DE202010015526U1 - Luminaire, in particular lamp for a vehicle seat, in particular for a passenger seat - Google Patents

Abstract

Luminaire, in particular lamp for a vehicle seat, in particular lamp for a passenger seat, comprising at least one light source, at least one light-limiting element and at least one imaging optical element for imaging the light-limiting element on a surface to be illuminated, characterized in that the size, shape, arrangement, integral transmission and / or spectral transmission of the light-limiting element is variable.

Description

The The present invention relates to a luminaire, in particular a luminaire for one Vehicle seat, in particular a light for a passenger seat, after the preamble of claim 1.

in the Interior of vehicles, especially of airplanes, are since used long reading lamps. These are generally used the passenger a local light source for illuminating an example to read a book or newspaper sufficient area for Available too put. Known reading lamps have the disadvantage that their stray light Passengers on neighboring places to disturb can. Furthermore, usually no optimal illumination of the Read necessary area reached.

It The object of the present invention is a luminaire, in particular a light for one Vehicle seat, in particular a passenger seat light, the o. g. Disadvantages not.

These The object is given by a luminaire as in the independent claims solved. advantageous Embodiments are given in the dependent claims.

A lamp according to the invention, which is particularly suitable as a reading lamp, and preferred for a Vehicle seat, especially for a passenger seat is provided comprises at least one light source, for example, one or more LEDs or a halogen lamp or may be an exit of a light guide. Furthermore, the lamp includes at least one light-limiting element, in particular as a diaphragm act and in the beam path of the light source to limit a can be arranged from the light source emitted light beam. The lamp further comprises at least one imaging optical Element for imaging the light-limiting element onto a light to be illuminated Area, the outside the lamp is arranged. In particular, by mapping an edge structure of the imaging optical element, the illumination on a sharp limited area be limited in the case of a training of the lamp as a reading lamp for example, rectangular or pillow-shaped.

According to claim 1 is the size that Shape, the arrangement, the integral transmission and / or the spectral Transmission of the light-limiting element or an opening of the adjustable light-limiting element. As a result, the illuminated area and / or the illumination the area for different Requirements cases be adapted or limited. For example, the size and / or the shape of the illuminated area to the at different seating positions or postures each needed for reading area customizable. Likewise, the brightness and / or the color of the illuminating Light can be adapted to different requirements. Especially can also be at different lighting directions or distances the illuminated area from the light a fault be avoided by persons on adjacent seats. A luminaire according to the invention may also include other optical elements, such as other lenses and / or mirrors.

in the Difference to known reading lamps, where one of the light source upstream optics is used only to the light intensity in the center of To increase the light cone is therefore inventively illuminated area limited, for example, form, brightness or color of the illuminated area or whose limitation can be influenced. For example, a Reading light pivoted to illuminate a more distant object, It may be useful to limit the color, or luminosity of the To change the light cone to adequately illuminate this and adjacent passengers not to dazzle.

According to one preferred embodiment of Invention is the at least one light-limiting element as a diaphragm, especially as changeable Aperture formed. The fact that the aperture or the edge of the opening of the Aperture is displayed in the field to be illuminated, a unique, in particular achieved a sharp boundary of the illuminated area. Preferably, the diaphragm is positioned in the beam path such that the image on the surface to be illuminated is as rich in contrast as possible. As a result, a minimum of stray light outside the illuminated Area reached. The fact that the panel is designed to be variable in any shape, Is it possible, to vary the light beam generated by the lamp in any form.

Farther preferred is a uniform as possible light distribution within the illuminated area. For this purpose, in particular at least one between the light source and light-limiting element arranged collimator optics available are. The collimator optics may in particular comprise a convex lens, the uniform light distribution generated in the aperture plane. The collimator optics can also be a comprise lens formed integrally with an LED.

Furthermore, the luminaire may comprise at least one color and / or neutral filter. As a result, an optimal adaptation of the light to the requirements, for example as a reading lamp, achieved become. Furthermore, the color of the light beam generated by the lamp can be varied by adjustable color or neutral filter, so that an adaptation to different needs is possible.

According to one embodiment According to the invention, the luminaire further comprises at least one unchangeable one light-limiting element. This can, for example, with the changeable interact light limiting element to limit the illuminated area or in addition prevent the formation of stray light in the optical system of the luminaire.

In Preferably, the lamp has a cover, the For example, may be formed as a flat plate and in the beam direction after the at least one imaging optical element or after an imaging optics can be arranged. As a result, the optical System finished and against the ingress of dirt as well against damage protected.

The At least one light-limiting element can be electrically changed be, for example, by the transmission and / or reflection electrically or electronically adjusted. In particular, the aperture are designed as a transmissive liquid crystal display (LCD), wherein by electrical activation of individual pixels, the transmission can be influenced locally. This is the shape, brightness or color of the illuminated area or their limitation almost arbitrarily changeable. With appropriate Beam path can do this, for example, by an arrangement of many small, electrically pivotable mirrors can be achieved. To this Way could also size and / or Shape of an aperture changed become.

