EP0118574B1 - Bloc d'éclairage pour panneau d'affichage - Google Patents

Bloc d'éclairage pour panneau d'affichage Download PDF

Info

Publication number
EP0118574B1
EP0118574B1 EP83102336A EP83102336A EP0118574B1 EP 0118574 B1 EP0118574 B1 EP 0118574B1 EP 83102336 A EP83102336 A EP 83102336A EP 83102336 A EP83102336 A EP 83102336A EP 0118574 B1 EP0118574 B1 EP 0118574B1
Authority
EP
European Patent Office
Prior art keywords
lamp
billboard
reflector
light
refractor
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
Application number
EP83102336A
Other languages
German (de)
English (en)
Other versions
EP0118574A1 (fr
Inventor
Herbert Arnold Odle
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.)
Johns Manville Corp
Original Assignee
Manville Corp
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 Manville Corp filed Critical Manville Corp
Priority to DE8383102336T priority Critical patent/DE3380424D1/de
Priority to EP83102336A priority patent/EP0118574B1/fr
Priority to DE198383102336T priority patent/DE118574T1/de
Priority to AT83102336T priority patent/ATE45640T1/de
Publication of EP0118574A1 publication Critical patent/EP0118574A1/fr
Application granted granted Critical
Publication of EP0118574B1 publication Critical patent/EP0118574B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/02—Signs, boards, or panels, illuminated by artificial light sources positioned in front of the insignia

