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GB2352800A - Sealed shock-proof bulkhead lighting - Google Patents

Sealed shock-proof bulkhead lighting Download PDF

Info

Publication number
GB2352800A
GB2352800A GB9915389A GB9915389A GB2352800A GB 2352800 A GB2352800 A GB 2352800A GB 9915389 A GB9915389 A GB 9915389A GB 9915389 A GB9915389 A GB 9915389A GB 2352800 A GB2352800 A GB 2352800A
Authority
GB
United Kingdom
Prior art keywords
cover
luminaire according
body part
luminaire
lamps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9915389A
Other versions
GB9915389D0 (en
Inventor
Michael Rollin Burn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LIGHT YEARS AHEAD IPR Ltd
Original Assignee
LIGHT YEARS AHEAD IPR Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LIGHT YEARS AHEAD IPR Ltd filed Critical LIGHT YEARS AHEAD IPR Ltd
Priority to GB9915389A priority Critical patent/GB2352800A/en
Publication of GB9915389D0 publication Critical patent/GB9915389D0/en
Publication of GB2352800A publication Critical patent/GB2352800A/en
Withdrawn legal-status Critical Current

Links

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
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/04—Resilient mountings, e.g. shock absorbers 
    • 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
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

A wall mountable luminaire 11 comprises body 13 for holding lamps (26, figs. 3 and 4) with an aperture 16 for electric cables having a rear face 15 securable to a surface 12 and light transmissive cover 18 with a rim 19 which surrounds body 13 and is secured against surface 12. Cover 18 is preferably smooth and directs impact forces directly to surface 12 rather than indirectly through body 13. Cover 18 is preferably a lens refractor made of polycarbonate and is attached to body 13 by security bolts 22a which engage nuts 22d. Bolts 22a are preferably recessed in cover 18 and closed by transparent plugs 24. Rubber buffers 17c, 22e may be used to aid impact resistance. Rim 19 is preferably provided with seal 19a. Lamps (26) are preferably strip lights, each having a reflector (25). Reflectors (25) can be concave mirrors, cylindrical, adjacent each other (fig. 3) or back-to-back (fig. 4). Luminaire 11 may have a dimmer switch 28.

