Luminaire with sound deadening panel

Abstract

A luminaire comprising a housing, a light emitting optic attached to the housing, and a cavity between the housing and the light emitting optic. A circular acoustic baffle is attached to the perimeter of the housing and completely surrounds the light emitting optic.

Description

Technical Field

[0001] Embodiments of this technology generally relate to lighting devices, and more particularly to lighting devices with sound-absorbing panels. Background Technology

[0002] A luminaire is a system used to generate, control, and / or distribute illumination light. Luminaires are commonly referred to as luminaires. The lighting industry has transitioned to using light-emitting diodes (LEDs) as the light source in luminaires. Compared to incandescent and fluorescent light sources, LEDs offer considerable potential benefits associated with their energy efficiency, light quality, and compact size. However, applying LEDs to lighting systems presents both challenges and opportunities. In some cases, LED luminaires can provide additional functionality or benefits beyond simply supplying illumination to an area. WO2020 / 058528A1 discloses a luminaire having a housing, light-emitting optics, and a circular sound-absorbing panel in concentric rings attached to the periphery of the housing and completely surrounding the light-emitting optics. Summary of the Invention

[0003] This invention relates to an illuminator. The illuminator according to the invention includes a housing; a light-emitting optical element attached to the housing; a cavity between the housing and the light-emitting optical element; and a circular sound-absorbing plate attached to the periphery of the housing and completely surrounding the light-emitting optical element, wherein the circular sound-absorbing plate includes a plurality of concentric rings arranged in a coplanar plane and having different diameters, wherein these concentric rings are independent components detachably mounted to each other via connecting elements, wherein the outer peripheral edge of a first ring is attached to the inner peripheral edge of a second ring arranged around the first ring. Attached Figure Description

[0004] Now refer to the accompanying drawings, which are not necessarily drawn to scale, and in which:

[0005] Figure 1 A top perspective view of a luminaire according to an exemplary embodiment of the present disclosure is shown;

[0006] Figure 2 Example embodiments according to this disclosure are shown. Figure 1 Bottom perspective view of the illuminator;

[0007] Figure 3 Example embodiments according to this disclosure are shown. Figure 1 A cross-sectional side view of the illuminator;

[0008] Figure 4 Example embodiments according to this disclosure are shown. Figure 1 An enlarged cross-sectional side view of a portion of the illuminator;

[0009] Figure 5 A bottom view of another example of a luminaire according to this disclosure is shown; and

[0010] Figure 6 It shows Figure 5 The illuminator is shown in the cross-sectional side view along line A-A.

[0011] The accompanying drawings illustrate only exemplary embodiments and should therefore not be considered as limiting the scope. Elements and features shown in the drawings are not necessarily to scale; instead, the focus is on clearly illustrating the principles of the exemplary embodiments. Additionally, certain dimensions or placements may be exaggerated to aid in visually conveying these principles. In the drawings, the same reference numerals used in different figures denote similar or corresponding, but not necessarily identical, elements. Detailed Implementation

[0012] In the following paragraphs, exemplary embodiments will be described in more detail with reference to the accompanying drawings. Well-known components, methods, and / or processing techniques are omitted or briefly described in this specification. Furthermore, references to various features(s) of the embodiments do not imply that all embodiments must include all of the mentioned features(s).

[0013] The example embodiments described herein relate to luminaires that can be mounted to or suspended from a mounting structure (e.g., ceiling, wall), and that include sound-absorbing panels for absorbing sound. The sound-absorbing panels described herein have a unique shape to accommodate the shape of the luminaire. It should be understood that the embodiments described herein can also be applied to other types of luminaires having other shapes or configurations.

[0014] Now for reference Figures 1-6 This illustration shows an illuminator 100 according to an exemplary embodiment of the present disclosure. The illuminator 100 includes a housing 105, a light-emitting optics 110, and a sound-absorbing panel 120 attached to the periphery of the housing 105. The housing 105 may include a housing backing 106 and a body 117, which may be engaged along the periphery of the housing by one or more fasteners 118. The body 117 may hold the light-emitting optics 110 in place using washers 112. The housing 105 and the light-emitting optics 110 enclose a cavity 109, which may contain components of the illuminator, such as a power supply, wiring, and a light source. The housing 105 of the exemplary illuminator 100 also includes a flange 116 extending outwardly from the periphery of the illuminator 100. Figures 1-4 In the example shown, the flange is part of the body 117 and extends outward from the body 117. The mounting bracket 107 on the back side of the housing 105 can be used to mount or suspend the luminaire 100 from a ceiling, wall or other supporting structure.

