Light and heat-generating module

Abstract

A light and heat-generating module (100) and a luminaire thereof are provided. The light and heat-generating module (100) comprising a stack of a first carrier (110), and a second carrier (140) extending in a first and second plane, P1, P2, respectively, an arrangement of a plurality of light emitting diode, LED, light sources (120) on a first side (130) of the first carrier, and a plurality of heating elements (150) configured to generate thermal radiation (155) on a first side of the second carrier. Neighboring heating elements are mutually spaced by a respective space (170). The first side of the first carrier is arranged to face a second side (180) of the second carrier, so that the arrangement of the plurality of LED light sources is aligned with the respective spaces. Each LED light source is arranged to emit LED light through at least one of the respective spaces.

Description

[0001] LIGHT AND HEAT-GENERATING MODULE

[0002] FIELD OF THE INVENTION

[0003] The present invention generally relates to a light and heat-generating module. More specifically, the present invention is related to a light and heat-generating module comprising light-emitting diode, LED, light sources and heating elements.

[0004] BACKGROUND OF THE INVENTION

[0005] Infrared heating panels and transparent carbon-based heating foils are used in the prior art for providing heating for a space. In particular, a variety of devices for generating heat radiation are available.

[0006] There are various issues and problems with heating panels. In particular, heating panels can be cumbersome as the heating panels need to be located at particular locations and directed towards users for effective use. Heating panels occupy a space on a wall or ceiling, thereby taking up space that then cannot be used for other purposes. Consequently, there is a desire for improved heating panels.

[0007] The use of light emitting diodes (LEDs) for illumination purposes continues to attract attention. Compared to incandescent lamps, fluorescent lamps, neon tube lamps, etc., LEDs provide numerous advantages such as a longer operational lite, a reduced power consumption, and an increased efficiency related to the ratio between light energy and heat energy. In particular, LED lights are highly appreciated as they have enabled compact planar light sources such as light panels.

[0008] In the prior art, there exist combined lighting and heating devices which have been implemented to neutralize contaminants. However, there remains a stark need for a development in this field by apparatuses and combined lighting and heating devices which may provide an improved indoor temperature management and lighting. In particular, there is a need for an optimized illumination and heating for smaller / individual areas such as workplaces.

[0009] Hence, it is an object of the present invention to combine the advantageous properties of heating panels in respect to heating spaces and the advantageous properties of LEDs with respect to aesthetics and light distribution purposes to provide a light and heat- generating module. More particular, it is an object of the present invention resolve, or alleviate at least one of the aforementioned problems.

[0010] SUMMARY OF THE INVENTION

[0011] It is of interest to overcome at least some of the deficiencies related to heating panels, and in particular for achieving an improved indoor temperature and lighting management of a space whilst providing a non-complex and / or conveniently operated light and heat-generating module.

[0012] This and other objects are achieved by providing a light and heat-generating module having the features in the independent claim. Preferred embodiments are defined in the dependent claims.

[0013] According to a first aspect of the present invention, there is provided a light and heat-generating module. The light and heat-generating module comprises a stack of a first carrier extending in a first plane, Pi, an arrangement of a plurality of light emitting diode, LED, light sources on a first side of the first carrier, wherein the plurality of LED light sources is arranged to emit LED light, a second carrier extending in a second plane, P2, and a plurality of heating elements configured to generate thermal radiation. The plurality of heating elements is arranged on a first side of the second carrier. The neighboring heating elements are mutually spaced by a respective space. The first side of the first carrier is arranged to face a second side of the second carrier, oppositely arranged the first side of the second carrier. The arrangement of the plurality of LED light sources is aligned with the spaces between the heating elements so that each LED light source of the plurality of LED light sources is arranged to emit LED light through at least one of the respective space between neighboring heating elements. The stack further comprises a non-focusing, reflective layer extending in a third plane, P3, facing a second side of the first carrier oppositely arranged the first side of the first carrier, and being spaced from the second side and from the plurality of LED light sources.

[0014] According to a second aspect of the present invention, there is provided a luminaire. The luminaire comprises a light and heat-generating module according to the first aspect of the present invention and a luminaire housing. The luminaire housing is arranged to at least partially enclose the light and heat-generating module.

[0015] Thus, the present invention is based on the concept that lighting and heating are generated from the same module or device, with the lighting being shone from positions behind the heating elements to enable an improved lighting, and heating, of a space to be illuminated (lit up) and / or heated. In particular, an optimization of the space necessary for lighting and heating fixtures is achieved by the module of the present invention, wherein heating elements are positioned on a carrier with LED light sources, also alternatively referred to as LEDs, emitting light into openings between the heating elements.

[0016] Due to the ability of the lighting and heating elements being integrated into the same module or device, the light and heat-generating module provides numerous advantages. In particular, the present invention is advantageous in that heating and lighting can be generated from the same module, and provide an improved space efficiency for heating modules and lighting modules.

