Lamp and lighting equipment

Abstract

The utility model relates to a lamp and a lighting device. A lamp (100) has a housing (130) with a translucent or transparent portion (133). The housing surrounds the light emitting device (110) and supports a lens (120) covering a light exit window (131) of the housing (130). The width of the lens is larger than that of the light emitting window. A transmissive (i.e., translucent or transparent) portion (133) of the housing (130) is configured to transmit light to the lens (120).

Description

Technical Field

[0001] This utility model relates to the field of lighting, and particularly to the field of lamps for lamps or lighting equipment. Background Technology

[0002] Artificial light is being used extensively and increasingly to illuminate the environment. One increasingly common form of artificial light is the use of lamps, which contain a light-emitting device, which may include one or more LEDs. Light bulbs are an example of lamps. Utility Model Content

[0003] To ensure consistency and configurability, lamps typically conform to one or more standards, such as GU-10 or GZ-10. This ensures that new luminaires can be installed in existing lighting fixtures or luminaires. One issue with this requirement is the limitation on design flexibility, as any such lamp must meet certain predetermined design requirements. Therefore, there is a desire to provide improved and / or more efficient lamps that can still be adapted to existing luminaires and / or comply with existing lamp standards.

[0004] According to one aspect of the present invention, a lamp is provided, comprising: a light emitting device configured to emit light; a lens configured to receive light emitted by the light emitting device; and a housing housing the light emitting device and supporting the lens. The housing includes: a light exit window through which light emitted by the light emitting device can exit the housing, wherein the lens is positioned to cover the light exit window; an edge defining the light exit window; and a transmissive portion adjacent to the edge, the transmissive portion including a transparent transmissive portion and / or a translucent transmissive portion. The width of the lens is greater than the width of the light exit window. The transmissive portion and the lens are configured and positioned such that at least a portion of the light initially emitted by the light emitting device and incident on the transmissive portion is transmitted to the lens.

[0005] The proposed utility model utilizes the transmissive portion of the housing to increase the effective size of the light exit window. This allows for the use of larger lenses, increasing design and configuration flexibility and thereby improving the optical characteristics of the light output from the lamp, including an efficiency improvement of up to 1%. In particular, the proposed method allows for the use of larger lenses with the lamp (e.g., to improve optical efficiency) without affecting the lamp's ability to comply with existing lamp standards (such as GU-10 or GZ-10 standards).

[0006] In some embodiments, the edge of the housing can be configured to support the lens to cover the light exit window. Therefore, the edge of the housing can serve as a support for the lens. This provides a simple and easy-to-install method for assembling the lens onto the lamp and maximizing the usable size of the lens.

[0007] In some embodiments, the lens may include a snap-fit ​​device configured to couple to the edge of the housing using a snap-fit ​​mechanism. This provides a system that is easy to assemble and maintains a compact lamp size.

[0008] In some embodiments, the transmissive portion of the housing may extend around the entire edge of the housing. This increases the uniformity of light transmitted to the lens via the transmissive portion, and thus increases the consistency of the light output by the lamp.

[0009] In some embodiments, the transmissive portion of the housing may include the edge of the housing. This provides tight optical coupling between the transmissive portion and the lens (mounted to cover the light exit window) to reduce the amount of stray light or light absorption by other components of the lamp.

[0010] In some embodiments, the height of the transmissive portion of the housing from the point furthest from the edge of the light emitting element toward the light emitting device may be not less than 3 mm, for example not less than 4 mm, for example 5 mm.

[0011] In some embodiments, the lens width is greater than twice the sum of the thickness of the housing edge and the width of the light exit window. This provides greater flexibility in lens design and configuration.

[0012] In some embodiments, the transmissive portion of the housing may include a transmissive plastic portion or a transmissive glass portion. For example, the transmissive plastic portion or the transmissive glass portion may be a transparent portion or a translucent portion.

[0013] In some embodiments, the lamp further includes a reflector positioned between the light emitting device and the transmission portion, the reflector being configured to direct light emitted by the light emitting device toward the light exit window and / or the transmission portion of the housing. For example, the reflector may be configured to avoid covering the transmission portion of the housing, allowing light toward the transmission portion to be received and transmitted through.

