US3043950A - Luminaire - Google Patents

Description

M. E. KECK July 10, 1962 LUMINAIRE 5 Sheets-Sheet 1 Filed July 26, 1957 INVENTOR Merle E. Keck WW ATT NEY July 10, 196 M. E. KECK 3,043,950

LUMINAIRE Filed July 26, 1957 3 Sheets-Sheet 2 l 78 76 72 ll '2' 58 Fig.4.

M. E. KECK July 10, 1962 LUMINAIRE 3 Sheets-Sheet 5 Filed July 26, 1957 Fig.6.

United States Patent 3,043,950 UMIN' poration of Pennsylvania Filed July 26, 1957, Ser. No. 674,397 17 Claims. (Cl. 240-25) The present invention relates to structural features of a lighting fixture or luminaire and more particularly to a luminaire of the character described for use in street lighting applications.

Previously proposed luminaires employed for the aforementioned purpose and other exterior applications have been particularly subject to the entry of insects, dust, and other foreign matter. On the other hand, those luminaires which were relatively sealed against the entry of foreign matter were diflicult to disassemble for replacement of lighting sources or for purposes of wiring or rewiring as the need arose. More specifically, such luminaires required the use of special tools and permanent fastening devices and the like in order to assemble and disassemble the component parts thereof.

Prior luminaires of this type suffered from the further disadvantage that the reflector and lamp holder and other component parts thereof as well as their physical size prevented the use of differing sizes of light sources therefor. Moreover, the lamp holder frequently has been arranged in these prior devices with the electrical terminals thereof disposed inwardly of the reflector in order to facilitate wiring of the luminaire. This arrangement is disadvantageous in that the exposed wiring terminals presented an electrical shock hazard to personnel engaged in replacing the light source or in other maintenance activity connected with the luminaire.

An additional disadvantage of previously proposed luminaires or lighting fixtures is created by the fact that electrical conduits of two or more sizes are standard for use in supporting the luminaire and for conducting the electrical leads thereto. Presently used conduits are 2 inches and 1%. inches, respectively, and accordingly, in order to adequately seal prior luminaires, it was necessary to adapt the same for use with only one or the other of the aforesaid conduits. Therefore, luminaires constructed in this fashion were of limited usage in that in most cases separate or additional housings were required in order to accommodate the respective standard conduits.

In view of the foregoing, a novel and efficient luminaire or lighting fixture is contemplated by the invention.

It is intended that such luminaire be provided with means for segregating or shielding the light source thereof from the electrical wiring and terminals.

It is also intended that a single luminaire be provided with means for adapting it to one of a plurality of standard electrical Wiring conduits.

It is further contemplated by the invention that the luminaire be provided with means for substantially sealing the optical system thereof against the entry of insects, dirt and other foreign matter.

Means for facilitating access to and wiring of the lumniaire is another object of the invention together with means for providing the accommodation of differing sizes of light sources to the luminaire arrangement.

These and other objectives, features and advantages of the invention will become apparent during the ensuing description of exemplary forms thereof, with the description being taken in conjunction with the accompanying drawings, wherein:

, FIGURE 1 is a perspective view of a luminaire or lighting fixture contemplated by the invention and ar- 3,043,950 Patented July 10, 1952 "ice ranged in this example for use in street lighting appilcations;

FIG. 2 is a partial, longitudinally sectional view showing the conduit end portion of the luminaire of FIG. 1;

FIG. 3 is an end elevational view of the luminaire portion illustrated in H6. 2;

FIG. 4 is a partial, longitudinally sectional view of the latching and reflector retaining arrangement of the luminaire illustrated in FIG. 1;

FIG. 5 is a partial bottom plan view of the aforesaid luminaire taken along reference lines V-V of FIG. 4; and

FIG. 6 is a partial, longitudinally sectional view of the conduit end portion of the luminaire of FIG. 1 but showing an internal adaptation, relative to the lampholding means thereof to permit usage of a different size of light source.

in accordance with the invention, a luminaire or lighting fixture is provided with means for accommodating the fixture for use with diifering sizes of wiring conduits which conduit is thus arranged for supporting the lighting fixture. The conduit adapting means is further arranged to permit facile leveling or alignment of the lighting fixture relative to the disposition of. the conduit. The luminaire is further provided with means associated with the reflector or optical system thereof for accommodating lamp holders of different sizes in order that assorted sizes of lighting sources can be utilized therewith. Additional means are provided for detachably securing the reflector of the luminaire Within its housing in a manner that the same can be removed wthout the use of tools or without disassembling any sort of fastening means therefor. Further, in accordance with the invention, the supporting member for the refractor of the luminaire is furnished with means for facilitating access to the wiring and terminal compartment of the luminaire and for securing the refractor mounting member with a minimum of component parts.