[0017] There is provided a light and heat-generating module. By the term “light and heat-generating module”, it is here meant a module or device configured or arranged to generate lighting and heat, e.g. by comprising at least one lighting element and at least one heating element. The light and heat-generating module comprises a stack of a first carrier with LEDs and a second carrier with a plurality of heating elements. Herein, a stack comprises at least two layers, and the at least two layers are arranged at least substantially in parallel on top of each other. Herein, a layer is at least one element arranged substantially in a plane. The light and heat-generating module comprises a first carrier extending in a first plane, Pi. By the term “first carrier”, it is here meant an element, substrate or the like arranged to mechanically and / or electronically support LED light sources, such as (a) LED(s), an array of LEDs, etc., wherein the carrier, for example, may be a printed circuit board (PCB). Furthermore, the light and heat-generating module comprises an arrangement of a plurality of LED light sources on a first side of the first carrier. By “arrangement” it is here meant that the LED light sources are arranged in a predetermined or constructed manner on one side of the first carrier. The LED light sources may in an embodiment be one or more arrays of LEDs, or LED light sources. In other words, in an embodiment an arrangement of a plurality of arrays of LEDs may be arranged on a first side of the first carrier. The light and heat-generating module further comprises a second carrier extending in a second plane, P2. By the term “second carrier”, it is here meant an element, substrate or the like arranged for mechanical and / or electronical support of one or more elements, in particular heating elements for the present application. Examples of (second) carriers for heating elements may be a foil such as a carbon-based foil. In an embodiment, the first carrier and the second carrier can be of the same (first) type of carrier. Alternatively, the first carrier and the second carrier may be different types of carriers, i.e., a first type and a second type, respectively. A plurality of heating elements is arranged on a first side of the second carrier. The plurality of heating elements is configured to generate thermal radiation, i.e., arranged / configured to generate heat to be radiated away from the plurality of heating elements. By the term “heating element” it is meant an element, unit, device or substrate configured and / or suitable to generate thermal radiation, e.g., by converting electricity, conductive heat or convection heat into thermal radiation. It will be appreciated that a meandering single heating element intended to generate heat is herein comprised within the term “a plurality of heating elements”. This is as segments of the meandering single heating element may be considered as individual heating elements. In other words, a single heating element, suitable to be segmented, will be herein comprised within the term “a plurality of heating elements”. Neighboring heating elements, from the plurality of heating elements, are mutually spaced by a respective space. Herein the term “respective space” means that there is a (respective) distance between neighboring heating elements. It should be noted that respective spaces may be of a same size, or alternatively, have different sizes. In an embodiment, the space itself could arise from an absence of material or substrate between the heating elements.

[0018] Alternatively, there may be another substrate or element arranged in between the neighboring heating elements, for example a substantially transmissive material, (i.e., transparent to selected electromagnetic radiation) e.g. a transparent film, epoxy, or optical element arranged to keep a distance (i.e., space) between any two or more neighboring heating elements..

[0019] According to an embodiment of the present invention, the plurality of LED light sources are linear LED arrays arranged to align with the respective space between neighboring heating elements, wherein the respective space between neighboring heating elements extends in the plane, P2, wherein the respective space is a linear transmissive material. In other words, the space between neighboring heating elements extends in the plane, P2, and the plurality of LED light sources are linear LED arrays arranged to align with the respective space, extending in the plane, P2, between neighboring heating elements. It will be appreciated, that wherein the space between neighboring heating elements is a substrate e.g., a transmissive material between the heating element, that the substrate is, in this embodiment, linear. Thus, in a further example, the respective space between neighboring heating elements are linear transmissive strips. They may for example, be arranged between linear heating elements (e.g., linear heating strips).

[0020] Herein, the first side of the first carrier is arranged to face a second side of the second carrier. In other words, the first side of the first carrier is configured so that the side with the arrangement of the plurality of LED light sources faces towards the second side of the second carrier that is opposite the first carrier. In an embodiment, the heating elements are arranged throughout the carrier, wherein the first side of the second carrier is the side facing away from the first side of the first carrier, and the second side of the second carrier is the side facing towards the first side of the first carrier. The arrangement of the plurality of LED light sources is aligned with the spaces between the heating elements. The LED light is thereby configured to pass through the space(s) between the heating elements. In other words, the LED light sources are aligned so that the light emitted from a LED light source is shone into the space between at least two neighboring heating elements, whereby the space (or substrate / element transmissive to any the wavelengths of the light emitted from the LED light source) enables light to pass “through” the second carrier from the second side of the second carrier and out the first side of the second carrier, wherein the path of light is through the space between the neighboring elements.

[0021] As mentioned, the stack further comprises a reflective layer extending in a third plane, P3. The reflective layer is arranged to face a second side of the first carrier, oppositely arranged the first side of the first carrier. Herein, the term “reflective layer” means a layer configured to reflect light of specific wavelengths for example of visible light, infrared light, ultraviolet light, etc. In other words, the reflective layer reflects electromagnetic radiation. In particular, the term “reflective layer” is herein meant as a layer that is configured to reflect a substantial amount of the electromagnetic radiation of predetermined wavelengths of the electromagnetic spectrum. The predetermined wavelengths may be defined by a type of wavelengths, for example, at least one of infrared spectrum, visible light, and ultraviolet light. The present embodiment is advantageous in that it increases the amount of light and / or thermal radiation that is ultimately projected in the desired direction, thereby increasing the efficiency and / or effectiveness of the light and heatgenerating module. There is a contraditory effect in the light and heat-generating module, i.e. at lower temperatures LEDs have a higher efficiency than at higher temperatures. The combination in the module of both LEDs and heat generating elements involves the risk of undesired heating of the LEDs, thus lowering the efficiency. Such undesired heating should thus be limited as much as possible, which here is attained by the feature that the reflective layer is a non-focusing layer, i.e. it does not focus the reflected thermal radiation on the LEDs, for example in that the reflective layer is flat and / or diffusely reflective. By the specified configuration of the light and heat-generating module undesired excessive heating of the LEDs by backwards emitted thermal radiation of the heating elements, i.e. in the direction of the light sources, is thus counteracted According to an embodiment of the present invention, the second carrier is reflective and / or opaque for the thermal radiation and transmissive for the LED light. Undesired heating of the LEDs by backwards emitted thermal radiation of the heating elements, i.e. in the direction of the LED light sources, is thus further counteracted.