According to one preferred embodiment the at least one light-limiting element mechanically changeable. In particular, a diaphragm can be adjusted by mechanical means be, for example, the size and / or shape of an aperture or the arrangement of a diaphragm relative to the light source and / or the Imaging optics changeable can be. Likewise, the beam path can be pivoted via different diaphragms so that also different sizes and / or shapes of the illuminated area can be achieved.

Farther it is advantageous that the at least one light-limiting element in dependence of An orientation of the lamp is changeable. As a result of that the located in the beam path, shown light-limiting element dependent From the orientation of the lamp in the room can be changed, a automatic adjustment of the size and / or Shape of the illuminated area to achieve different requirements; as well the distance of an area, in which the light-limiting element is sharply imaged, by changed the light become. In particular, this can be done the size and / or Shape of an opening the at least one light-limiting element in dependence of an orientation or orientation of the lamp changeable be.

In Particularly preferred is a change of at least one light-limiting element coupled with a pivoting movement of the lamp. Such a pivoting movement can serve, in particular, the direction adapt the light beam generated by the lamp such that a desired one Area is illuminated, for example, a position of the Vehicle seat or a posture of the passenger. For example, after the on Luminous area to read in a sitting posture be suitable while in a correspondingly adjustable seat in a different Direction arranged and further away from the light area for reading in lying body position may be suitable. Because the change of at least one light-limiting element is coupled with the pivoting movement of the lamp, can be achieved that the position, size and shape of the illuminated area automatically optimally adjusted when the lamp is swiveled. hereby not only an optimal illumination of the surface to be illuminated is achieved, but also a disturbance neighboring passengers avoided.

According to one particularly preferred embodiment According to the invention, the luminaire comprises a basic body which is suitable for fastening a support structure, for example on a seat back, on a stand or also a wall or a ceiling of a room is formed. Furthermore, the luminaire comprises according to this embodiment a lamp body, the one with the main body pivotally connected. In this case, a discharge of the operation of the Lamp resulting heat be provided in the support structure.

In Preferably, the light-limiting element is associated with the base body, while the Imaging optics the lamp body assigned. As a result, in a simple manner, a relative movement the light-limiting element, such as a diaphragm, and the imaging optics achieved a change in the light-limiting Elements in dependence allowed by the pivoting movement of the lamp.

In particular, the light-limiting Element be firmly connected to the body. In a pivoting movement of the lamp body and thus the imaging optics thus different areas of the light-limiting element, such as a diaphragm, are effective. In this way, a corresponding change of the beam generated by the lamp or the position, shape, size and illumination of the surface to be illuminated can be achieved in a simple and secure manner.

A Particularly simple arrangement results when the light source the lamp body assigned. As a result, the imaging optics also at different Pivoting positions each optimally work. The light source can in principle but also the basic body be assigned.

According to one Another aspect of the invention may in a luminaire, in particular a light for a vehicle seat, in particular a reading light for a Passenger seat having at least one light source, at least one light-limiting element and at least one imaging optical element for imaging the light-limiting Elements on a surface to be illuminated at least one imaging optical element be designed such that the light-limiting Element, in particular an edge of the light-limiting element, not to the infinite, but to a finite distance from the Luminaire arranged surface is shown sharply. In particular, such an area in one arranged at a reading lamp distance from the lamp be, for example, at a distance of about 0.5 m to about 2 m.

It it is understood that the above and the following yet to be explained features not only in the specified combination, but also in other combinations or alone, without to leave the scope of the present invention.

Further Aspects of the invention will become apparent from the following description preferred embodiments the invention and the attached Drawing. Show it:

1a a first embodiment of a lamp according to the invention in a schematic longitudinal section;

1b the variable aperture of the embodiment according to 1a in plan view;

2a A second embodiment of a lamp according to the invention in a schematic longitudinal section;

2 B an embodiment of a diaphragm in isometric view;

3 a further embodiment of a diaphragm;

4 the aperture of the 3 inserted in a blind holder;

5 an isometric view of a lamp according to the embodiment of the 2a ,

In 1 is an embodiment with a variable aperture 4 shown, wherein the aperture can be changed directly by a hand lever. In a preferably round bore of the housing 2 , which are concentric with the optical axis 8th runs, the individual optical elements are taken. A condenser lens 3 is positioned so that by a light source 1 outgoing light the variable aperture 4 illuminated as optimally as possible. The lenses 5 . 6 are positioned so that the variable aperture 4 is imaged on the surface to be illuminated. The optical system is illuminated by a lens 7 completed. The light source 1 gives its heat over a thermally conductive plate 10 to a heat sink 9 which may be a support structure of the luminaire or may be associated with such.

The aperture 4 especially as normal to the optical axis 8th arranged iris diaphragm be formed, wherein the opening width d of the diaphragm 4 via an adjustment mechanism 11 is adjustable. The adjusting mechanism may be designed, for example, as manually pivotable about an angular range of about 90 ° lever. As a result, a sharp, almost circular boundary of the illuminated area is achieved.

