US3767912A - Floodlight having quick release support for lamp envelope - Google Patents

Floodlight having quick release support for lamp envelope Download PDF

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Publication number
US3767912A
US3767912A US00276852A US3767912DA US3767912A US 3767912 A US3767912 A US 3767912A US 00276852 A US00276852 A US 00276852A US 3767912D A US3767912D A US 3767912DA US 3767912 A US3767912 A US 3767912A
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United States
Prior art keywords
ring
lamp
shaft
movable
envelope
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Expired - Lifetime
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US00276852A
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English (en)
Inventor
K Faux
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Phoenix Products Co Inc
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Phoenix Products Co Inc
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    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/04—Fastening of light sources or lamp holders with provision for changing light source, e.g. turret
    • 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
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames

Definitions

  • a floodlight fixture has a cup-shaped housing in which a lamp is enclosed with the maximum diameter por- [21] Appl. No.: 276,852 tion of its glass envelope axially clamped between fixed and movable steadying rings.
  • the movable ring [52] U 8 CI 240,41 55 240,90 has a hinged connection with the fixed one, to swing [5 I] 17/061, to a lamp releasing position, and is quickly rcleasably (58] Fieid "54 55 90 latched in its lamp engaging position.
  • the latch and the hinge connection are arranged to bias the movable [56] References Cited ring axially toward the fixed one. Hinge connection bias cooperates with fingers on the movable ring to UNITED STATES PATENTS detentwise hold it in its lamp releasing position.
  • PAIENIEDum 23 ms SHEET 3 BF 4 FICAB)- FlGh5- FLOODLIGHT HAVING QUICK RELEASE SUPPORT FOR LAMP ENVELOPE This invention relates to electric floodlight fixtures that provide a protective enclosure and mounting for a lamp, and the invention is more particularly concerned with means in the lamp housing of such a fixture for removably supporting the glass envelope of a lamp in a manner that enables it to withstand vibrations and shocks and permits the lamp to be quickly and easily replaced.
  • the lamp with which any such fixture is intended to cooperate has a glass envelope with a maximum diameter portion near its front end and with coaxial forwardly and rearwardly convergent portions adjacent to its maximum diameter portion. At the rear of the envelope the lamp has terminal means connected with a filament inside the envelope and adapted to be received in a more or less standardized socket.
  • the lighting fixture comprises a generally cup-shaped housing, open at its front, in which the lamp is received and by which it is protected, and which has mounting provisions at its exterior.
  • a socket for the lamp terminals is mounted in the rear portion of the housing.
  • the support for the lamp envelope comprised a rear ring which was resiliently mounted in the housing and which had its inner diamet'er portion formed as a seat that engaged the rearwardly convergent portion of the envelope, rearwardly adjacent to its maximum diameter portion.
  • a removable front ring Cooperating with the relatively fixed rear ring was a removable front ring, the inner diameter portion of which was formed as a seat that engaged the forwardly convergent portion of the envelope.
  • the front ring was in each instance secured to the rear ring in a manner permitting its complete detachment therefrom. To prevent the front ring from being dropped when it was detached for lamp replacement, it was tethered to the housing of the fixture.
  • the front ring had circumferentially elongated keyholeshaped slots through which thumb screws were threaded into the rear ring. These screwshad to be loosened and the front ring then had to be rotated to align the larger portions of its slots with the heads of the screws in order to permit the front ring to be withdrawn forwardly.
  • the support for the large diameter portion of the lamp envelope comprises a pair of rings that are so connected as to be normally inseparable, one of said rings being swingable relative to the other between a lamp retaining position and a lamp releasing position, and wherein very simple and easily manipulated latching means secures the movable ring in its'lamp retaining position.
  • Another and more specific object of this invention is to provide a floodlight fixture of the character described having a very simple and inexpensive movable lamp engaging ring that seats against a forwardly convergent portion of a lamp envelope to cooperate with a relatively fixed ring in steadying the envelope, wherein the movable ring is resiliently connected with the fixed ring to provide for yielding axial clamping of the maximum diameter portion of the envelope, and wherein the movable ring has certain integral portions that respectively provide for its hinged connection with the fixed ring, for releasably latching it in its lamp retaining position, and for holding it detent-wise in a forwardly swung, out of the way, lamp releasing position.