[0022] According to an embodiment of the present invention, the stack comprises a cover layer extending in a fourth plane, P4. The cover layer is arranged to face the first side of the second carrier wherein the cover layer is transmissive to at least one of infrared light of the thermal radiation and visible LED light. Hence, the cover layer is transparent to infrared light of the thermal radiation and / or visible LED light. It is appreciated that in some embodiments, the light that is desired to be projected from the LED light source is ultraviolet light, e.g., when used for as disinfecting lighting. Herein, in one embodiment the term “infrared light” means electromagnetic radiation with wavelengths of the peak of the radiation from 750 nm to 1 mm. Alternatively, “infrared light” means electromagnetic radiation with wavelength bands of the infrared emission e.g., from 700 nm to 4 pm. Herein, the term “visible light” means electromagnetic radiation with wavelengths of the peak of the radiation from 380 nm to 700 nm. It will be appreciated that the cover can be made of, for example, polymethyl methacrylate, (PMMA), a silicon dioxide - calcium carbonate and sodium carbonate mixture (e.g., glass) or variants thereof. The present embodiment is advantageous in that the cover for the light and heat-generating module provides a protective shield against the environment, thereby increasing the durability of the light and heatgenerating module. Another advantage of the cover is that it may improve the aesthetics of the light and heat-generating module. A further advantage provided by the embodiment is the enablement of a limitation on the range of light (wavelengths) that is emitted from the heating elements and the LED light sources.

[0023] According to an embodiment of the invention, the stack comprises a cover layer extending in a fourth plane, P4. The cover layer is arranged to face the first side of the second carrier, wherein the cover layer comprises a pattern. The pattern comprises cover layer portions and openings. Herein, openings are defined as the absence of a cover layer portion, i.e., the opening is in relation to the cover layer and there are cover layer portions arranged so as to leave openings in a pattern within the cover layer. The cover layer portions are opaque to at least one of infrared light of the thermal radiation and visible LED light, i.e. opaque to infrared light of the thermal radiation and / or visible LED light. It is appreciated that in some embodiments, the light that the cover layer portions are opaque to is ultraviolet light. The light and heat-generating module is arranged according to at least one of each LED light source of the plurality of LED light sources is arranged to emit LED light through at least one of the openings and each heat element of the plurality of heat element is arranged to emit infrared light of the thermal radiation through at least one of the openings. Hence, the light and heat-generating module is arranged so that each LED light source is arranged to emit LED light through at least one of the openings and / or so that each heat element is arranged to emit infrared light of the thermal radiation through at least one of the openings. It will be appreciated that the cover layer portions are made out of a suitable material / substrate to provide a cover for the light and heat-generating module. For example, the cover layer portions may be made out of PMMA, or out of metallic constituents, e.g., metals or metal alloys. The present embodiment is advantageous in that the cover for the light and heatgenerating module provides a protective shield against the environment, thereby increasing the durability. Another advantage of the cover is that it may improve the aesthetics of the light and heat-generating module. This present embodiment is further advantageous as it enables a segregation and / or a selection of the light to be used by a user of the light and heatgenerating module. A further advantage is that the cover enables a directionality of emitted LED light, and / or emitted thermal radiation. In other words, the light and heat-generating module is enabled to further manage / block directions for beam paths in that the cover portions block particular directions for the beam paths for the thermal radiation from at least one of the plurality of heating elements, and / or for the beam paths of the visible light from at least one of the plurality of LED light sources.

[0024] According to an embodiment of the invention, the stack comprises at least one element extending in a plane, P5. It is appreciated that in an embodiment, the at least one element may only extend over a partial length of the cross-sectional area of the layer stack. Alternatively, or in addition, the at least one element may extend over the full cross-sectional area of the layer stack. The at least one element is arranged to optically influence at least one of the emitted LED light and infrared light of the thermal radiation. Hence, the element(s) is (are) arranged to optically influence (at least part of) the emitted LED light and / or infrared light of the thermal radiation. Herein, the term “optically influence” means to influence, change and / or affect the propagation of the electromagnetic radiation of a particular part of the electromagnetic spectrum, for example by reflecting, refracting, limiting, aligning, collimating, diffusing, phase-shifting, splitting, beam homogenising (e.g., utilizing a beam homogenizer) etc., e.g., visible light, infrared light, or ultraviolet light. This embodiment is advantageous as the optical element enables a more fine-tuned optical control of the light (LED light, infrared light). The provision of the optical element is particularly advantageous if the light is to be directed in a particular direction, e.g., collimated, or if there is a desire to form a particular beam shape, or an energy profile of the beam.

[0025] According to an embodiment of the invention, at least one element of the at least one element (extending in the plane, Ps) is arranged so that the first side of the first carrier faces the at least one element, and the second side of the second carrier faces the at least one element. It is appreciated that there may be several elements of the at least one element arranged in the same plane, Ps, or in different planes. The present embodiment is advantageous as the at least one element enables an improved optical control (influence on and / or change of the propagation of the electromagnetic radiation) of the emitted LED light.

