SE522643C2

SE522643C2 - Lantern for vehicles

Info

Publication number: SE522643C2
Application number: SE0102148A
Authority: SE
Inventors: Karsten Dieckmann
Original assignee: Hella Kg Hueck & Co
Priority date: 2000-07-08
Filing date: 2001-06-18
Publication date: 2004-02-24
Also published as: DE10033385A1; GB2364564A; FR2811407A1; GB2364564B; SE0102148L; ITTO20010112U1; SE0102148D0; DE10033385B4; FR2811407B1; GB0116261D0

Abstract

A lamp 10 for vehicles which comprises a reflector which accommodates the light source and has a plurality of reflector portions which concentrate the light incident upon them, the focal points of the reflective surfaces being congruent, and some of the reflective portions being graduated in the manner of Fresnel optics 16 and being connected on either side of the reflective surface accommodating the light source 14 and merging into further outer reflective portions 18 which are tilted inwards. The central portion of a lens plate (30, fig 5) may be configured with vertically extending light converging cylindrical lenses (32, fig 5).

Description

20 25 30 35 40 522 645 2 Den del av lyktglaset som är belägen framför reﬂektorsegmentet i vilket ljuskällan är anordnad är företrädesvis utförd med vertikalt gående ljussamlande cylinderlinser, som sprider de mot dessa infallande ljusstrålarna väsentligen horisontellt. The part of the lens which is located in front of the reactor segment in which the light source is arranged is preferably formed with vertically moving light-collecting cylindrical lenses, which scatter the light rays incident on these incident beams substantially horizontally.

Funktionen att rikta ljusstrålarna åstadkommes i de övriga reﬂektorområdena av den Fresnel-linsartat stegformiga utformningen, vilket har fördelen att lyktglaset kan vara utfört utan optiska element framför dessa områden.The function of directing the light beams is achieved in the other reactor areas of the Fresnel lens-like stepped design, which has the advantage that the lens can be made without optical elements in front of these areas.

Det stegformiga och lutade anordningssättet för de yttre reflektorpartierna ger också fördelen att lyktan kan drivas med en ljuskälla som har låg effekti förhållande till utstrål- ningsytan utan att de i lag föreskrivna värdena för ljusstyrkan underskrids.The stepped and inclined arrangement of the outer reflector portions also provides the advantage that the lamp can be operated with a light source which has a low efficiency in relation to the radiation surface without the statutory values for the brightness being exceeded.

Uppﬁnningen kommer nu att förklaras närmare med ledning av ett på ritningen visat utföringsexempel. Därvid visar fig 1 en vy framifrån av en lykta av inledningsvis angivet slag, fig 2 ett snitt utmed linjen A-A i fig 1, fig 3 ett snitt utmed linjen B-B i fig 1, fig 4 lyktglaset i en lykta av inledningsvis angivet slag, fig 5 ett snitt utmed linjen C-C i ﬁg 4 och fig 6 ett snitt utmed linjen D-D i ﬁg 4.The invention will now be explained in more detail with reference to an exemplary embodiment shown in the drawing. Fig. 1 shows a front view of a lamp of the type initially indicated, Fig. 2 a section along the line AA in Fig. 1, Fig. 3 a section along the line BB in Fig. 1, Fig. 4 the lens of a lamp of a lamp of the type initially indicated, Fig. 5 a section along the line CC in Fig. 4 and Fig. 6 a section along the line DD in Fig. 4.