  • FIG. 1 is a front perspective view of a lamp fixture embodying the principles of this invention
  • FIG. 2 is a vertical sectional view of the lamp fixture shown in FIG. 1;
  • FIG. 3 is a view generally similar to FIG. 2 but showing the front ring of the fixture swung to its lamp releasing position;
  • FIG. 4 is a view of the fixture in front elevation
  • FIG. 5 is a fragmentary sectional view on an enlarged scale taken on the plane of the line 5-5 in FIG. 4.
  • the numeral 5 designates generally the floodlight fixture of this invention, which is intended to provide support and protection for a lamp 6.
  • the fixture 5 comprises a generally cup-shaped housing 7 that is open at its front, a U-shaped yoke or bail 8 upon which the housing is piv' oted for adjusting up and down motion, and a swivel base 9 upon which the bail is in turn mounted for sideto-side adjustment of the housing and for attachment of the fixture to other structure.
  • the lamp 6 is a more or less standard floodlight type, with a glass envelope that flares to a maximum diameter portion 10 near its front end.
  • the envelope also has coaxial forwardly and rearwardly converging portions 11 and 12, respectively, just ahead of and just behind its maximum diameter portion.
  • Terminal means 13 on the small diameter rear portion of the envelope, connected with a filament 14 inside the envelope, can be received in a suitable socket 15 inside the housing 7.
  • the socket 15 is illustrated as being of the screw-in type, cooperable with a threaded base on the lamp that comprises its terminal means 13.
  • the fixture here illustrated is intended to be mounted on mobile apparatus such as an earth moving machine
  • the lamp 6 is yieldingly supported in the housing to enable it to withstand shocks and vibration.
  • the socket 15 is resiliently suspended from the circumferential wall of the housing, and the convergent portions 11 and 12 of the lamp envelope are engaged by rings that are similarly shock mounted, as hereinafter described.
  • the mounting for the socket 15 is similar to that illustrated and described in Wenman et al. US. Pat. No. 3,018,365, to which reference may be made for details.
  • it comprises a rigid outer ring 17 which is closely received within the circumferential housing wall 7 near the rear thereof and which is secured to that wall, a resilient connecting ring 18 of rubber or the like which has its outer marginal edge portion secured to the outer ring 17, and a base plate 19 which is secured to inner marginal edge portions of the rubber ring 18 and on which the socket 15 is mounted.
  • the resilient support for the front end portion of the glass envelope comprises a relatively fixed rear ring 20 that engages the rearwardly convergent portion 12 of the envelope and a front ring 21 that is movable between a lamp releasing position and a lamp retaining position, in the latter of which it engages the forwardly convergent portion 11 of the envelope.
  • the rear ring 20 has a resilient shock mounting comprising an outer rigid ring 22 which is similar to the rear outer ring 17, and which, like it, fits closely within the circumferential wall of the housing and is secured thereto, being located about midway between the rear outer ring 17 and the open front of the cup-shaped housing.
  • the front outer ring 22 also has secured to it a rubber ring or annular diaphragm 23, similar in configuration to the rear rubber ring 18 in that it has flat substantially coplanar radially inner and outer portions 24 and 25 connected by an intermediate portion 26 of U-shaped cross section.
  • the radially outer portion 25 of the rubber ring 23 is flatwise secured to the front outer ring 22, as by means of rivets 27.
  • a flat, radially narrow metal reinforcing ring 28 flatwise overlies the radially outer portion of the rubber ring to prevent the rivets 27 from tearing through it.
  • the relatively fixed rear lamp engaging ring 20 is supported from the radially inner flat portion 24 of the resilient ring 23 on circumferentially spaced forwardly projecting legs 30.
  • Overlying the opposite faces of the radially inner portion of the resilient ring 23 are radially narrow flat reinforcing rings 31, which are secured by rivets 32 that extend through them and the rubber ring.
  • the legs 30 are substantially U-shaped, each having a rear out-turned flange 33 that overlies the front reinforcing ring 31 and is secured thereto by screws 32, only one of which appears in FIG. 2, and a front out-turned flange 34 that flatwise overlies the rear surface of the fixed lamp engaging ring 20 and is secured to that ring as by rivets 35.
  • the rear lamp engaging ring 20 has its inner marginal edge portion beveled 0r cambered to provide a frustoconical seat 37 for the rearwardly convergent portion 12 of a lamp in the housing.
  • the front lamp engaging ring 21 likewise has its inner marginal edge portion beveled or cambered, as at 38, to provide a seat for the forwardly convergent portion 11 0f the lamp envelope.
