EP1848919A1

EP1848919A1 - Recessed light

Info

Publication number: EP1848919A1
Application number: EP06706362A
Authority: EP
Inventors: Hartmut S. Engel
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-02-02
Filing date: 2006-01-23
Publication date: 2007-10-31
Anticipated expiration: 2026-01-23
Also published as: DE502006009100D1; CN100547287C; AU2006210007A1; WO2006081961A1; US7780308B2; EP1848919B1; ATE502251T1; CN101124431A; DE102005004868A1; AU2006210007B2; US20080130291A1

Abstract

An installed lamp has a housing (2) and a retainer for fixing in a installation surface, especially in a room ceiling. On the side of the lighting device zone turned away from the direct-light exit zone (12) is provided a head-reflector (18) separated from the direct light reflector (8) and which is shaped so that it deflects a large part of the light from the lighting device zone (20) into the interior of the direct light reflector (8).

Description

recessed light

The invention relates to a recessed light with a housing and a holder for mounting in a mounting surface, in particular a ceiling, a bulb holder for holding a bulb in a light source and a direct light reflector with a located in the illumination direction, a direct light exit region defining direct light reflector opening, at least partially from is surrounded by a diffused light exit region, wherein the direct light reflector has a rear opening.

Built-in lights are known from the prior art in many forms. Among other things, "dark-light lights" are known in which the lamp and reflector are arranged to each other so that the bulb is seen from a certain angle neither directly nor specularly on the reflector and thus can develop no glare. However, this avoidance of a glare effect also means that the ceiling area of a room illuminated in this way remains largely unlighted and the relationship between light source and illuminated area perceived by humans as being natural is lost, since it is not possible to know from which light source the light originates.

A recessed luminaire of the aforementioned type, which also has a diffuse light exit region in addition to a direct light exit region and which is described, for example, in German patent application DE 103 60 947.4, avoids the disadvantages mentioned above. The creation of a lighting-warm room climate, since in the direct light exit region according to the "dark-light principle" can be worked, at the same time provides the non-glare diffuse light exit area for the delivery of scattered light, which can be selected in the luminance so that no glare occurs. By the

Diffuse light exit region is thus always guaranteed a visible marking of the light source, which leads in spite of the use of the dark light principle in the direct light exit area to a pleasant perceived room atmosphere with good light atmosphere.

Recessed lights, as described in DE 103 60 947.4, are usually operated with compact fluorescent lamps, with the result that here for special applications that require a particularly intense lighting, no sufficient luminance can be achieved.

Accordingly, it is an object of the present invention to develop a recessed luminaire according to DE 103 60 947.4 in such a way that an increased luminance can be achieved, in particular when using punctiform luminous means, which are e.g. can be designed as halogen high-pressure lamps.

This object is achieved by the features of claim 1 and in particular by the fact that on the side facing away from the direct light exit region of the illuminant area is provided by a direct light reflector head reflector, which is shaped such that it at least a majority of the votes from the illuminant area and directs him incident light into the interior of the direct light reflector. According to the invention, while maintaining all the advantages of a recessed luminaire according to DE 103 60 947.4, it is achieved here that a large part of the light emitted by a luminous means is directed on the one hand directly and on the other hand via the additional head reflector into the interior of the direct light reflector, so that it finally fails the direct light exit area of the recessed luminaire can emerge as direct light. The reaching into the interior of the direct light reflector amount of light is thus significantly increased by the head reflector over a recessed luminaire according to DE 103 60 947.4, which means that the luminance on the directly illuminated surfaces is significantly increased. Thus, there is a more intense lighting with more pronounced contrasts and stronger shadows, these effects are achieved primarily by the inventively provided additional head reflector.

According to the invention it is further advantageous that the head reflector ensures that a large part of the light incident on it directly, i. E. Without further reflection on the inner surfaces of the direct light reflector, can reach the direct light exit region, so that the surfaces to be illuminated are ultimately illuminated to a substantial extent directly over the head reflector. As a result, the reflecting inner surfaces of the direct-light reflector are less bright, which additionally reduces the glare effect attributable to the inner surfaces of the direct-light reflector.

In skillful and subsequently concretely explained arrangement of the head reflector can be achieved at the same time that still reaches a sufficiently large amount of light to the diffuse light exit region, so that it can signalieren sig nificant the position of the recessed light. Overall, according to the invention results in an unusually good, uniform light distribution over the entire over the direct light exit area to be illuminated area while still pleasant room atmosphere and good lighting atmosphere. This is achieved by the intensive illumination over the direct light exit area and the delivery of an additional amount of scattered light via the diffuse light exit area.