[0014] In some embodiments, the reflector may include a layer of reflective material coated on the inner sidewall of the housing. This provides a compact and cost-effective method for providing a reflector within the lamp.

[0015] In some embodiments, the housing comprises a single-material housing. This reduces the complexity and cost of manufacturing the housing.

[0016] In some embodiments, the reflective material layer is preferably a mirrored metal coating or a diffuse metal oxide coating. This improves the uniformity of the light output by the lamp by diffusing and / or scattering light within the housing itself.

[0017] In some embodiments, the lamp can be configured as a GU-10 or GZ-10 lamp. This may require appropriate dimensional and / or structural adjustments to the lamp's components (particularly the housing) and the inclusion of suitable electrical connectors to meet the GU-10 or GZ-10 standard.

[0018] In some embodiments, the light emitting device may include one or more LEDs. LEDs provide a highly efficient and direct light emitting element for the lamp.

[0019] A lighting device comprising any of the lamps described herein is also proposed. In particular, the lighting device may include one or more lamps described herein and one or more sockets, each configured to receive the lamp.

[0020] These and other aspects of the present invention will become clear and illustrated with reference to one or more embodiments described below. Attached Figure Description

[0021] To better understand this invention and to more clearly show how it is implemented, reference will now be made to the accompanying drawings by way of example only, in which:

[0022] Figure 1 A cross-sectional view of the lamp is provided;

[0023] Figure 2 A cross-sectional view of the lamp's lens and a portion of its housing is provided;

[0024] Figure 3 A cross-sectional view of the lens is provided;

[0025] Figure 4 A perspective view of the housing and reflector is provided;

[0026] Figure 5 A top view of the lamp is provided; and

[0027] Figure 6 A side view of the lamp is provided. Detailed Implementation

[0028] This utility model will be described with reference to the accompanying drawings.

[0029] It should be understood that while the detailed description and specific examples indicate exemplary embodiments of the apparatus, system, and method, they are for illustrative purposes only and are not intended to limit the scope of the present invention. These and other features, aspects, and advantages of the apparatus, system, and method of the present invention will be better understood through the following description, the appended claims, and the accompanying drawings. It should be understood that the drawings are merely schematic and not drawn to scale. It should also be understood that the same reference numerals are used throughout the drawings to indicate the same or similar parts.

[0030] This disclosure provides a lamp with a housing having a translucent or transparent portion. The housing surrounds a light emitting device and supports a lens that covers a light exit window of the housing. The width of the lens is greater than the width of the light exit window. The transmissive (i.e., translucent or transparent) portion of the housing is configured to transmit light to the lens.

[0031] The proposed method is based on the understanding that if a portion of the housing near the lens, which is used for the lamp, is transparent / semi-transparent, a larger lens can be used for the lamp. This increases the effective size of the light exit window without increasing the size of the housing.

[0032] The embodiments can be used in any lighting device that uses a lamp, but are particularly suitable for downlights and lighting devices that have a restricted or predetermined cavity that can accommodate the lamp.

[0033] Figure 1 A cross-sectional view of a lamp 100, for example, used in a lighting device, is provided. The lamp 100 includes a light emitting device 110, a lens 120, and a housing 130.

[0034] The light emitting device 110 is configured to emit light and may include one or more light emitting elements. Examples of suitable light emitting elements will be clear to those skilled in the art and include light-emitting diodes (LEDs) and halogen bulbs.

[0035] Lens 120 is configured to receive light emitted by light emitting device 110. Lens 120 can control or modify the optical properties of the received light, for example, performing beam shaping, diffusing, and / or filtering of the received light. The lens 120 shown is a Fresnel lens, but other forms of lenses can also be advantageously used. For example, the lens may instead include a planar substrate (e.g., formed of a transparent or diffusing material) that has been coated or etched to create microstructures configured to alter the optical properties of light passing through it.

[0036] The housing 130 is configured to house the light emitting device 110. Therefore, the light emitting device is located inside the housing, for example, within the inner / internal sidewall 139 of the housing.

