Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
  • F21V17/04—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the light source
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V7/00—Reflectors for light sources
  • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources

Definitions

• This invention relates to a reflector system for sec ⁇ uring to a light source as presented in the introduc- tion of claim 1.
• Reflectors for lighting purposes are most often man ⁇ ufactured of anodized aluminium plate and are secured to the light fitting, in that the reflectors are nor- mally produced especially for use in connection with the individual types of fittings.
• Reflectors for mounting directly on to fluorescent tubes are known, for example executed in plastic mat ⁇ erials and provided with various means of reflection. It is, however, more expedient to produce the reflec ⁇ tor of anodized pure aluminium, the reason being that this material is more robust and stable in shape and, furthermore, its reflecting characteristics are more durable.
• the actual cross-sectional curve of the reflector which does not form a direct part of the present in ⁇ vention, conforms mainly to that shape known, for ex ⁇ ample, from British patent no. 884,068, the lower part of the reflector cross-sectional curve turning downwards to form a light output aperture which stron ⁇ gly reduces the light intensity immediately outside an angle which is desired to limit the transmission of light transversely to the fitting.
• the shape of this part of the reflector cross section is known from ... textbooks and from pending Danish patent application no. 5775/76.
• Reflectors of the above-mentioned shape are difficult to mount in existing fittings which do not already have reflectors, and on completely freely-disposed fluorescent tubes.
• the object of the invention is to provide a reflector system consisting of a reflector of the correct shape, for example of anodized aluminium plate, which is cheap to produce, and also to provide securing elem ⁇ ents which are similarly simple and thus also cheap to produce. Moreover, with lighting installations, it is important that after having been fitted with re ⁇ flectors that the installation.maintains a reasonable aesthetic standard, and at the same time that the re ⁇ flector system is simple and quick to mount.
• the light source is of the type which sits in a fitting
• one can utilize a flat sur ⁇ face in the fitting so that the reflector sits cor ⁇ rectly in relation to the light source, and at the same time it will be correctly positioned in relation to the fitting and the direction of illumination. This is effected in an expedient manner by designing the securing element for the reflector system as pre ⁇ sented, in claim 2.
• the reflector system according to claim 3 can be used r in that here, it is secured exclusively on the light source.
• the res ⁇ ult is that the securing element clamps tightly around the fluorescent tube and, in this manner, tightly se ⁇ cures the reflector.
• the securing element is provided with gripper recesses, whereby a well-de-
• OMPI fined friction is achieved between the strap of the securing element and the fluorescent tube it sur- ... " rounds.
• fig. 1 shows a reflector system according to the invention in an embodiment intended • for securing directly on to a fluorescent tube
• fig. 2 shows a securing element for the reflec ⁇ tor system shown in fig. 1,
• fig. 3 shows a reflector system according to the invention in an embodiment intended for securing to a fluorescent tube moun ⁇ ted in a fitting
• fig. 4 shows a securing element for the reflec ⁇ tor system shown in fig. 3.
• a reflec- tor system intended for mounting directly on, for ex ⁇ ample, a fluorescent tube which sits .freely mounted,., for example on a wall or a ceiling, or externally on a fitting.
• One or more securing elements surround the fluorescent tube and are secured to the reflector 4 in assembly holes 8.
• the assembly hole 8 also called the gripping hole, is formed and positioned in the reflec ⁇ tor's lengthwise central axis and is shown in detail in the segment drawing 10 in the circle above fig. 1 itself.
• the securing element 1 has gripping recesses 13 at the ends at which the securing element is bent, thus enabling it to be secured in the assembly hole 8 as shown in fig. 1.
• the securing element surrounds the fluorescent tube 5 with sufficient friction to secure the reflector 4 in a certain position. This friction, however, is no greater than one can turn the reflector 4 if this has been placed in a slightly crooked manner on the light source. Together with that part of the securing element which surrounds the light source, it is the bent ends la which at point 12 have flexible connection with the light source which provide the necessary friction.
• the bent ends of the securing el ⁇ ement, see fig. 2 reach right in and support against that part of the securing element which lies as a tan- gent to the fluorescent tube, see fig. 1.
• a second embodiment of the invention is shown as seen directly from the one end of the fluor ⁇ escent tube.
• the reflector 4 is secured by a securing element 2, see fig. 4, which surrounds the light source 5 and passes through a hole in the re ⁇ flector.
• the reflector is held firmly in the gripping recesses 13 in the securing element 2 which bears against the fitting 9 at.points 7.
• the securing element substantially surrounds the light source so that there is no friction against the light source, in that the reflector 4 will Of course..always sit in the correct position.
• OMPI are influenced in such a way that they slide slightly away from each other.
• the pressure with which the re ⁇ flector 4 and the securing element 2 lie up against the fluorescent tube is determined by the moment which arises due to the flexible contact of the quite long and springy ends against the fitting.
• the reflectors 4 used in the embodiments shown in both fig. 1 and fig. 3 are the same, in that the holes pro- vided in the reflector 4 are of such a shape that the gripping recess 13 in the securing element 1 or 2 en ⁇ gages in the holes 8.
• the securing elements as shown in figs. 2 and 4 are also essentially the same, their bent ends la and 2a merely being bent differently.
• the length of the securing element naturally depends on the type of light source on which the reflector is to be mounted.
• the securing element is normally made of metal, for example thin metal plate of spring steel, but other flexible materials can also be used.
• the reflector system according to the invention can be used on other types of elongated light sources.
• the reflector 4 can also be of.other expedient ⁇ shapes. It merely needs to be provided with suitable holes so that it can be secured by the gripping recesses 13 in the securing elements.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Securing Globes, Refractors, Reflectors Or The Like (AREA)
• Fastening Of Light Sources Or Lamp Holders (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8123746

Family Applications (1)

Country Status (5)

Cited By (2)

Families Citing this family (30)

Citations (3)

Family Cites Families (12)

• 1981
  • 1981-08-07 DK DK351181A patent/DK147803C/da not_active IP Right Cessation
  • 1981-12-13 US US06/531,833 patent/US4514793A/en not_active Expired - Fee Related
• 1982
  • 1982-12-13 DE DE8383900021T patent/DE3275655D1/de not_active Expired
  • 1982-12-13 WO PCT/DK1982/000111 patent/WO1983002145A1/en not_active Ceased
  • 1982-12-13 EP EP83900021A patent/EP0097186B1/en not_active Expired

Patent Citations (3)

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