DE202021100121U1 - Reflector for a lamp - Google Patents

Abstract

Reflector (10) for a lamp,
- With a reflector base body (11) which spans a reflector space (13), wherein the reflector base body (11) has an origin (16) which forms an opening (17) for receiving a light source (M),
- With a shutter (20), which is located in the reflector space (13) and is connected downstream of the origin (16) in the light exit direction (R) and has a shutter plate (21) which has a reflective, planar, pointed conical shutter plate surface (16) directed towards the origin (16). 25) trains,
- A collar (22) having a collar opening (O) being connected to the shut-off plate (21), characterized in that
- the collar opening (O) is formed starting from the shielding plate (21) in the direction of the side facing away from the origin (16),
- The collar (22) widens in a funnel shape with increasing distance from the origin (16).

Description

The invention relates to a reflector for a lamp with a reflector base body which spans a reflector space, the reflector base body having an origin which forms an opening for receiving a light source, with a shadowing plate located in the reflector space downstream of the origin in the light exit direction which forms a reflective, planar, tapered conical shielding plate surface directed towards the origin, a collar having a collar opening being connected to the shielding plate.

Generic reflectors for lights are for example from the EP 2 375 128 B1 well-known and are used, among other things, in LED downlights. The light from the LED, which radiates directly from the light source into the viewer's retina, overtaxes the eye's ability to adapt with its light intensity. Due to the glare, the viewer's vision is severely limited for a short time and can also be painful to the eye. Such reflectors are now used to prevent glare of a person by the direct light of a lighting means, such as an LED, by means of the shader, but at the same time to ensure uniform light emission.

In order to prevent glare from the direct light, the shader sits firmly in the reflector space of the reflector and is arranged downstream of the illuminant in the light exit direction. The light rays are guided in the direction of the shader, caught there and then reflected back to the light source, so that the glare behavior of the emitted light is reduced. Only the indirect light, which is not produced directly in the retina of the viewer but only through reflection, leaves the reflector in the direction of the light exit opening of the reflector.

The disadvantage of the prior art is that the glare behavior is reduced by the seated shader, but the efficiency of the LED or the emitted light is greatly reduced by the use of the shader. The shader sits like a light trap next to the lamp in the direction of the light exit. The light rays are thus emitted directly into the shader, are caught there and then reflected back to the light source. Overall, less light is released from the reflector into the room to be illuminated. The energy loss of the light beam is thus increased and, as a result, the efficiency of the LED is reduced.

The object of the invention is therefore to create a reflector for a luminaire whose lamp efficiency is guaranteed despite the reduction in glare of the light.

The object is achieved by a reflector for a lamp with the features of claim 1, according to which the collar opening is formed starting from the shading plate in the direction of the side facing away from the origin, the collar widens in a funnel shape with increasing distance from the origin.

In contrast to the prior art, the collar opening is not oriented in the direction of the illuminant, but shaped in the light exit direction, so that the direct light emitted by the illuminant is guided along the reflective collar, which widens in a funnel shape with distance from the origin, in the light exit direction from the reflector becomes. The illuminant is completely covered by the shading plate, so that the illuminant cannot be seen when looking into the reflector and the viewer is not blinded by the direct light, but the emitted light is not caught by the shader as a light trap, as in the prior art, but reflected in the reflector space. The efficiency of the light source is therefore not reduced, despite the shadow being seated, since the light is reflected into the reflector base body.

Overall, the illuminant is thus completely covered by the shading device or the shading plate, so that the direct light emitted does not dazzle the viewer, but at the same time all of the light emitted by the illuminant is released from the light exit opening of the reflector. The lamp efficiency is not reduced by the shadow in the reflector.

It is also provided that the funnel-shaped extension of the collar has a continuous course. This ensures a homogeneous emission behavior of the light rays from the illuminant.

It is also possible that the funnel-shaped extension of the collar has a step-like course.

It is particularly advantageous that the reflector and shader are each designed as individual components and can be detachably arranged on one another. The reflector and shadow form a modular system. It is possible to simply arrange reflectors and shaders of different sizes next to one another or to exchange them non-destructively.

For this purpose, it is provided that the shielding plate forms at least one fastening leg, which arranges the shadow on the reflector base body of the reflector. It is also possible for the shielding plate to have several fastening legs.

It is particularly advantageous that the at least one fastening leg is arranged on the shading plate surface of the shading plate facing the origin. The at least one fastening leg is provided with a light-reflecting surface, so that the fastening leg also ensures a reflection of incident light rays.

It is provided that the at least one fastening leg has a latching receptacle at an end remote from the reflector surface, which interacts with the reflector base body in order to releasably arrange the shading and the reflector on one another. For this purpose, the reflector base body can be inserted close to the origin into the latching receptacle of the fastening leg in order to fasten the shadow to the reflector base body and thus to the reflector.

It is also contemplated that when the shader is in the arranged state on the reflector base body, an annular light exit gap is present between the shader and the reflector base body.