[0026] According to an embodiment of the invention, at least one of the at least one element is arranged, at least partially, in at least one of the respective space between neighboring heating elements. Hence, one or more element(s) is (are) arranged, fully and / or partially, in one or more of the respective space between neighboring heating elements. The present embodiment is advantageous as the arrangement of the at least one element provides an improved means for optically influencing of the LED light emitted through at least one of the respective space between neighboring heating elements.

[0027] According to an embodiment of the invention, at least one of the at least one element is arranged so that the first side of the second carrier faces the at least one element. Hence, one (or more) element(s) is (are) arranged such that the second carrier’s first side faces toward the element(s). The present embodiment is advantageous as it provides an improved means for optically influencing at least one of the LED light and the thermal radiation.

[0028] According to an embodiment of the invention, at least one of the at least one element is an optical element arranged to at least one of diffuse emitted LED light, collimate emitted LED light, and homogenize the emitted LED light. Hence, one (or more) element(s) is (are) an optical element arranged to diffuse emitted LED light, collimate emitted LED light, and / or homogenize the emitted LED light. The present embodiment is advantageous as the optical element enables an improved optical control of the emitted LED light, e.g., by diffusing / collimating / mixing LED light irradiated thereupon, or by smoothing out the energy profile of the LED light irradiated thereupon.

[0029] According to an embodiment of the invention, at least one element of the at least one element is an opaque element arranged to at least partially block at least one of the emitted LED light and the infrared light of the thermal radiation. Hence, one (or more) element(s) is (are) arranged to at least partially block the emitted LED light and / or the infrared light of the thermal radiation. The present embodiment is advantageous as an opaque element arranged to at least partially block at least one of the emitted LED light and the infrared light enables at least an improved beam shaping capability of the light (e.g., visible light and / or infrared light).

[0030] According to an embodiment of the invention, the plurality of LED light sources is thermally decoupled from the plurality of heating elements. The present embodiment is advantageous as LED light sources may be heat sensitive, and the decoupling of the plurality of heating elements from the plurality of LED light sources enables an improved durability of the LED light sources, and consequently, the module. Hence, the present embodiment is advantageous in that the LED light sources are not receiving unnecessary thermal energy, wherein the thermal energy is liable to damage and / or disrupt or diminish the performance of the plurality of LED light sources.

[0031] According to an embodiment of the invention, the at least one heating element of the plurality of heating elements is electronically coupled with at least one LED light source of the plurality of LED light sources. Hence, the element(s) is (are) electronically coupled with one or more LED light sources of the plurality of LED light sources. The present embodiment is advantageous by the convenience of the coupling and / or operation of the heating elements and the LED light sources of the light and heat-generating module.

[0032] According to an embodiment of the invention, the luminaire comprises a controller connected to the light and heat-generating module. The controller is configured to control at least one of the emitted LED light from at least one LED light source of the plurality of LED light sources and the heat generated from at least one heating element of the plurality of heating elements. Hence, the controller is configured to control the emitted LED light from one or more LED light sources of the plurality of LED light sources and / or the heat generated from one or more heating elements of the plurality of heating elements. The control is based on at least one of an input received by the controller, and a predetermined setting. The present embodiment is advantageous as the controller enables, for a user of the luminaire, an improved control of the LED light and / or thermal radiation generated from the luminaire.

[0033] It should be understood that the luminaire of the second aspect of the present invention may have similar and / or identical embodiments and / or advantages as the above- mentioned light and heat-generating module of the first aspect of the present invention.

[0034] Further objectives of, features of, and advantages with, the present invention will become apparent when studying the following detailed disclosure, the drawings and the appended claims. Those skilled in the art will realize that different features of the present invention can be combined to create embodiments other than those described in the following.

[0035] BRIEF DESCRIPTION OF THE DRAWINGS

[0036] This and other aspects of the present invention will now be described in more detail, with reference to the appended drawings showing embodiment(s) of the invention.

[0037] Figs. 1-6 schematically show a light and heat-generating module according to embodiments of the present invention, and

[0038] Figs. 7a-c schematically show an example of a luminaire comprising a light and heat-generating module according to an embodiment of the present invention.

[0039] DETAILED DESCRIPTION

[0040] Fig. 1 schematically shows a light and heat-generating module 100. The light and heat-generating module 100 comprises a stack of a first carrier 110 extending in a first plane, Pi, an arrangement of a plurality of light emitting diode, LED, light sources 120 on a first side 130 of the first carrier 110, wherein the plurality of LED light sources 120 is arranged to emit LED light 135, a second carrier 140 extending in a second plane, P2, and a plurality of heating elements 150 configured to generate thermal radiation 155. The plurality of heating elements 150 is arranged on a first side 160 of the second carrier 140. Neighboring heating elements (of the plurality of heating elements 150) are mutually spaced by a respective space 170. The first side 130 of the first carrier 110 is arranged to face a second side 180 of the second carrier 140, oppositely arranged the first side 160 of the second carrier 140. The arrangement of the plurality of LED light sources 120 is aligned with the spaces 170 between the heating elements so that each LED light source of the plurality of LED light sources 120 is arranged to emit LED light 135 through at least one of the respective space 170 between neighboring heating elements 150.

[0041] Herein, a stack comprises at least two layers, and the at least two layers are arranged (at least substantially) in parallel on top of each other. Herein, a layer is at least one element arranged substantially in a plane as illustrated in Fig. 1 by first and second planes, Pi, P2.

