Work lamp with removable diffuser

Abstract

A work lamp (1) comprising a semiconductor light source (4), a converging lens (60) disposed in front of the semiconductor light source (4), and a removable diffuser (40), designed as a hollow body, disposed in front of the converging lens (60), and the work lamp (1) comprising a housing pivotally articulated on a U-shaped support (20), the support (20) being disposed on a base module (30). - Fig. 1 -

Description

Title of the invention: Work lamp with removable diffuser Technical field of the invention

[0001] The present invention relates to a work lamp with a removable diffuser. Context of the invention

[0002] Work lamps, also known as work lights, are well known in practice. In particular, there are work lamps with a removable diffuser. The work lamp can thus be used both as a spotlight and for illuminating large indoor areas. When the diffuser is in place, the light emitted by the light source is diffused and therefore evenly distributed around the sides of an interior space.

[0003] EP 2 261 549 A1 shows a light-diffusing accessory for a portable lamp. DE 10 2011 108 701 A1 shows a work lamp with a retractable hook. US 2019 / 0285256 A1 shows a work lamp mounted pivotally on a base module. Technical problem to solve

[0004] The invention aims to further improve the functionality of a work lamp equipped with a diffuser. Description of the invention

[0005] The technical problem of the invention is solved by a work lamp according to any one of the independent claims.

[0006] Preferred embodiments and additional developments of the invention will appear from dependent claims, the description and the drawings.

[0007] According to a first aspect, the invention relates to a work lamp comprising a semiconductor light source, a converging lens being disposed in front of the semiconductor light source, and a removable diffuser, designed as a hollow body, being disposed in front of the converging lens, and the work lamp comprising a housing pivotally articulated on a U-shaped support, the support being disposed on a base module.

[0008] Optionally, the diffuser is fixed by means of a bayonet closure.

[0009] Optionally, a conical reflector, in particular a frustoconical one, is arranged around the semiconductor light source.

[0010] Optionally, the housing is pivotable relative to the support by at least 90°.

[0011] Optionally, the support is rotatable on the base module around an axis extending perpendicularly to the pivot axis.

[0012] According to one aspect, the work lamp comprises a semiconductor light source, a removable diffuser designed as a hollow body being disposed in front of the semiconductor light source in a first housing, the work lamp having a second housing for the diffuser.

[0013] Optionally, the first housing is located on a front side and the second housing on a rear side of the work lamp.

[0014] Optionally, the second housing is arranged on a support which is arranged separately from a work lamp housing on the rails of a base module.

[0015] According to one aspect, the work lamp comprises a semiconductor light source, a removable diffuser designed as a hollow body being disposed in front of the semiconductor light source, the work lamp comprising a housing that can pivot on a support around an axis extending perpendicularly to the central axis of the diffuser, the support being disposed on a base module, and a hook for suspending the work lamp being disposed on the base module, so that the work lamp can be suspended high up in an inverted position, the diffuser being oriented downwards in this position.

[0016] Optionally, the hook is arranged on a second housing for the diffuser.

[0017] The work lamp includes a semiconductor light source. The semiconductor light source may, in particular, be in the form of an LED array. In this case, a printed circuit board, in particular a flat printed circuit board, is preferably equipped with a plurality of LEDs.

[0018] The work lamp according to the invention can be designed as either a battery-powered lamp or a mains-powered lamp.

[0019] According to the invention, a converging lens is disposed in front of the semiconductor light source with respect to the path of the beam, and a removable diffuser designed as a hollow body is disposed in front of the converging lens.

[0020] The combination of a converging lens and a removable diffuser offers enhanced dual functionality, allowing the work lamp to be used both as a spotlight with a centered light cone and as a diffused light with a lampshade for lighting an interior space.

[0021] The diffuser is preferably designed as a hollow body made of plastic. The diffuser material contains impurities or defects that diffuse light, from which the light is emitted in all directions. The impurities or defects may, in particular, be pigmentation, especially white particles. A structured surface, especially a rough one, also makes it possible to obtain diffuse light emission.

[0022] Preferably, the diffuser can be fixed to a work lamp housing by means of a bayonet closure.

[0023] In particular, the diffuser can be inserted into a housing of the work lamp and locked to the housing by a rotation of less than 90°, preferably less than 45°.