  • the rings 20 and 21 thus cooperate to clamp the large diameter portion of the lamp envelope, and since they are under yielding axial bias towards one another, as explained below, such clamping is effected in a manner to accommodate peculiarities in the shape of the lamp envelope and its thermal expansion and contraction.
  • the front ring 21 is hingedly carried by the rear ring 20 to swing between lamp engaging and lamp releasing positions which are respectively illustrated in FIGS. 2 and 3.
  • the hinge connection between the rings 20 and 21 comprises a pair of apertured parallel ears 4'0 that are formed integrally with the front ring 21, a hinge pin 41 that extends through those ears, and a pair of plunger-like hinge-pin carriers 42 that extend through holes in the rear ring 20 and conjointly support the hinge pin.
  • Each of the hinge pin carriers 42 has its axis parallel to that of the rear ring and is guided in its hole in that ring for axial back and forth motion.
  • the hinge pin 41 is received in transverse holes in the front end portions of the carriers to extend parallel to the front face of the rear ring.
  • One end of the hinge pin is peened or swedged, as at 44, and a push-on clip 45 at its other end cooperates with the swedging to prevent it from being displaced axially out of the carriers.
  • the hinge pin is bodily movable back and forth with the carriers 42, towards and from the fixed ring 20.
  • the carriers are urged rearwardly by means of a coiled compression spring 47 that surrounds the rear portion of each and reacts between an enlarged head 48 on the rear end of the carrier and the rear surface of the fixed ring 20.
  • the hinge pin carriers are located on a line that lies wholly outside the inner diameter of the rear ring 20, so that the hinge pin does not interfere with insertion or removal of a lamp. As shown, the axis of the hinge connection extends horizontally across the top of the rear ring.
  • the hinge ears 40 on the front ring 21 comprise integral rearwardly bent tabs that lie parallel to one another and are spaced apart by a distance such that they are inwardly adjacent to the hinge pin carriers 42.
  • each finger and its adjacent hinge ear forms an L-shaped projection fron the front ring, with the junction of the legs of the L integrally connected with the ring at its outside diameter.
  • the fingers 50 engage the front surface of the rear ring, and they slide along it with continued raising of the front ring.
  • the hingepin and its carriers 42 are compelled to move forwardly against the bias of the springs 47.
  • the fingers 50 thus effect an over-center detent action by which the front ring 21 is readily releasably held in its raised position, in which its axis is approximately normal to that of the rear ring, as illustrated in FIG. 3.
  • the front ring presents no obstruction to manipulation of a lamp for removal or insertion.
  • the front ring can be raised to that position or flipped down from it with extreme case, even by a person wearing bulky mittens.
  • the front ring is readily releasably confined in its lamp engaging position by means of a latch which is located diametrically opposite the axis of the hinge connection, at the bottom of the lamp housing, and which comprises a shaft-like latch member 52 that extends through a hole in the rear ring 20.
  • the hole is of such size as to guide the latch member 52 for rotation and for axial motion.
  • the latch member is biased axially rearward by means of a coiled compression spring 54 which embraces its rear end portion and reacts between an enlarged head 53 thereon and the fixed ring 20.
  • the limit of rearward motion of the shaft member in response to the spring 54 is defined by a cross-pin 55 through the shaft member, which then engages the front surface of the rear ring. That cross-pin also serves to engage the front ring and latch it in its lamp retaining position. More specifically, the front ring has an integral laterally outwardly projecting tab-like extensionf56 which is diametrically opposite the hinge connection and in which there is a radially outwardly opening slot 57 that is wide enough to receive the latch member with ample clearance.
  • the front ring can swing without hindrance.
  • the shaft-like member 52 is pulled forwardly against the bias of its spring 54 and is then rotated to engage the cross-pin over the front surface of the tab-like extension at opposite sides of the slot 57.
  • the tab-like extension can have shallow forwardly opening grooves 58 at opposite sides of the slot 57, extending transversely to that slot, in which the opposite arms of the cross-pin 55 tend to seat with a detent action as the latch member is rotated to its locking position.
  • a T-handle 59 at its front, comprising a second cross-pin.
  • the T-handle cross-pin is oriented parallel with the cross-pin 55 so that it will clear the edges of the slot 57 as the front ring is raised and lowered. Because of the easily gripped T- handle, and because the latch member needs to be rotated only 90 between its locking and releasing positions, it can be readily manipulated even with hands encased in heavy mittens.
  • this invention provides inexpensive but very effective means for securely supporting the glass envelope of a floodlight lamp in a protective housing, and wherein such support is provided in a manner that protects the lamp against shock and vibration and permits it to be quickly and easily replaced even under very adverse conditions.