The advantages according to the invention can be realized particularly well when the head reflector has a concave shape which opens towards the illuminant region. Specifically, the head reflector can be formed for example as a parabolic reflector.

With regard to the positioning of the illuminant area, direct light reflector and head reflector, various possibilities exist according to the invention. However, it is preferred if the illuminant area is arranged on the side of the rear opening of the direct light reflector facing away from the direct light exit area, so that the illuminant area ultimately comes to rest between the rear opening of the direct light reflector and the head reflector. In this case, comes from the

Light source emitted light to the head reflector and is directed from there via the rear opening of the direct light reflector in the interior.

The head reflector is inventively designed to be as small as possible. Specifically, it is possible to make the extension of the head reflector smaller in a direction parallel to the plane of the direct light exit region than the diameter of the rear opening of the direct light reflector. At the same time, the head reflector should at least overlap, which is why it is advantageous if the extension of the head reflector in a direction parallel to the direct light exit region extending direction is greater than the longitudinal extent of the bulb area or the bulb in a direction also parallel to the plane of the direct light exit region extending direction.

It is preferred if the illuminant area is arranged at least substantially within the head reflector, since in this way it is achieved that the light emitted by the illuminant strikes a very large proportion directly on the head reflector and can pass from there into the interior of the direct light reflector.

It is advantageous if the direct light exit region and the diffuse light exit region are acted upon by a common light source, since in this way no separate light source has to be provided for the diffuse light exit region.

In a housing region surrounding the direct light reflector and / or the head reflector, an additional reflector may be provided, which is formed in particular by the inner surfaces of the housing. About this additional reflector is then applied primarily the diffuse light exit region, but to a lesser extent, the direct light exit region can be acted upon via the additional reflector. In such an arrangement, the illuminant radiates to a direct light directly via the direct light reflector and indirectly via the head reflector in the actual illumination direction and on the other hand also to the additional reflector, which at least partially directs the incident light on him to the diffuse light exit region. The additional reflector can reflect either specularly or diffusely, the former In the case of the diffuse light exit region, a conversion of directly reflected light into the scattered light should take place.

The illuminant mount provided according to the invention can be designed, in particular, for holding a halogen lamp, a high-pressure halogen lamp or another punctiform light source, since a particularly high illuminance or a particularly high luminous flux can be achieved with such a luminous means.

It is particularly advantageous if a diffusing screen is arranged on the side of the illuminant area facing away from the head reflector. This diffuser preferably extends parallel to the plane of the direct light exit region. In particular, it can be arranged between the illuminant area and the rear opening of the direct light reflector.

The extension of the lens in a direction parallel to the plane of the direct light exit region is advantageously approximately the same size as the corresponding extent of the head reflector.

The diffusing screen is preferably arranged at a distance from both the head reflector and the rear opening of the direct-light reflector, these distances being between 0.5 cm and 3 cm. This ensures that a comparatively small, but sufficiently large amount of light does not reach the interior of the direct light reflector, but rather can be directed to the diffuser light exit area.

The lens provided according to the invention causes the light reflected by the head reflector in the direction of the interior of the direct light reflector to pass through the lens. Still must also that light pass through the lens through which passes directly from the lamp and without reflection on the head reflector in the interior of the direct light reflector. As a result, the light passing through the diffusing screen is distributed particularly uniformly over the direct light exit region, thus ultimately ensuring a uniform illumination of the surfaces to be acted upon by reducing the luminance of the illuminant. At the same time, due to its light-conducting and / or reflecting properties, the diffusing screen can ensure that light also reaches the additional reflector already mentioned above, which is then ultimately responsible for acting on the diffuse light exit region.

It is particularly preferred if the lens is formed as a UV filter. Since ultimately the entire light emerging from the direct light exit region must first pass through the lens, the lens already ensures sufficient UV filtering, so that it is no longer necessary to form a cover plate provided in the direct light exit region as a UV filter , The diffuser is usually smaller in size than a cover in the direct light exit area. The total area of the UV filter to be provided in the recessed luminaire according to the invention can therefore be significantly reduced by a diffuser designed as a UV filter, so that an economic advantage is achieved as a result. Alternatively or additionally, the diffusing screen can also be formed as a color filter, so that colored light emerges from the direct light exit area-in contrast to the diffuse light exit area.