[0042] The first carrier 110 is in Fig. 1 illustrated as a first layer arranged along the first plane, Pi. The size of the first carrier 110 is arbitrary in Fig. 1. Hence, the size is not necessarily to scale in regard to the first carrier’s 110 width and length. For example, in comparison to the plurality of LED light sources 120 or the di stance / spacing between other illustrated layers of the stack of the light and heat-generating module 100. The first carrier 110 may be divided into segments, each segment being a part of the first carrier 110. The plurality of LED light sources 120 may be arranged on one or more segments or portions of the first carrier 110. The first carrier 110 may be a transmissive (i.e., transparent) substrate. That is, the first carrier 110 is the planar body(ies) to which the LED light sources are coupled. In an embodiment, the first carrier 110 may be a printed circuit board (PCB). The second carrier 140 is in Fig. 1 illustrated as a first layer arranged along the second plane, P2. The size of the second carrier 140 is arbitrary in Fig. 1. Hence, the size of the second carrier 140 is not necessarily to scale in regard to, e.g., the size of the heating elements 150 or, e.g., the distance between the second carrier 140 and the first carrier 110. The second carrier 140 may be a transmissive (transparent) substrate (e.g., a carbon foil).

[0043] The number (amount) of LED light sources of the plurality of LED light sources 120 is merely schematically indicated in Fig. l. The plurality of LED light sources 120 may comprise two or more LED light sources. It will be appreciated that the LED light sources 120 may be any kind of LED light source, and that the plurality of LED light sources 120 may be of a same type of LED light source, or that the plurality of LED light sources 120 may be of two or more types of LED light sources. It will further be appreciated that the type of LED light source (of the plurality of LED light sources 120), may for example be based upon the color produced. The plurality of LED light sources 120 may comprise single-color LEDs (e.g. infrared, blue, green ultraviolet), or white LEDs, (e.g., phosphor based conversion, red / green / blue or a mix of both), and / or the type of LED light sources may be a specific kind of LED, e g., Organic LEDs (OLEDS), or Perovskite LEDs (PeLEDs). Thus, a LED light source may either be a single LED, an OLED, a multi-source LED node, a filament or a linear LED array etc. In Fig. 1, the plurality of LED light sources 120 is exemplified as being arranged on the first carrier 110 such that the LED light sources face downwards, but it should be noted that other arrangements of the plurality of LED light sources 120 in relation to the direction of the first carrier 110 are possible. In an example, the plurality of LED light sources 120 is arranged as a linear array of LED light sources. In an example, the plurality of LED light sources 120 is arranged as a matrix of LED light sources.

[0044] The number (amount) of heating elements of the plurality of heating elements 150 is merely schematically indicated in Fig. 1. The number of heating elements 150 may be two or more. It will be appreciated that the thermal radiation 155 emitted by the plurality of heating elements may be above a first threshold, e.g., a power threshold, (e.g., the power emitted is above 400W / m2) a heating element temperature threshold (e.g., the thermal radiation is emitted by a heating element with a temperature above 90°C), a wavelength threshold (e.g., the wavelength of the emitted radiation is above 700 nm), etc. In addition, or according to an alternative, the thermal radiation 155 emitted may be below a second threshold, e.g., a heating element temperature threshold (e.g., thermal radiation is emitted from a heating element with a temperature below 2200°C) and / or a wavelength threshold (e.g., wavelengths of emitted radiation is below 1 mm, or 3 pm). It will be appreciated that the plurality of heating elements 150 is merely schematically illustrated as blocks in Fig. 1. The plurality of heating elements 150 may comprise any type of heating element, e.g., a wire wound element, or an etched foil element.

[0045] In Fig. 1 the respective space 170 between neighboring heating elements 150 is illustrated as being of the same size. It will be appreciated that a light and heat-generating module 100 having the same space between heating elements 150 as illustrated in Fig 1 merely constitutes an embodiment, and that the relative space 170 may be of different sizes and / or shapes for any one or all of the relative spaces 170 between neighboring heating elements 150 according to one or more alternative embodiments.

[0046] The first side 130 of the first carrier 110 is arranged to face a second side 180 of the second carrier 140. Thus, the first side 130 of the first carrier 110 is configured so that the first side 110 with the arrangement of the plurality of LED light sources 120 faces towards the second side 180 of the second carrier 140. That is, the second side 180 of the second carrier 140 is opposite the first side 130 of the first carrier 110. As illustrated in Fig. 1, the arrangement of the plurality of LED light sources 120 is such that the plurality of LED light sources 120 is aligned with the space(s) (respective space 170) between the plurality of heating elements 150. The emitted LED light 135 is thereby enabled to (when in use) pass through the space(s) between the plurality of heating elements 150. Hence, the plurality of LED light sources 120 is thus arranged to emit LED light 135 through at least one of the respective spaces 170 between neighboring heating elements 150.

