Lighting-fitting comprising a filter device to remove smoke components of cigars and cigarettes

Abstract: In a lighting-fitting comprising a socket-structure for an electrical lamp and a filter device to remove smoke components of cigars and cigarettes, which device is provided with an electrical blower (6) and at least one smoke filter (3,4), the socket-structure is housed within a first hood (1), which is placed within a larger second hood (2), such that a space between said first and second hood forming a smoke channel (7, 7′) extending to the filter device is defined. Furthermore, the socket-structure is designed for at least one TL-tube, while the smoke filters (3,4) are located within the second hood (2) over the top of the first hood (1), and the first hood (1) can easily be assembled and disassembled relative to the second hood (2). In a preferred embodiment, the space between said first (1) and said second hood (2) defines an exhaust channel (12) extending from the filter device, to exhaust filtered air. Furthermore, the feeding openings (8, 8′) and the exhaust openings (13) of the smoke channel (7, 7′) at the exhaust channel (12) respectively extend in lengthwise direction on both sides of the first hood (1). The feeding openings (8,8′) and said exhaust openings (13) can be defined by a slit with varying width between the first (1) and the second hood (2). To easily assemble and disassemble the first hood (1) relative to the second hood (2), the first (1) can be pivotably mounted within the second hood (2).

Description: The invention relates to a lighting-fitting according to the preamble of claim 1. Such a lighting-fitting is known from NL-A-8800812. This known lighting-fitting is adapted to house a bulb-type lamp. This lamp is housed within a hood with small dimensions which is placed within a larged hood, such that smoke channels are formed between the inner and outer hood. Within the outer hood, on top of the inner hood, a filter device is provided, carrying a driven fan. The outer hood is designed such that it is intended to suspend from a sealing. This known device of the combination of a lighting-fitting and a filtering device has disadvantages. More precise, this device cannot readily be used in rooms, such as conference rooms, in which the lighting-fittings are incorporated in the sealing. In those spaces which are used intensively and in which people are often smoking, it can be expected that the filter components must be replaced often. This replacement has to be carried out as efficiently as possible. Also, these spaces are to a large extent illuminated by so-called TL-lighting. The prior art device shows a general combination of a lighting-fitting comprising a filter device to remove smoke components of cigars and cigarettes, and does not show the specific provisions needed to solve the above-mentioned problems. It is an object of the invention to modify the present device such that this can effectively be incorporated in ceilings of rooms which are illuminated by TL-lighting to a large extent, whereby the filter can be replaced efficiently. According to the present invention, the lighting-fitting of the above-mentioned type is characterized by the features of the characterizing part of claim 1. This assures that the filters are readily accessible for efficient replacement and that the device is readily available for conference rooms etc.. For compactness of the device and for easy accessibility, the electrical blower is mounted within the space between the first and the second hood. A convenient embodiment of the lighting-fitting according to the invention can easily be placed on sections used for the so-called "system" ceiling constructions. A fitting of this type can be suitable both to build in as well as to build up. To replace the filters and/or the blower efficiently, the hood that comprises the socket has a design such that this can easily be assembled and disassembled. This is obtained by connecting this hood hingedly to the larger hood. Furthermore, the lighting-fitting can be provided with at least one switch to switch on or off the power for the blower and for the socket or any other lamp independently. This feature enhances the usefulness of the device. To control the amount of air that is filtered within a period of time, the switch of the blower preferably comprises several positions correlating with a different number of revolutions. In the following, the present invention will be described in details with reference to the drawings schematically showing an embodiment. Fig. 1 shows a perspective view of a lighting-fitting. The arrangement of the filters and fan do not form part of the present invention, Fig. 2 shows a cross-sectional view of an embodiment of the present invention, ready for use, Fig. 3 shows in the same view the embodiment of fig.2 during maintenance. Merely for a better understanding of fig 2 and 3 fig. 1 shows how a first hood 1 comprising two TL-tubes, is mounted within a larger second hood 2. A filter 3 for the removal of dust-particles and a carbon filter 4 are provided within the second hood 2 over the top of the first hood 1. The filters 3, 4 can in lengthwise direction of the second hood 2 exist of e.g. three elements with the same dimensions, such that replacement of the filters 3, 4 is easy. The filters 3, 4 can be fixed within the second hood by e.g. Velcro-tape. It should also be possible to place the individual components of filters 3, 4 into a simple frame, which can be suspended in the second hood 2 by e.g. resilient palls. It is evident, that the filters 3, 4 can also be made from other materials, and can be e.g. a resin filter, and/or an electronic filter cell, or an ionisation filter, etc. In the embodiment shown in fig. 1, the suck-out opening 5 is provided in the top of the second hood 2 halfway the length of it. The blower 6 sucks the air through this opening 5. The space 7, 7' between the hoods 1, 2 forms a smoke channel which extends to the filter device. The openings 8, 8' of the smoke channel extend in lengthwise direction of the first hood 1 on both sides of it. Depending for instance on the shape and the type of the filters 3, 4 and the position of the suck-out opening 5, the openings 8, 8' can be defined by a slit between the first 1 and the second hood 2 with varying width. The shape of this slit assures an even suck-out over the length of the lighting-fitting. In the embodiment shown, the openings 8, 8' are shaped by a slit with the smallest width in the neighbourhood of the suck-out opening 5, while the width increases towards the ends. Other slit shapes can be necessary when for instance the position of the suck-out opening is changed, or if for instance the second hood 2 is provided with several suck-out openings. "9" refers to the supporting sections of the ceiling panels 10. The edges of the second hood 2 are supported by these ceiling sections 9 according to this embodiment. The air to be cleaned from smoke components of cigars and cigarettes, that is located under the sealing, flows by the activated blower 6 via the openings 8, 8' into the smoke channels 7, 7'. The air is then cleaned in the filters 3, 4, after which the cleaned air is led back to the space under the ceiling, e.g. by a system of channels. Fig. 2 shows an embodiment of the present invention, wherein the electrical blower 6 is housed within the second hood 2. This blower 6 extends in lengthwise direction along the second hood 2. Also, the space between said first 1 and said second hood 2 defines an exhaust channel 12 extending from the filter device, to exhaust filtered air. This channel 12 ends at the exhaust opening 13, which extends in lengthwise direction along the first hood 1. The exhaust opening 13 is defined by a slit with varying width between the first 1 and the second hood 2. The filters 3, 4 are inclined relative to the horizontal, to increase the filtering surface. The first hood 1 is pivotably mounted at 11 within the second hood 2. Quick-lock fasteners 14 hold the first hood 1 in position. Fig. 3 shows the embodiment of fig. 2 in a maintenance situation, wherein the first hood 1 is pivoted around support 11. In this situation the filters 3, 4 and the electrical blower 6 are easily accessible in the direction of the arrow A and B respectivily. It will be appreciated that several modifications are possible within the scope of the present invention. Because nowadays the shape of TL-tubes is not exclusively straight, but can also be e.g. annular or spherical, the shape of the lighting-fitting according to the present invention is not restricted to rectangular, but can also be e.g. square or round. Subsequently, several combinations of shapes of smoke channel openings with type of filter and shape of filter and positions of suck-out openings are possible to obtain an even suck-out of air from the room below the fitting.

