Illumination – Light source and modifier – Louvered or grid type modifier
Patent
1997-05-06
1999-07-13
Cariaso, Alan
Illumination
Light source and modifier
Louvered or grid type modifier
362354, 362440, 362442, F21V 1310
Patent
active
059216620
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to an attachment for general-diffuse miniature reflectors which contain an illuminating means. The miniature reflector and the illuminating means form an integral unit. The reflector diameter spans a few centimeters. The illuminating means is usually a low-voltage halogen lamp. At its reaar the reflector has a socket with connection elements to a lamp mount, for instance in the form of a plug-in connection.
BACKGROUND OF THE INVENTION
Miniature reflectors of the described kind are used for home lighting, and commercially for the illumination of product displays, store windows and the like also as so-called general-diffuse reflectors, i.e. without an external housing. The attachment to which the invention relates is meant to limit the light emission, so that glare can be avoided, to mask certain areas for design purposes, and the like.
Light-guiding attachments for lamps are known. Within the known framework it is possible to work with attachment holders wherein filter screens, lenses, grids, foils, rasters, flaps and diaphragms can be inserted as desired. The known attachment holders can be fastened to the housing of lamps, are made of several parts and their construction is costly. As a rule they are used only in professional and semiprofessional lamps. The known attachments are not suitable for use on the general-diffuse miniature reflectors.
OBJECTS OF THE INVENTION
It is the object of the invention to provide an attachment for general-diffuse miniature reflectors which can be mounted directly to the miniature reflector and can be easily exchanged.
SUMMARY OF THE INVENTION
The object of the invention and the solution to the problem is an attachment which is characterized by engaging behind the reflector rim, and element, for influencing the emergence of light from the miniature reflector. are components of an integral attachment element formed in one piece. The attachment is made of a temperature resistant, non-elastic but flexible material and is held by its clamping element in a positive lock on the reflector rim. All functional elements (holding clamps, hinges, lamellae, flaps) are formed from the component itself. Preferably the attachment is made of stainless spring steel sheet as a stamped and bent part and provided with a dull black surface coating.
The attachment of the invention can be produced with a very low weight, so that the usual connections between the miniature reflector and the lamp socket can easily take up the additional weight. As a rule the weight of the attachment is always lower than the weight of the reflector with illuminating means.
The attachment of the invention is cost effective, functionally safe and easy to handle. It can be mounted and removed without special skills and without tools. The cleaning is simple. The low cost has a positive effect when it is purchased, as well as when it is damaged or lost. The attachment of the invention is also suitable for an easy retrofitting of general-diffuse miniature reflectors.
According to a preferred embodiment, the support element is a support ring on which angularly bent-off clamping elements are integrally formed. Suitably the clamping elements are shaped as handles engaging behind a ring segment of the reflector rim. A particularly simple and secure engagement results especially then when the handles are curved and at their connection strips are provided with projections pointing towards the underside of the reflector rim.
There are many design possibilities regarding the light-deflection elements. Of particular importance are light flaps for the masking of certain areas for reasons of design, as well as light-deflecting lamellae for glare avoidance. In a further development the invention teaches that at least two light flaps are connected by bendable strips to the support ring or that light-deflecting lamellae are connected to the support ring, whereby the light-deflecting lamellae are connected with the support ring by strips and are perpendicularly bent off with respect
REFERENCES:
patent: 921449 (1909-05-01), Penney
patent: 1562186 (1925-11-01), Powell et al.
patent: 2021790 (1935-11-01), Kuhn
patent: 2437522 (1948-03-01), Handler
patent: 4833579 (1989-05-01), Skegin
patent: 4899263 (1990-02-01), Lupoli et al.
patent: 5249111 (1993-09-01), Richardson
Bruckner Attila Anton
Schroter Gerd
Cariaso Alan
Dubno Herbert
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