The bulb socket of a recessed luminaire according to the invention can in particular be mounted pivotably together with a lens holder. In this case, the bulb socket can be shared with the lamp and optionally the lens together with the lens holder, for example, pivot from a substantially horizontal position into a position in which the light source is particularly well accessible for the purpose of Auswechseins. The maximum pivoting angle in such a pivoting movement may be, for example, between 45 ° and 90 °, in particular between 50 ° and 70 °. With a swivel angle of about 60 °, the light source can be replaced very easily.

The lamp holder and in particular the lens holder can be biased by means of a spring element in its operating position. In the operating position bulbs and diffuser generally extend horizontally. When replacing the illuminant or the lens, then only the already described pivoting movement must be carried out against the comparatively low force of the spring element, whereupon a change of the illuminant is easily possible in this pivoted position. After the lamp has been replaced, the bulb holder and possibly the lens holder are automatically swiveled back to its correct operating position by the spring element, so that incorrect operation is practically ruled out.

Bulb socket and lens holder can be provided in a common holding element. In this case, the common pivotal movement of the bulb holder and lens holder can be accomplished particularly simply by the fact that said holding element is designed to be pivotable. In this case, bulb holder and lens holder can be rigidly arranged in the holding element. A particularly good accessibility of the particular pivotable light source is obtained when the direct light reflector is pivotally held in the housing. In this case, the direct-light reflector can first be pivoted away so that the illuminant and, if appropriate, the diffuser are easily accessible for further pivoting movement.

The diffuse light exit region according to the invention - as already mentioned - is not acted upon by the head reflector, but exclusively indirectly via the additional reflector and optionally via the lens. A particularly good illumination of the diffuse light exit region results when the direct light reflector is designed to be reflective or diffusely reflective on its outer side, since in this case light can reach the diffuse light exit region particularly well via the additional reflector and the outside of the direct light reflector.

The housing of the recessed luminaire according to the invention can be terminated in the region of the diffuse light exit region and preferably also in the region of the direct light exit region by a transparent cover pane, in particular at least substantially dust-tight. It is not necessary to perform this disc as a UV filter when the lens already acts as a UV filter.

The cover plate can also be provided only in the region of the diffuse light exit region, so that the direct light exit region is open in the illumination direction. In this case, it is preferable if the cover plate has the light scattering properties desired in the diffused light exit region and is accordingly made of a suitable material which is not completely transparent. Further preferred embodiments of the invention are specified in the subclaims.

The invention will be explained below with reference to an embodiment with reference to the drawings; in these show:

1 is a diagonal section through a perspective view of a recessed luminaire according to the invention, in which all the elements of the recessed luminaire are in their respective operating position,

Fig. 2 is a diagonal section through a perspective view of a recessed light according to FIG. 1, in which direct light reflector, illuminant and diffuser are in a pivoted relative to FIG. 1 position in which a light source change is possible, with direct light reflector and diffuse light exit region in this illustration in contrast to FIG. 1 are not shown in section,

FIG. 3 shows the unit comprising the head reflector, the illuminant and the diffuser in their respective operating position (sectional side view), which is used in a luminaire according to FIGS. 1 and 2, FIG.

4 shows a representation corresponding to FIG. 3, in which the illuminant and lens are in a pivoted position, in which it is possible to change the illuminant, 5 is an exploded view of the unit shown in FIGS. 3 and 4 from a first perspective, and

6 shows an exploded view of the unit shown in FIGS. 3 and 4 from a second perspective.

The recessed luminaire according to the invention according to FIGS. 1 to 6 has a housing 2 which is open on one side and which is at least substantially dust-tight in the region of its open side in the direction of illumination with a square cover plate 4. The cover 4 is fixed in a pivotally mounted on the housing frame 6.

A substantially dome-shaped direct light reflector 8 with a rearward opening 10 is connected to the cover 4 in a suitable manner. The region of the cover 4, which closes the direct light reflector 8 in the illumination direction, forms a circular direct light exit region 12, which is surrounded by a diffuse light exit region 14. The diffuse light exit region 14 is bounded on the inside by a circular line corresponding to the direct light reflector 8 and on the outside by a square line corresponding to the frame 6. In particular, a diffuser disk 16 can extend in the diffuse light exit region 14 parallel to the cover disk 4, which ensures that the light striking the diffuser light exit region 14 actually emerges as stray light from the built-in lamp. In this case, a lying in the direction of illumination, outwardly facing collar of the direct light reflector 8 between the cover 4 and the diffuser disc 16 may be clamped, so that in this way the direct light reflector 8 is fixed in the region of the cover 4. Alternatively, it would also be possible to use a cover disk which terminates only the diffuse light exit region 14 and which has a circular hole in the region of the direct light exit region 12.