Referring now more particularly to FIGS. 1 to 5 of the drawings, the exemplary form of the invention illustrated therein comprises a lighting fixture having a genera'lly ovate housing It) furnished with a bottom opening 11. The housing ltl presents an inverted substantially U-shaped hood member terminating in a conduit receiving end portion 12. A refractor assembly 14 is attached to the housing ltl. As better shown in FIGS. 2 and 4 of the drawings, an inverted bowl-shaped optical reflector assembly 16, likewise having a bottom opening, is inserted within the housing 10 and generally conforms to the interior walls thereof but for the most part is spaced therefrom. The rearward end of the reflector 16 is provided with an aperture 18, removed from its aforesaid opening, through Which a projecting portion 20 of a lamp holder assembly 22 is inserted. The lamp22 is arranged for providing electrical contact to :a lighting source indicated generally by the reference character 24 and insorted in the lamp holder. The lamp holder, in turn, is mounted within the housing 10 by means of a bracket 26 secured to a pairo-f suitably disposed projections 28 of the housing 10 by means of conventional fastening means, for example, the screws 30. The bracket 26 terminates in a generally U-shaped configuration disposed more or less at right angles to the body portion of the bracket. The legs 32 of the U-shaped bracket portion are arranged to straddle the lamp holder 22 and are secured thereto by suitable fastening means, for example, bolts 34.

When thereflector 16 is positioned as illustrated in FIGS. 2 and 4, it seats against a collar portion 36 of the lamp holder and the aperture 18 of the reflector 16 is sealed by engagement of adjacent portions of the refiec tor 16 with a generally circular gasket 38 of a compresthe drawings, is supported relative to the housing by means of a single spring 40. This spring is secured to the housing 10 with a mounting screw 42. inserted through its lower end. The upward end of the spring 4%) projects inwardly and upwardly of the housing 18 in order to provvide limited movement thereof relative to the housing wall. The upward extremity of the spring 40 is bent over slightly in order to faciiltate engagement thereof with a dimple 44 formed in the associated end portion of the reflector 16. i

" The dimple 44 is so arranged that, when engaged with the spring .40, a bottom flange portion 46 of the reflector 16 seats against the bottom extremity of the housing wall,

as indicated by the reference character 48 (FIG. 4). The

aforesaid reflector flange 46 extends entirely around the bottom opening of the reflector and is provided with sufficient width to engage the aforementioned housing wall at the entire periphery of the opening 11 of the hous ing 10 except, of course, where the latter joins and communicates with the conduit section 12. It is contemplated that the spring 40 is to be provided with sufficient bias 7 that reflector 16 will be urged rearwardly, when the spring engages the dimple 44 thereof, such that the reflector 16 will seat against the lamp holder 22 and associated gasket 28 with suflicient force to effect a seal between the reflector 16 and the lamp holder collar 36.

A refractor 50 adapted for use with the luminaire is equipped adjacent its top opening with a similarly arranged flange portion 52 extending around its aforesaid opening. The refractor flange 52 is urged to engage directly the reflector flange 46 when the refractor 50 is mounted in the luminaire or lighting fixture by means presently to be described. In order to seal the optical system of the luminaire, which system comprises the refractor 50 and the reflector 16, an oval gasket 54 of a material similar to that of gasket 38 is inserted between the respective flanges 46 and 52 of the reflector '16 and the refraotor 50. Accordingly, a sealed optical system is provided by utilizing the aforesaid gasket 54 and the provided with rearwardly extending wiring terminals 56 due to the fact that the open bottomed hood member which terminates in container portion 12 is readily accessible, as described presently, for purposes of making the 60 and 62, which are fabricated in this example of the invention, integrally with the container 12. The upward portions of the ribs 60 and 62 are cooperatively curved to form an arcuate configuration, as indicated by the reference character 64, which configuration is thus adapted to enclose partially an electrical wiring conduit 66 or 68 inserted into the container portion 12. When thus positioned, the extent to which the conduit 66 or 68 is inserted is determined by a suitably spaced stop 70 likewise formed integrally with a wall section of the container 12. The top surface of the conduit 66 or 68, then, can be engaged by a pair of leveling screws 72 and 74 which are threaded through respective spaced, tapped apertures 76 and 78 extending through the top wall of the container 12 adjacent the outward end thereof. These leveling screws 72 and 74 cooperate with suitable clamping means for securing the luminaire to the end portion of the wiring conduit 66 or 68 and for longitudinally aligning the luminaire therewith.