Definitions

  • This invention relates to a lighting fixture for mounting in front of a large panel such as an advertising billboard and for illuminating said panel, comprising a lamp contained within a lamp housing, means attached to the lamp for lighting the lamp, a reflector positioned on one side of the lamp and designed to reflect the light radiating from the lamp, and a refractor positioned on the lamp housing to totally enclose the lamp from outside weather elements.
  • Such lighting fixtures are used in illuminating large poster panels such as an outdoor advertising billboard sign of the type that is generally 3,7 m (12 feet) high and 7,3 m (24 feet) long.
  • prior art illumination would be accomplished by a pair of 2,4 m (8 feet) long fluorescent units positioned end-to-end either below or above the panel.
  • Other types of prior art lighting would include a grouping of single incandescent units positioned along the top or bottom edges of the panel.
  • the triangular shaped dark corner areas in the lower corner of the panel resulted from positioning of the lighting fixture at the lower central portion of the panel and it is clear that with the lighting fixture positioned at the upper central portion of the panel, the same problem of lighting the corner area would be present with the exception that the triangular shaped corners would appear in the upper right and left corner of the outdoor advertising sign.
  • a lighting fixture of the type mentioned at the beginning is disclosed in US-A-4 037 341 and comprises a support or housing, a light source supporting socket, a light source, a reflector and a refractor. It is required that both the side sections and the front section of the support, each including flat top edges, lie in a plane (see plane I in Fig. 6) common with the light source. This design results in considerable difficulties in fastening the light source. ' Therefore, the lamp is positioned in such a manner that its longitudinal axis is parallel to the surface of the panel to be illuminated.
  • the light fixture of US-A-4 037 341 is designed to illuminate a square panel. In the case of a rectangular panel uniformity of illumination of the panel is not sufficiently attained. Particularly the lower corner areas of the panel can remain darker than the central portion, the more the panel is rectangular and elongated.
  • US-A-3 524 051 relates to a lighting where transmission of light through a panel toward an approaching motorist is to be avoided.
  • the light rays are first refracted, then reflected twice and finally refracted. This results in a re-direction of the light rays exactly in the opposite direction which is based on parallel reflecting prisms of panel.
  • a light ray 132 is not directed in the parallel and opposite direction. It is generally not possible to redirect light at an angle larger than 45° to 50° by straight refraction or deflection of light. Accordingly a second reflection of light rays is required in order to redirect light in angles by 100° to 120°, which results in loss of light power.
  • US-A-4. 148 561 is concerned with producing light reflective systems particularly adapted for being utilised in highway marking panels and advertising panels. By use of an ovoid body and of microspheres serving as secondary reflective means, light is reflected in parallel rays.
  • the invention is to solve the problem of providing uniform illumination over the entire panel or billboard, particularly over a very elongated panel even in the case that the panel has a horizontal length approximately twice as long as its vertical length.
  • a lighting fixture of the type described at the beginning which is characterised in that the lamp is approximately horizontally positioned within the lamp housing in direction to the panel, that the reflector has a first generally linear translated bottom parabolic surface and further two side surfaces formed parabolic in one direction through a horizontal section of the side surface, and that the reflector comprises in part a combination of prism elements designed for three-phase light control of stray light, which permits a refraction, reflection and a further refraction of the stray light originally radiating from the lamp in directions unuseful for lighting the panel.
  • the lighting fixture according to the invention is designed for mounting in front of a large outdoor advertising panel.
  • the fixture is capable of providing uniform illumination across the entire panel length even when the panel has a horizontal length approximately two times as long as its vertical length.
  • the new and novel lighting fixture may be mounted in the central portion of the advertising sign either above or below the sign as hereinafter described.
  • the new and novel lighting fixture comprises a generally horizontally positioned lamp contained within a lamp housing which is mounted on the outside of the advertising sign.
