Photographic lighting device

Abstract

The application relates to a lighting device, comprising a housing, a planar arrangement of lamps, which are arranged in the housing, and a plate device, which is received on the housing, wherein a housing rear wall is formed by the plate device, the plate device has a circuit board, on which an electric circuit associated with the lamps is arranged, and the plate device has a heat sink device for passive cooling, which is formed by pin-type cooling elements. The application also relates to a headlight.

Claims

1. A soft box, wherein the soft box comprises plural side walls made of a flexible material; wherein each of the plural side walls has a proximal edge and a distal edge opposite to the proximal edge; wherein the soft box is configured to be fastened to a lamp at the proximal edges of the sidewalls; wherein each side wall has a first pocket provided at a first corner at the distal edge of the side wall and directly connected to the side wall; wherein each side wall has a second pocket provided at a second corner at the distal edge of the side wall and directly connected to the side wall; wherein the soft box further comprises plural flexible rods; wherein each flexible rod has a first end and a second end; wherein the first and second ends of each flexible rod are received in the first and second pockets, respectively, of one sidewall of the plural sidewalls; wherein each flexible rod extends along the one sidewall for tensioning the one side wall; and wherein each flexible rod has a curved portion bending towards the proximal end of the one sidewall wherein the distal edges of the plurality of sidewalls form a substantially rectangular opening.

2. The soft box of claim 1, wherein a number of the plural sidewalls is four, and wherein a number of the plural flexible rods is four.

3. The soft box of claim 1, wherein the side walls are made of a textile material.

4. The soft box of claim 1, wherein the first pocket is continuous with the side wall, the second pocket is continuous with the side wall, or both the first and second pockets are continuous with the side wall.

5. The soft box of claim 1, wherein the first pocket, the second pocket, or both the first and second pockets are made of the same material or materials as the side wall.

6. A lighting device, comprising a housing; at last one lamp mounted on the housing; and a soft box fastened to the housing; wherein the soft box comprises plural side walls made of a flexible material; wherein each of the plural side walls has a proximal edge and a distal edge opposite to the proximal edge; wherein the soft box is fastened to the housing at the proximal edges of the sidewalls; wherein each side wall has a first pocket provided at a first corner at the distal edge of the side wall and directly connected to the side wall; wherein each side wall has a second pocket provided at a second corner at the distal edge of the side wall and directly connected to the side wall; wherein the soft box further comprises plural flexible rods; wherein each flexible rod has a first end and a second end; wherein the first and second ends of each flexible rod are received in the first and second pockets, respectively, of one sidewall of the plural sidewalls; wherein each flexible rod extends along the one sidewall for tensioning the one side wall; and wherein each flexible rod has a curved portion bending towards the proximal end of the one sidewall wherein the distal edges of the plurality of sidewalls form a substantially rectangular opening.

7. The lighting device of claim 6, wherein a number of the plural sidewalls is four, and wherein a number of the plural flexible rods is four.

8. The lighting device of claim 6, wherein the side walls are made of a textile material.

9. The lighting device of claim 6, wherein the first pocket is continuous with the side wall, the second pocket is continuous with the side wall, or both the first and second pockets are continuous with the side wall.

10. The lighting device of claim 6, wherein the first pocket, the second pocket, or both the first and second pockets are made of the same material or materials as the side wall.

Description

BRIEF DESCRIPTION

(1) Preferred embodiments will be explained hereinafter with reference to figures of a drawing, in which:

(2) FIG. 1 shows a perspective illustration of a lighting device from the front,

(3) FIG. 2 shows a perspective illustration of the lighting device from FIG. 1 from behind,

(4) FIG. 3 shows a further perspective illustration of the lighting device from FIG. 1 from behind,

(5) FIG. 4A to 4E show schematic illustrations of a quick release closure device, which is mounted on a spherical head

(6) FIG. 5 shows a perspective illustration of a soft box from the front,

(7) FIG. 6 shows a further perspective illustration of the soft box from FIG. 5,

(8) FIG. 7 shows a schematic illustration of a stand element having two spherical-head elements, and

(9) FIG. 8 shows a schematic illustration of a portion of a stand element with a base plate for mounting of a quick release closure device.

DETAILED DESCRIPTION

(10) FIG. 1 shows a perspective illustration of a lighting device 1 from the front at an angle. The shown lighting device 1 is configured as a headlight for shooting photos or recording video. A plate device or arrangement 3 is received in a housing 2. A plurality of lamps 5 are fitted on a circuit board 4 arranged in the plate device 3, wherein, in the shown example, a regular arrangement is formed. The lamps 5 are LED luminaires (LED=light-emitting diode) in the shown embodiment.