One form of such clamping means arranged for cooperating with the inward leveling screw 74 comprises an inverted yoke 80 of generally U-shape in cross section and arranged to be drawn upwardly into contact with bottom portions of the conduit 66 or 68 by the clamping I Another clamping means arranged here for coopera-- tion with the outer leveling screw 72 is provided in the form of a bracket 88 or 90 as better shown in FIG. 3 of the drawings. The bracket 88 is provided with an inverted yoke portion 92 having an arcuate configuration arranged to engage closely the larger of the wiring conduits 66. "On the other hand, the bracket 90 shown in dashed outline in FIG. 3 similarly is provided with an inverted yoke portion but is shaped to engage closely the smaller of the Wiring conduits 68. Each of the brackets 88 or 90 is provided in this example with four apertures which are arranged for alignment with similarly spaced tapped holes 94 provided in the inwardly extending ribs 60 and 62 of the container 1 2. Accordingly, either one of the brackets 88 and 90, dependingon which conduit 66 or 68 is employed, can be secured to the ribs 60 and 62 and disposed outwardly thereof by means of mounting screws 96.

When the bracket 88 or 90 is thus secured in position by the mounting screws 96, the leveling screw 72 is then tightened to clamp the conduit 66 or 68 between the screw 72 and the yoke portion of the respective bracket. When thus secured in position, the leveling screw 72 serves as a pivot about which the conduit 66 or 68 or the housing 10 of the luminaire can be rotated slightly, after first loosening the leveling screw 74 and the yoke 80, for purposes of alignment. When the proper alignment is determined, the leveling screw 74 and the associated clamping yoke 80 are then retightened to preserve the desired position of alignment of the luminaire with its supporting conduit 66 or 68.

As better shown in FIGS. 2 and 3 of the drawings, each bracket 88 or 90 terminates a pair of spaced, pin receiving/cradles 98 and 1080f generally -U-shaped configuration, the lowermost portion of which is more or less flush with the lower extension 102 of the wall of the container 12. These cradles are adapted to receive and seat the hinge pins 114, presently to be described. It is contemplated that additional brackets similar in structure to that of the brackets 88 or 30 can be provided for conduit sizes other than those of the conduits 66 or 68. 8

Referring once again to FIGS. 2 and 4 of the drawings,

one form of refractor retaining member 104 is illustrated therein. The retaining member comprises a refractor engaging ring 166 having an arcuate or oval configuration conforming generally to and closely fitting with the outer periphery of the refractor 50 adjacent its opening. The ring 106 is split for purposes pointed out hereinafter and is equipped with an inwardly extending flange 108 coextending with the periphery thereof and arranged toenagainst the gasket 54 and the reflector flange'46 extending,

as aforesaid, around the periphery of the refractor flange 52. With this sealing arrangement, a dust-free optical system including the reflector 16 and the refractor 50 is obtained.

Joined to the refractor ring 106 of the retaining member 104 is a container closure section 1 which, when the retaining member is in its aforesaid operative position, forms a bottom wall of the wiring container portion 12. The closure section 110, as better shown in FIG. 1 of the drawings, is formed with a contour conforming substantially with the side wall extensions 1112 of the container 12 and in addition forms a relatively close fit therebetween in order to minimize the entry of foreign matter into the wiring container portion 12. The closure section 110 of the mounting member 184 is equipped adjacent its outward end with a transversely extending rib 112 which, in turn, terminates at either end in a pair of hinge pins 114. Lateral support is provided to the rib 1 12 by a longitudinally extending rib 116 bridging an upturned portion 118 of the closure section 110. An additional longitudinal rib 119 desirably is provided on the upward surface of the closure section 110 in order to impart structural strength thereto.