[0037] The housing 130 is also configured to support the lens 120. For example, the housing may be mechanically coupled to the lens to provide structural support for the lens 120.

[0038] The housing 130 defines a light exit window 131 through which light emitted by the light emitting device 110 can exit the housing. In particular, the light exit window 131 may include a hole or space in the housing (e.g., an air gap in the housing) through which light can exit the housing 130 or escape from the housing 130.

[0039] The housing 130 shown has a tapered shape, with the light exit window 131 positioned at the widest part of the housing (the "top" of the housing). Therefore, the housing 130 tapers gradually from the light exit window to the base or mounting base 150 of the lamp 100. The base or mounting base 150 is configured to connect the lamp to a socket. This structure / shape is well-established in the field of lighting, but is not essential for the proposed inventive concept.

[0040] The light exit window 131 can be elliptical or circular in shape. These shapes have been identified as providing a more uniform light distribution when output by the lamp 100.

[0041] The light exit window 131 is defined by the edge 132 of the housing. Therefore, the shape and size of the edge 132 define the shape and size of the light exit window 131.

[0042] Lens 120 is positioned to cover light exit window 131. Therefore, light passing through light exit window 131 is incident on lens 120. This allows lens 120 to provide relevant or desired optical properties for the light generated by light emitting device 110.

[0043] In some examples, lens 120 extends or partially into housing 130 while still covering light exit window 131. This can provide a more compact lamp 100. In other examples, the lens may be located or resting above housing 130.

[0044] This disclosure proposes the use of a lens 120 that is wider than the light exit window 131 (e.g., in terms of radius and / or diameter). In conventional lamps, if a wider lens is used, the area / region that does not directly cover the light exit window will only receive light from other areas of the lens. Therefore, the effectiveness of the uncovered portion of the lens is affected.

[0045] To at least partially overcome this problem, the proposed method provides a transmissive portion 133 of the housing 130. Therefore, portion 133 of the housing 130 is at least partially transparent. The transmissive portion 133 is formed of a transparent and / or translucent material (i.e., a partially or fully transmissive material). The lens 120 and the transmissive portion 133 are positioned and configured such that at least some of the light incident on the transmissive portion 133 (e.g., from the light emitting device 110) is transmitted to the lens 120.

[0046] Therefore, the proposed method increases the effective size of the light exit window 131 to allow for the use of a larger lens 120 to achieve a greater effect. Specifically, the size of the light exit window 131 is increased by at least the thickness of the transmission portion 133. In particular, the edges or margins of the lens 120 can also be used to control the optical characteristics of the light emitted by the lamp 100. This provides greater flexibility in the control and design of the lens 120 to achieve the desired optical characteristics of the lamp.

[0047] For example, using a larger lens 120 can facilitate a design that can increase the effective luminous flux emitted by the lamp 100. Effective luminous flux is defined as the luminous flux output by the lamp in a region at an angle of ±45° to the lamp's optical axis (e.g., relative to the total luminous flux output by the lamp).

[0048] The transmission portion 133 is positioned near the edge 132 of the housing 130. This properly positions and configures the transmission portion 133 for transmitting light to the lens 120, i.e., by providing a tight optical coupling between the transmission portion 133 and the lens 120.

[0049] In the context of this invention, translucent or transparent materials may alternatively be referred to as transmissive materials (which therefore include any translucent or transparent material). Examples of suitable transmissive materials are known in the art. In some examples, the transmissive material includes transmissive plastics or glass, which are capable of providing the transmittance and structural stiffness required to support the lens 120. In preferred examples, the transmissive material includes transparent plastics or glass.

[0050] The length or height h of the transmissive portion 133 of the housing 130 from the point furthest from the edge 132 of the light emitting element 110 toward the light emitting device. tp It can be no less than 4mm, for example, 5mm. This provides sufficient space for light to pass through from inside the housing to the lens 120 without significantly increasing the amount of light escaping from the lens.

[0051] In some examples, the transmission portion 133 can be configured to direct light toward the lens 120. This can be achieved by appropriately selecting the size and / or shape of the transmission portion. This approach increases the amount of light transmitted to the lens, thereby increasing the effective usable size of the lens.

