucent film can exist. hereby the radiation emitted by the luminous means 10 is from the upper Balloon shell 22 is reflected downwards and through the translucent design the lower half of the balloon envelope 22 becomes a diffused glare-poor light generated. The shape of the balloon envelope 22 is essentially determined by the position of the holding element 5 on the upper square bar 16 predetermined and leads with a pushing up of the holding element 5 to a reduction of the Balloonhüllenumfangs or after switching off the lamp 1, this can be brought into a handy cylindrical shape. The two Balloon shell halves 22 are in this case by a Velcro closure 23rd interconnected and thus allow the replacement of only the top or lower balloon shell half 22, or optionally an exchange of the bulb 10. The lower handle 17 can be used to attach the Lamp 1 be designed as a tripod pin and thus allows the attachment the lamp 1 on a tripod or possibly a larger one Stand, wherein the lower handle 17 or tripod pin with the bottom of the Hollow cylinder is connected. For better representation of the internal structure the lamp 1, the balloon cover 22 is cut along the dashed line 24. In working order, exceptions and special Apart from applications, the balloon envelope 22 extends over 360 ° around the holder 2 and thus the lamp 10 around.

Figure 2 shows the lamp 1 according to the invention without balloon envelope, wherein the Retaining element 5 after releasing the locking bolt locks 19 against the Light base 6 has been moved upwards. This causes a relaxation the clamping means 4 and leads after switching off the lamp 1 to a plant of the clamping means 4 on the lamp base 6 and allows in the following, the folding of the balloon cover 22, which here, however not shown.

Figure 3 shows the lamp 1 according to the invention in a balloon form, wherein the Light socket 6 with illuminant 10 is indicated only schematically and from the balloon envelope 22, which in turn spanned by the tensioning means 4 is surrounded.

LIST OF REFERENCE NUMBERS

1.

lamp

Second

bracket

Third

lampshade

4th

clamping means

5th

retaining element

6th

light socket

7th

hollow cylinder

8th.

Cover plate

9th

Rod

10th

Lamp

11th

version

12th

supply

13th

transformer

14th

supply

15th

power plug

16th

Square bar

17th

handle

18th

recess

19th

Stop bolt lock

20th

hinge

21st

location pin

22nd

balloon envelope

23rd

Velcro closure

24th

line

25th

bag

26th

stand

27th

drilling

Claims (15)

1. Transportable light (1) consisting of at least one lamp (10) which is held in a support (2) and can be powered via a lead (12), wherein the support (2) is rod-shaped and is surrounded by an at least partially light-transmitting lampshade (3) and the lampshade (3) is held by movable stretching means (4) which, when moved away from the lamp (10) in the operative condition, bear along the camber of the lampshade (3), characterized in that a retaining element (5) for the stretching means (4) is mounted fixedly in rotation, but axially displaceably, on the support (2).
2. Transportable light according to Claim 1, characterized in that the lampshade (3) consists of an ellipsoidal to spherical balloon envelope (22) which completely surrounds the lamp (10).
3. Transportable light according to Claim 2, characterized in that the balloon envelope (22) consists of two halves, of which preferably the upper half consists of a reflecting textile material, and the lower half, of a light-transmitting, preferably translucent, material.
4. Transportable light according to Claim 3, characterized in that the two halves of the balloon envelope are joined to each other by e. g. a hook and loop strip fastening (23), button border, or zip fastener.
5. Transportable light according to any one of Claims 1 to 4, characterized in that the stretching means (4) consists of a plurality of individual springs of e. g. spring steel wire, flat spring steel, or fibreglass or carbon rod.
6. Transportable light according to any one of Claims 1 to 5, characterized in that at least three stretching means (4) are pitched circumferentially around the support (2).
7. Transportable light according to any one of Claims 1 to 6, characterized in that the springs (4) are hinged at their upper and lower ends.
8. Transportable light according to any one of Claims 1 to 7, characterized in that the support (2) consists at at least one end of a square-section rod (16) of e.g. aluminium or steel, and the lamp (10) is held centrally in a lamp socket (6).
9. Transportable light according to any one of Claims 1 to 8, characterized in that a handle (17) is arranged on the support (2) at one end, and the retaining element (5) at the other end.
10. Transportable light according to any one of Claims 1 to 9, characterized in that the at least one retaining element (5) is axially securable in a plurality of positions on the support (2) by locking means, e. g. by a snap-in lock bolt (19).
11. Transportable light according to any one of Claims 1 to 10, characterized in that the stretching means (4) are hinged by their ends to the handle (17) or lamp socket (6) and to the retaining element (5).
12. Transportable light according to any one of Claims 1 to 11, characterized in that the handle (17) or lamp socket (6) and the retaining element (5) are fitted, on their facing surfaces, end surfaces or circumferential surfaces, with a plurality of corresponding hinges (20) to receive the springs (4).
13. Transportable light according to any one of Claims 1 to 12, characterized in that the springs (4) assume an arched shape with respect to the central axis of the support (2) and bear with tension on the inside of the balloon envelope (22).
14. Transportable light according to any one of Claims 1 to 13, characterized in that the springs (4) are held in sewn pockets (25) of the balloon envelope (22).
15. Transportable light according to any one of Claims 1 to 14, characterized in that the light is configured with its lower end insertable into a stand.

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