Claims: Lighting-fitting comprising a socket-structure for an electrical lamp and a filter device to remove smoke components of cigars and cigarettes provided with an electrical blower (6) and at least one smoke filter (3, 4), said socket-structure being housed within a first hood (1), which is placed within a larger second hood (2) such that a first space is defined between said first and second hood forming a smoke channel (7, 7') extending to the filter device from a feed opening (8), characterized in that the socket-structure is designed for at least one TL-tube, that a second space is defined between said first and said second hoods forming a clean air channel (12) extending from the filter device towards an exhaust opening (13) for exhausting filtered air from the filter device, that said feed opening (8) and said exhaust opening (13) extend in the longitudinal direction of the first and second hoods that the at least one smoke filter (3, 4) and said electrical blower (6) are located within the second hood (2) above said first hood (1), wherein said at least one smoke filter (3, 4) is located between said feed opening (8) and said electrical blower (6) viewed in flowing direction of the air through the channels (7, 7', 12) from the feed opening (8) towards the exhaust opening (13) and that said first hood (1) is pivotably movable at one longitudinal side relative to said second hood (2) so as to facilitate access to said at least one smoke filter (3, 4) after pivoting said first hood (1). Lighting-fitting according to claim 1, wherein, viewed in longitudinal direction of the hoods (1, 2), the at least one filter (3, 4) is provided at one side, and the electrical blower (6) is provided at the opposite side of this lighting-fitting. Lighting-fitting according to claim 1 or 2, wherein said at least one smoke filter (3, 4) is inclined with respect to the upper walls of said hoods (1, 2) viewed in the longitudinal direction thereof. Lighting-fitting according to any of the preceding claims, wherein said first hood (1) is pivotably movable (11) at the longitudinal side facing the at least one smoke filter (3, 4) viewed in longitudinal direction of the hoods (1, 2). Lighting-fitting according to any of the preceding claims, wherein the at least one smoke filter (3, 4) rests with one longitudinal side on the top of said first hood (1).

Inventors: HOEK WILHELMUS ADRIANUS HENDRI, HOEK, WILHELMUS ADRIANUS HENDRIKUS
Applicants: HOEK WILHELMUS ADRIANUS HENDRI, HOEK, WILHELMUS ADRIANUS HENDRIKUS
Application year: 1990
Main classification: F21V33
IPC codes: F21V33