[0052] The use of the transmission portion 133 effectively or conceptually divides the lens 120 into two parts: the first part receives light via the light exit window 131, and the second part receives light via the transmission portion 133 of the housing 130. Thus, the effective / usable size of the lens 120 is increased through the second part.

[0053] As mentioned earlier, the width w of lens 125 lens Width greater than the light exit window 131 w This relationship is in Figure 2 The text further illustrates that, Figure 2 A cross-sectional view of the lens 120 and a portion of the housing 130 is provided.

[0054] Lens 120 has a width w lens The width w of the lens lens Width greater than the light exit window 131 w.

[0055] When lens 120 is circular or cylindrical, the width w lens It is equal to the diameter of the lens. Similarly, when the light exit window 131 has a circular shape, the width w of the light exit window is equal to the diameter of the lens. w It is the diameter of the light exit window.

[0056] Lens 120 includes a first portion 121 configured to cover a light exit window, i.e., having the same width, size, and / or shape as the light exit window. Specifically, the first portion 121 receives light directly from the light exit window. In some examples, the first portion 121 is configured to fit or insert into the light exit window. Therefore, the width of the first portion can be similar to or the same as the width of the light exit window.

[0057] Lens 120 also includes a second portion 122 that does not cover the light exit window. Therefore, the second portion does not receive light directly via the light exit window (unlike the first portion 121). Instead, the second portion receives light via the transmission portion 133 of the housing 130. It should be understood that the second portion 122 surrounds the first portion 121 and can thus be considered to form the edge of lens 120.

[0058] In a particularly preferred example, as shown in the figure, the width w of the lens lens Thickness t greater than the edge of the shell e Twice the width of the light-emitting window w w The sum. In this way, the width w of the lens. lens Width greater than the edge of the shell e (It can actually be the maximum width of the shell).

[0059] However, this is not always necessary. In some cases, the width of the lens is equal to or less than the width w of the light exit window. w and the thickness t of the edge of the shell e This is twice the sum of its components. Compared to conventional lamps, this still offers the advantage of increasing the effective lens size.

[0060] The effectiveness of the proposed concept has been experimentally tested. In particular, it possesses... Figure 1 Lamps with the structure shown but with different lens widths have been experimentally tested to evaluate the effective luminous flux emitted by the lamp. Effective luminous flux is measured as a percentage (%), representing the percentage of all light emitted by the lamp within a region at ±45° angles to the lamp's optical axis.

[0061] The greater the effective flux, the more useful or beneficial the light emitted by the lamp. Therefore, the greater the effective flux, the higher the optical efficiency of the lamp.

[0062] In the first set of samples, the width of the lens is equal to the width of the light exit window. In the second set of samples, the width of the lens is greater than the width of the light exit window (e.g., having...). Figure 1 (The precise structure is shown). In both sample sets, there are two types of lamps, each with a light-emitting device that outputs light of different color temperatures (measured in Kelvin K). This is used as a control variable.

[0063] Table 1 lists the results of this experiment. As clearly shown, for embodiments where the lens width is greater than the light exit window width, the effective flux increases (up to 1%).

[0064]

[0065] Table 1

[0066] Back Figure 1 Other optional features of lamp 100 will be described below.

[0067] The transmission portion 133 can extend around the entire edge 132 of the housing 130. Therefore, the transmission portion 133 can be along the edge 132 of the housing 130. This increases the amount of light that can be transmitted through the transmission portion to the lens 120 and ensures that this light is uniformly provided to the lens 120 to improve the uniformity of the output light.

[0068] The edge 132 of the housing 130 can be configured to support the lens 120 to cover the light exit window 131. In particular, the lens and the edge can be configured together to couple with each other, thereby mechanically securing the lens to the housing.

[0069] The transmissive portion 133 may include or form an edge 132. Therefore, the edge may be formed of a transmissive (i.e., transparent / translucent) material. This provides a tighter optical coupling between the transmissive portion 133 and the lens 120 (e.g., coupled to the edge), improving the optical coupling of light emitted from the light emitting device into the lens 120.