  • the housing contains a lamp energized by known means for lighting the lamp and also contains a reflector which is positioned on one side of the lamp and is designed to reflect the light radiating from the lamp.
  • the reflector has a first generally linearly translated parabolic surface and further has two side surfaces formed parabolic in one direction through a horizontal section of the side surface.
  • a refractor is positioned over the lamp in the lamp housing to totally enclose the lamp from outside weather elements and the refractor comprises in part a combination of prism elements which are designed for three phase light control of stray light.
  • the three phase light control permits a refraction, a reflection and finally a refraction of the stray light radiating from the lamp.
  • the unit is able to illuminate the opposite adjacent corners of the billboard to provide a much more uniform light distribution pattern over the entire elongated billboard surface than has been heretofor possible with prior art devices.
  • Yet another object and advantage of the invention is to provide a simple lighting fixture which is capable of being used as a single fixture and is capable of being positioned in the upper or lower area of a billboard with the fixture combining a new and novel reflector and refractor for directing the light in pre-determined manners to achieve more uniform illumination over the panel.
  • the lighting fixture comprises a lamp housing 16 formed as shown in the figures and having a refractor 18 in position on the housing 16 in such a manner to totally enclose the lamp 20 contained within the housing 16.
  • the lighting fixture 10 may be mounted in the position shown in Fig. 1 and may also be mounted on the upper portion of the billboard 12 in the central area in a manner similar shown in the mounting shown in Fig. 1.
  • the area to be lighted by the lamp 20 would include the entire surface 22 shown in Fig. 1 in as uniform a manner as possible without eye disturbing lighting contrasts in the various areas of the panel.
  • the lamp housing is advantageously positioned approximately 0,9 to 1,2 m (3 to 4 feet) from the billboard surface.
  • the lighting fixture 10 In positioning the lighting fixture 10 it has been found from experimentation that it would be preferably positioned between 1,1 to 1,2 m (3,5 to 4 feet) from the billboard as shown by the arrow 24 and also would be preferably positioned approximately 0,3 m (1') below the billboard edge 26 as shown by the arrow 28. When positioned thusly it has been found that the area to be lighted 22 would have a much more uniform illumination thereby providing a more pleasant eye appealing advertising sign placed on the surface area 22.
  • Fig. 3 of the drawing there is shown in detail, a cross-sectional view, taken along 3-3 of the Fig. 1, showing the interior of the Applicant's lighting fixture 10.
  • a lamp 20 is positioned in a lamp socket 30 so as to be approximately horizontally positioned within the lamp housing 16.
  • the lamp 20 is not shown in Fig. 3 and also the means for lighting the lamp such as the associated wiring and power necessary for the high intensity discharge type lamp is not shown.
  • a reflector 32 is positioned on one side of the lamp and is designed to reflect the light radiating from the lamp hereinafter described.
  • the reflector 32 has a first generally linear translated parabolic bottom surface 34 and has two side surfaces 36 and 38 which are formed parabolic in one direction through a horizontal section of the side surface.
  • the generally linear parabolic bottom surface 34 is formed in the configuration shown in Fig. 3 and also comprises the substantially parallel end surfaces 40 and 42 shown in Fig. 3 and also more clearly in Fig. 5 of the drawing.
  • a refractor 18 is positioned on the lamp housing 16 to totally enclose the lamp 20 from outside weather elements.
  • the refractor 18 comprises a combination of prism elements to be described more fully hereinafter which are designed for three phase light control of stray light.
  • the refractor 18 is designed to refract, reflect and finally to refract the stray light radiating from the lamp 20.
  • the prism elements are formed on the inside surface 44 of the refractor with the outside surface 46 being formed relatively smooth in order to allow the refractor 18 to be self cleaning.
  • the refractor 18 is positioned within the lamp housing 16 and is held in place on a gasket 48 by means of a plurality of bolts 50 through a plurality of tapped holes formed in the flange 52 of the housing 16.
  • the housing 16 also contains a shield 54 which is designed to partially enclose the refractor 18 and to shield stray light from the rear portion of the refractor which will not be able to be redirected by the refractor prisms.