[0024] In a further development of the invention, a conical, in particular frustoconical, reflector is arranged around the semiconductor light source. The reflector further improves the focusing of the light, particularly in the function of a projector without an attached diffuser.

[0025] According to the invention, the work lamp comprises a housing pivotally articulated to a U-shaped support. In particular, the housing can pivot at least 90° perpendicular to a central axis of the diffuser and / or reflector.

[0026] Thus, the work lamp can be suspended high up in an inverted position, in which the diffuser is oriented downwards.

[0027] The support is arranged on a base module, which allows the work lamp to be placed on the floor.

[0028] The basic module may in particular include two stringers with feet, connected by at least one cross member.

[0029] In a further development of the invention, the support is rotatable on the base module around an axis perpendicular to the pivot axis. Thus, when placed on the ground, it is possible to change not only the angle upwards and downwards, but also the direction of radiation to the right and to the left. In the upright position, the axis of rotation is therefore oriented vertically.

[0030] According to another aspect, the invention relates to a work lamp. This may in particular include one or more of the features described above.

[0031] The work lamp includes a semiconductor light source and a removable diffuser designed as a hollow body, which is disposed in front of the semiconductor light source in a first housing.

[0032] According to the invention, the work lamp includes a second housing for the diffuser.

[0033] The diffuser can thus be removed in front of the semiconductor light source and inserted into the second housing. Therefore, the second housing serves only to hold the diffuser when it is not to be used.

[0034] The diffuser will then be securely attached to the work lamp, notably by means of a bayonet fitting. In the second housing, there is no light source behind the diffuser.

[0035] According to one embodiment of the invention, the second housing is arranged on a support which is arranged separately from a work lamp housing on the rails of a base module.

[0036] Thanks to the coupling with the rail module, preferably at the rear of the work lamp, the position of the housing can be changed without affecting the position of the diffuser.

[0037] According to another aspect, the invention relates to a work lamp which may in particular have one or more of the characteristics described above.

[0038] The work lamp includes a semiconductor light source, with a removable diffuser designed as a hollow body disposed in front of the semiconductor light source.

[0039] In addition, the work lamp includes a housing that can pivot on a support around an axis extending perpendicularly to the central axis of the diffuser.

[0040] According to the invention, the support is arranged on a base module, and a hook for suspending the work lamp is arranged on the base module.

[0041] The work lamp can thus be adjusted in a particularly simple way relative to a position placed on the ground so that the diffuser is directed upwards.

[0042] According to the invention, thanks to the hook located on the underside of the base module, the work lamp can then be suspended at a height, for example from the ceiling, and thus serve as lighting for an interior space.

[0043] The hook can in particular be placed on a second housing for the diffuser.

[0044] Preferably, the hook is inserted into a recess in the housing and can be pivoted outwards. Brief description of the drawings

[0045] The object of the invention will be explained in more detail below, with reference to the drawings in Figures 1 to 7, by reference to an example of an embodiment.

[0046] Figures 1 to 3 are perspective views of an example of an embodiment of a work lamp according to the invention.

[0047] Fig. 4 is a perspective view of the work lamp with the diffuser removed.

[0048] Figure 5 is a view of the semiconductor light source, the lens and the lens fixing methods.

[0049] Fig. 6 is an exploded view of the work lamp.

[0050] Figure 7 is a perspective view of the work lamp with the diffuser now inserted into the second housing. Detailed description of the drawings

[0051] Fig. 1 shows, in a perspective view, an example of an embodiment of a work lamp 1 according to the invention.

[0052] The work lamp 1 includes a housing 10 which has a compartment 11 into which a diffuser 40 is inserted removably, in particular by means of a bayonet closure.

[0053] The diffuser 40 is designed as a hollow body. In this embodiment, the cross-section of the diffuser 40 narrows towards the housing 10.

[0054] The cross-section of the diffuser 40 passes, starting from the housing 11, from a round section to a non-round section, in particular a square one.

[0055] The diffuser 40 can occupy a volume of 500 to 3000 cm3, in particular 1000 to 2000 cm3. The diffuser 40 can have a length between 3 and 20 cm, in particular between 5 and 15 cm.

[0056] This facilitates the insertion of the diffuser 40 into the bayonet closure, since the angular configuration of the diffuser 40 allows it to be inserted diagonally into the bayonet and locked by rotation in the position defined by the edges as illustrated here.

[0057] In this illustration, the work lamp 1 is oriented to be placed on the floor.

