Bollard luminaire

Abstract

The improved bollard luminaire has an upwardly directed, elliptical main reflector and a lamp “nested” within such reflector and positioned at or near its lower focal point. An upper cone-shaped reflector receives light from the main reflector and directs it laterally through a transparent lens element. Such element provides a 360° lateral light opening unobstructed by wiring, support posts or the like. Light reflected through such opening is relatively sharply focused along an axis about 70° from vertical. Unreflected light from the lamp which “misses” both reflectors also provides a degree of “uplighting,” often found useful for aesthetic purposes.

1. A bollard luminaire including:
 a tubular housing terminating upwardly in an annular lip;  
   a lens element having an annular bottom portion, the bottom portion being secured to the housing at the annular lip and providing a  360° lateral light opening thereabove;  
 an upwardly directed main reflector having a top rim below such opening;  
 a lamp positioned below such rim; and  
 an upper reflector receiving  secured proximate the lens element, the upper reflector positioned and configured to receive light from the main reflector and reflecting  reflect substantially all such received light at an angle less than 90° from vertical;  
 
       whereby such reflected light is directed laterally through such opening for ground illumination. 
     
     
       2. The luminaire of  claim 1  wherein such main reflector has an upper focal point. 
     
     
       3. The luminaire of  claim 2  wherein the upper focal point is positioned above the upper reflector, whereby light from the main reflector is received on the upper reflector in a convergence area. 
     
     
       4. The luminaire of  claim 3  wherein:
 such main reflector is elliptical and has a lower focal point; and  
 the lamp is substantially at such lower focal point whereby such convergence area on the upper reflector is ring-like.  
 
     
     
       5. The luminaire of  claim 1  wherein the reflected, laterally directed light is greatest at an angle of about 70° from vertical, thereby providing illumination over a broad 360° area. 
     
     
       6. The luminaire of  claim 1  further including a one-piece unobstructed lens element having a light occluding top and a coating on an interior surface of such lens element, whereby such coating is protected from physical damage. 
     
     
       7. The luminaire of  claim 6  wherein such lens element includes a UV inhibitor whereby such coating is protected from fading. 
     
     
       8. The luminaire of  claim 1  wherein:
 such main reflector is elliptical and has a lower focal point; and  
 the lamp is substantially at such lower focal point whereby light emitted by such lamp is reflected upwardly onto the upper reflector in a ring-like convergence area.  
 
     
     
       9. The luminaire of  claim 1  wherein such main reflector is elongate and extends upwardly to the annular top lip to terminate at the lateral light opening. 
     
     
       10. The luminaire of  claim 9  wherein the upper reflector has a downwardly- facing conical surface and includes a downwardly - facing reflective surface configured so that the reflected light is reflected in a laterally downward direction.   
     
     
       11. The luminaire of  claim 1  wherein the upper reflector has a downwardly- facing conical surface and includes a downwardly - facing reflective surface configured so that the reflected flight is reflected in a laterally downward direction.   
     
     
       12. A bollard luminaire including:
   a tubular housing terminating in an annular lip;        a lens element having an annular bottom portion, the bottom portion being secured to the housing at the annular lip and providing a  360 ° lateral light opening thereabove;        a mounting frame;        an upwardly directed main reflector and a socket each separately secured with respect to the mounting frame, the main reflector having a top rim below such opening;        a socket secured with respect to the mounting frame;        a lamp in the socket, the socket and lamp being positioned such that the lamp is positioned below the rim; and        an upper reflector secured proximate the lens element, the upper reflector positioned and configured to receive light from the main reflector and reflect such light at an angle less than  90 ° from vertical      
       
         whereby such reflected light is directed laterally through such opening for ground illumination. 
       
     
     
       13. The luminaire of  claim 12  wherein such main reflector has an upper focal point. 
     
     
       14. The luminaire of  claim 13  wherein the upper focal point is positioned above the upper reflector, whereby light from the main reflector is received on the upper reflector in a convergence area. 
     
     
       15. The luminaire of  claim 14  wherein:
   such main reflector is elliptical and has a lower focal point; and        the lamp is substantially at such lower focal point whereby such convergence area on the upper reflector is ring - like.     
     
     
       16. The luminaire of  claim 12  wherein the reflected, laterally directed light is greatest at an angle of about  70 ° from vertical, thereby providing illumination over a broad  360 ° area. 
     
     
       17. The luminaire of  claim 12  further including a one- piece unobstructed lens element having a light occluding top and a coating on an interior surface of such lens element, whereby such coating is protected from physical damage.   
     
     
       18. The luminaire of  claim 17  wherein such lens element includes a UV inhibitor whereby such coating is protected from fading. 
     
     
       19. The luminaire of  claim 12  wherein:
   such main reflector is elliptical and has a lower focal point; and        the lamp is substantially at such lower focal point whereby light emitted by such lamp is reflected upwardly onto the upper reflector in a ring - like convergence area.     
     
     
       20. The luminaire of  claim 12  wherein such main reflector is elongate and extends upwardly to the annular top lip to terminate at the lateral light opening. 
     
     
       21. The luminaire of  claim 20  wherein the upper reflector has a downwardly- facing conical surface and includes a downwardly - facing reflective surface configured so that the reflected light is reflected in a laterally downward direction.   
     
     
       22. The luminaire of  claim 12  wherein the upper reflector has a downwardly- facing conical surface and includes a downwardly - facing reflective surface configured so that the reflected light is reflected in a laterally downward direction.