Illumination – With static structure – Wall or ceiling
Patent
1999-05-13
2000-12-05
Sember, Thomas M.
Illumination
With static structure
Wall or ceiling
362217, 362368, F21S 102
Patent
active
061556939
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a light fitting and more particularly it concern a novel light fitting base body which provides improved mounting and holding supports.
2. Description of the Related Art
The main purpose of a light fitting, namely to illuminate a room can be assigned various aspects whereby different demands are made of the light fitting depending on the available lighting criteria.
If for example the room is merely to be brightly illuminated, it is sufficient to allocate the light fitting a direct lighting device which beams light into the room. If such a light fitting is to be at least partially anti-glare, then special measures are required to reduce the dazzling effect, at least in certain areas. For this purpose, a plurality of so-called light distributors have already been developed, including reflectors and special measures for reducing glare.
One of these measures can consist in providing the light fitting with a so-called reflector basket which is arranged underneath a lamp and reflects the light reaching it upwards against wing-shaped reflectors which are allocated shaped like wings on both sides of a base body of the light fitting and reflect the light into the room to be illuminated.
A light fitting of the type to which the present invention is applicable is described in EP 0 574 761 A1 which is assigned to the assignee of the subject application. In this known embodiment, the light fitting is formed as a trough light and a recessed light fitting. The base body in the form of a subbase for the reflector basket and the wing-shaped indirect reflectors are fixed to a lighting trough which is inserted into an available orifice in the ceiling and fixed to the ceiling by means of fixing means located on the edge of the installation orifice.
SUMMARY OF THE INVENTION
The invention is based on the problem of designing a light fitting of the type described above such that it can be manufactured more simply and at lower costs.
This problem is solved according to the present invention by means of novel base body having a trough-like space of generally triangular cross-section which is enclosed by two lateral body walls, the trough-like space being larger than an operating device which is arranged therein, and the lateral body walls converging toward and meeting with a flattened mounting surface to which add-on parts may be mounted. The base body is provided with a fastener by which the base body is mounted. In addition, the base body is provided with a lamp holder which is arranged on a side of the base body which faces the fastener.
In the light fitting according to one aspect of the invention, the base body performs a carrying function for the light fitting, with the fixing means engaging it directly. This embodiment allows a usual lighting housing to be omitted whereby not only material and weight but also the structural size and considerable production costs can be reduced. The light fitting according to the invention also has a stable construction because the incorporation of a lighting housing, as is the case in the known embodiment, reduces the stability of the light fitting. The embodiment according to the invention also permits a simple construction because the number of components of the light fitting can be reduced considerably as a result of the direct engagement of the fixing means to the base body.
The light fitting according to claim 2 of the invention is also advantageous for several reasons. For one thing, the base body itself forms a housing for the electric operating means or an operating device, e.g. a fluorescent lamp ballast of the light fitting so that the usual lighting housing can also be omitted and in this way the advantages described above can be achieved. For another thing, the fixing means do not have to engage the base body directly but can also engage the base body via particular add-on pieces. This embodiment also has a simple construction as special holding means for the operating device or the operating me
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patent: 4225905 (1980-09-01), Moriyama et al.
patent: 4814958 (1989-03-01), Hsieh
patent: 5521801 (1996-05-01), Pesau et al.
Keckeis Wolfgang
Spiegel Michael
Sember Thomas M.
Zumtobel Staff GmbH
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