[0015] A unique aspect of the illuminator 100 involves attaching a sound-absorbing panel 120 along the periphery of the housing 105. For example... Figure 4 As shown, the clamping ring 124 of the sound-absorbing panel 120 can be used to attach the sound-absorbing panel 120 to the flange 116 of the illuminator 100. The clamping ring 124 is attached to the back side of the sound-absorbing panel 120 and provides a groove into which the flange 116 can slide. In one example, one or more fasteners 118 can be positioned along the periphery of the illuminator 100 and can pass through the top portion of the clamping ring 124 and can pass through the flange 116 to secure the sound-absorbing panel 120 to the illuminator 100. In an alternative embodiment, the sound-absorbing panel 120 can be attached to the illuminator 100 using other arrangements.

[0016] like Figures 1-6 As shown, the sound-absorbing panel extends horizontally from the periphery of the illuminator 100. In the example illuminator 100, the sound-absorbing panel 100 includes a plurality of rings, such as rings 128, 130, 134, and 136, which are joined to form a circular sound-absorbing panel 120. Optional perforations 126 are distributed among the plurality of rings. Figure 4 As shown, the sound-absorbing panel may include a panel backing 132, to which a plurality of rings are attached. Figure 4 As further shown, each of the plurality of rings may include a base attached to the panel backing 132 and a cover facing downwards from the bottom surface of the sound-absorbing panel 120. These rings may have the same or different widths and heights. Figures 1-6 In the example, these rings have different heights, making the bottom surface of the sound-absorbing panel 120 non-planar. The non-planar feature of the bottom surface of the sound-absorbing panel 120 can improve its sound absorption performance because sound waves tend to reflect more easily from a planar surface. Figures 1-6 In the examples shown, the height of these rings varies between 8 mm, 12 mm, and 16 mm; however, in other embodiments, these rings may have other sizes.

[0017] Sound-absorbing panels can absorb sound, which can be beneficial in large open areas or areas with significant noise. Sound-absorbing panels can be made of one or more of a variety of known effective sound-absorbing materials, such as foam, cork, felt, various polymers (such as polyethylene terephthalate (“PET”), other porous materials, and combinations of the foregoing. Figures 1-6 In one example, the base of each ring is made of PET, and the covering of each ring forming the bottom surface of the sound-absorbing panel 120 is made of felt. In another example, the PET can be softened by a heating process and pressed into a curved shape (such as...). Figures 1-6 (The shape of the ring shown).

[0018] In example illuminator 100, the light source includes an LED 114 mounted to a body 117 and arranged to direct light into a light-emitting optics 110. In alternative embodiments, the light source may be in the form of one or more organic LEDs, fluorescent light sources, halogen light sources, or some other type of light source. Some light sources, such as LED and fluorescent light sources, require stable power, and in these cases, the light source can receive stable power from a power supply. As a non-limiting example, the power supply may include one or more of a driver, ballast, switching power supply, AC-to-DC converter, transformer, or rectifier, which can provide stable power to the light source. The power supply may be located within cavity 109 and may receive AC power via a power cable extending into illuminator 100.

[0019] exist Figure 5 and Figure 6 The example illuminator 100 shown illustrates an example of a modular system of a sound-absorbing panel 120, which includes removable sound-absorbing rings 128, 130, and 134 concentric with respect to a body axis 113. The concentric rings have different diameters and are removably connected to each other via connecting elements 115 (in this example, snap-fit ​​hooks). The connecting elements are located at the outer peripheral edge 129 of the first ring, which is attached to the inner peripheral edge 131 of a second ring arranged around the first ring. In this context, the removable connection is intended to mean that the rings can be repeatedly separated without breakage / damage, for example via snap-fit, tenon, Velcro, banjonet, screws, etc. The inner ring 134 is connected to the periphery 108 of the housing 105 via a backing panel 132 and at the narrow periphery 111 of the light-emitting optics 110 (i.e., the light guide). The light-emitting optics 110 is not substantially covered, either partially or completely, by the sound-absorbing plate 120 on its front and / or rear sides, except at its narrow perimeter 111. One of the rings (i.e., the intermediate ring 130) has a hole 126. The concentric rings 128, 130, and 134 each have corresponding heights H1, H2, and H3, and corresponding widths W1, W2, and W3, and are substantially in the same plane. The height difference of the concentric rings causes the sound-absorbing plate to be uneven on its bottom side (i.e., the side from which light is emitted from the light-emitting optics to the outside), which can be considered as the acoustic element gradually tapering radially outward from the central axis 113. The modular feature of the illuminator with sound-absorbing rings gives the illuminator the advantage that its radial dimensions can be adjusted according to the desired acoustic characteristics of the illuminator and can be adjusted to fit the available installation space of the illuminator.