The outside of the direct light reflector 8 and the inner sides of the housing 2 are formed reflecting or diffusely reflecting.

On the side of the rear opening 10 of the direct light reflector 8, which faces away from the direct light exit region 12, there is an inventive head reflector 18, which has a parabolic shape. Partly within the head reflector 18, partly between this head reflector 18 and the rear opening 10 is the illuminant region 20 according to the invention, in which a light source 22 designed as a halogen high-pressure lamp comes to lie in its operating position (FIGS. 1 and 3).

Between the rear opening 10 of the direct light reflector 8 and the illuminant 22 is a substantially circular lens 24 whose diameter corresponds approximately to the diameter of the head 8 and reflectors can accordingly ensure that the light from the bulb 22 directly or indirectly via the head reflector 18 in the interior of the direct light reflector 8 radiated light must pass through the lens 24, so that sets a constant over the entire surface of the lens 24 and compared to the light bulb 22 reduced luminance, thereby ultimately a particularly uniform illumination of Interior of the direct light reflector 8 results.

The luminous means 22 is held in a luminous means holder 26, which in turn is accommodated in a holding element 28. The holding element 28 together with a holding plate 30 and two screws 32 a holder for the lens 24th

At the back of the Kopfreflektors 18 is a U-shaped retaining web 34 is formed on which the Kopfreflektor 18 can be firmly connected to the bottom of the housing 2. The U-shaped retaining web 34 has two conically outwardly tapering, also U-shaped recesses 36, in which two conical retaining pins 38 are hooked, which are laterally formed on the holding element 28.

When hinged in the recesses 36 retaining pin 38 provides an intermediate spring element 40 that the pivotable relative to the head reflector 18 holding member 28 is held in its horizontal operating position shown in FIGS. 1 and 3. Contrary to the force of the spring 40, the holding member 28 can be pivoted, for example, by gripping the lens 24 after opening the frame 6 in a position as shown in FIGS. 2 and 4. In this position, the light source 22 is easily accessible for the purpose of Auswechseins.

The photometric interaction between head reflector 18, light source 20, diffuser 24, housing inner side 2 and the inside and the outside of the direct light reflector 8 has already been explained in detail above. The head reflector 18, together with the diffusing screen 24, ultimately ensures intensive illumination via the direct light exit region 12. Since the diffusing screen 24 is arranged at a distance from the head reflector 18 and also from the rear opening 10 of the direct light reflector 8, a comparatively smaller distance is achieved , however, a sufficiently large proportion of light components over the spaces created by the said distances and also over the light-conducting egg. properties of the diffuser 24 not in the interior of the direct light reflector 8, but on the reflective or remittierenden insides of the housing 2 and on the also reflective or remittierende outside of the direct light reflector 8 to Diffuslicht- outlet region 14, from which this light component then as scattered light from the cover. 4 exit.

LIST OF REFERENCE NUMBERS

2 housings

4 cover disc

6 frames

8 direct light reflector

10 rear opening

12 direct light exit area

14 Diffuse light exit area

16 diffuser disk

18 head reflector

20 illuminant area

22 bulbs

24 diffuser

26 illuminant solution

28 retaining element

30 retaining plate

32 screws

34 retaining bridge

36 recesses

38 retaining pin

40 spring element

Claims

17Ansprüche

1. Recessed luminaire with a housing (2) and a holder for fastening in a mounting surface, in particular a ceiling, a bulb holder (26) for holding a light bulb (22) in a light emitting area (20) and a direct light reflector (8) with a in the illumination direction, a direct light exit region (12) defining direct light reflector opening which is at least partially surrounded by a Diffuslicht- outlet region (14), wherein the direct light reflector (8) has a rear opening (10), characterized in that on the direct light A discharge reflector (18) separate from the direct light reflector (8) is provided on the exit region (12), which is shaped such that it delivers at least a majority of the light emitted from the illuminant region (20) and impinging on it Light into the interior of the direct light reflector (8) directs.