[0058] In this case, the diffuser 40 oriented towards the side defines a front face of the lamp Task 1.

[0059] The housing 10 is equipped with a handle 12 which, in the position shown here with the diffuser 40 oriented laterally, protrudes upwards out of the housing 10.

[0060] The work lamp 1 includes a basic module 30 with, in this embodiment, four feet 33, on which the work lamp 1 can be installed.

[0061] The basic module 30 comprises two longitudinal members 32a, 32b, which are connected to each other by a cross member 31.

[0062] The feet 33 are in the form of caps, preferably made of plastic, which are fitted onto the stringers 32a, 32b.

[0063] A U-shaped or stirrup-shaped support 20, on which the housing 10 is pivotally mounted, is fixed to the cross member 31 of the base module 30.

[0064] The pivot axis 2 extends perpendicularly to a central axis of the diffuser 40.

[0065] In this embodiment, the pivot axis 2 is arranged above an axis central of the housing 10 in the transverse direction.

[0066] After loosening an operating member, in particular a knurled screw or a knurled nut, the housing 10 with the diffuser 40 can be pivoted into a position in which the diffuser 40 is oriented upwards.

[0067] The work lamp 1 can then be suspended high up in an inverted position for lighting an interior space.

[0068] Furthermore, the support 20 can be rotated about the rotation axis 3, which is vertically aligned with the base module 30. Thus, the housing 10 with the diffuser 40 can be rotated to the right and to the left. This is also achieved by loosening an operating element, in particular a knurled screw or a knurled nut.

[0069] Fig. 2 is a perspective view of the work lamp 10 from the rear.

[0070] The case 10 is equipped with cooling fins at the rear.

[0071] In this embodiment, it is a mains-powered work lamp 1, which can be connected to a power outlet on site by the connecting cable 14.

[0072] At the rear of the housing is a power outlet 13 to which consumers, in particular tools, can be connected. The work light 1 can be switched on and off via the switch 15, which is located at the rear of the housing 10 in this embodiment. According to one embodiment, the switch 15 is provided to have at least two switching positions for different light intensities.

[0073] A support 50 for the diffuser is arranged at the rear, separately from the housing 10, and can be used when the diffuser 40 is not intended to serve as a lamp for an interior space.

[0074] The support 50 includes a second housing 51, made in bayonet form, for the diffuser 40. A mark 56 facilitates the insertion of the diffuser 40, which is then locked by a rotational movement.

[0075] The housing 50 includes two arms 52 projecting laterally, through which the support 50 is slid onto the longitudinal members 32a, 32b.

[0076] Fig. 3 is a perspective view of the work lamp 1 seen from below.

[0077] On the underside of the support 50, inserted into a recess 54, there is a hook 53.

[0078] The hook 53 is pivotally mounted in a bearing 55 and can be moved out of the position shown here by pivoting.

[0079] To rotate the hook 53 outwards, the user can grasp the gripping hole 57 and exert leverage on the hook 53 to extract it.

[0080] The work lamp 1 can then be suspended in an inverted position. In this case, the diffuser 40 will be rotated 90° with the housing 10 relative to the position shown here, so that the diffuser 40 is oriented downwards in its inverted, elevated position.

[0081] Fig. 4 is a perspective view of the work lamp 1 with the diffuser removed.

[0082] In front of the light source, which is arranged in the housing 10, there is a lens convergent 60 which, in this embodiment example, is fixed by means of a ring 11 mounted on the housing 10.

[0083] As illustrated here, the work lamp 1 can be used as a spotlight projector, the light emitted by the light source being focused by the converging lens 60.

[0084] The reference mark 19 facilitates the insertion of the diffuser into the bayonet of the housing 11 at the correct angle.

[0085] Fig. 5 is a perspective view of the components arranged in the housing to generate the light from the work lamp.

[0086] The light source used is a semiconductor light source 4 which, in this embodiment, is in the form of an LED array comprising a plurality of LEDs on a printed circuit board.

[0087] In this embodiment, the semiconductor light source 4 is circular in shape.

[0088] A truncated conical reflector 16 extends around the semiconductor light source 4 and further focuses the light.

[0089] The reflector 16 can be part of a plate inserted into the housing.

[0090] The reflector 16 may in particular be a stamped metal component or a component made of plastic material with a reflective coating.