[0020] In another example, the power source may be located away from the luminaire, such as in a plenum space above the ceiling where the luminaire is suspended. The power source may include a Class 1 connection for receiving power from a power source, such as AC trunk or grid power from the power grid or renewable energy source (e.g., 120 VAC, 230 VAC). The power source may modify the power received from the power source and may include a Class 2 low-voltage connection for coupling to the light source. The Class 2 low-voltage connection may supply low-voltage power (e.g., 20 VDC to 60 VDC) to the light source of the luminaire via a low-voltage cable. In some embodiments, the low-voltage power cable may also be a suspension cable suspending the luminaire from the ceiling or other structure. In other embodiments, the low-voltage power cable may be attached to and extend along the suspension cable (suspending the luminaire from the ceiling or other structure).

[0021] like Figures 1-6 As shown, the light-emitting optics 110 is an edge-illuminating light guide that receives light from an LED light source disposed along a narrow periphery of the light guide. The light guide may include a panel, sheet, plate, or related form, which may be flat or curved and includes two internally reflective principal surfaces. Light can be introduced into the light guide from a first edge, such that the principal surfaces guide the light to a second edge. One or both principal surfaces may have features that provide controlled release of light flowing through the light guide to illuminate an area. Thus, light can propagate in the light guide via internal reflections from the two principal surfaces, from the light source edge toward opposite edges, and illuminating light can escape from the light guide through the principal surfaces. The light source may be located near the first edge of the light guide, such that the light source emits light into the light guide via the first edge. In an alternative embodiment, additional LEDs may be located near one or more other edges of the light guide, thereby guiding light into the light guide from other edges. In yet another alternative embodiment, instead of positioning LEDs near one or more edges of the light guide, certain edges may have reflectors located near one or more edges of the light guide that reflect light leaving the edges of the light guide back into the edges of the light guide. In yet another alternative embodiment, the light guide may have a circular or ring-shaped shape (e.g., Figures 1-6 As shown, it has a continuous edge, with LEDs positioned along a portion of the light guide edge, and reflective material positioned along other portions of the light guide edge. LEDs are examples of light sources that can be used with light guides, including but not limited to discrete LEDs, LED arrays, and on-board chip LEDs. In other embodiments, alternative light sources such as organic LEDs may be used.

[0022] In an alternative embodiment, the light source may be located in the cavity 109 behind the light-emitting optics 110, and the light may pass through the upper wide surface of the light-emitting optics 110 and exit the illuminator 100 through the lower wide surface of the light-emitting optics 110.

[0023] In some example embodiments, the example luminaires described herein are intended to meet certain standards and / or requirements. For example, the National Electrical Code (NEC), the National Electrical Manufacturers Association (NEMA), the International Electrotechnical Commission (IEC), the Federal Communications Commission (FCC), and the Institute of Electrical and Electronics Engineers (IEEE) set standards regarding electrical enclosures (e.g., luminaires), wiring, and electrical connections. As another example, Underwriters Laboratories (UL) sets various standards for luminaires. The use of the example embodiments described herein satisfies (and / or allows the corresponding devices to satisfy) such standards when required.

