EP3699483A1 - Light and support for a linear light strip - Google Patents

Abstract

A lamp (10) is specified, with at least one linear light band (1), in particular an LED light band, a carrier (3) on which the linear light band (1) is mounted, a front side (11) from which the Luminaire (10) emits a desired light in its intended operation, the carrier (3) having a main surface (31) facing the front side (11) and at least one channel (2) being formed in the carrier (3) in which the linear light band (1) is mounted on a mounting surface (4). Furthermore, a support (3) for a lamp with a linear light band is specified.

Description

A light, in particular a light-emitting diode light, LED light for short, with a channel reflector for the linear light band and a carrier for a linear light band of such a light are described.

It is an object of the invention to specify a lamp and a carrier of the type mentioned at the outset, which can be easily equipped with different luminous images and which can be produced in a simple manner.

The object is achieved by a lamp or a carrier with the features of claim 1 and claim 7, respectively. Advantageous further developments are the subject of the dependent claims. The disclosure content of the patent claims is hereby fully incorporated into the description by reference.

The luminaire has at least one linear light band, in particular an LED light band. The light band is mounted on a carrier in the luminaire. The carrier has a main surface facing the front of the luminaire and a channel in which the linear light band is mounted.

In one embodiment of the luminaire or of the carrier, a mounting surface of the carrier in the channel is inclined to the main surface. If in one embodiment the main surface is not continuously flat, then it is closed underneath understand that the mounting surface is inclined to the area of the main surface adjacent to the channel.

In one embodiment of the lamp or of the carrier, a mounting surface of the carrier in the channel forms an angle with the main surface of the carrier which is less than or equal to 90 degrees.

In one embodiment of all of the various embodiments described above, the linear light band is designed to emit electromagnetic radiation into the channel, i.e. towards the inner surfaces of the channel, when the luminaire is in operation, and the channel is designed as a reflector and is designed to at least absorb the electromagnetic radiation partially reflect towards the front of the lamp. For example, the linear light band is designed and mounted in the channel in such a way that it emits more than 50%, in particular more than 70% of the electromagnetic radiation emitted by the light band during operation of the light band into the channel.

In one embodiment of all the various embodiments described above, the carrier with the at least one channel is made from a metal sheet.

In one embodiment of all the various embodiments described above, the channel has at least one reflective and / or a white and / or a differently colored surface in order to achieve desired reflector properties of the channel. By appropriately shaping the geometry of the cross-section of the channel perpendicular to its longitudinal direction and / or By coating the inner surfaces of the channel, the most varied of channel reflectors can be provided, for example with segmented, parabolic and / or elliptical reflector surfaces.

In one embodiment of all the various embodiments described above, reflector surfaces in the channel have a surface structure, from high-gloss to coarse.

In one embodiment of all the various embodiments described above, reflector surfaces in the channel have an optically effective surface structure. Holographic structures can also be used in the channel to achieve the desired optical properties.

In one embodiment of all the various embodiments described above, the channel is encapsulated (e.g. with PU). This leads to luminaires with particular resistance to moisture or aggressive media.

Particular advantages of a luminaire described here result in particular from the following aspects:
The light parameters of the luminaire (lumens of the luminaire, color temperature, color rendering, etc.) can be easily determined by suitable selection of the linear light band. Different light parameters can also be defined in sections in the carrier plate.

By varying the geometry of the channel, the radiation characteristics can be easily adapted to varying requirements on the luminaire (see the drawings of FIG Figures 1a to 1c ).

Reflective surfaces but also white or other colored surfaces can be used as reflector surfaces.

Extensive glare control is possible with white surfaces (also because the geometry of the channel is very small). The height of typical LED strips is 6 to 30 mm, in particular between 6 mm and 10 mm, preferably between 7 mm and 9 mm, limit values included in each case.

Various lighting distributions can be implemented by different shapes of the channel (see the examples in the below explained in more detail Figures 2a to 2f ). Extremely bright lights can be implemented. Complex shapes such as cross lights and linear lights with integrated "downlights" are possible. For example, it is also possible to directly emit illuminated letters and logos.