[0070] In a preferred embodiment, lens 120 includes a snap-fit ​​device 125 configured to couple to the edge of housing using a snap-fit ​​mechanism. The snap-fit ​​device facilitates a compact connection mechanism, increasing ease of assembly. Through the snap-fit ​​device 125, lens 120 geometrically engages with the edge 132 of housing 130 for mechanical coupling thereto.

[0071] Figure 3 A cross-sectional view of lens 120 is provided, which more clearly illustrates the shape of the snap-fit ​​device 125. In particular, the snap-fit ​​device may be formed of an elastic material or structure configured to engage or clamp with an edge (not shown) of the housing.

[0072] Of course, alternative coupling mechanisms can be used instead of snap-fit ​​devices, such as adhesives or screw-based systems.

[0073] Figure 3 It also more clearly illustrates the conceptual separation between the first part 121 and the second part 122 of lens 120.

[0074] Refer again Figure 1 The lamp 100 may also include a reflector 140. The reflector 140 is positioned between the light emitting device 110 and the transmission portion 133. The reflector 140 is configured to guide light emitted by the light emitting device 110 toward the light exit window 131 and / or the transmission portion 133 of the housing 130. Of course, the reflector 140 is not present in the area of ​​the transmission portion 133.

[0075] In the example shown, reflector 140 is a layer or coating of reflective material located on the inner wall 139 of housing 130. Thus, reflector 140 coats the surface of housing 130 facing the interior of housing 130, such as the surface facing the light emitting device 110.

[0076] Reflective materials can include mirror-finish metallic coatings, such as silver, aluminum, nickel, or chromium. In some examples, reflective materials include diffuse metal oxide coatings, such as TiO2, BaSO4, or mica powder.

[0077] However, other embodiments of the reflector 140 will be apparent to those skilled in the art, such as separate or dedicated structures of the housing 130 (e.g., metal / reflective inserts).

[0078] In embodiments including reflector 140, it is preferable that housing 130 is formed from a single material, such as a single transparent / translucent material. Reflector 140 can then be positioned to cover a portion of the inner surface or inner sidewall 139 of housing 130. For example, reflector 140 can be formed by coating the interior of such housing 130 with a reflective coating. In this way, the position / shape of the transmissive portion 133 of housing 130 is defined as the portion of housing not covered or obstructed by reflector 140. This approach helps to simplify lamp manufacturing because the housing can be created in a single manufacturing process.

[0079] Figure 4 The figure shows housing 130 and reflector 140. The figure clearly shows the relative position of reflector 140 within housing 130, particularly covering the inner wall of housing, and shows how reflector 140 does not cover or avoids covering the transmissive portion 133 of housing.

[0080] like Figure 4As shown, reflector 140 can be made or formed from multiple facets. These facets can allow for better light mixing, thereby improving output uniformity.

[0081] Refer again Figure 1 Lamp 100 can be configured as a GU-10 or GZ-10 lamp. Therefore, the base 150 of lamp 100 can include an electrical connector configured to connect to a GU-10 or GZ-10 socket. Thus, the electrical connector can include two appropriately configured pins for connection to the GU-10 or GZ-10 socket. Of course, the shape and / or size of the lamp base 150 can similarly have appropriate dimensions and configurations for connection to a GU-10 or GZ-10 socket.

[0082] GU-10 and GZ-10 are recognized standards in the lighting industry.

[0083] Any lamp described herein may include an additional component 160, which can be configured to power, drive, and / or control the operation of the light emitting device. The additional component 160 has been shown in an abstract form because the precise arrangement and / or configuration of these components is not critical to the proposed method. These components are well known in the art and are not described for the sake of brevity.

[0084] Figure 5 A top view of lamp 100 is provided, which in turn provides a view of lens 120. This figure shows a first portion 121 (covering the light exit window) and a second portion (uncovered light entrance / exit window) of lens 120. As shown, the lens can be configured as a Fresnel lens. As also shown, the sidewalls of lens 120 may include multiple facets, which allow for better light mixing, thereby improving output uniformity.