[0047] Fig. 2 schematically shows an embodiment of a light and heat-generating module 100 of the present invention. Here, the stack of the light and heat-generating module 100 further comprises a reflective layer 210 extending in a third plane, P3. The reflective layer 210 is arranged to face a second side 190 of the first carrier 110. As shown in Fig. 2, the second side 190 of the first carrier 110 is oppositely arranged the first side 130 of the first carrier 110. The reflective layer 210 is a flat layer configured to reflect, in a non-focusing manner, electromagnetic radiation. In other words, the reflective layer 210 is configured to substantially reflect all electromagnetic radiation irradiated there upon. In an embodiment, the reflective layer 210 may reflect electromagnetic radiation of specific wavelengths. The specific wavelengths may be defined by a type of wavelengths, for example, at least one of infrared spectrum, visible light, and ultraviolet light. Alternatively, the specific wavelengths may be defined by a range of wavelengths, for example wavelengths between 103m - 10'8m, or 10'3m - 10'7m. It will be appreciated that the reflective layer 210 may reflect up to 99.999% of the electromagnetic radiation incident (irradiated) thereupon for specific ranges of wavelengths. For example, the reflective layer 210 may comprise glass, metal, etc. For example, the reflective layer 120 may be a dielectric mirror (comprising multiple layers of optical coatings) able to provide a reflectivity of over 99% across the visible light spectrum. For example, the reflective layer 120 may be made of aluminum and / or copper and be able to reflect over 92% of infrared radiation incident there upon.

[0048] Fig. 3 schematically shows an embodiment of a light and heat-generating module 100 of the present invention. Here, the stack of the light and heat-generating module 100 further comprises a cover layer 310 extending in a fourth plane, P4. Herein, a cover layer 310 is a layer arranged to face the first side 160 of the second carrier 140. In an example, the cover layer 310 may be transmissive to infrared light of thermal radiation. Alternatively, the cover layer 310 may be transmissive to emitted LED light 135, e.g., visible light. It will be appreciated that the cover layer 310 may be transmissive (transparent) to both the emitted LED light 135 and the infrared light of the thermal radiation 155. Fig. 3 further illustrates the cover layer 310 comprising a pattern. For example, the emitted LED light and / or thermal radiation may interact with and / or be optically influenced by the pattern of the cover layer 310. The pattern comprises cover layer portions 320 and cover layer openings 330 between the cover layer portions 320. In an example, the cover layer portions 320 may be opaque to infrared light of the thermal radiation. Alternatively, or in addition, the cover layer portions 320 may be opaque to the emitted LED light 135. Illustrated in Fig. 3 is the alignment of the cover layer portions 320 with the plurality of heating elements 150. This is merely an illustrative depiction, and it will be appreciated that an alternative embodiment may be the alignment of the cover layer portions 320 with the plurality of LED light sources 120. Further illustrated in Fig. 3 is the alignment of the cover layer openings 330 with the plurality of LED light sources 120. It should be noted that this also constitutes an illustrative depiction, and that an alternative embodiment may comprise an alignment of the cover layer openings 330 with the plurality of heating elements 150.

[0049] According to the embodiment illustrated in Fig. 3, each LED light source of the plurality of LED light sources 120 is arranged to emit LED light 135 (e.g., visible light) through at least one of the cover layer openings 330. Alternatively, or in addition, each heating element of the plurality of heating elements 150 may be arranged to emit electromagnetic radiation (e.g., infrared light of the thermal radiation 135) through at least one of the cover layer openings 330.

[0050] Fig. 4 schematically shows an embodiment of a light and heat-generating module 100 of the present invention. Here, the stack further comprises an element 410 extending in a fifth plane, P5. The element 410 is arranged to optically influence the emitted LED light 135 and / or the infrared light of the thermal radiation 155. Fig. 4 illustrates several locations for the elements 410. It will be appreciated that the placement of element 410 may be at a single location, or at two or more of the multiple locations illustrated in Fig. 4. As further illustrated in Fig. 4, in a first exemplifying location, the element 410 may be arranged so that the first side 130 of the first carrier 110 faces the element 410, and the second side 180 of the second carrier 140 faces the element 410. In a second exemplifying location, the element 410 may be arranged partially in one (or more) of the respective spaces 170 between neighboring heating elements. In a third exemplifying location illustrated in Fig. 4, the element 410 is arranged across the full space of one of the respective space 170. In a fourth exemplifying location illustrated in Fig. 4, the element 410 is arranged so that the first side 160 of the second carrier 140 faces the element 410. Considering the fourth exemplifying location, illustrated in Fig. 4, there is provided an embodiment with an optional cover 310 according to embodiments herein, wherein the element 410 is arranged so that the first side 160 of the second carrier 140 faces the element 410, and the element 410 is arranged between the cover 310 and the first side 160 of the second carrier 140. At a fifth exemplifying location illustrated in Fig. 4, there is provided an optional cover 310 according to embodiments herein, and the element 410 is arranged so that the first side 160 of the second carrier 140 faces the element 410, and the cover 310 is arranged between the element 410 and the second carrier 140. It will be appreciated that the element 410 at any of the locations illustrated above may be one or more elements. The element(s) 410 may, for example, be an optical element arranged to diffuse the emitted LED light 135, an optical element to collimate the emitted LED light 135, or an optical element arranged to homogenize the energy profile of the emitted LED light (such as a beam homogenizer). Alternatively, the element(s) 410 may be an opaque element arranged to partially (or fully) block the emitted LED light 135 and / or the infrared light of the thermal radiation 155. Herein, the term “partially block” (e.g., in the context of the emitted LED light 135) means blocking some but not all of the emitted electromagnetic radiation / light (i.e., the emitted LED light 135 / emitted infrared light from the thermal radiation 155) from continuing downstream from the plurality of LED light sources 120 / plurality of heating elements 150 upon making contact with the opaque element. It will be appreciated that an opaque element for the emitted LED light 135 may be opaque to a range of the electromagnetic spectrum covered by the emitted LED light 135. An opaque element may be blocking a percentage of the emitted LED light 135, e.g., above 80%, such as above 90%, or above 93%, and still be opaque to the emitted LED light 135. In an example, said opaque element may be used to provide a beam forming means for the emitted LED light 135, i.e., that the opaque element(s) 410 enable(s) a blockage of visible light to make a narrower beam of light as compared to without the opaque element(s) 410.