[0091] The converging lens 16 is fixed to the reflector 16 by means of a ring 11 which includes the bayonet housing for the diffuser.

[0092] Preferably, the converging lens 60 is convex only on its front face. The rear face is preferably flat, which allows for a more compact design.

[0093] To be fixed by means of the ring 11, the converging lens 60 has a lateral collar 61 which, once mounted, constitutes a formal coupling element with the ring 11.

[0094] Fig. 6 is an exploded view of the work lamp 1.

[0095] The housing comprises an upper part 17 and a lower part 18 which is provided with cooling fins.

[0096] The housing contains in particular the component with the reflector 16.

[0097] The converging lens 60 is fixed to the upper part 17 by the housing 11.

[0098] At the rear, the diffuser 40 has a bayonet 41 intended to be inserted into the accommodation 11.

[0099] Fig. 7 is a view of the work lamp 1, with the diffuser 40 now inserted into the rear housing 51 of the support 50.

[0100] The diffuser 40 is located, at least in places, between the longitudinal members 32a, 32b and is thus protected against damage.

[0101] The work lamp 1 can thus be used as a spot projector, the diffuser 40 being at the same time connected in a non-removable way to the rest of the lamp.

[0102] The invention has made it possible to provide a work lamp with improved functionality. List of reference signs

[0103] 1 Work lamp

[0104] 2 Pivot axis

[0105] 3 Axis of rotation

[0106] 4 Semiconductor light source

[0107] 10 Case

[0108] 11 First dwelling

[0109] 12 Handle

[0110] 13 Power outlet [YES] 14 Connection cable

[0112] 15 Switch

[0113] 16 Reflector

[0114] 17 Upper part of the housing

[0115] 18 Lower part of the housing

[0116] 20 Support

[0117] 30 Basic Module

[0118] 31 Traverse

[0119] 32a, 32b Longers

[0120] 33 Feet

[0121] 40 Diffuser

[0122] 41 Bayonet

[0123] 50 Support

[0124] 51 Second dwelling

[0125] 52 Arms

[0126] 53 Hook

[0127] 54 Obviously

[0128] 55th Floor

[0129] 56 Reference

[0130] 57 Gripping hole

[0131] 60 Converging lens

[0132] 61 Collar

Claims

Demands

1. Work lamp (1), comprising a semiconductor light source (4), a converging lens (60) being disposed in front of the semiconductor light source (4), and a removable diffuser (40), designed as a hollow body, being disposed in front of the converging lens (60), and the work lamp (1) comprising a housing pivotally articulated on a U-shaped support (20), the support (20) being disposed on a base module (30).

2. Work lamp (1) according to the preceding claim, characterized in that the diffuser (40) is fixed by means of a bayonet closure (41).

3. Work lamp (1) according to any one of the preceding claims, characterized in that a conical reflector (16), in particular frustoconical, is arranged around the semiconductor light source (4).

4. Work lamp (1) according to any one of the preceding claims, characterized in that the housing is pivotable relative to the support (20) by at least 90°.

5. Work lamp (1) according to the preceding claim, characterized in that the support (20) is rotatable on the base module (30) around an axis extending perpendicularly to the pivot axis.

6. Work lamp (1) comprising a semiconductor light source (4), a removable diffuser (40) designed as a hollow body being disposed in front of the semiconductor light source (4) in a first housing (11), the work lamp having a second housing (51) for the diffuser (40).

7. Work lamp (1) according to the preceding claim, characterized in that the first housing (11) is arranged on a front side and the second housing (51) on a rear side of the work lamp (1).

8. Work lamp (1) according to one of the two preceding claims, characterized in that the second housing (51) is disposed on a support (50) which is disposed separately from a housing of the work lamp (1) on the rails of a base module (30).

9. Work lamp (1) comprising a semiconductor light source (4), a removable diffuser (40) designed as a hollow body being disposed in front of the semiconductor light source (4), the work lamp (1) comprising a housing that can pivot on a support (20) around an axis extending perpendicularly to the central axis of the diffuser (40), the support (20) being disposed on a base module (30), and a hook (53) for suspending the work lamp (1) being disposed on the base module (30), so that the work lamp (1) can be suspended high up in an inverted position, the diffuser (40) being oriented downwards in this position.

10. Work lamp (1) according to the preceding claim, characterized in that the hook (53) is disposed on a second housing (51) for the diffuser (40).

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