Lighting device

Abstract

Lighting device with a case a lighting element, wherein the lighting element comprises a strip of sheet metal, wherein in a first state the lighting element is wound up in the housing and in a second state extends at least partially outside the housing, wherein the lighting element has a multitude of lighting elements which are arranged along the sheet metal strip.

Description

[0001] The present invention relates to a lighting device, and in particular a lighting device that can be stored quickly and compactly. Specifically, the present invention relates to a mobile lighting device that can be quickly transported from one place to another and quickly set up.

[0002] Conventional lighting fixtures feature a rigid light source with fixed dimensions. This light source contains one or more light-emitting elements that generate light. Therefore, the dimensions of the lighting fixture are essentially determined by the light source and cannot be significantly reduced for transport. Furthermore, setting up such conventional lighting fixtures at their point of use is difficult. Additional components, such as a tripod or ceiling mount, are required, which also need to be stowed for transport.

[0003] The object of the present invention is to create a lighting device that can be stored compactly and set up easily.

[0004] The problem is solved by a lighting device according to claim 1.

[0005] The lighting device according to the invention comprises a housing and a lighting element. The lighting element has a metal strip, which in a first state is wound up inside the housing and in a second state extends at least partially outside the housing. According to the invention, the lighting element has a plurality of light-emitting elements arranged along the metal strip. The light-emitting elements are, in particular, light-emitting diodes (LEDs) arranged along the metal strip of the lighting element. Thus, the metal strip serves, on the one hand, as a carrier for the light-emitting elements and, on the other hand, can be arranged together with the light-emitting elements inside the housing in the first state, so that the lighting device can be transported in a space-saving manner.To set up and commission the lighting device, the lighting element is pulled out of the housing, so that the lighting element is in a second state and extends at least partially outside the housing. The light elements, which are arranged along the lighting element, can then emit light. The housing and lighting element thus serve both to ensure the safe and compact transport of the lighting device and to facilitate quick installation and setup. The sheet metal strip can be flexible enough to be rolled up inside the housing, while also possessing the necessary rigidity to extend, along with the light elements, at least partially outside the housing in its second state.

[0006] Preferably, the lighting elements are arranged on a flexible carrier. In this case, the flexible carrier is particularly positioned directly on the sheet metal strip. Electrical connections for the lighting elements are provided within the flexible carrier.

[0007] Preferably, in the second state, the sheet metal strip extends in a straight line, at least in sections. The sheet metal strip thus provides the support element for the lighting elements, and in particular, the sheet metal strip extends in a straight line outside the housing and can therefore reach a desired height of the lighting device from the housing.

[0008] Preferably, the sheet metal strip extends in a self-supporting manner in the second state. Therefore, no further fastening elements or stiffening elements of the sheet metal strip are required. Rather, the sheet metal strip itself supports the multitude of lighting elements when it extends outside the housing. This essentially corresponds to the function of a measuring tape, which can be wound up inside its housing and can also extend self-supportingly outside the housing.

[0009] Preferably, in its first state, i.e., when wound up inside the housing, the sheet metal strip has a straight transverse cross-section. This provides the necessary flexibility for winding the strip within the housing. In its second state, where the sheet metal strip extends outside the housing, it has a curved or arched transverse cross-section. This curvature stiffens the strip, allowing it to support the lighting elements without the need for additional stiffening or fastening elements.

[0010] Preferably, the sheet metal strip has a thickness between 0.1mm and 0.5mm.

[0011] Preferably, the thickness of the sheet metal strip is constant along its length. Alternatively, sections of the sheet metal strip can have a greater thickness. In particular, these sections can coincide with the lighting elements, so that the lighting elements are not bent when rolled into the housing, while the thinner sections ensure the necessary flexibility of the lighting element.

[0012] Preferably, the lighting element has a length of more than 1m and in particular more than 1.5m.

[0013] Preferably, the housing has an electrical connection for supplying electrical power to the multitude of lighting elements.

[0014] Preferably, a spring element is provided for fully retracting the lighting element into the first state, wherein, in particular, the spring element is tensioned by moving the lighting element from the first state to the second state. The spring element thus pre-tensions the lighting element towards the first state, so that the spring element automatically winds up the lighting element.