Ultimately, it is provided that an outer collar surface of the shader serves to direct the light of the emitted light from the illuminant. It is possible, depending on the design of the collar, its funnel-shaped extension and the associated shape of the collar outer surface, to reflect the emitted light in a targeted manner in the reflector.

Further advantages of the invention and a better understanding of the same follow from the following description of an exemplary embodiment.

• 1 perspektivische Ansicht eines an einem Kühler angeordneten, erfindungsgemäßen Reflektors mit einsitzendem Abschatter,
• 2 Schnittdarstellung des Reflektors mit Abschatter und Kühler gemäß Schnittlinien II - II in 1,
• 3 Teilexplosionsdarstellung des Reflektors mit Abschatter und Kühler gemäß 2,
• 4 Seitenansicht des Abschatters,
• 5 Draufsicht auf den Abschatter gemäß Pfeil V in 4,
• 6 Unteransicht des Abschatters gemäß Pfeil VI in 4.

Show it:

• 1 perspective view of a reflector according to the invention, arranged on a cooler, with a seated shadow,
• 2 Sectional view of the reflector with shader and cooler according to section lines II - II in 1 ,
• 3 Partial exploded view of the reflector with shader and cooler according to 2 ,
• 4th Side view of the shader,
• 5 Top view of the shader according to arrow V in 4th ,
• 6th Bottom view of the shader according to arrow VI in 4th .

In the 1 to 3 is a reflector according to the invention as a whole with the reference number 10 Mistake.

In the 1 is the reflector 10 shown. The reflector 10 has a reflector base 11 on which an outer surface 12th trains. The reflector body 11 spans a reflector room 13th on, which has a reflector inner surface 14th having. This inner reflector surface 14th is in a variety of reflector sections 15th divided. The reflector body 11 forms a light exit opening T and opposite the light exit opening T an origin 16 out.

In the reflector room 13th is the origin 16 in the direction of light emission R. a shadow 20th downstream. The shader 20th forms a shut-off plate 21 from which in the light exit direction R. an interior surface I. having.

At the shut-off plate 21 is in the direction of light emission R. a collar 22nd tied, which has a crane inner surface K and towards the inner surface of the reflector 14th showing an outer collar surface L. having. The collar 22nd forms starting from the shielding plate 21 in the direction of light emission R. a collar opening O out.

Between the inner reflector surface 14th of the reflector body 11 and the outer surface of the collar L. of the collar 22nd is an annular light exit slit A. educated.

The reflector 10 is by means of a lamp holder 18th on a cooler 23 arranged, which has a large number of individual cooling fins 24 having.

In 2 is the one on the cooler 23 arranged reflector 10 with the incarcerated shadow 20th shown in sectional view.

The origin 16 of the reflector 10 forms an opening 17th from, which is used to accommodate a lamp M. The opening 17th is supported by a bottom ring B. surround.

The shader 20th with its shielding plate 21 is in the reflector room 13th arranged. The shut-off plate 21 forms to the origin 16 directed a reflective, flat, pointed cone-shaped shielding plate surface 25th out. This reflective shielding plate surface 25th forms fastening legs 26th which in turn have a light-reflecting surface. The mounting legs 26th have their fastening leg origin U at the shielding plate surface 25th .

Opposite the origin of the fastening leg U , towards the origin 16 pointing, forming the mounting legs 26th each one end remote from the reflector surface 27 out. At the end remote from the reflector surface 27 of the fastening leg 26th has each mounting leg 26th a rest shots 28 on.

These snap shots 28 reach behind the bottom ring B. of the reflector body 11 and thus order the shadow 20th on the reflector body 11 at. Between the arranged shutters 20th and the reflector body 11 the light exit gap remains in the arranged state A. .

Below the origin 16 is the lamp holder 18th shown. This lamp holder 18th forms a recording 19th in which the light source M, here an LED in the form of a “circuit on board light emitting surface (CoB-LES)”, is located. The lamp holder 18th is attached to the cooler by means of screws (not shown) 23 arranged.

The cooler 23 forms a cooler body 29 from which fully the respective cooling fins 24 are arranged.

The cooler body 29 has a cooler base body top 30th and a radiator base 31 on. On the top of the heat sink 30th is the lamp holder 18th arranged with lamp M. The lower side of the cooler body is in the cooler body 29 a thread 32 shown, by means of which the cooler 23 can be arranged in a lamp housing, not shown.

The 3 shows a partially exploded view of the reflector 10 with shadow 20th and cooler 23 according to 2 .

In the 4th is the shadow 20th shown in side view. The shut-off plate 21 has the reflective, flat and pointed cone-shaped shielding plate surface 25th on.

The collar 22nd the shadowers 20th expands with increasing distance from the origin 16 (not shown) and in the light exit direction R. funnel-shaped.

The mounting legs 26th are on the reflective shielding plate surface 25th arranged and point at the end remote from the reflector surface 27 each the snap-in shots 28 on.