  • the reflector 32 is fixedly held inside the lamp housing 16 by means of a screw 56 tapped in a boss 58 on the inside area 60 of the lamp housing 16.
  • the entire refractor 18 along with the shield 54 is capable of being pivoted upwardly about the pins 62 whenever it is desirous of having access to the inside of the lamp housing.
  • the refractor 18 and the shield 54 may be pivoted upwardly in the direction shown by the arrow 64 to provide the interior access to the lighting fixture.
  • Fig. 4 and Fig. 5 of the drawings there is shown positioned inside the reflector 32 the lamp 20 and showing how the various rays of the lamp are controlled to light various portions of the billboard panel. It can be seen in Fig. 4 how a ray 66 would be reflected off the end surface 40 in the direction shown by the arrow 68 to lightthe bottom of the poster panel. In a similar manner a forward directed light ray 70 would be reflected off the bottom surface 34 to be directed upwardly in the direction of the arrow 72 to light the top of the poster panel.
  • Figs. 6, 7 and 8 there will be shown in more detail how the edges of the poster panel are lighted and more particularly how the triangularly shaped corner areas of the panel are lighted.
  • Fig. 8 there is shown a side view of the surface area 22 to be lighted.
  • the cross section area 78 shown in Fig. 8 is the approximate area which is lighted by the bottom surface 34 of the Applicant's reflector 32 and represents the area that prior art type of reflector lights were capable of lighting.
  • the triangular shaped areas 80, 82, 84 and 86 represent the areas which are lighted by side surfaces 36 and 38 of the Applicant's reflector 32.
  • Fig. 6 and 7 there can be seen how the reflector side surfaces 36 and 38 are utilized to accomplish the lighting of the corner areas.
  • Fig. 6 there can be seen the plan view showing the side surfaces 36 and 38 and how they are utilized to direct the rays 92 and 94 in the direction shown by the arrows 96 and 98 to the left corner edges of the billboard 12.
  • the rays directed to the side surface 36 have not been shown in Fig. 6 and it should become apparent that the side surface 36. would direct light rays to the right edges of the billboard 12.
  • Fig. 7 is an end view of the Applicant's lighted billboard showing the positioning of the side surfaces 36 and 38 how the ray 100 from the lamp 20 would be directed against the sides of the side surface 38 of the reflector 32 to be redirected in the direction shown by the arrow 102.
  • the ray 104 would be redirected to light the central portions of the edges of the billboard in the direction of the arrow 106.
  • the ray 108 would be redirected by the side surface 38 in the direction by the arrow 110 to illuminate the upper portion of the triangular edges of the billboard.
  • the left side surface 36 would be used to redirect the rays from the lamp 20 to light the right side of the billboard 12.
  • the bumps 110 and 112 may be utilized to eliminate radial streaks 114 and 116 which are shown in Fig. 7 of the drawing by the dashed lines.
  • the bumps 110 and 112, shown in Fig. 5 of the drawing would be formed by truncated spheres having a +10° or -10° slope upwardly and would be formed as upward positioned bumps which provide a +20° or -20° light dispersion on each side of the radial streak area 114 and 116 to thereby eliminate the radial streak.
  • any horizontal plane passing through the end surfaces 40 and 42 will yield an intersection approximating a parabola with its focus atthe light center (L. C.) and its axis pointing towards the edge of the billboard sign of the end of the billboard sign opposite the reflector end.
  • a crossover occurs and this is illustrated in Fig. 6 of the drawing by the angle shown by the arrow 118 which would be approximately 66° when the housing is positioned as hereinbefore described.
  • the vertical distribution of the light along the edges 120 and 122 of the billboard sign is accomplished through the curvature of the reflector 32 in its vertical planes.
  • the top edge of the vertical planes directs the lighttothe bottom corners of the sign and the bottom edge of the reflector sections directs the lightto the top edge 124of the billboard sign.
  • Approximately 30% of the vertical section is devoted to lighting the bottom corners of the sides since this area is the hardest to light due to light having to exit glass at extremely high angles of incidence and dueto physical restrictions often not permitting the light to get there from a mechanical constraint standpoint.
  • the remainder of the side panel areas representing 70% of said side panels are designed to evenly tight the entire height of the edge of the sign.
  • the bottom boundary of the reflector side surfaces 36 and 38 is determined by the design of the bottom surface 34 and end surfaces 40 and 42 of the bottom surface 34.
  • the top boundary is contoured to prevent interference with direct and reflected light which is utilized on the sign surface 22.