2a shows a further embodiment with a variable aperture. Here is the case 2 as about a rotation axis 15 pivotable lamp body formed, which is the light source 1 , the condenser lens 3 , the imaging lenses 5 . 6 and the lens 7 receives. The light source 1 is about a plate 10 with a pivotable carrier, which also serves to dissipate the heat generated connected. The possible pivoting movement of the lamp body is in 2a indicated by a curved double arrow. The aperture 12 is about holder 17 with a fixed body 13 connected and therefore remains at the pivoting motion at rest.

As in 2a illustrated, the aperture may for example have a widening section or a triangular-shaped slot. This works with a connected in the lamp body, non-variable aperture 14 together to the light beam to limit. When pivoting the lamp body, therefore, different areas of the base body act depending on the pivot position 13 connected aperture 12 with the case 2 , ie, the pivotable lamp body associated aperture 14 together to produce an approximately trapezoidal illuminated surface whose size depends on the pivotal position.

According to 3 can one with the main body 13 connected, fixed aperture 12 ' for example, be provided with a limited of parallel sides slot, which merges into a trapezoidal opening. As a result, in a first pivot position, a rectangularly limited and in a second pivot position, a trapezoidally limited light beam can be generated. As a result, for example, a smaller rectangular area arranged close to the luminaire and a larger, trapezoidal or also rectangular-shaped surface which is further away from the luminaire, can be optimally illuminated in each case. In the 3 Aperture shown in plan view 12 ' is according to 4 in one with the main body 13 connected aperture holder 18 inserted cylindrically curved.

5 shows a lamp according to the embodiment of the 2a , for example, with a diaphragm according to 3 and 4 , can be trained. The main body 13 can be fixed to a support structure, such as a wall or a seat back (not shown), connected. A cable 19 is used for power supply and for transmitting, for example, the switching signal of a switch 20 , The lamp body 2 is about an axis 15 pivotable with the main body 13 connected. The beam generated by the lamp occurs in the representation of 5 down from the lamp body. Will the lamp body 2 manually pivoted forward, thereby not only the direction of the beam, but also its cross-sectional shape and size is changed, so that the shape and size of the illuminated field change with the tilt angle. So can with swung down lamp body 2 , as in 5 shown, the illuminated area for the reading in abdominal or lateral position to be determined, while upwardly pivoted lamp body 2 the illumination for reading in supine position is optimal. Furthermore, the illuminated area is always sharply defined within the area of a place or compartment, so that disruption of other passengers is excluded. By dimming the light further advantages can be achieved. In addition to the manual operation and an electrical actuation of the pivoting movement and the associated change in the aperture is possible.

Not to all figures, all reference numerals are explained. Not to a figure explained Reference numerals have the same meaning as in the other figures.

LIST OF REFERENCE NUMBERS

1

light source

2

casing

3

condenser

4

variable cover

5

lens

6

lens

7

Lens

8th

optical axis

9

heat sink

10

plate

11

adjustment

12 12 '

cover

13

body

14

cover

15

swivel axis

16

carrier

17

visor clips

18

visor clips

19

electric wire

20

switch

Claims (16)

Luminaire, in particular lamp for a vehicle seat, in particular lamp for a passenger seat, comprising at least one light source, at least one light-limiting element and at least one imaging optical element for imaging the light-limiting element on a surface to be illuminated, characterized in that the size, shape, arrangement, integral transmission and / or spectral transmission of the light-limiting element is variable. Luminaire according to claim 1, characterized the at least one light-limiting element is a variable one Aperture is. Luminaire according to claim 1, characterized that the luminaire at least one between light source and light-limiting Element arranged collimating optics includes. Luminaire according to claim 1 or 2, characterized the luminaire comprises at least one color and / or neutral filter. Luminaire according to one of the preceding claims, characterized in that the lamp is at least one non-variable light-limiting element comprises. Luminaire according to one of the preceding An claims, characterized in that the lamp has a cover. Luminaire according to one of the preceding claims, characterized characterized in that the at least one light-limiting element electrically changeable is. Luminaire according to one of the preceding claims, characterized characterized in that the at least one light-limiting element mechanically changeable is. Luminaire according to one of the preceding claims, characterized characterized in that the at least one light-limiting element in dependence of An orientation of the lamp is changeable. Luminaire according to one of the preceding claims, characterized characterized in that the size and / or Shape of an opening the at least one light-limiting element in dependence of an orientation of the lamp (in space) is changeable. Luminaire according to one of the preceding claims, characterized that marked a change the at least one light-limiting element with a pivoting movement the lamp is coupled. Luminaire according to one of the preceding claims, characterized in that the luminaire has a basic body for attachment to a supporting structure a room and a lamp body, the with the main body is pivotally connected. Luminaire according to the preceding claim, characterized in that the light-limiting element is the base body and the imaging optics the lamp body assigned. Luminaire according to the preceding claim, characterized in that the light-limiting element is firmly connected to the base body is. Luminaire according to one of the preceding claims, characterized characterized in that the light source is associated with the lamp body. Luminaire according to one of the preceding claims or according to the preamble of claim 1, characterized in that the at least one imaging optical element for imaging the light-limiting element at a finite distance from the luminaire arranged to be illuminated surface is formed.

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