(11) The housing 2 is produced with side walls 6, in which heat dissipation openings 7 are formed. The housing 2 is made of aluminium for example, which is weight-optimising.

(12) On the front side, a function frame 8 is formed on the housing 2 and has two mutually opposed frame parts 8a, 8b, which have guides 9 on the inner side, which are used to receive function devices (not illustrated), for example a lens plate and/or a dispersion plate.

(13) A circuit arrangement is provided on the circuit board 4 and provides the electric circuit for the lamps 5.

(14) FIGS. 2 and 3 show perspective illustrations of the lighting device 1 from behind at an angle. A heat sink device 10 with a base plate 11 and also an arrangement of pin-type body elements 12 is formed, which is used to dissipate the heat produced during operation of the lamps 5. The arrangement of pin-type body elements 12 is delimited laterally by the side walls 6. In the shown embodiment the pin-type body elements 12 are arranged on the rear side of the base plate 11 in accordance with a regular arrangement. The pin-type body elements 12 can be fastened to the base plate 11 with the aid of different connection techniques, including welding, soldering, press-fitting and/or adhesive bonding.

(15) In the shown embodiment the base plate 11 is formed with the aid of the circuit board 4 as part of the plate device 3. At the same time, the plate device 3 together with the circuit board 4 serves as a rear wall of the housing 2.

(16) As can best be seen from FIG. 2, a seat 13 is integrated into the arrangement of cooling pin-type elements 12 so as to detachably mount a quick release closure device 14 in said seat, said quick release closure device being shown in FIGS. 4a to 4e.

(17) According to FIG. 2 connection devices 14 are provided, for example in order to connect an energy supply and/or data or control line connections.

(18) FIG. 4A to 4E show various illustrations of a quick release closure device 15 with a main plate 16, on which a quick release closure 17 is arranged, which, in the shown embodiment, is mounted on a spherical head 18. The quick release closure 17 has a tensioning device 19 in order to open and to close the quick release closure 17. A locking device 20 is provided on the main plate 16 and locks the quick release closure device 15 against an unintended release when the main plate 16 is mounted in the region of the seat 13. To this end, a biased pin engages with an associated seat.

(19) FIGS. 5 and 6 each show a perspective illustration of a soft box 30, which has fastening means 32 in the region of side walls 31, which fastening means are used for push-button fastening to associated fastening means 33 on the housing 2 (see FIGS. 1 to 3). Tensioning elements 34 are provided in the side walls 32 and are formed with the aid of flexible rods, which are in turn received in associated receiving pockets or tabs on the side walls 31 made of flexible material, for example a textile material. Curved portions 36 of the tensioning elements 34 are arranged in a proximal region. Alternatively, the curved portions 36 can also be arranged in the distal region of the side walls 31 (not illustrated). In particular with such an embodiment, end portions of the tensioning elements 34 can protrude beyond the lighting device and can engage with associated recesses on the lighting device when the soft box 30 is fastened.

(20) In the embodiment shown by way of example, four side walls 31 are provided with the associated tensioning elements 34. In other embodiments, a greater number of side walls may also be provided, for example eight partial side walls, which are formed on the soft box around the opening and which are each assigned a tensioning element in a comparable manner. With a square opening of the soft box, two partial side walls can thus be arranged on each of all four sides.

(21) It is clear from FIG. 1 that the function frame 8 has slits 35, with which the curved portions 36 of the tensioning elements 34 engage when the soft box 30 is fitted on the housing 2.

(22) FIGS. 7 and 8 show schematic illustrations of a stand element 40 having a base body 41, on which two spherical-head elements 42, 43 are detachably mounted. Furthermore, a mounting element 44 is arranged on the base body 41, by means of which mounting element the stand element 40 can be mounted on a stand system, for example by being plugged on. The spherical-head elements 42, 43 can be used to detachably mount objects thereon, for example lighting devices, by means of the above-described quick release closure device. Additional apertures 45 are formed in the main body 41 and can also be used to receive the spherical-head elements 42, 43, such that these can be mounted along the base body 41 in various positions.

(23) FIG. 8 shows an embodiment of the stand element 40, in which, in contrast to the illustration in FIG. 5, a mounting base or plate 46 is arranged on the base body 41 and can be used to mount a cutting closure device (see FIGS. 4A to 4E). The stand elements 40 shown in FIGS. 7 and 8 make it possible to mount a plurality of objects, in particular lighting devices, on a stand system. The spherical-head connection supports a flexible adjustability of the physical orientation of the detachably mounted objects.

(24) The features of the invention disclosed in the above description, the drawing and the claims can be of significance both individually and in any combination for the implementation of the invention in the various embodiments thereof.