Lyktan 10, som är ett varselljus, har en av plast bestående reﬂektor, som bildas av fem reﬂektorsegment 14, 16, l6', 18, 18' och samtidigt fungerar som lykthus 12. Det mittre reflektorsegmentet 14 har en öppning 24 i vilken ljuskällan är belägen. En del av det av ljuskällan utsända ljuset reflekteras i lyktans strålriktning av det mittre reﬂektorsegmen- tet 14, som är försett med horisontella, i tvärsektion konvexa band 20. Emedan det mittre reflektorsegmentet 14 omger ljuskällans brännpunkt 28 med en rymdvinkel som är större än 180° får det av det mittre reﬂektorsegmentet 14 reflekterade ljuset hög ljustäthet. Den del av lyktglaset 30 som är belägen framför det mittre reﬂektorsegmentet 14 är utförd med vertikala cylinderlinser 32 och i lyktglasets 30 ytterområde 36 med prismor 34. De båda utanför det mittre reﬂektorsegmentet 14 i den långsträckta lyktan anordnade reﬂektorseg- menten 16, 16' är Fresnel-linsartat stegformiga 22. Utanför reﬂektorsegmenten 16, 16' följer yttre reﬂektorsegment 18, 18'. Dessa är lutade mer inåt relativt segmenten 16, 16' för att öka de mot segmenten 18, 18' infallande ljusstrålarnas rymdvinkel och därigenom höja ljustätheten för det av de yttre reﬂektorsegmenten 18, 18' reflekterade ljusknippet.The lamp 10, which is a warning light, has a plastic reflector, which is formed by five reflector segments 14, 16, 16 ', 18, 18' and at the same time functions as a lamp housing 12. The middle reflector segment 14 has an opening 24 in which the light source is located. A portion of the light emitted from the light source is reflected in the beam direction of the lamp by the central reflector segment 14, which is provided with horizontal, cross-section convex bands 20. While the central reflector segment 14 surrounds the light source focal point 28 with a space angle greater than 180 ° the light reflected by the middle reflector segment 14 has a high light density. The part of the lens 30 located in front of the middle reflector segment 14 is formed with vertical cylinder lenses 32 and in the outer region 36 of the lens 30 with prisms 34. The two reflector segments 16, 16 'arranged outside the center reflector segment 14 in the elongate lamp are lens-like stepped 22. Outside the rejector segments 16, 16 ', outer rejector segments 18, 18' follow. These are inclined more inwards relative to the segments 16, 16 'in order to increase the spatial angle of the light rays incident on the segments 18, 18' and thereby increase the light density of the light beam reflected by the outer reactor segments 18, 18 '.

De yttre reﬂektorsegmenten 18, 18' är endast delvis Fresnel-linsartat stegformiga 22.The outer reactor segments 18, 18 'are only partially Fresnel lens-like stepped 22.

Genom att ljusstrålarna reﬂekteras fokuserat av de utanforliggande reﬂektorsegmenten 16, 16' och de yttre reflektorsegmenten 18, 18' är lyktglaset 30 utfört utan optiska element i området 38 framför dessa segment. Lyktglaset 30 placeras med sin ytterkant 36 i lykthu- sets 12 husram 26, och täcker därigenom över reﬂektorsegmenten 14, 16, 16', 18, 18'.By refracting the light beams focused by the external reflector segments 16, 16 'and the outer reflector segments 18, 18', the lens 30 is made without optical elements in the area 38 in front of these segments. The lens 30 is placed with its outer edge 36 in the housing frame 26 of the lamp housing 12, thereby covering the reflector segments 14, 16, 16 ', 18, 18'.

Sammanställning av hänvisningsbeteckningarna 10 Lykta 12 Lykthus 14 Mittre reﬂektorsegment 16, 16' Utanför belägna reﬂektorsegment 18, 18' Yttre reﬂektorsegment 20 Reﬂektorband 22 24 26 28 30 32 34 36 38 LTI “ J P0 G\ .åß CN Fresnel-linsartade steg Öppning för ljuskälla Husram för lyktglas Ljuskällans brännpunkt Lyktglas Cylínderlinser Prismor Ytterkant på lyktglaset Område utan optiska element : u s o ao uCompilation of the reference numerals 10 Lantern 12 Lantern housing 14 Middle rejector segments 16, 16 'Outside rejector segments 18, 18' Outer rejector segments 20 Reector bands 22 24 26 28 30 32 34 36 38 LTI “J P0 G \ .åß CN Fresnel Ö lenses Housing frame for lens Glass Focus of the light source Lens Cylinder lenses Prisms Outer edge of the lens Area without optical elements: uso ao u

Claims

10 15 20 n ø u - u »u Patent claim

Lantern for vehicles, with a reflector (14, 16, 18) in which a light source is arranged, the reflector consisting of your reflector segments (14, 16, 16 ', 18, 18'), which focus the incident light on them. , and the focal points of all reflection surfaces at least approximately coincide and wherein at least a part of the outer reflection surfaces (16) are Fresnel lens-like stepped, characterized in that Fresnel lens-like stepped (22) portions (16) on both sides connect to the reflection segment (14). in which the light source is arranged and that the step-shaped portions (16) merge into further reactor segments (18), which relative to the step-shaped portions (16) are inclined more inwards.

Lamp according to Claim 1, characterized in that the more inwardly inclined reactor sections (18) are at least partially fresnel-like stepped.

Lamp according to Claim 1 or 2, characterized in that the reactor segment (14) in which the light source is arranged is divided into horizontal bands which are concave or convexly curved in cross section.

Lamp according to one of the preceding claims, characterized in that the part of the lens (30) located in front of the reactor segment (14) in which the light source is arranged is made with vertically moving light-collecting cylinder lenses (32).

Lamp according to Claim 4, characterized in that the lens (30) is made without optical elements in front of the other segments (16, 16 ', 18, 18') of the reflector.