Description

2352800 LUMINAIRES This invention relates to luminaires, particularly to
luminaires adapted f r surface, e.g. wall mounting. Particularly when intended for external use, such luminaires are sometimes referred to as "bulkbead7' lighting. Particularly, again, for external use, it is desirable that luminaires be robust to withstand accidental or deliberate impact damage, and, of course, sealed to protect the inner workings against the elements.
Conventional bulkhead lighting comprises a body part comprising larnpholder means and having a rear face with aperturing for cable entry and for securing means for securing the body part with its rear face against the mounting surface, and a cover for the lampholder means which is secured with a seal against the body part.
Though made of tough glass, plastic and or metal, conventional bulkhead luminaires are, by their design, prone to accidental or deliberate damage, and this can expose live electrical parts, which can be a personal or a fire hazard.
The present invention provides a luminaire having improved safety features as compared to conventional bulkhead lighting.
The invention comprises a luminaire adapted for surface mounting comprising a body part comprising lampholder means and having a rear face with aperturing for cable entry and for securing means for securing the body part with its rear face against the surface, and a cover having a rear rim, which surrounds the body part and is securable against the surface, and a light-transmissive front face.
The cover may be securable to the surface by fasteners securing it to the body part, and may be securable by fasteners recessed from the front face. Fastener recessing in the front face may be closed by plug means, which may be lighttransmitting.
The cover may comprise lensed refractor means.
The rear face of the cover may be provided with a seal.
The body part may comprise reflector means directing light from lamps in the lampholder means through the cover. The reflector means may comprise concave mirrors. The lampholder means may be arranged for strip lighting, e.g. fluorescent lighting, the concave mirrors then being cylindrical. Two concave mirrors may be situated adjacent, the one against the other, and the lamps so disposed that their beams form a flood, or the concave mirrors may be situated back to back and the lamps so disposed as to cast two separate beams in opposite directions.
The cover may be impact-resistant and may be made, for example, of polycarbonate, possibly with a thickness of 5mm, which will resist shattering by missiles such as bricks and by hammer blows.
The cover may transmit impact forces directly to the mounting surface rather than indirectly through the body part which, with the lamps, reflectors and electronics for driving e.g. fluorescent lamps, will be thereby protected.
The cover may have a smooth profile offering no hanging facility, and in this regard may have, when mounted, no upwardly-directed horizontal part. The cover may meet the mounting surface at an obtuse angle.
Embodiments of luminaires according to the invention will now be described with reference to the accompanying drawings, in which:
Figure I is an exploded view of a first embodiment; Figure 2 is a view of the embodiment of Figure 1, mounted; Figure 3 is a cross-section through the reflector arrangement of the embodiment of Figure 1; and Figure 4 is a cross-section like Figure 3 of another embodiment.
The drawings illustrate luminaires 11 adapted for mounting on a wall 12 comprising a body part 13 comprising lampholder means 14 and having a rear face 15 with aperturing 16 for cable entry and for securing means 17 for securing the body part 13 with its rear face against the surface of the wall 13, and a cover 18 having a rear rim.19, which surrounds the body part 13 and is securable against the surface of the wall 12, and a light-transmissive front face 2 1.
The securing means 17 comprise screws 17a with washers l7b and rear face rubber buffers 17c, with plugs 17d for holes drilled into the wall 12.
The cover 18 is secured against the wall 12 by fasteners 22 securing it to the body part 13. The fasteners 22 comprise bolts 22a with washers 22b engaging apertured flanges 22c on the cover 18 and nuts 22d with rubber buffers 22e on the back face of the body part 13. The flanges 22c are moulded with the cover 18 in recesses 23 which are, after mounting, closed by plugs 24 shaped to present a surface flush with that of the cover 18. The bolts 22a can be security bolts.
The cover 18 comprises a moulded lensed refractor arrangement - the plugs 24 can be moulded of a light transmitting material.
The rear rim 19 is fitted with a rubber seal 19a, which seals directly to the wall and affords complete protection for the body part 13 and its electrical components, as well as being a buffer against impact loadings on the cover 18. The buffers 17c and 22e cushion the body part 13 against impact loadings on the cover 18, which pass directly to the wall 12 rather than through the body part 13, as is the case in conventional bulkhead fittings.
The body part 13 can be of cast aluminium, for example and comprise reflector means 25 directing light from lamps 26 in the lampholder means 14. Fluorescent strip lamps 26 are illustrated, the body part 13 having a compartment 27 for electronic ballast for the lamps 26, which affords radio shielding therefor. The reflector means 25 are part of the casting but are provided with a specular reflecting surface e.g. by means of a snap-in foil.
As is best seen in Figures 3 and 4, the'reflector means 25 comprise cylindrical concave mirrors. Figure 3 shows two concave mirrors situated adjacent, the one against the other, the lamps 26 being so disposed that their beams form a flood. Figure 4 illustrates back-to-back mirrors giving uplighting and downlighting.
The cover 18 (and the plugs 24) is made of impact-resistant polycarbonate, 5mm thick, and has a smooth profile affording no hanging facility, having, to that end, no upwardly-directed surface when mounted, the cover meeting the surface of the wall 12 at an obtuse angle A, Figure 3. Conventional bulkhead lighting has an exposed body part, the cover attaching to the front of the body part, which then affords a hanging facility to which loads might be attached which break the body part or wrench it from the wall. It is not unknown for suicide cases to hang a noose from a conventional bulkhead light - this cannot be done with the embodiments illustrated, making the luminaires ideal for use in prisons and hospitals, for example.
A switch 28, which could be a dimmer switch, is mounted in a compartment 29 in the body part 13, accessible via a diaphragm 31 in the cover 18.

