US3681591A - Light fixture for a storage aisle - Google Patents
Light fixture for a storage aisle Download PDFInfo
- Publication number
- US3681591A US3681591A US104040A US3681591DA US3681591A US 3681591 A US3681591 A US 3681591A US 104040 A US104040 A US 104040A US 3681591D A US3681591D A US 3681591DA US 3681591 A US3681591 A US 3681591A
- Authority
- US
- United States
- Prior art keywords
- light
- refractor
- reflector
- aisle
- light source
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
Definitions
- ABSTRACT Light fixture for a storage aisle particularly a warehouse aisle.
- a lamp is provided with a reflector generally overlying it and wrapped around two sides of the lamp region.
- light diffusing'luminaires providing enough light for easy perception of labels and merchandise, throughout these surfaces, from the eye level of an average person standing in the aisle.
- the light intensity, observed by such a person must enable him readily to read the labels and to examine the merchandise, in all parts of the aisle, without undue effort in stooping down, climbing up, or straining his eyesight, also when working'in areas between luminaires.
- Excessive glare must also be eliminated, from the viewpoint of a person standing in the aisle and looking at side areas thereof, including those close to overhead lamps, and also from the viewpoint of a person looking along the aisle.
- A, lens problem is provided by the floor of the aisle, which must generally be lighted only to a level that allows safe movement of people and equipment on it.
- the luminaire comprises a lamp 10 with a special reflector 11 and lens 12.
- Reflector I1 is wrapped down around thelamp region on the sides thereof, as best shown in FIG. 2 at l3, 14, but not on the ends thereof, which are shown in FIG. 1 at 15, I6.
- Lens or refractor '12 is made of glass or acrylic plastic or the like.
- This side wall of the lens varies, being relatively high at ends l5, 16 of the reflector space and being partly wrapped around this space (FIG. 1), where the edge of the reflector is relatively high.
- the side wall of the lens is lower on the sides (FIGS. 2 and 3), where the edge of the reflector is wrapped down to a'relatively low position.
- Socket 20 of lamp 10 is suitably incorporated in reflector end wall structure 21, for example by welding the outside wall of thesocket to this structure.
- lamp desirably has a light source L of thin tubular shape, as is provided by 'a clear mercury arc lamp'tube, a high pressure sodium arc tube, or an axially coiled filament.
- the relatively high wall portions 18 of lens 12, FIG. 1, receive and pass only direct light from light source L in lamp 10.
- the relatively lower portions 22 of the lens, FIGS. 2 and 3, receive and pass light from the lamp and also from lower reflector portions 23 facing the same.
- Lens bottom 17 also receives light from the lamp direct proportion of height to width, and when the attendant vantageously of the incandescent type.
- the new unit provides high photometric as well as refractive efflciency, along with excellent visual comfort in areas of the indicated type, by the use of reflector and lens means specially disposed in relation to the lamp, and to one another, as will now be described.
- FIG. 1 is a sectional view of a simple and preferred embodiment of the invention, the view being taken along lines 1--l in FIG. 4; I
- FIG. 2 is a schematic, fragmentary, sectional view of the same unit, taken along lines 2-2 in FIG. 1 and showing certain ray traces;
- FIG. 3 is a section generally similar to FIG. 2 but showing other ray traces
- FIG. 4 is a partial bottom view of the new unit
- FIG. 5 is a schematic side view of the unit, mounted in a storage aisle; f
- FIG. 6 is a plan view of the same aisle structure taken along lines 6-6 in FIG. 5;
- FIGS. 7 and 8 are polar diagrams of intensity of illumination, taken in. different planes which are shown in FIG. 6 at 77 and 8-8.
- reflector 11 has elliptical sections 27-28 and 27-29, intersecting at an obtuse angle 27 and overlying lamp 10, to focus light from light source L in the lamp to a point? slightly below the lens and near the axis A of the lamp.
- light from L reflected by lower, parabolic sections 28-'-l3 and 29-14 of the reflector, is directed in form of abundle B of parallel rays.
- Each side 27-13 and 27-14 of the reflector -throws this light towards the opposite wall of the aisle, through refractor portions on the two sides of an elongated center section which has prisms 24 parallel to light source L.
- the outer boun-' daries of the reflected focused light are shown by dashdot lines. These also are in substance the inner boundaries of the reflected parallel light.
- the elongate center section of lens 12, having prisms 24, as shown in FIG. 3, redirects the direct, central lamp rays R, which would normally fall on the floor of the aisle, into two beams directed toward somewhat higher regions, to aid in illuminating the lower sides of the aisle.