• Figuren 1a bis 1c, jeweils eine schematische Darstellung eines Schnittes durch eine Leuchte mit einem Träger in unterschiedlichen Ausführungsformen; und
• Figuren 2a bis 2f, jeweils eine schematische Darstellung einer Draufsicht auf eine Leuchte gemäß unterschiedlicher Ausführungsbeispiele.

The above-mentioned properties, features and advantages of the lamp and its embodiments and the way in which they are achieved are explained in more detail by the following description of the embodiments of the invention in conjunction with the corresponding figures. Show it:

• Figures 1a to 1c , each a schematic representation of a section through a lamp with a carrier in different embodiments; and
• Figures 2a to 2f , each a schematic representation of a plan view of a lamp according to different embodiments.

In the different exemplary embodiments, embodiments and refinements, identical and identically acting components are provided with the same reference symbols in each of the figures. The figures are fundamentally not true to scale. The proportions of the various components do not correspond to reality. For example, comparatively small elements can be shown exaggeratedly large for better illustration and vice versa.

In the Figures 1a to 1c The various exemplary embodiments shown for a carrier 3 of a luminaire 10 described here are a linear light band 1, here for example an LED light band, mounted in a channel 2 of a carrier plate 3. The channels 2 of the various exemplary embodiments differ in their cross-sections perpendicular to their respective longitudinal direction. The carrier plates 3 each have a main surface 31 which, when the carrier plate 3 is installed in a lamp 10, faces a front side 11 of the lamp 10. In its normal operation, the lamp 10 emits a light desired by the lamp 10 via the front side 11.

The ones in the Figures 1a and 1b The carrier plates 3 shown each have a channel 2 with a cross section of a right-angled trapezoid. The right-angled flank 21 of the trapezoid encompasses the mounting surface 4 for the linear light band 1.

The ones in the Figure 1c The carrier plate 3 shown has a channel 2 with a cross section of a parallelogram. The flank 21 of the parallelogram facing away from the main surface 31 comprises the mounting surface 4 for the linear light band 1.

The respective mounting surface 4 is transverse to the respective main surface 31 of the carrier plate 3. In the cases of Figures 1a and 1b the mounting surface 4 forms an angle α of 90 ° with the main surface 31. In the case of the Figure 1c the mounting surface 4 forms an angle α with the main surface 31 which is smaller than 90 °.

The flank 22 of the respective channel 2 opposite the mounting surface 4 and / or the channel bottom 23 connecting the two flanks 21, 22 of the respective channel 2 are at least partially designed in such a way that a radiation 8 impinging on them from the linear light band 1 can be converted into a desired Redirect the main radiation direction 7 of the lamp 10 (in the Figures 1a to 1c each indicated by the single dashed lines). The flank 21 and / or the channel bottom 23 are / is designed to be at least partially reflective for the radiation 8 to be deflected. This is implemented, for example, by means of a reflective coating of the corresponding inner surfaces of the channel 2 or by forming the carrier plate 3 at least partially with reflective material.

The mounting surfaces 4 each close with the main surface 31, here in each case the main extension plane 5 of the carrier plate 3, a right (in the exemplary embodiments of Figures 1a and 1b ) or an acute angle α (in the embodiment of Figure 1c ) one, in such a way that the optical axes 6 of the linear light strip 1 mounted on the associated mounting surface 4 run parallel to the main extension plane 5 or at an angle to the main extension plane 5, preferably away from a main radiation direction 7 from the carrier plate 3, i.e. the luminaire 10.

The carrier plate 3 is, for example, made of a metallic sheet in which a channel 2 as described above is formed, for example by deep drawing. On a flank 21 of the channel 2, which is provided as the mounting surface 4 for the linear light band 1, the linear light band 1 is attached, for example, by means of an adhesive layer or by means of an adhesive film that is adhesive on both sides.

The carrier plate 3 can alternatively be, for example, a suitably shaped profile, for example an aluminum profile manufactured by means of continuous casting.