In the operation of the retaining member 104, the hinge pins .114 thereof are cradled respectively in the pin retaining cradles 98 and 100 of the bracket 88 or 90, as noted heretofore. The pin cradles 98 and 100 are so formed that when the retaining member 104 is in itsfully open position, that is to stay, when it is disposed at a substantial angle to the longitudinal axis of a luminaire, it can be completely removed from the luminaire by raising the retaining member slightly so that the hinge pins 114 and the rearward extremity 120 of the closure section 110 can be lifted over the upper extremities of the terminal legs 122 of the pin cradles 98 and 103, as shown in FIG. 2 of the drawings. When the retaining member 104 is thus removed or when it is disposed in its fully open position as aforesaid, the wiring and the associated terminals 56, as well as the yoke clamping screws 82 are fully accessible for adjustment, maintenance or repair as the case may be.

When the retaining member 104 is disposed in its operative position where at the refractor 50 is sealed to the reflector 16 as aforesaid, a latching arrangement is provided at the front end of the refractor ring 1116 in order to secure this portion of the retaining member in the aforesaid operative position. As better shown in FIG. 4 of the drawings, the latching arrangement includes a latching lever 124 pivotal-1y secured to a mounting bracket 126 on the housing 10. Desirably the mounting bracket 126 is provided with a tapped hole into which the screw 42 employed in mounting the spring 40 is threaded for the purpose of securing both the spring 40 and the mounting bracket 126 to the adjacent wall portion of the housing 10. Latching lever 124 is generally U-shaped in section, and a pivot pin extends through the sides thereof adjacent the upward end of the latching lever 124, where an inwardly projecting portion 128 is formed, and into openings in the bracket 126 whereby the latching lever 124 is pivoted to the mounting bracket 126. A suitable spring means 130 is associated with the aforesaid pivot in order to bias the latching lever 124 clockwise to its latching position.

As better shown in FIG. 5 of the drawings, a suitable catch mechanism is included for cooperation with the aforedescribed latching mechanism 124. In this example of the invention, the catch mechanism, indicated generally by the reference character 132, is adapted for use with a split refractor ring 106 provided with a gap 134 therein at a position adjacent the catch mechanism 132. Thus, the catch mechanism 132 includes a pair of spaced outwardly extending prongs 136 secured individually to each extremities of the split ring 106. The clamping bolt 138 is inserted through a pair of aligned apertures disposed individually in the prongs 136 for the purpose of determining the =width of the gap 134 and consequently the tightness of the retaining ring 106 relative to the refractor 56. In furtherance of this purpose, the extremities of the split refractor ring 106 are initially biased apart to a limited extent. For engagement with the prongs 136, the latching lever 124 is provided with an inwardly extending transverse projection 140 which, in turn, is provided with one or more indents 142 arranged to seat the nibs 144 formed on the underside of the prongs 136.

The rearward end of the retaining ring 106 is biased into engagement with the refractor flange 52 and the reflector flange 46 by means associated with the closure section 116 of the retaining member 104. In furtherance of this purpose, a fiat spring 146, as better shown in FIG. 2 of A the drawings, is secured adjacent the rearward end 120 of the closure section 110. The spring 146 is secured to the closure section 111 by a screw 148 and is furnished at its outward or rearward extremity with a section 150 extending outwardly and rearwardly of the closure section end portion i126. The section 1543 of the spring 146 engages an inward extremity 152 of the bracket 38 or 90, and accordingly, when the refractor ring 106 is moved from an open position to a position adjacent its latched posit-ion, operates to raise the hinge pins 114 a short distance above the lowermost inner portion 154 of the pin retaining cradles 98 and 1110, respectively, as better shown in FIG. 3 of the drawings.