[0051] Fig. 5 schematically shows an embodiment of a light and heat-generating module 100 of the present invention. Here, the stack of the light and heat-generating module 100 comprises the reflective layer 210, the cover layer 310, and the element(s) 410 as discussed in relation to the embodiments of Fig. 2, Fig. 3, and Fig. 4 respectively.

[0052] Fig. 6 schematically shows an embodiment of a light and heat-generating module 100 of the present invention. The embodiment comprises a plurality of LED light sources 120 arranged on a first side 130 of a first carrier 110, wherein the first carrier extends in a first plane, Pi. The plurality of LED light sources 120 is arranged to emit LED light 135. The embodiment further comprises a plurality of heating elements 150 configured to generate thermal radiation 155, wherein the plurality of heating elements 150 is arranged on a first side 160 of a second carrier 140, whereby the second carrier 140 extends in a second plane, P2. Neighboring heating elements (of the plurality of heating elements 150) are mutually spaced by a respective space 170. The first side 130 of the first carrier 110 is arranged to face a second side 190 of the second carrier 140. The arrangement of the plurality of LED light sources 120 is aligned with the respective space 170 between the heating elements 150. Hence, each LED of the plurality of LED light sources 120 is arranged to emit LED light 135 through a respective space 170 between neighboring heating elements 150, wherein a sub-set of the plurality of LED light sources 120 is arranged to emit LED light 135 through the same respective space 170 between neighboring heating elements 150. One or more of the embodiments of the light and heat-generating module described in relation to Figs. 2-4 may optionally be included in the embodiment of Fig. 6.

[0053] Figs. 7a-c schematically show examples of luminaires 900 comprising a light and heat-generating module 100 according to embodiments of the present invention. The luminaire 900 may be an indoor luminaire, for example a wall panel, ceiling panel, a mounted ceiling lighting arrangement, etc. The luminaire 900 comprises a luminaire housing 910, wherein the luminaire housing 910 is arranged to enclose the light and heat-generating module 100.

[0054] Fig. 7a schematically shows an example of a wall panel luminaire 900 comprising a light and heat-generating module 100 according to one or more embodiments of the present invention. The wall panel luminaire 900 is arranged to be mounted on a flat surface, e.g., a wall, to enable the light and heat-generating module 100 to provide light and heat. The wall panel luminaire may optionally comprise a controller 930 and an actuator 950 as described below.

[0055] Fig. 7b schematically shows an example of a front view of a ceiling panel luminaire comprising a light and heat-generating module 100 according to one or more embodiments of the present invention. The luminaire 900 comprises a luminaire housing 910 arranged to at least partially enclose the light and heat-generating module 100. The ceiling panel luminaire 900 may be configured to be arranged in a ceiling.

[0056] Fig. 7c schematically shows an example of a bottom view of a ceiling panel luminaire comprising a light and heat-generating module 100 according to one or more embodiments of the present invention The luminaire 900 comprises a luminaire housing 910 arranged to at least partially enclose the light and heat generating module 100. The ceiling panel luminaire 900 may be configured to be arranged in a ceiling.

[0057] In an embodiment, the luminaire housing is made out of a substrate / material suitable to be exposed to heat. Further, optional embodiments are illustrated in Fig. 7a-c by dashed lines. In an optional embodiment the luminaire 900 comprises a controller 930. The controller 930 is coupled to the light and heat-generating module 100. The controller 930 may be connected to the light and heat generating module 100 by wires (i.e., wired to the light and heat generating module 100). Alternatively, the controller 930 may be wirelessly connected to the light and heat-generating module 100. In an embodiment, the controller 930 is configured to control the emitted LED light from one or more LED light sources. Alternatively, or in addition to, the controller 930 may be configured to control the heat generated from one or more heating elements. In other words, the controller is arranged to control the heat generated from at least one heating element of the plurality of heating elements. Hence, the controller 930 is configured to control the emitted LED light from the LED light sources and / or the heat generated from the plurality of heating elements. In a further embodiment, the control of the light and heat-generating module by the controller 930 is based upon an input received by the controller 930. Herein, an input may be received using an input port (e.g., input / output port) arranged on the controller 930. The input may be received from a user, e.g., utilizing a wireless signal, (e.g., a user, sending a signal to the controller 930, using another node, e.g., a mobile phone, or a second controller wirelessly coupled to the controller) and / or a node coupled by wire to the controller 930 e.g., a control panel configured to send electrical signals after input from one or more buttons arranged on the control panel), and / or a switch. Alternatively, or in addition to the control of the light and heat-generating module by the controller 930 may be based upon a predetermined setting, e.g., a time, temperature threshold, noise threshold, or a detected motion (using e.g., a motion sensor), wherein the controller 930 would be arranged with a clock / timer, one or more thermometer, an infrared sensor, a microphone, a motion sensor etc.