- This center section of the lens deals with direct lamplight, as thelight from the elliptical and parabolic reflector sections does not reach this center section of the lamp.
- the effect is enhanced by the provision of prisms 24 on this center section, extending along the aisle.
- the light is directed across the aisle(plane 77'in FIG; 6) in a way which distributes the light in thisplane efficiently, as indicated by diagram 7. It provides two high intensity beams B1, B2, having sharp cut-off on their sides and providing very low intensity in the" region Ron the vertical axis.
- central part 24 has prisms, extending at right angles to prisms 25, 26, to throw the incident light onto lower parts of the sidewalls'of the aisle, rather, than on the floor.
- prisms in the general location and orientation of those on part'24 may also extend upwardly over sidewall 18 of the lens as FIG. 4 shows at 24'.
- the new luminaire operates in a way very different from conventional practice.
- Conventional illumination of the aisle with intensities comparable to those shown in FIGS. 7 and 8, could be obtained only by the use of narrow-beam high-bay symmetrical luminaires, spaced at fairly close distances along the aisle, in order to realize enough light intensity at eye level and assure gettingthe desired, vertical foot candles. Since the distribution from such luminaires is generally circular, they would produce a scalloped light effect along the upper level of patter'm could be'avoided', but'exeessiv'e floor lighting would'still be present, vertical light distribution would still be inadequate,'and glare would still be a problem. in all these respects, the new light fixtureis superiorto conventionalfluorescent as well as other lamps,'in its distributed light efficiency and provision of visual comfort.
- a lurninairefor illuminating'the fl'oor and-walls of to a storage aisle comprising i i I an elongated light source "the axis of which is parallel to the axis of the aisle to be illuminated, a reflector having'first and 'secondhalveswith'each half having anupper portion'substantially above 1 ishil 3 a: 1252' said light source, 2 a v I i a refractor underlying saidlight source and having first and second refracting portions, said first portion of saidtrefractor being comprised of parallel rows of prisms substantiallyparallel to said axis of said light source and symmetrically located on either side of said axis, said second portion being comprised-of prisms for spreading light along the axis of said light source, 1 7
- each said reflector half reflecting light-rays to converge. at a pointibelow said refractor, substantially all of said converging rays source and a low r pp upper portlonon e e passing through said second portion of said refractor, and,
- each said reflector half reflecting light in parallel beams, substantially all of the light in said parallel beams passing only through said second portion of said refractor,
- first and second halves of said reflector are symmetrical about the axis of said light source.
- a luminaire as claimed in claim 1 in which the prisms of said first portion of said refractor on each side of said line parallel to said axis of said light source elevate and direct light to a corresponding side of said luminaire, respectively.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10404071A | 1971-01-05 | 1971-01-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3681591A true US3681591A (en) | 1972-08-01 |
Family
ID=22298360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US104040A Expired - Lifetime US3681591A (en) | 1971-01-05 | 1971-01-05 | Light fixture for a storage aisle |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4164010A (en) * | 1977-12-22 | 1979-08-07 | Finch David H | Illuminated bank window |
US4262326A (en) * | 1979-03-16 | 1981-04-14 | K-S-H, Inc. | Lens for high intensity lamp fixtures |
US5105346A (en) * | 1990-09-10 | 1992-04-14 | Remote Ocean Systems, Inc. | Method and apparatus for illuminating an underwater environment |
US6945668B1 (en) * | 2002-12-13 | 2005-09-20 | Linear Lighting Corp. | Multidirectional transparent panel lighting system |
US20070268585A1 (en) * | 2000-07-14 | 2007-11-22 | Scott Santoro | Light control devices implemented with diffusers having controllable diffusion characteristics |