However, when the retaining member 1114 and its refractor ring 166 are moved to their operative position whereat the flanges 46 and 52 of the reflector 16 and the refractor 50 respectively are tightly engaged with the gasket 54 inserted therebetween, the leverage induced at the rearward portions of the aforesaid flanges when the frontal portions thereof are secured by the latching means described in FIG. 4, tends to flex the flat spring 146, and to move hinge pins 114 secured to the closure section 111) toward the bottom portions of the pin cradles 98 and 1%, respectively. However, this movement of the pins 114 applies the biasing force of the flexed spring 146 to the aforesaid rearward portions of the refractor and reflector flanges. Thus, additional biasing force is applied tothe sealing gasket 54 inserted between the reflector 16 and the refractor 50 in order to ensure a dust-free optical system.

Referring now more particularly to FIG. 6 of the drawings, an arrangement is shown therein for accommodating a relatively larger lighting source than that discussed in connection with FIG. 2. In this latter form of the invention, the mounting bracket 26 is substantially similar to the mounting bracket 26 of FIG. 2 but is mounted in a reversed position. A lamp holder or socket 22 is secured to the legs 32 of the bracket 26' in a manner similar to the mounting arrangement illustrated in FIG. 2. When mounted in this fashion, the lamp holder 22 is spaced rearwardly from an aperture 16!) of the reflector 16 but is detachably sealed thereto by means presently to be described. With this arrangement a relatively longer or larger lighting source, indicated generally by the reference character 162, can be inserted in the socket 22. such that a portion of the non-light-emitting segment thereof is inserted through the aperture of the reflector 16- in order properly to engage the lamp holder or socket 22.

One form of the aforementioned detachable sealing means includes a hollow frusto-conical section 164 which is secured to the reflector 16' in communication with the aperture 160 thereof. The rearward end of the frustoconical section terminates in an inwardly extending substantially circular flange 166. The flange 166 thus is arranged to fit relatively closely with the projecting portion 20 of the lamp holder 22' and thereby aids in sup porting the adjacent end of the reflector 16. In furtherance of this purpose, the frusto-conical section 164 is rigidly secured, in this example, to the reflector 16 adjacent-the aperture 160 thereof by meansof the rolled over edge portions indicated generally by the reference character 168. When 'ghe reflector 16 is arranged in its operaitive position,the rearward biasing force applied thereto by thespring 40 (FIG. 4) urges the flange 166 of the .frusto-conical section against the sealing gasket 38 in serted between the collar portion 36 of the lamp holder and the flange 166 of the frusto-conical section 164. It is contemplated that a frusto-conical section (not shown) of a differing-relative axial length than that illustrated in FIG. 6 can be provided for accommodating in cooperation with a different sized mounting bracket (not shown) and a lighting source of another size than that of the sources 162 or 24, within the structural limits of the luminaire housing 10 and wiring container portion 12.

From the foregoing it willbe apparent that novel and eflicient forms of a street lighting fixture or other type of luminaire have been disclosed herein. As indicated heretofore, the luminaire contemplated by the invention is adapted for assembly and disassembly within a minimum of time and effort and with a relatively small number of component parts. Although the novel features of the lighting fixture according to the invention have been discussed primarily in conjunction with a luminaire for street lighting applications, it will be apparent that one or more of these features can be adaptedwith equal facility for use in other types of lighting fixtures.

Therefore, numerous modifications of the invention will occur to those skilled inthe art without departing from the spirit and scope of the invention; Moreover, it is to be understood that certain features thereof can be employed without a corresponding use of other features.

Accordingly, what is claimed as new is:

1. In a luminaire, the combination comprising a housing having a bottom opening, a reflector having a bottom opening mounted in said housing and being generally similarly shaped relative to said housing, said rer ector having an outwardly extending flange secured thereto at a position adjacent its opening, said flange being engageable with said housing at said housing opening, a slipfitter and wiring container portion with an open bottom secured to said housing and communicating therewith, said reflector having an aperture therein communicating with said container portion, lampholding means mounted within said container portion and extending through said aperture in an adjacent portion of said reflector, sealing means mounted on the periphery of said lampholding means extending through said aperture, said sealing means having a flat radial side por-tiorrwhich abuts against the reflector when said lampholding means is in its operative position so as to seal said aperture, a refractor having an upward opening and an outwardly extending flange adjacently surrounding said opening, said reflector and refractor flanges being substantially coextensive, gasketing means disposed betweensaid flanges, and means for clamping said flanges together, with said gasketing means compressed therebetween and adjacent to said housing opening so as to seal said refractor to said reflector.