The carrier plate 3 is each - with the exception of the channel 2 - flat. In other exemplary embodiments, it can be curved, depending on which radiation characteristic is desired from the carrier plate 3.

In the embodiments of Figures 1a to 1c electromagnetic radiation 8 is emitted from the luminaire emission direction 7 away into the channel 2 by the linear light band 1. In other words, the respective linear light band 1 each has at least one light band emission direction 9, which points away from the luminaire emission direction 7 into the channel 2.

In the exemplary embodiments described above, for example, in each case at least one inner surface 22, 23 of the channel 2 is designed to be reflective for radiation 8 emitted by the linear light band 1 when the lamp is in operation.

A linear light band 1 is in particular a light emitting diode band (in the following LED band (LED stands for Light Emitting Diode)). In the present case, this is in particular an LED strip in which a plurality of LED chips in chip-on-board (COB) technology or a plurality of LED components already provided with an LED housing on an elongated preferably flexible printed circuit board (also called Flex-PCB) are mounted and electrically connected. If it is suitable for the desired light pattern, the circuit board can alternatively be rigid at least in partial areas. Such LED components provided with an LED housing are, for example, light-emitting semiconductor bodies provided with a leadframe-based plastic casing (for example PLCC2 SMD LEDs, PLCC4 SMD LEDs or PLCC6 SMD LEDs). The light-emitting semiconductor bodies can be based on inorganic or organic electroluminescent materials.

A linear LED light strip for use in a luminaire 10 according to one of the embodiments, configurations and exemplary embodiments explained here is for example in the data sheet BLONE1300024DC12000830000W20 (available at https://cdn2.regroshop.at/medias/sys_Regro/sheets/sheets/h03 / hd8 / 9006597767198 / Te-BL124120003020.pdf). This is a top view LED light strip in which the optical emission axes of the LED components mounted on the Flex-PCB run nominally perpendicular to the mounting surface of the Flex-PCB. As an alternative to a flexible linear LED light band, if no flexible linear light-emitting diode module is provided, an at least partially rigid linear LED light band can also be used.

For example, the linear light band 1 is designed and mounted in the channel 2 in such a way that it emits more than 50%, in particular more than 70% of the electromagnetic radiation 8 emitted by the light band 1 during operation of the light band 1 into the channel 2.

For example, when using a laterally emitting linear light band 1, such as a linear LED light band with laterally emitting LED components, so-called side lookers, it is not necessary, for example, that the mounting surface 4 with the main surface 31 as it is in the embodiments of Figures 1a to 1c is the case, includes a right or acute angle α. The angle α can then be obtuse, i.e. greater than 90 °.

In the Figures 1a to 1c In the embodiments shown, the main surfaces are flat. Modified embodiments of these exemplary embodiments have, for example, a carrier plate 3 with a curved main surface 31, for example with a concave or convex curve or, for example, with concave and convex structures. A different structuring of the main surface 31 is also conceivable.

The ones in the Figures 2a to 2f Different exemplary embodiments for lights 10 shown schematically in a plan view of the respective front side 11 illustrate that it is possible in a simple manner to implement various lighting distributions, luminous images and / or lighting profiles by correspondingly shaping the respective at least one channel 2 along the main surface 31 of the carrier plate 3 . Extremely bright lights can be implemented. Complex shapes such as cross lights and linear lights with integrated "downlights" are possible. For example, it is also possible to directly emit illuminated letters and logos (cf. Figure 2f ).

The at least one channel 2 is, for example, potted in a simple manner (e.g. with PU). This leads to luminaires with particular resistance to moisture and / or aggressive media.

By suitable selection of the linear light band 1, light parameters of the lamp 10 (lumens of the lamp, color temperature, color rendering, etc.) can be determined easily. For example, different light parameters are defined in sections in the carrier plate 3.

For example, by varying the geometry of the cross section of the at least one channel 2 perpendicular to its direction of longitudinal extent, its emission characteristic is determined (see the drawings of FIG Figures 1a to 1c ).