In the 5 is the top view of the shadow 20th according to direction arrow V in 4th shown. The shader 20th forms the shut-off plate 21 with the inner surface I. out. At the shut-off plate 21 is the collar 22nd arranged, which the collar inner surface K and the outer surface of the collar L. having.

The 6th shows the bottom view of the shader 20th according to direction arrow VI in 4th . At the shielding plate surface 25th the shut-off plate 21 are the three mounting legs 26th with the end remote from the reflector surface 27 trained locking recordings 28 arranged.

In the following, the functionality of the reflector is explained using the 1 and 2 described.

In the reflector room 13th of the reflector 10 is the shadow 20th arranged. Between the inner reflector surface 14th of the reflector room 13th and the outer surface of the collar L. of the collar 22nd , which on the shut-off plate 21 the shadowers 20th is connected, is the annular light exit gap A. educated.

The lamp M sits in the receptacle 19th the lamp holder 18th and is thus below the opening 17th of the reflector body 11 arranged. As in 1 The distance to the origin can be clearly seen 16 funnel-shaped widening collar 22nd the shadowers 20th designed in such a way that the lighting means M completely from the shading 20th is covered.

Since the shadow 20th completely covers the illuminant M, the emitting, direct light cannot penetrate the retina of the viewer and thus cannot dazzle him.

Most of the light emitted is directed against the reflective shielding plate surface 25th the shut-off plate 21 reflected so that the light does not go directly into the reflector room 13th but first from the shielding plate surface 25th is reflected. The reflected light then passes through the ring-shaped light exit slit A. and is along the outer surface of the collar L. of the collar 22nd towards the inner reflector surface 14th reflected.

Overall, the glare behavior is reduced because the shadow 20th is arranged above the illuminant M and the direct light does not radiate into the field of vision of the viewer. At the same time, however, the light on the shielding plate surface 25th the shut-off plate 21 reflected and then as indirect light along the outer surface of the collar L. to the inner reflector surface 14th in the reflector room 13th reflected so that the efficiency of the light source M, here the LED in the form of a CoB-LES, is not reduced.

The cooler 23 serves to dissipate the heat of the lamp M during operation.

List of reference symbols

10

reflector

11

Reflector body

12th

Exterior surface

13th

Reflector room

14th

Inner reflector surface

15th

Reflector sections

16

origin

17th

opening

18th

Lamp holder

19th

admission

20th

Shadowing

21

Shielding plate

22nd

collar

23

cooler

24

Cooling fins

25th

Shielding plate surface

26th

Mounting leg

27

end of 26 remote from the reflector surface

28

Snap shot from 26

29

Radiator body

30th

Radiator body top

31

Radiator base body underside

32

thread

A.

annular light exit slit

B.

Bottom ring

D.

Diameter of 22

I.

Inner surface of 21

K

Inner collar area

L.

Collar outer surface

O

Collar opening

R.

Direction of light emission

T

Light exit opening

U

Mounting leg origin

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2375128 B1 [0002]

Claims (9)

Reflector (10) for a lamp, - with a reflector base body (11) which spans a reflector space (13), the reflector base body (11) having an origin (16) which has an opening (17) for receiving a light source (M ) - with a shader (20), located downstream of the origin (16) in the light exit direction (R) and seated in the reflector space (13), which has a shading plate (21) which has a reflective, planar, Forming a pointed cone-shaped shut-off plate surface (25), - a collar (22) having a collar opening (O) being connected to the shut-off plate (21), characterized in that - the collar opening (O) starting from the shut-off plate (21) in the direction the side facing away from the origin (16), the collar (22) widens in a funnel shape with increasing distance from the origin (16). Reflector (10) Claim 1 , characterized in that the funnel-shaped extension of the collar (22) has a continuous course. Reflector (10) Claim 1 , characterized in that the funnel-shaped extension of the collar (22) has a step-like course. Reflector (10) according to one of the Claims 1 to 3 , characterized in that the reflector (10) and the shader (20) are each designed as individual components and can be detachably arranged on one another. Reflector (10) according to one of the preceding claims, characterized in that the shading plate (21) is formed at least one fastening leg (26) which arranges the shading (20) on the reflector base body (11) of the reflector (10). Reflector (10) Claim 1 and Claim 5 , characterized in that the at least one fastening leg (26) is arranged on the shut-off plate surface (25) of the shut-off plate (21) facing towards the origin (16). Reflector (10) according to the Claims 1 , 5 and 6th , characterized in that the at least one fastening leg (26) has a latching receptacle (28) at an end (27) remote from the reflector surface, which interacts with the reflector base body (11) in order to releasably arrange the shading (20) and the reflector (10) next to one another . Reflector (10) according to one of the preceding claims, characterized in that when the shader (20) is arranged on the reflector base body (11) there is a light exit gap (A) between the shader (20) and the reflector base body (11). Reflector (10) according to one of the preceding claims, characterized in that an outer collar surface (L) of the collar (22) of the shader (20) is used to guide the light emitted by a luminous means (M).

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