2. A luminaire comprising a housing having a bottom opening, a reflector having a bottom opening and mounted within said housing, a slipfitter and wiring container portion projecting from said housing and having an open bottom, said reflector having an aperture formed therein at a position adjacent said container portion, lampholding means mounted within said container portion and having a socket part thereof extending through said aperture, sealing means located between said reflector and said lampholding means, a reflector retaining spring secured to a portion of said housing at a position generally opposite from said lampholding means, means on said reflector for detachably engaging said spring, said spring when engaging said reflector urging said reflector against said sealing means and said lampholding means so as to seal the junction between the reflector and the lampholding means at said aperture, a container cover hingedly mounted to the .bdttom of said container portion, a refractor retaining ring secured to said container cover and pivotal therewith, a refrac'tor having an upper opening generally conforming to the bottom opening of said reflector, said refractor being mounted in the retaining ring, mating flanges around both the openings of said reflector and refractor, and means disposed to engage said ring at a position generally opposite from said container cover for securing said cover and said ring in their operative closed positions so that said mating flanges and said aperture sealing means serve to provide a sealed optical system and the bottom of said slipfitter and wiring container portion is closed by said cover.

3. In a luminaire, the combination comprising an ovate shaped housing provided with a bottom opening, an ovate shaped reflector having a bottom opening and being secured Within said housing, a slipfitter and wiring container portion joined to said housing and communicating therewith, said container portion having a bottom opening, a refractor having an upper opening generally coextensive with the bottom opening of said reflector, a refractor retaining ring combined with a container portion bottom closure, mating meansadjacent the peripheries of both said reflector and said refractor, said refract-or mounted in the retaining ring, said closure being hingedly secured to said container portion at the outermost remote end, and means on a section of said ring opposite from said closure for detachably securing said ring to said housing so that when said luminaire is in its operative position said refractor is mated with said reflector and the bottom opening of said slipfitter and wiring container portion is closed.

4. In a luminaire, the combination comprising a housing provided with a bottom opening, a reflector having a bottom opening and being detachably secured within said housing, a slipfitter and wiring container portion joined to said housing and communicating therewith, said container portion having a bottom opening, a refractor having an upper opening generally coextensive with the bottom opening of said reflector, a refractor retaining ring combined with a container bottom closure, said refractor being mounted in the retaining ring, mating flanges around the peripheries of the openings of both said reflector and said refractor, said closure 1 being bingedly secured to said container portion, means disposed to engage said ring at a position oppositefrom said closure for detachably securing said ring and said closure in their operative closed position so that said refractor is mated with said reflector and the bottom opening of said slipfitter and wiring container portion is closed, and flat spring biasing means located on the inner side of the container bottom closure for urging the adjacent section of said retaining ring and its mounted refractor into engagement with said reflector at said operative position.

5, In a luminaire, the combination comprising a housing provided with a bottom opening, a reflector having a bottom opening and being detachably secured within said housing, a slipfitter and wiring container portion joined to said housing and communicating therewith, said container portion having a bottom opening, a refractor having an upper opening generally coextensive with the bottom opening of said reflector, arefractor retaining ring combined with a container portion bottom closure, said refractor being mounted in the retaining ring, mating flanges around the peripheries of the openings of both said reflector and said refractor, said closure being bingedly secured to the outermost end of said container portion, means associated with a section of said ring opposite from said container portion for detachably securing said ring in its operative position so that said refractor is mated with said reflector and the bottom opening of said container portion is closed, and flat spring biasing means located on the inner side ofsaid Wiring container for urging the adjacent section of said retaining ring and its mounted refractor into engagement with said reflector at said operative position, said hinged mounting including a pair of hinge pins secured to said bottom closure and a pair of pin retaining cradles secured to said container portion, said pins being freely mounted'within said cradles.