  • the refractor 18 is designed with a combination of prism elements which are designed for three phase light control of stray light to redirect the stray light to the billboard panel.
  • the refractor 18 could be considered an optical component of the luminaire whereby its use, the luminous flux from the light source and, in some cases from the reflector, is redirected in varying amounts to achieve a final high degree of uniformity of illumination on the poster panel.
  • the outside surface 46 of the refractor 18 has been formed relatively smooth so that it would be totally self cleaning.
  • the inside surface 44 of the refractor 18 is then devoted to the optical control desired. Sections of the refractor may be left plain where directed light is not desired or required.
  • Fig. 10 of the drawing there is shown a cross sectional view taken along line 10-10 of Fig. 3 showing the three phase light control by the use of the various prism elements of the refractor 18.
  • the entire surface of the refractor was broken into squares and the light going through each square was analyzed and if needed was redirected by order of the various prisms on the inside surface of the refractor.
  • this A 1 ray hits surface S 2 of the prism.
  • This S 2 surface is approximately vertically oriented and the ray in the glass hits the su rface S 2 and reflects such that the angle of incidence "i", shown by the arrow 134 in respect to the normal to S 2 (label N S 2 ) is equal to the angle of reflection "r” shown by the arrow 136 as an angle in the glass G2.
  • the angle in the glass G2 represented by the numeral 138 then strikes the top surface of the refractor S 3 represented by the numeral 130 and is transmitted out and refracted in the process as the ray A 2 shown by the numeral 140.
  • the ray A 2 is of such an angle that i strikes the poster panel in a location designed to improve the uniformity of light on the poster panel and to improve utilization of lig ht on the sign.
  • the angle A 2 depends upon the angle at which G2 strikes the normal to the surface S 3 and is calculable by Snells law governing refraction of light as it enters or leaves the media with varying indices of refraction. Air is approximately 1.0 index of refraction, and glass is approximately 1.5 index of refraction.
  • n 1 and n 2 are the index of refraction of medium 1 and medium 2 respectively. It should be noted that A1 does not have to be perpendicular to the surface S 1 , but the whole prism structure, including the surface S 1 and surface S 2 must be so designed so that the existing ray A 2 goes in the right direction. The closer A 1 is perpendicularly with S 1 , the higher the efficiency of the prismatic structure.
  • Lateral control of the before described light control is accomplished by calculating the appropriate prism path or direction of proper lateral placement of the existing A 2 on the poster panel.
  • Proper vertical placement of the light on the poster panel is accomplished by varying the depths of the prisms which, in effect, means varying the angle between the prism face S 1 and the prism face S 2 .
  • Fig. 9 of the drawing there is shown a plan view of of the Applicant's refractor 18.
  • the plurality of prism elements will now be described and the process for redirecting the stray light resulting in the various sections shown in the Fig. 9 drawing will be seen.
  • the section A prism is positioned approximately 381 0 as shown by the angle 142 and the prism size would be approximately 5 cmx5 cm (2"x2") as shown by the numerals 144 and 146.
  • the prism section B would be positioned at an angle of approximately 29° as shown by the angle 148 in the drawings.
  • the prism section B would also be sized approximately 5 cmx5 cm (2"x2") as shown by the numerals 144 and 150.
  • the prism section C would be angled approximately 14° as shown by the angle 152 and the prism section would be sized approximately 5 cmx5 cm (2"x2") as shown by the numerals 144. and 154.
  • Prism section E would be angled approximately 35.5° as shown by the angle 156 and would also be sized approximately 5 cmx5 cm (2"x2") as shown by the numeral 158 and 146.
  • the prism section D would be formed parallel to the front and rear edges of the refractor as shown in Fig. 9.
  • the prism section F would be angled approximately 16° as shown by the angle 160 and would also be sized approximately 5 cmx5 cm (2"x2") as shown by the numeral 158 and 150.
  • the prism section G and H would be positioned as shown in the drawing approximately parallel to the ends of the refractor mold and would also be sized approximately 5 cmx5 cm (2"x2") as shown by the numerals 158, 154 and 162.
  • Section I prisms would be angled approximately 15° as shown by the numeral 164 and that prism section would be sized approximately 5 cmx5 cm (2"x2") as shown by the numeral 146 and 166.