For example, reflective surfaces but also white or other colored surfaces are used as reflector surfaces in the at least one channel 2. For example, by appropriately shaping the geometry of the cross-section of the at least one channel 2 perpendicular to its longitudinal direction and / or coating the channel inner surfaces 22, 23, a wide variety of channel reflectors are provided, for example with segmented, parabolic and / or elliptical reflector surfaces.

For example, reflector surfaces of the at least one channel 2 have a surface structure, from high-gloss to coarse. Furthermore, reflector surfaces of the at least one channel 2 have, for example, an optically effective surface structure; for example, holographic structures are used to achieve desired optical properties in the at least one channel 2.

Extensive glare control of the luminaire 10 is possible with white surfaces (also because the geometry of the channel is very small). The height of typical LED strips as a linear light strip 1 is 6 to 30 mm, in particular between 6 mm and 10 mm, preferably between 7 mm and 9 mm, limit values included in each case.

Although the invention has been illustrated and described in detail using exemplary embodiments, it is not restricted to the disclosed exemplary embodiments and the specific combinations of features explained therein. Further variations of the invention can be obtained by one skilled in the art without departing from the scope of the claimed invention.

List of reference symbols

1

linear light band

2

Gutter

21.22

Flank

23

Channel bottom

3

Carrier or carrier plate

31

Main area

4th

Mounting surface

5

Skin extension plane of the carrier plate

6th

optical axis

7th

Luminaire beam direction

8th

electromagnetic radiation

10

lamp

11

Front of the lamp

α

angle

Claims (12)

Lamp (10) with - at least one linear light band (1), in particular an LED light band, - a carrier (3) on which the linear light band (1) is mounted, - A front side (11) from which the lamp (10) emits a desired light in its intended operation, wherein - The carrier (3) has a main surface (31) facing the front side (11), and - At least one channel (2) is formed in the carrier (3) in which the linear light band (1) is mounted on a mounting surface (4). Luminaire (10) according to Claim 1, in which the mounting surface (4) is inclined to the main surface (31). Luminaire (10) according to Claim 1 or 2, in which the mounting surface (4) forms an angle (α) with the main surface (31) which is less than or equal to 90 degrees. Light (10) according to one of the preceding claims, in which - The linear light band (1) is designed to emit electromagnetic radiation (8) into the channel (2) when the lamp (10) is in operation, and - the channel (2) is at least partially designed as a reflector in order to at least partially deflect the electromagnetic radiation (8) towards a main emission direction (7) of the lamp (10). Luminaire (10) according to one of the preceding claims, in which the linear light band (1) is set up and mounted in the channel (2) in such a way that it is more than 50%, in particular more than 70%, of the amount during operation of the lamp (10 ) from the light band (1) emitted electromagnetic radiation (8) into the channel (2). Luminaire (10) according to one of the preceding claims, in which the carrier (3) with the channel (2) is made from a metal sheet. Carrier (3) for a lamp (10), which has at least one channel (2) with a mounting surface (4) on which at least one linear light band (1) is mounted. Carrier (3) according to claim 7, in which the mounting surface (4) is inclined to a main surface (31) of the carrier (3) which faces a front side (11) of the lamp (10). Support (3) according to Claim 7 or 8, in which the mounting surface (4) forms an angle (α) with the main surface (31) which is less than or equal to 90 degrees. Carrier (3) according to one of claims 7 to 9, in which - The linear light band (1) is designed to emit electromagnetic radiation (8) into the channel (2) when the lamp (10) is in operation, and - the channel (2) is at least partially designed as a reflector in order to at least partially deflect the electromagnetic radiation (8) towards a main emission direction (7) of the lamp (10). Support (3) according to one of claims 7 to 10, in which the linear light strip (1) is set up and mounted in the channel (2) in such a way that it is more than 50%, in particular more than 70%, of the operation of the lamp (10) from the light band (1) emitted electromagnetic radiation (8) emitted into the channel (2). Support (3) according to one of Claims 7 to 11, in which the support (3) with the channel (2) is made from a metal sheet.

Images