6. In a luminaire, the combination comprising a housing provided with a bottom opening, a reflector having a bottom opening and being detachably secured within said housing, a slipfitter and wiring container portion joined to said housing and communicating therewith, said container portion having a bottom opening, a refractor having an upper opening generally coextensive with the bottom opening of said reflector, means on said reflector and refractor for sealing the peripheries of the openings of said reflector and refractor together when the luminaire is in its operative position, a refractor retaining ring combined with a container portion bottom closure, said refractor being mounted in the retaining ring, said closure being hingedly secured to said container portion, means associated with a section of said ring opposite from said closure section for detachably securing said ring in its operative position so that said refractor is engaged and sealed with said reflector and the bottom opening of said container portion is closed, and biasing means located on said container portion for urging the adjacent section of said retaining ring and its mounted refractor into engagement with said reflector at said operative position, said biasing means including flat spring means secured to the inner portion of said container closure and cooperating with a projection secured to a transverse wall of said container portion for urging said closure upwardly at the operative position of said closure and retaining ring.

7. In a luminaire, an ovate shaped housing having a bottom opening, an ovate shaped reflector having a bottom opening and readily detachably mounted within said housing, an aperture formed in said reflector, lampholding means mounted adjacent said reflector within said housing, said lampholding means protruding through said aperture in said reflector and supporting one end of said reflector, and spring means engageable with a portion of said reflector generally opposite from said aperture for detachably securing another end of said reflector within said housing.

8. In a luminaire, the combination comprising an ovate shaped housing having a bottom opening, an ovate shaped open bottom reflector readily detachably mounted in said housing, an aperture formed in said reflector, lampholding means mounted in said housing and extending through said aperture in said reflector for supporting one end of said reflector, reflector sealing means located between the reflector and the lampholding means, and spring means mounted within said housing at a position generally opposite said reflector aperture, said spring means cooperating with an indent formed in an adjacent portion of said reflector for detachably securing another end of said reflector within said housing and for unging said reflector against said reflector sealing means to seal said reflector aperture with said lampholding means.

9. In a luminaire, the combination comprising a housing having a bot-tom opening, a reflector having a bottom opening and readily detachably mounted within said hous ing, an aperture formed in said reflector, lampholding means mounted adjacent said reflector within said housing, said lampholding means protruding through said aperture in said reflector and supporting one end of said reflector, reflector sealing means located between the reflector and lampholding means so as to seal the junction between the reflector and the lampholding means at said aperture, and spring means engageable with a portion of said reflector generally opposite from said aperture for detachably securing another end of said reflector within said housing.

10. In a luminaire, the combination comprising an ovate shaped housing provided with a bottom opening,

an ovate shaped reflector having a bottom opening and mounted within said housing, an aperture formed in said reflector, a lighting source supporting means mounted within said housing adjacent said aperture formed in said reflector, a generally tubular section secured to said reflector and communicating with said reflector aperture, said section extending to said supporting means for engagement, an opening in the outer. end of said tubular section, a sealing means located adjacent said tubular section opening between said reflector and said lighting source supporting means, and means detachably engageable with a portion of said reflector generally opposite from said aperture for removably securing said reflector within said housing and for urging said reflector and said tubular extension towards said supporting means to engage said reflector sealing means so as to seal the junction between said tubular extension and said supporting means at said tubular section opening.

11. In a luminaire, the combination comprising an ovate shaped housing provided with a bottom opening, an ovate shaped reflector having a bottom opening and readily detachably mounted Within said housing, a slipfitter and wiring container portion joined to said housing and communicating therewith, said reflector having an aperture formed therein at a position adjacent said portion,

a hollow section secured to the reflector in communication with said aperture and extending outwardly from said reflector into said portion, inturned flange means on the end of said section spaced from the reflector, lampholding means mounted in said portion so as to have a socket part thereof extending into said end of the section and have another part thereof including a sealing means abutting the inturned flange means of said section when in an operable position, and resilient means detachably engageable with a portion of said reflector generally opposite from the apertured end thereof for removably securing said reflector within said housing and tor urging said reflector and said section towards said lampholding means to engage said sealing means.

12. In a luminaire for street lighting employing a source of light supported at one end and supplied from a power source, in combination, a refractor, an inverted bowlshaped reflector sealed with the refractor, said reflector having an opening in one end thereof, an inverted generally U-shaped hood member located adjacent said one end of said reflector and extending outwardly therefrom, a socket for the light source mounted in and sealing said opening in the reflector, and terminals carried by the socket for connecting it to the power source, said ocke being located inside the reflector and the terminals being located outside the reflector for ready engagement with glectric wiring leads extendible through said hood mem- 1 er.