  • the section K group of prisms and the P group of prisms are positioned approximately parallel to the front face of the mold as shown.
  • the section K would be sized approximately 10 cm x 18 cm (4"x7") as shown by the numerals 167 and 169.
  • the section P would be sized approximately 5 cmx9,5 cm (2"x3.75") as shown by the numerals 166 and 171.
  • the area shown by the numeral 170 may remain plain and unpolished as shown.
  • Section L prisms would be formed approximately parallel to the front and rear edges of the refractor and would be approximately 12,5 cm (5") long by 20,5 cm (8") long as shown by the numerals 176 and 178.
  • section M group of prisms would be formed were shown in Fig. 9 of the drawing approximately parallel to the section L prisms and would be approximately 6,5 cmx10 cm (2s"x4") in size as shown by the numerals 180 and 182.
  • the section Q prisms would be positioned as shown adjacent to the prism groups M, N and J.
  • a front wall grouping of prisms section N would be formed as shown in the Fig. 9 drawing and a side section of prisms J would also be formed in the manner shown.
  • the remaining portion of the side wall of the refractor would consist of section D prisms formed as designated on the drawing.
  • a radial corner cut set of prisms shown by the numeral 184 fills in one pair of corners and the remaining wall section shown by the numeral 186 would be sandblasted to a heavy texture as is known in the art.
  • a prism section O would be cut parallel to the line 175 as shown in Fig. 9.
  • prisms section A, B, C, D, E, F, G and H are utilized for the stray light control and are designed for the three phase light control hereinbefore described consisting of refraction, reflection and refraction as related to Fig. 10 of the drawings.
  • the other half of the refractor as shown in Fig. 9 would be a duplicate of Fig. 9 as shown.
  • Fig. 11 of the drawing there is shown a side view, taken alone line 11-11 of Fig. 9, showing the plurality of prism elements positioned along the sides of the refractor 18. It can be seen in Fig. 11 how the section H prism elements run into the side surface adjacent to the section D prisms which also run into the upper surface as shown in Fig. 9. Adjacent to section D prisms would be a grouping of prism elements section J shown also in Fig. 9 which is utilized to smooth out light passing through that section of the prism. In the similar manner section K shown in Fig. 9 is also used to smooth out light caused by imperfections in reflection or in the tooled surface of the refractor. Section L shown also in Fig.
  • Fig. 12 and Fig. 13 there is shown an analysis of the footcandles developed by the Applicant's new and novel lighting fixture in comparison to the lux (footcandles) developed by a prior art type fixture.
  • the Applicant's fixture is shown in Fig. 12 of the drawing with a competitor's prior art fixture shown in Fig. 13.
  • the Applicant's test data was taken from a test numbered 34,618 having the tested luminaire placed 1,2 m (4') out and 0,3 m (1') down from the bottom of the billboard structure.
  • the competitors's data was taken from a test numbered 32,489 with the competitor's luminaire placed 1,2 m (4') out from the sign.
  • the average lux (foot candles) for the Applicant's luminaire as shown in Fig. 12 was 307 (28.5) in comparison to the competitor's average lux (foot candle) of 237 (22).
  • the Applicant's maximum lux (foot candle was 1013 (94.12) as compared to the maximum lux (foot candle) of 1098 (102) for the competitor.
  • a minimum lux (foot candle) value of 47 (4.37) was tested in the Applicant's luminaire with a minimum lux (foot candle value) of 0 in the competitor's.
  • the maximum to minimum lux (foot candle) ratio of the Applicant's luminaire was 21.53 and the maximum to average ratio was 3.35 with the average to minimum ratio being 6.42.
  • the maximum to minimum lux (foot candle) of the competitor's luminaire was 1830 with a maximum to average ratio of 5 and average to minimum ratio of 405. A perfect ratio would be 1 when comparing these numbers.
  • the Applicant's luminaire with its new and novel features provides a more uniformally lighted billboard surface so that the sign placed upon the billboard surface would appear to be more uniformly lighted without great variations in luminance which is the light leaving the surface of the billboard.
  • the Applicant's new and novel invention a single lighting fixture which is capable of more evenly lighting a billboard panel of the type having a horizontal length approximately two times as long as its vertical length.
  • the Applicant's device utilizes a combination of a high intensity discharge lamp positioned in a lamp housing with a new and novel reflector and refractor positioned within the housing to achieve the desired lighting in the various areas of the billboard.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (9)