[0024] Referring generally to the foregoing examples, any luminaire component described herein (e.g., housing assembly, sound-absorbing panel) can be made from a single piece (e.g., by molding, injection molding, die casting, 3D printing, extrusion, stamping, or other prototyping methods). Furthermore, or alternatively, the luminaire (or its components) can be made from multiple parts mechanically coupled to each other. In this case, the multiple parts can be mechanically coupled to each other using one or more of several coupling methods—including, but not limited to, epoxy resin, welding, fastening devices, compression fitting, threaded fitting, and slotted fitting. One or more mechanically coupled parts can be coupled to each other in one or more ways—including, but not limited to, fixedly, hingedly, removably, slidably, and threadedly.

[0025] The fasteners or attachment features described herein (including complementary attachment features) allow one or more components and / or portions of the example illuminator to be directly or indirectly coupled to another part or other component of the illuminator. Attachment features may include, but are not limited to, flanges, snaps, Velcro, clamps, portions of hinges, holes, recessed areas, protrusions, slots, spring clips, tabs, pawls, and mating threads. Components can be coupled to the illuminator by directly using one or more attachment features.

[0026] Alternatively, a portion of the luminaire may be coupled using one or more independent devices that interact with one or more attachment features disposed on the luminaire or a component thereof. Examples of such devices may include, but are not limited to, pins, hinges, fasteners (e.g., bolts, screws, rivets), epoxy resin, glue, adhesive, tape, and springs. One attachment feature described herein may be the same as or different from one or more other attachment features described herein. A complementary attachment feature (sometimes also called a corresponding attachment feature) as described herein may be a coupling feature that is directly or indirectly mechanically coupled to another coupling feature.

[0027] Terms such as “first,” “second,” “top,” “bottom,” “side,” “far side,” “proximal side,” and “inner” are used only to distinguish one component (or a portion of a component or a state of a component) from another component. These terms do not imply preference or a particular orientation, nor do they imply limitation on the embodiments described herein. Numerous specific details are set forth in the following detailed description of exemplary embodiments to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without these specific details. In other instances, well-known features have not been described in detail to avoid unnecessarily complicating the description.

[0028] Although specific embodiments have been described in detail herein, these descriptions are by way of example. The features of the exemplary embodiments described herein are representative, and in alternative embodiments, certain features, elements, and / or steps may be added or omitted. Additionally, those skilled in the art can make modifications to various aspects of the exemplary embodiments described herein without departing from the scope of the following claims, the scope of which is to be interpreted in the broadest sense to cover modifications and equivalent structures.

Claims

1. A lighting device, comprising: case; Light-emitting optical devices attached to the housing; The cavity between the housing and the light-emitting optical device; as well as A circular sound-absorbing panel is attached to the periphery of the housing and completely surrounds the light-emitting optical device. The circular sound-absorbing panel comprises multiple concentric rings arranged in the same plane and having different diameters. The concentric rings are independent components that can be detachably mounted to each other via connecting elements, wherein the outer peripheral edge of the first ring is attached to the inner peripheral edge of the second ring arranged around the first ring.

2. The illuminator of claim 1, wherein the circular sound-absorbing plate is attached to a flange extending from the periphery of the housing.

3. The illuminator of claim 2, wherein the circular sound-absorbing plate includes a clamping ring attached to the flange.

4. The illuminator according to claim 1, 2 or 3, wherein the light-emitting optical device is a light guide for edge illumination.

5. The illuminator according to claim 1, 2 or 3, wherein the light-emitting optical device is a lens, the lens covering the light source disposed in the cavity.

6. The illuminator according to claim 1, 2 or 3, wherein the plurality of rings are joined together using an adhesive.

7. The illuminator according to claim 1, 2 or 3, wherein the plurality of rings includes a first ring having a first height and a second ring having a second height different from the first height.

8. The illuminator according to claim 1, 2 or 3, wherein the plurality of rings includes a first ring having a first width and a second ring having a second width, the second width being different from the first width.

9. The illuminator according to claim 1, 2 or 3, wherein the circular sound-absorbing plate includes a hole.

10. The illuminator according to claim 1, 2 or 3, wherein the circular sound-absorbing plate has a varying thickness.

11. The illuminator according to claim 1, 2 or 3, wherein the circular sound-absorbing plate has a non-planar bottom surface.

12. The luminaire according to claim 1, 2 or 3, wherein the luminaire is suspended from the ceiling or a supporting structure.

13. The illuminator according to claim 1, 2 or 3, wherein the sound-absorbing plate extends in a horizontal plane from the periphery of the housing.

Images