[0058] According to one or more further optional embodiments illustrated in Fig. 7a- c, the luminaire 900 comprises an actuator 950. The actuator 950 is configured to move the light and heat-generating module 100. The actuator 950 may be substantially any device or element which is able to (mechanically and / or electrically) change the location / direction of the light and heat-generating module 100. The movement of the light and heat generating module 100 is, in an example, a rotational movement, and / or a tilting movement. Hence, in one exemplifying embodiment, the actuator 950 is configured to rotate the light and heatgenerating module 100. Additionally, or alternatively, the actuator 950 is configured to tilt the light and heat generating module 100. In the optional embodiment the actuator 950 is connected to the at light and heat-generating module (physically and / or electrically).

[0059] In an optional embodiment, the plurality of LED light sources 120 generate heat, the heat generated by the LED light sources may be distributed to the plurality of heating elements 150 arranged on the second carrier 140. In an example, the distribution of heat to the heating elements 150 occurs when the heating elements are turned off. This is advantageous as the heating elements act as a heat sink for the plurality of LED light sources 120, and (for example, when a user desires to turn on the heating elements 150) the energy needed to reach an optimal working temperature for the heating elements is reduced. The person skilled in the art realizes that the present invention by no means is limited to the preferred embodiments described above. On the contrary, many modifications and variations are possible within the scope of the appended claims.

Claims

CLAIMS:

1. A light and heat-generating module (100), comprising a stack of a first carrier (110) extending in a first plane, Pi, an arrangement of a plurality of light emitting diode, LED, light sources (120) on a first side (130) of the first carrier, wherein the plurality of LED light sources is arranged to emit LED light (135), a second carrier (140) extending in a second plane, P2, a plurality of heating elements (150) configured to generate thermal radiation (155), wherein the plurality of heating elements is arranged on a first side (160) of the second carrier and wherein neighboring heating elements are mutually spaced by a respective space (170), wherein the first side of the first carrier is arranged to face a second side (180) of the second carrier, oppositely arranged the first side of the second carrier, wherein the arrangement of the plurality of LED light sources is aligned with the spaces between the heating elements so that each LED light source of the plurality of LED light source is arranged to emit LED light through at least one of the respective space between neighboring heating elements, wherein the stack further comprises a non-focusing, reflective layer (210) extending in a third plane, P3, facing a second side (190) of the first carrier oppositely arranged the first side of the first carrier, and being spaced from the second side and from the plurality of LED light sources, carrier,2. The light and heat-generating module according to claim 1, wherein the second carrier is reflective / opaque for the thermal radiation and transmissive for the LED light.

3. The light and heat-generating module according to claim 1 or 2, wherein the stack further comprises a cover layer (310), extending in a fourth plane, P4, wherein the coverlayer is arranged to face the first side of the second carrier, wherein the cover layer is transmissive to at least one of infrared light of the thermal radiation and visible LED light.

4. The light and heat-generating module according to claim 1 or 2, wherein the stack further comprises a cover layer (310) extending in a fourth plane, P4, wherein the cover layer is arranged to face the first side of the second carrier, wherein the cover layer comprises a pattern comprising cover layer portions (320) and openings (330), wherein the cover layer portions are opaque to at least one of infrared light of the thermal radiation and visible LED light, wherein the light and heat-generating module is arranged according to at least one of each LED light source of the plurality of LED light sources is arranged to emitLED light through at least one of the openings, and each heat element of the plurality of heat element is arranged to emit infrared light of the thermal radiation through at least one of the openings.

5. The light and heat-generating module according to any one of the previous claims, wherein the plurality of LED light sources are linear LED arrays arranged to align with the respective space between neighboring heating elements, wherein the respective space between neighboring heating elements extends in the second plane, P2, wherein the respective space is a linear transmissive material.

6. The light and heat-generating module according any one of the previous claims, wherein the stack further comprises at least one element ( 10) extending in a fifth plane, P5, wherein the at least one element is arranged to optically influence at least one of the emitted LED light and infrared light of the thermal radiation.

7. The light and heat-generating module according to claim 6, wherein at least one element of the at least one element is arranged so that the first side of the first carrier faces the at least one element, and the second side of the second carrier faces the at least one element.

8. The light and heat-generating module according to claim 6 or 7, wherein at least one of the at least one element is arranged, at least partially, in at least one of the respective space between neighboring heating elements.

9. The light and heat-generating module according to any one of claims 6-8, wherein at least one of the at least one element is arranged so that the first side of the second carrier faces the at least one element.

10. The light and heat-generating module according to any one of claims 6-9, wherein at least one element of the at least one element is an optical element arranged to, at least one of, diffuse emitted LED light, collimate emitted LED light, and homogenize the emitted LED light.

11. The light and heat-generating module according to any one of claims 6-10, wherein at least one element of the at least one element is an opaque element arranged to at least partially block at least one of the emitted LED light and the infrared light of the thermal radiation.

12. The light and heat-generating module according to any one of the previous claims, wherein the plurality of LED light sources is thermally decoupled from the plurality of heating elements.

13. The light and heat-generating module according to any one of the previous claims, wherein at least one heating element of the plurality of heating elements is electronically coupled with at least one LED light source of the plurality of LED light sources.

14. A luminaire (900), comprising a light and heat-generating module (100) according to any one of the preceding claims, and a luminaire housing (910) arranged to at least partially enclose the light and heat-generating module.

15. The luminaire according to claim 14, comprising a controller (930) connected to the light and heat-generating module, wherein the controller is configured to control at least one ofthe emitted LED light from at least one LED light source of the plurality ofLED light sources, and the heat generated from at least one heating element of the plurality of heating elements, based on at least one of an input received by the controller, and a predetermined setting.

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