13. In a luminaire, the combination comprising an ovate shaped housing having a bottom opening, :an ovate shaped open bottom reflector readily detachably mounted in said housing, an aperture formed in said reflector, lampholding means mounted in said housing and extending through said aperture and supporting one end of said reflector, reflector sealing means located between the reflector and the lampholding means, and resilient means secured to one of said housing and said reflector at a position generally opposite said reflector aperture, said resilient means engaging an adjacent portion of the other of said housing and said reflector for detachably securing another end of said reflector within said housing and for urging said reflector against said reflector sealing means to seal said reflector aperture with said lampholding means.

14. In a luminaire, the combination comprising an ovate shaped housing having a bottom opening, an ovate shaped open bottom reflector readily detachably mounted in said housing, an aperture formed in one end of said reflector, lampholding means mounted in said housing and extending through said aperture and supponting the one end of said reflector, sealing means located between the reflector and the lampholdingmeans, and resilient means for detachably seciiring another end of said reflector within said housing and for urging said reflector against said sealing means to seal said reflector aperture with said'lampholding means.

15. In a lurninaire, the combination comprising a housing having a bottom opening, a reflector having a bottom opening, said reflector being mounted in said housing and having the same general Configuration as said housing, said reflector having an outwardly extending flange located adjacent its opening, a slipfltter and wiring container portion having an open bottom and extending from said housing so as to communicate therewith, said reflector having an aperture communicating with said container portion, lampholding means mounted within said container portion and extending through said reflector aperture, sealing means located around the periphery of said lampholding means, said sealing means having a flat radial side portion which is engaged between said reflector and said larnpholding means when the reflector in its operative position so as to seal said aperture, a refractor having upward opening and an outwardly extending flange adjacently surrounding said opening, said reflector and'refiractor flanges being substantially coextensive, and means for clamping said flanges together so as to seal said jrefractor to said reflector.

1 6. Ina luminaire, the combination comprising a generally ovate shaped housing provided with a bottom opening, an ovate shaped reflector having a bottom opening 39 in secured to and generally located within said housings eflec o h n an u p ope in generally coextensive with the bottom opening of said reflector, an

'elongated retaining ring hingedly secured at one of its ends to said lnrninaire, said refractor mounted in said retaining ring, mating flanges around the peripheries of the openingsof both said reflector and said refractor, means disposed to engage said retaining ring generally at its'ot-her end to said'lumin'aire for securing 'said retain- 12 ing ring in its operative closed position, means for sealing'ly engaging said mating flanges in said operative closed position to prevent nnde'sirable' material from enter ing therebetween.

'17. In a luminaire, the combination comprising an elongated generally dish-shaped housing provided with a bottom opening and having an inverted generally U-shaped hood portion joined adjacent one end of said housing, a generally dish-shaped reflector having a bottom opening and being secured to and located within the dish-shaped portion of said housing, a refractor having an upper opening generally coextensive with the bottom opening of said reflector, an elongated retaining ring hingedly secured at one of its ends to the end of said hood member remote from said reflector, said refractor being mounted in said retaining ring, mating flanges around the peripheries of the openings of 'both said reflector and said refraotor, the outer periphery of said retaining ring being generally coextensive with the bottom opening of said housing including said hood portion, and means disposed to engage said retaining ring generally at its other end to said luminaire for securing said retaining ring in its operative closed position, said mating flanges being brought into a juxtaposed relationship and the bottom opening of said housing and its hood portion being generally closed by said retaining ring in the operative closed position thereof.

References Cited in the file of this patent UNITED STATES PATENTS 1,240,452 Hotchkin Sept. 18, 1917 1,761,528 Fyrberg June 3, 1930 2,304,208 Rolph Dec. 8, 1942 2,732,483 Elmer Jan. 24, 1956 2,763,774 Beach et a1 Sept. 18, 1956 2,778,929 Loehr Jan. 22, 1957 2,829,243 Stonehill Apr. 1, 1958 2,840,690 Harling June 24, 1958 2,849,574 Burns et al Aug. 26, 1958 r err- 1, a."

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