[0015] Preferably, the housing has a locking element for securing the lighting element in its position. The locking element can, in particular, block the spring force of the spring element and prevent the lighting element from unintentionally winding up. When the locking element is released, the lighting element then winds up, primarily due to the preload provided by the spring element.

[0016] Thus, a lighting device is created which, in analogy to a metal measuring tape, can on the one hand be easily stored by winding it up in its housing and on the other hand can extend itself to support the erection of the lighting device.

[0017] The invention is explained below with reference to preferred embodiments and the accompanying figures.

[0018] They show: Fig. 1 a lighting device according to the present invention, Fig. 2 a detailed view of a lighting element of the present invention and Fig. 3A and Fig. 3B a sectional view of the lighting element according to the present invention.

[0019] The lighting device of the present invention comprises a lighting element 10. The lighting element 10 has a metal strip 12, with light elements 14 arranged along the metal strip 12. Furthermore, the lighting device has a housing 16, wherein the lighting element 10 can be wound up inside the housing 16. The lighting element 10 can be pulled out of the housing 16 in the direction of arrow 20 into a second state in which the lighting element extends at least partially outside the housing 16. When the lighting element 10 is moved in the direction of arrow 22, it is wound up inside the housing 16, thus enabling space-saving storage of the lighting device. In this state, the lighting element extends straight outside the housing 16 and is self-supporting.

[0020] In Fig. Figure 2 shows a detailed view of the lighting element 10. A flexible carrier 24 is arranged on the sheet metal strip 12, and a plurality of lighting elements 14 are arranged on this carrier along the sheet metal strip 12. The lighting elements 14 are electrically connected to each other. The housing 16 has an electrical connection for supplying power to the lighting elements 14.

[0021] The following refers to the Fig. 3A and Fig. Figure 3B, which shows a cross-section of the lighting element. Fig. 3A the lighting element 10 inside the housing 16 when the latter is wound up. A transverse cross-section through the lighting element 10 is straight, so that the sheet metal strip 12 has the necessary flexibility to be wound up inside the housing 16. When the lighting element 10 is then moved into the second state, the sheet metal strip 12 outside the housing 16 has the following shape as shown in the illustration. Fig. 3B a curved or bent transverse cross-section. The curvature of the sheet metal strip 12 creates, analogous to a measuring tape, a self-supporting stability for the lighting element 10, which is sufficient so that the lighting element 10 can be extended to a desired height and then generate light through the multitude of lighting elements 14.

[0022] To set up the lighting device, the lighting element 10, which is in its first state, is unwound or pulled out of the housing 16, thereby bringing it into a self-supporting second state. If the lighting device is then to be dismantled, particularly for transport, the lighting element 10 is wound up inside the housing 16 and thus returned to its first state. This results in a compact lighting device. The lighting element 10, and especially the light elements 14, are protected by the housing 16 and cannot be damaged during transport. At the same time, a compact lighting device is created that requires no additional mounting devices, such as tripods or wall / ceiling mounts. The lighting device can also be stored compactly for transport.

Claims

[1] Lighting device with a case a lighting element, wherein the lighting element comprises a strip of sheet metal, wherein in a first state the lighting element is wound up in the housing and in a second state extends at least partially outside the housing, wherein the lighting element has a multitude of lighting elements which are arranged along the sheet metal strip. [2] Lighting device according to claim 1, wherein the sheet metal strip in the second state extends in a straight line at least in sections. [3] Lighting device according to claim 1 or 2, wherein the sheet metal strip extends in a self-supporting manner in the second state. [4] Lighting device according to one of claims 1 to 3, wherein the sheet metal strip has a straight transverse cross-section in the first state, wherein the sheet metal strip has a curved transverse cross-section in the second state. [5] Lighting device according to any one of claims 1 to 4, wherein the housing has an electrical connection. [6] Lighting device according to one of claims 1 to 5, wherein a spring element is provided for the complete retraction of the lighting element, wherein in particular the spring element is tensioned when the lighting element is moved from the first state to the second state. [7] Lighting device according to any one of claims 1 to 6, wherein the housing has a locking element for locking the lighting element in its position.

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