US20080285267A1 (en) * | 2007-04-10 | 2008-11-20 | Ledalite Architectural Products, Inc. | Light control device exhibiting batwing luminous intensity distributions in upper and lower hemispheres |
US7588345B1 (en) * | 2005-01-06 | 2009-09-15 | Arch Lighting Group Inc. | Lighting system |
US20100142179A1 (en) * | 2008-12-08 | 2010-06-10 | Chi Mei Communication Systems, Inc. | Portable electronic device |
USD895878S1 (en) | 2018-05-04 | 2020-09-08 | Abl Ip Holding Llc | Asymmetric linear optic |
US10948162B2 (en) | 2018-05-04 | 2021-03-16 | Abl Ip Holding Llc | Optics for aisle lighting |
USD927037S1 (en) | 2018-05-04 | 2021-08-03 | Abl Ip Holding Llc | Symmetric linear optic |
-
1971
- 1971-01-05 US US104040A patent/US3681591A/en not_active Expired - Lifetime
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4164010A (en) * | 1977-12-22 | 1979-08-07 | Finch David H | Illuminated bank window |
US4262326A (en) * | 1979-03-16 | 1981-04-14 | K-S-H, Inc. | Lens for high intensity lamp fixtures |
US5105346A (en) * | 1990-09-10 | 1992-04-14 | Remote Ocean Systems, Inc. | Method and apparatus for illuminating an underwater environment |
US20070268585A1 (en) * | 2000-07-14 | 2007-11-22 | Scott Santoro | Light control devices implemented with diffusers having controllable diffusion characteristics |
US7837361B2 (en) * | 2000-07-14 | 2010-11-23 | Ledalite Architectural Products | Light control devices implemented with diffusers having controllable diffusion characteristics |
US6945668B1 (en) * | 2002-12-13 | 2005-09-20 | Linear Lighting Corp. | Multidirectional transparent panel lighting system |
US7588345B1 (en) * | 2005-01-06 | 2009-09-15 | Arch Lighting Group Inc. | Lighting system |
US20080285267A1 (en) * | 2007-04-10 | 2008-11-20 | Ledalite Architectural Products, Inc. | Light control device exhibiting batwing luminous intensity distributions in upper and lower hemispheres |
US8047673B2 (en) | 2007-04-10 | 2011-11-01 | Philips Electronics Ltd | Light control device exhibiting batwing luminous intensity distributions in upper and lower hemispheres |
US20100142179A1 (en) * | 2008-12-08 | 2010-06-10 | Chi Mei Communication Systems, Inc. | Portable electronic device |
US7926962B2 (en) * | 2008-12-08 | 2011-04-19 | Chi Mei Communication Systems, Inc. | Portable electronic device |
USD895878S1 (en) | 2018-05-04 | 2020-09-08 | Abl Ip Holding Llc | Asymmetric linear optic |
US10948162B2 (en) | 2018-05-04 | 2021-03-16 | Abl Ip Holding Llc | Optics for aisle lighting |
USD927037S1 (en) | 2018-05-04 | 2021-08-03 | Abl Ip Holding Llc | Symmetric linear optic |
US11512834B2 (en) | 2018-05-04 | 2022-11-29 | Abl Ip Holding Llc | Optics for aisle lighting |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HOLAPHANE COMPANY, INC., A CORP. OF DE. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MANVILLE SALES CORPORATION, A CORP. OF DE;REEL/FRAME:005125/0574 Effective date: 19890630 Owner name: WELLS FARGO BANK, N.A., Free format text: SECURITY INTEREST;ASSIGNOR:HOLOPHANE COMPANY, INC.;REEL/FRAME:005221/0095 Effective date: 19890620 |
|
AS | Assignment |
Owner name: JOHNS-MANVILLE SALES CORPORATION (CHANGED TO) Free format text: MERGER;ASSIGNOR:MANVILL SALES CORPORATION;REEL/FRAME:005253/0520 Effective date: 19890605 Owner name: MANVILLE BUILDING MATERIALS CORPORATION (MERGED IN Free format text: MERGER;ASSIGNOR:MANVILL SALES CORPORATION;REEL/FRAME:005253/0520 Effective date: 19890605 Owner name: MANVILLE SERVICE CORPORATION Free format text: MERGER;ASSIGNOR:MANVILL SALES CORPORATION;REEL/FRAME:005253/0520 Effective date: 19890605 Owner name: MANVILLE PRODUCTS CORPORATION Free format text: MERGER;ASSIGNOR:MANVILL SALES CORPORATION;REEL/FRAME:005253/0520 Effective date: 19890605 |
|
AS | Assignment |
Owner name: WELLS FARGO BANK, N.A., AS AGENT, CALIFORNIA Free format text: FIRST AMENDMENT TO PATENT SECURITY AGREEMENT AND SECOND AMENDMENT TO SUPPLEMENTAL PATENT SECURITY AGREEMENT;ASSIGNOR:HOLOPHANE CORPORATION, SUCCESSOR BY MERGER TO HOLOPHANE LIGHTING, INC., A DELAWARE CORPORATION;REEL/FRAME:007534/0221 Effective date: 19950331 |
|
AS | Assignment |
Owner name: HOLOPHANE CORPORATION (SUCCESSOR BY MERGER TO HOLO Free format text: RELEASE OF PATENT AGREEMENTS;ASSIGNOR:WELLS FARGO BANK, N.A., AS AGENT;REEL/FRAME:009314/0787 Effective date: 19980323 |