[0085] Figure 6 A side view of lamp 100 is provided. This view clearly shows how the width of lens 120 is greater than the (maximum) width of housing 130, i.e., greater than the light exit window.

[0086] The figure also illustrates how an electrical connector can be formed in / at the base 150 of the housing 100. The electrical connector can be configured for use with a GU-10 or GZ-10 socket.

[0087] The lamp is configured for use in a lighting device. Therefore, a lighting device comprising any of the lamps described herein is also proposed. This lighting device may include at least one lamp described herein and at least one socket configured to receive the lamp described herein. A luminaire comprising such a lighting device is also proposed.

[0088] By studying the accompanying drawings, the disclosure, and the appended claims, those skilled in the art can understand and implement variations of the disclosed embodiments in practicing the claimed utility model. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite articles "a" or "an" do not exclude a plurality.

[0089] The fact that certain measures are referenced in mutually different dependent claims does not mean that a combination of these measures cannot be advantageous.

[0090] If the term "adapted as" is used in the claims or specification, it should be noted that the term "adapted as" is intended to be equivalent to the term "configured as". If the term "arranged" is used in the claims or specification, it should be noted that the term "arranged" is intended to be equivalent to the term "system", and vice versa.

[0091] No reference numerals in the claims should be construed as limiting the scope.

Claims

1. A lamp (100), characterized in that, The lamp includes: A light emitting device (110) is configured to emit light; Lens (120), configured to receive light emitted by the light emitting device; and A housing (130) for accommodating the light emitting device and supporting the lens, the housing comprising: A light exit window (131) through which light emitted by the light emitting device can exit the housing, wherein the lens is positioned to cover the light exit window; Edge (132) defines the light exit window; and A transmissive portion (133), adjacent to the edge, the transmissive portion comprising a transparent transmissive portion and / or a translucent transmissive portion, The width (w) of the lens lens ) is greater than the width (w) of the light exit window w ), The transmissive portion and the lens are configured and positioned such that at least a portion of the light initially emitted by the light emitting device and incident on the transmissive portion is transmitted to the lens.

2. The lamp according to claim 1, characterized in that, The edge of the housing supports the lens to cover the light exit window.

3. The lamp according to claim 2, characterized in that, The lens includes a snap-fit ​​device (125) configured to couple to the edge of the housing using a snap-fit ​​mechanism.

4. The lamp according to any one of claims 1 to 3, characterized in that, The transmissive portion of the housing extends around the entire edge of the housing.

5. The lamp according to any one of claims 1 to 3, characterized in that, The transmissive portion of the housing includes the edge of the housing.

6. The lamp according to claim 5, characterized in that, The height (h) of the transmissive portion of the housing from the point furthest from the edge of the light-emitting element toward the light-emitting device. tp (Not less than 4mm) 7. The lamp according to any one of claims 1 to 3, characterized in that, The width (w) of the lens lens The thickness of the edge of the housing is greater than the thickness of the edge (t). e Twice the width of the light exit window and the width of the light exit window (w) w ) and.

8. The lamp according to any one of claims 1 to 3, characterized in that, The transmissive portion of the housing includes a transmissive plastic portion or a transmissive glass portion.

9. The lamp according to claim 8, characterized in that, The transmissive plastic portion or the transmissive glass portion is a transparent transmissive portion.

10. The lamp according to any one of claims 1 to 3, characterized in that, The lamp also includes a reflector (140) positioned between the light emitting device and the transmission portion, the reflector being configured to guide the light emitted by the light emitting device toward the light exit window and / or the transmission portion of the housing.

11. The lamp according to claim 10, characterized in that: The housing comprises a single-material housing; and The reflector is a layer of reflective material coated on the inner wall (139) of the housing.

12. The lamp according to claim 11, characterized in that, The reflective material layer is a mirror metal coating or a diffuse metal oxide coating.

13. The lamp according to any one of claims 1 to 3, characterized in that, The lamp is configured as a GU-10 or GZ-10 lamp.

14. The lamp according to any one of claims 1 to 3, characterized in that, The light emitting device (110) includes one or more LEDs.

15. A lighting device, characterized in that, The lighting device includes a lamp according to any one of claims 1 to 14.

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