  • a housing for a lamp of the type that comprises an envelope enclosing a filament and terminal means at the rear of the envelope for connecting the filament with a source of current, the envelope having a maximum diameter portion spaced forwardly of the terminal means and having coaxial portions forwardly and rearwardly adjacent to the maximum diameter portion which respectively face towards the front and the rear of the envelope, said housing being of the type comprising a forwardly opening enclosure having socket means at its rear in which the terminal means is readily detachably receivable and having a rear ring spaced forwardly of the socket means and providing a forwardly facing seat against which said rearwardly facing portion of the envelope is coaxially engageable, means cooperable with said rear ring to readily releasably hold the envelope of a lamp, the last named means comprising:
  • hinge pin extending through the carriers forward of the rear ring, said hinge pin being supported by the carriers for bodily back and forth motion and being biased rearwardly by said spring means;
  • a front ring having an inner diameter portion that provides a seat coaxially engageable with said forwardly facing portion of a lamp envelope, said front ring also having 1. a pair of spaced apart ears through which said hinge pin extends to pivot the front ring for swinging motion between a lamp retaining position coaxially overlying the rear ring and a forwardly swung lamp releasing position in which the front ring is substantially normal to the rear ring,
  • finger means extending obliquely rearwardly and radially outwardly over the hinge pin to engage the front surface of the rear ring as the front ring is swung toward its lamp releasing position, said finger means cooperating with said spring means to provide an overcenter connection between the rings by which the front ring is detent-wise held in its lamp releasing position, and
  • the lamp housing of claim 1 further characterized l. detent means fixed on said movable ring, projecting byz toward the fixed ring and across the hinge pin at G. other spring means reacting between said rear ring th id thereof remote from the center of the movand the shaft to bias the latter rearwardly.
  • able l'ihg Said detfml meahs 'h shdlhgly 3.
  • the lamp housing of claim 2 further characterized f f d j ggsrft 2122;1 8:352 gxi zj wggfigzg g of the movable ring to its lamp releasing position to H.
  • the first mentioned spring means comprising a afford an overcenter connection between the rings coiled spring surrounding each of said carriers and by which the movable ring is detentwise releasably bearing against an enlarged head on the rear held in its lamp releasing position thereof; and 6.
  • the lamp housing of claim 1 further characterized means P A. a relatively fixed rrng having an lnsldedlameter J.
  • a T-handle on said shaft spaced forwardly of the p f hat prov des a seat engageable with one of said coaxial portions of a lamp envelope; cross-pin and extending substantially parallel B.
  • a movable ring having an inside diameter portion thereto that provides a seat engageable with the other of 5.
  • a pair of elongated hinge pin carriers which are connectlon means q f limited relative movement between the rings in directions parallel mounted on the fixed ring with their axes substanto the axis of the fixed ring; pataueltofhe ofthe fixed rmg sald hmge D. biasing means operatively associated with said pln carriers being axially movable relative to the hinge connection means for yieldingly urging the fixed ring, being spaced apart chcumfel'ehtiahy hinge connection means on the movable ring in the around the fixed ring, and having their axes interdi i n towardthe fixed ring; v secting a line that lies wholly outside the inside di- E.
  • detent means fixed on said movable ring adjacent ameter of the fixed ring; to said hinge connection, projecting toward the C. a hinge pin conjointly carried by said carriers, fixed ring and across the hinge P at the Side overlying one surface of the fixed ring and movable h remote from thg F of the movable with said carriers toward and away from said one 3:53: 32:2;gfig'fi la fgggg i s h fiz g a Surfa.ce; jacent surface of the fixed ring up on swinging of spring means reacting between Sa 1d earners and the movable ring to its lamp releasing position to h PP shrine of the fixed i to urge the afford an overcenter connection between the rings hmge P bodlly toward the fixed rmg; by which the movable ring is detentwise releasably E. a movable ring having an inner diameter portion held in its iamp releasing position;
  • biasing means reacting between the shaft-like I F member eftendmg through f of Said member and said one ring to urge the shaft-like rmgs clrcumferemlauy spaced relatlon to the member in its axial direction that draws the rings flatwise towards one another when said releasable connection is engaged.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
US00276852A 1972-07-31 1972-07-31 Floodlight having quick release support for lamp envelope Expired - Lifetime US3767912A (en)