1. Bloc d'éclairage (10) destiné à être monté devant un grand panneau (12) tel qu'un panneau publicitaire et à éclairer ledit panneau (12), comprenant
une lampe (20) contenue dans un boîtier (16) de lampe,
des moyens (30) reliés à la lampe (20) pour allumer la lampe (20),
un réflecteur (32) placé sur un premier côté de la lampe (20) et conçu pour réfléchir la lumière rayonnant de la lampe (20), et
un réfracteur (18) placé sur le boîtier (16) de la lampe pour renfermer totalement la lampe (20) vis-à-vis des éléments atmosphériques extérieurs, caractérisé en ce que
la lampe (20) est positionnée à peu près horizontalement à l'intérieur du boîtier de lampe en direction dudit panneau (12),
le réflecteur (32) présente une première surface parabolique inférieure translatée globalement linéaire (34) et deux autres surfaces latérales (36, 38) formées de façon parabolique dans une direction passant par une section horizontale de la surface latérale, et
le réfracteur (18) comprend en partie une combinaison d'éléments de prismes conçus pour la commande lumineuse en trois phases de la lumière parasite, qui permet une réfraction, une réflexion et une autre réfraction de la lumière parasite rayonnant initialement de la lampe (20) dans des directions inutiles pour éclairer le panneau.
2. Bloc d'éclairage selon la revendication 1, dans lequel le boîtier (16) de lampe est disposé à peu près horizontalement à la partie centrale du panneau (12), à l'écart de la surface du panneau.
3. Bloc d'éclairage selon la revendication 1 ou 2, dans lequel plusieurs saillies sphériques (110, 112) sont formées dans l'intérieur de la surface inférieure (34) du réflecteur afin d'éliminer les raies radiales sur la surface du panneau.
4. Bloc d'éclairage selon l'une quelconque des revendications 1 à 3, dans lequel la zone éclairée par la première surface parabolique inférieure (34) du réflecteur (32) s'étend dans la partie centrale (78) du panneau (12) et la zone éclairée par les deux surfaces latérales (36, 38) du réflecteur s'étend dans les angles (80, 82, 84, 86), de forme globalement triangulaire, du panneau.
5. Bloc d'éclairage selon la revendication 4, dans lequel plusieurs protubérances (110, 112) sont formées sur l'intérieur du réflecteur (32) pour éliminer les raies radiales dans le panneau (12) entre la partie éclairée centrale (78) et entre les deux parties d'angle (80, 82, 84, 86), de forme globalement triangulaires, du panneau.
6. Bloc d'éclairage selon la revendication 5, dans lequel plusieurs saillies sphériques (110, 112), formées dans la surface du réflecteur, sont réalisées sous forme de sphères tronquées ayant une pente de +10° et -10°, donnant une dispersion de la lumière de +20° ou de -20° de chaque côté de la ligne entre la partie éclairée centrale (78) du panneau et les deux parties d'angle (80, 82, 84, 86), de forme globalement triangulaire, du panneau.
7. Bloc d'éclairage selon l'une quelconque des revendications 1 à 6, dans lequel la combinaison d'éléments de prismes sur le réfracteur (18) est placée à la partie centrale arrière et le long de chaque côté de la surface du réfracteur.
8. Block d'éclairage selon l'une quelconque des revendications 1 à 7, dans lequel la surface extérieure (130) du réfracteur (18) est réalisée sous la forme d'une surface globalement lisse pour être auto-nettoyante.
9. Bloc d'éclairage selon l'une quelconque des revendications 1 à 8, dans lequel le boîtier (16) de lampe est placé à une distance d'environ 0,9 à 1,2 m (3 à 4 feet) de la surface du panneau et est placé à une distance d'environ 0,3 m (1 foot) d'un bord allongé (26) de la surface du panneau.
EP83102336A 1983-03-10 1983-03-10 Bloc d'éclairage pour panneau d'affichage Expired EP0118574B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8383102336T DE3380424D1 (en) 1983-03-10 1983-03-10 Poster panel lighting fixture
EP83102336A EP0118574B1 (fr) 1983-03-10 1983-03-10 Bloc d'éclairage pour panneau d'affichage
DE198383102336T DE118574T1 (de) 1983-03-10 1983-03-10 Beleuchtungskoerper fuer reklametafel.
AT83102336T ATE45640T1 (de) 1983-03-10 1983-03-10 Beleuchtungskoerper fuer reklametafel.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83102336A EP0118574B1 (fr) 1983-03-10 1983-03-10 Bloc d'éclairage pour panneau d'affichage