2. Recessed luminaire according to claim 1, characterized in that the head reflector (18) has a concave, the illuminant region (20) opening shape.

3. Recessed luminaire according to claim 2, characterized in that the head reflector (18) is designed as a parabolic reflector. 18

4. Recessed luminaire according to one of the preceding claims, characterized in that the illuminant region (20) on the direct light exit region (12) facing away from the rear opening (10) of the direct light reflector (8) is arranged, so that the illuminant region (20) between the rear opening (10) of the direct light reflector (8) and the head reflector (18).

5. Recessed luminaire according to one of the preceding claims, characterized in that the extension of the head reflector (18) in a plane parallel to the direct light exit region (12) extending direction is smaller than the diameter of the rear opening (10) of the direct light reflector (8) ,

6. Recessed luminaire according to one of the preceding claims, characterized in that the extension of the head reflector (18) in a direction parallel to the plane of the direct light exit region (12) extending direction is greater than the longitudinal extension of the illuminant region (20) or the illuminant (22). in a direction also parallel to the plane of the direct light exit region (12).

7. Recessed luminaire according to one of the preceding claims, characterized in that the illuminant region (20) is arranged at least substantially within the Kopfreflektors (18). 19

8. Recessed luminaire according to one of the preceding claims, characterized in that the luminous means holder (26) is designed to hold a halogen lamp, a high-pressure halogen lamp (22) or another point-shaped light source.

9. Recessed luminaire according to one of the preceding claims, characterized in that on the side facing away from the head reflector (18) side of the illuminant region (20) a lens (24) is arranged.

10. Recessed luminaire according to claim 8, characterized in that e e e c e s e s that the diffusing screen (24) extends parallel to the plane of the direct light exit region (12).

11. Recessed luminaire according to one of claims 9 or 10, characterized in that e e e c e s e s that the diffusing screen (24) between the illuminant area (20) and rear opening (10) of the direct light reflector (8) is arranged.

12. Recessed luminaire according to one of claims 9 to 11, characterized in that the lens (24) from both the head reflector (18) and from the rear opening (10) of the direct light reflector (8) is arranged spaced, these distances between 0, 5 cm and 3 cm. 20

13. Recessed luminaire according to one of claims 10 to 12, characterized in that the extension of the diffusing screen (24) in a direction parallel to the plane of the direct light exit region (12) is approximately the same as the corresponding extension of the

Head reflector (18).

14. Recessed luminaire according to one of claims 9 to 13, characterized in that it e e c e n e c e s that the diffusing screen (24) is formed as a UV and / or color filter.

15. Recessed luminaire according to one of the preceding claims, characterized in that the luminous means holder (26) is in particular pivotally mounted together with a diffuser holder (28, 30, 32).

16. Recessed luminaire according to claim 15, characterized in that there is a maximum pivoting angle between 45 ° and 90 °, in particular between 50 ° and 70 °.

17. Recessed luminaire according to one of claims 15 or 16, characterized in that the bulb holder (26) and in particular also the lens holder (28, 30, 32) are biased by a spring element (40) in its operating position. 21

18. Recessed luminaire according to one of claims 15 to 17, characterized in that the luminous means holder (26) and the lens holder (28, 30, 32) are provided in a common holding element (28).

19. Recessed luminaire according to one of the preceding claims, characterized in that the direct light reflector (8) is pivotally supported in the housing (2).

20. Recessed luminaire according to one of the preceding claims, characterized in that e e e c e e n e that the direct light exit region (12) and the diffuse light exit region (14) by a common light source (22) can be acted upon.

21. Recessed luminaire according to one of the preceding claims, characterized in that in a housing region surrounding the direct light reflector (8) and / or the head reflector (18) a separate additional reflector is provided, which is formed in particular by inner surfaces of the housing (2).

22. Recessed luminaire according to claim 21, characterized in that the diffuse light exit region (14) from the lighting means (22) exclusively indirectly via the additional reflector (2) and / or on the lens (24) can be acted upon. 22

23. Recessed luminaire according to one of the preceding claims, characterized in that the direct light reflector (8) is designed to be reflective or diffusely reflecting on its outside.

24. Recessed luminaire according to one of the preceding claims, characterized in that the housing (2) in the region of the diffused light exit region (14) and preferably also in the region of the direct light exit region (12) by a transparent disc (4) in particular at least substantially dustproof is completed.