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US27685272A 1972-07-31 1972-07-31

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD242944S (en) 1975-12-22 1977-01-04 Moore Charles R Dual lamp
USD242945S (en) 1975-12-22 1977-01-04 Moore Charles R Lamp
US4513359A (en) * 1983-08-22 1985-04-23 Sterner Lighting Systems, Incorporated Lamp stabilizer
US4593344A (en) * 1984-12-24 1986-06-03 Basile Joseph L Light fixture with retainer
US20090314838A1 (en) * 2006-07-19 2009-12-24 B-Core Inc. Optical Symbol, Article to which the Optical Symbol is Attached, Method for Attaching Optical Symbol to Article, Optical Symbol Decoding Method, Related Device, and Related Program
USD1032735S1 (en) * 2023-09-23 2024-06-25 Yongji Tan Foam machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2521088B2 (ja) * 1987-04-14 1996-07-31 アルプス電気株式会社 バ―コ―ドの読み取り方法
JP2008129895A (ja) * 2006-11-22 2008-06-05 Core Japan Kk カラーコード及びそれを用いたｉｃタグ装着物品偽造防止装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644076A (en) * 1950-05-19 1953-06-30 Pyle National Co Retaining mechanism for sealed beam lamp type locomotive headlight assemblies
US3018364A (en) * 1961-02-27 1962-01-23 Phoenix Prod Resilient lamp mounting
US3018365A (en) * 1960-10-03 1962-01-23 Phoenix Prod Shock resistant mounting for lamps

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644076A (en) * 1950-05-19 1953-06-30 Pyle National Co Retaining mechanism for sealed beam lamp type locomotive headlight assemblies
US3018365A (en) * 1960-10-03 1962-01-23 Phoenix Prod Shock resistant mounting for lamps
US3018364A (en) * 1961-02-27 1962-01-23 Phoenix Prod Resilient lamp mounting

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD242944S (en) 1975-12-22 1977-01-04 Moore Charles R Dual lamp
USD242945S (en) 1975-12-22 1977-01-04 Moore Charles R Lamp
US4513359A (en) * 1983-08-22 1985-04-23 Sterner Lighting Systems, Incorporated Lamp stabilizer
US4593344A (en) * 1984-12-24 1986-06-03 Basile Joseph L Light fixture with retainer
US20090314838A1 (en) * 2006-07-19 2009-12-24 B-Core Inc. Optical Symbol, Article to which the Optical Symbol is Attached, Method for Attaching Optical Symbol to Article, Optical Symbol Decoding Method, Related Device, and Related Program
US8113432B2 (en) 2006-07-19 2012-02-14 B-Core Inc. Apparatus for recognizing an optical recognition code in which a code symbol of a 1-dimensional color bit code indicative of certain data is divided into a plurality of code symbols
USD1032735S1 (en) * 2023-09-23 2024-06-25 Yongji Tan Foam machine

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