Publications (2)

Publication Number Publication Date
EP0118574A1 EP0118574A1 (fr) 1984-09-19
EP0118574B1 true EP0118574B1 (fr) 1989-08-16

Family

ID=8190335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102336A Expired EP0118574B1 (fr) 1983-03-10 1983-03-10 Bloc d'éclairage pour panneau d'affichage

Country Status (3)

Country Link
EP (1) EP0118574B1 (fr)
AT (1) ATE45640T1 (fr)
DE (2) DE3380424D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9005234D0 (en) * 1990-03-08 1990-05-02 Haldo Developments Ltd Illumination of a surface

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524051A (en) * 1968-08-19 1970-08-11 Gen Electric Luminaire
US4037341A (en) * 1973-08-13 1977-07-26 Johns-Manville Corporation Luminaire for lighting a sign and method
IT1063317B (it) * 1976-05-19 1985-02-11 Eigenmann Ludwig Perfezionamento agli elementi retroriflettenti di tipo lenticolare in particolare per segnaletica stradale e relativi elementi perfezionati
US4262326A (en) * 1979-03-16 1981-04-14 K-S-H, Inc. Lens for high intensity lamp fixtures

Also Published As

Publication number Publication date
EP0118574A1 (fr) 1984-09-19
DE118574T1 (de) 1985-02-14
ATE45640T1 (de) 1989-09-15
DE3380424D1 (en) 1989-09-21

Similar Documents

Publication Publication Date Title
US4451875A (en) Poster panel lighting fixture
US5542201A (en) Indirectly illuminated sign
US5016143A (en) Illuminating system
US4729075A (en) Constant zone reflector for luminaires and method
KR100811061B1 (ko) 고휘도 엘이디를 이용한 조명기구
CA2439226C (fr) Dispositif d'affichage de donnees
US5219217A (en) Illuminating system
US4242727A (en) Luminaire reflector
KR0150455B1 (ko) 외부조명식 간판에 대한 광조명장치
US5997156A (en) Lighting device for generating a rectangular pattern at the work area, E. G. for illuminating pedestrian crossings
US4954935A (en) Lighting system for illuminating billboards and the like
US4698734A (en) Lensed indirect luminaire with side angle brightness control
US3009054A (en) Prismatic lighting fixture
JP2001307508A (ja) 改良型戸外パネル照明器具
CA2526865C (fr) Reflecteur a quatre segments
US5483424A (en) Lighting apparatus
JPH03504290A (ja) 照明システム
JP2720108B2 (ja) 内部照明標示具
EP0118574B1 (fr) Bloc d'éclairage pour panneau d'affichage
US5727870A (en) Indirect asymmetric luminaire assembly
US5570525A (en) Flexible face sign with uniform luminosity
US4042817A (en) Quasi-indirect monosymmetrical lighting system
DE69012812D1 (de) Verbesserungen an befestigungen für beleuchtungsröhren.
CA1195306A (fr) Appareil d'eclairage pour panneau publicitaire
US2970208A (en) Luminaire optical system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19840412

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

ITCL It: translation for ep claims filed

Representative=s name: BARZANO'E ZANARDO S.P.A.

TCNL Nl: translation of patent claims filed
DET De: translation of patent claims
EL Fr: translation of claims filed
TCAT At: translation of patent claims filed
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MANVILLE CORPORATION

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 45640

Country of ref document: AT

Date of ref document: 19890915

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: BARZANO'E ZANARDO S.P.A.

REF Corresponds to:

Ref document number: 3380424

Country of ref document: DE

Date of ref document: 19890921

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19930215

Year of fee payment: 11

Ref country code: FR

Payment date: 19930215

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19930216

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19930217

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930225

Year of fee payment: 11

Ref country code: BE

Payment date: 19930225

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930226

Year of fee payment: 11

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19930331

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19930504

Year of fee payment: 11

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940310

Ref country code: GB

Effective date: 19940310

Ref country code: AT

Effective date: 19940310

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940311

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940331

Ref country code: CH

Effective date: 19940331

Ref country code: BE

Effective date: 19940331

BERE Be: lapsed

Owner name: MANVILLE CORP.

Effective date: 19940331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19941001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940310

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19941130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19941201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 83102336.1

Effective date: 19941010