Claims (18)

1. A luminaire adapted for surface mounting comprising a body part comprising lampholder means and having a rear face with aperturing for cable entry and for securing means for securing the body part with its rear face against the surface, and a cover having a rear rim, which surrounds the body part and is securable against the surface, and a light-transmissive front face.
2. A luminaire according to claim 1, in which the cover is securable against the surface by fasteners securing it to the body part.
3. A luminaire according to claim 1 or claim 2, in which the cover is securable by fasteners recessed from the front face.
4. A luminaire according to claim 3, in which fastener recessing in the front face is closed by plug means.
5. A luminaire according to claim 4, in which the plug means are lighttransmitting.
6. A luminaire according to any one of claims I to 5, in which the cover comprises lensed refractor means.
7. A luminaire according to any one of claims I to 6, in which the rear rim of the cover is provided with a seal.
8. A luminaire according to any one of claims I to 7, in which the body part comprises reflector means directing light from lamps in the lampholder means through the cover.
9. A luminaire according to claim 8, in which the reflector means comprise concave mirrors -
10. A luminaire according to claim 9, in which the lampholder means are adapted for strip lighting and the concave mirrors are cylindrical.
11. A luminaire according to claim 8 or claim 9, in which two concave mirrors are situated adjacent the one against the other, and the lamps are so disposed that their beams form a flood.
12. A luminaire according to claim 8 or claim 9, in which the concave mirrors are situated back to back and the lamps are so disposed as to cast two separate beams in opposite directions.
13. A luminaire according to any one of claims 1 to 12, in which the cover is impact-resistant.
14. A luminaire according to claim 13, in which the cover is made of polycarbonate.
15. A luminaire according to any one of claims I to 14, in which the cover transmits impact forces directly to the mounting surface rather than indirectly through the body pa A.
16. A luminaire according to any one of claims I to 15, in which the cover has a smooth profile affording no hanging facility.
17. A luminaire according to claim 16, the cover having, when mounted, no upwardly-directed horizontal part.
18. A luminaire according to any one of claims I to 17, the cover meeting the mounting surface at an obtuse angle.
GB9915389A 1999-07-01 1999-07-01 Sealed shock-proof bulkhead lighting Withdrawn GB2352800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9915389A GB2352800A (en) 1999-07-01 1999-07-01 Sealed shock-proof bulkhead lighting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9915389A GB2352800A (en) 1999-07-01 1999-07-01 Sealed shock-proof bulkhead lighting

Publications (2)

Publication Number Publication Date
GB9915389D0 GB9915389D0 (en) 1999-09-01
GB2352800A true GB2352800A (en) 2001-02-07

Family

ID=10856422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9915389A Withdrawn GB2352800A (en) 1999-07-01 1999-07-01 Sealed shock-proof bulkhead lighting

Country Status (1)

Country Link
GB (1) GB2352800A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025780A (en) * 1976-05-20 1977-05-24 Kenall Manufacturing Company Fluorescent light fixture
US4071749A (en) * 1976-07-22 1978-01-31 Tork, Inc. Self-contained maintenance-free emergency lighting
US4827386A (en) * 1988-07-08 1989-05-02 Kenall Manufacturing Co. Water-proof and impact-resistant lighting fixture
GB2292212A (en) * 1994-08-11 1996-02-14 Jsb Electrical Plc Luminaires
FR2727743A1 (en) * 1994-12-02 1996-06-07 Clement Prat Sealed vandal-proof bulkhead light fitting for outdoor use

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025780A (en) * 1976-05-20 1977-05-24 Kenall Manufacturing Company Fluorescent light fixture
US4071749A (en) * 1976-07-22 1978-01-31 Tork, Inc. Self-contained maintenance-free emergency lighting
US4827386A (en) * 1988-07-08 1989-05-02 Kenall Manufacturing Co. Water-proof and impact-resistant lighting fixture
GB2292212A (en) * 1994-08-11 1996-02-14 Jsb Electrical Plc Luminaires
FR2727743A1 (en) * 1994-12-02 1996-06-07 Clement Prat Sealed vandal-proof bulkhead light fitting for outdoor use

Also Published As

Publication number Publication date
GB9915389D0 (en) 1999-09-01

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)