CN111322528A - Lighting device with improved housing - Google Patents

Lighting device with improved housing Download PDF

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Publication number
CN111322528A
CN111322528A CN201811524641.1A CN201811524641A CN111322528A CN 111322528 A CN111322528 A CN 111322528A CN 201811524641 A CN201811524641 A CN 201811524641A CN 111322528 A CN111322528 A CN 111322528A
Authority
CN
China
Prior art keywords
cover
lighting device
housing
sealing element
housing body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811524641.1A
Other languages
Chinese (zh)
Inventor
刘清明
罗锦辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ledvance GmbH
Original Assignee
Ledvance GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ledvance GmbH filed Critical Ledvance GmbH
Priority to CN201811524641.1A priority Critical patent/CN111322528A/en
Publication of CN111322528A publication Critical patent/CN111322528A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/66—Details of globes or covers forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

A lighting device includes a housing and at least one light source within the housing. The housing includes a housing body and a translucent cover attached to the housing body. The cover comprises at least one optical element integrated in the cover and at least one sealing element fixedly attached to the cover.

Description

Lighting device with improved housing
Technical Field
The present invention relates to a lighting device having an improved housing, and more particularly to a lighting device using solid state light sources such as LEDs.
Background
For some lighting devices (luminaires and luminaires), an enclosure that provides a good seal against environmental influences (e.g. humidity) is required. This is particularly true for outdoor products such as floodlights.
Existing outdoor lighting devices typically use a housing as follows: the housing comprises a housing body and a translucent, in particular transparent, cover. Light emitted by a light source inside the housing can exit the housing through the cover. The cover may also act as an optical element to aid in beam shaping. In order to achieve a seal between the housing body and the cover, the cover is glued to the housing body or a gasket is inserted between the housing body and the cover during assembly.
Both methods require additional steps in the assembly process, thus increasing the complexity and cost of the process.
Disclosure of Invention
In view of the known prior art, it is an object of the present invention to provide a lighting device that overcomes the above-mentioned problems.
This object is achieved by a lighting device according to the independent claim. Preferred embodiments are given by the dependent claims.
The lighting device according to the invention comprises a housing and at least one light source inside the housing. The light source may be one or more solid state light sources, in particular LEDs. A driver for driving the light source may also be included in the housing. The housing comprises a housing body and a translucent, in particular transparent, cover attached to the housing body. By "translucent" is meant that light can pass through the cover, but will scatter in the process, and by "transparent" is meant that light can pass through the cover essentially without scattering.
The cover member includes at least one optical element integrated therein. Preferably, the cover and the optical element are one integral part.
The cap also includes at least one sealing element fixedly attached to the cap. The sealing element is configured to engage the housing body to effect a seal between the housing body and the cover when the cover is mounted to the housing body. Preferably, the seal prevents moisture from entering the housing, which could damage the light source or other components within the housing. Since the sealing element is preferably fixedly attached to the cap over its entire length, the sealing element does not change its position, orientation, alignment, etc. during handling of the cap. Thus, the cover can simply be placed on the housing body in the desired orientation without having to worry about the sealing element.
The cover and the sealing element may be made of different materials. In particular, the material of the sealing element may be softer than the material of the cover. In addition, the materials of the cover and the sealing element may have different optical properties. In particular, the sealing element may be opaque. The material of the housing body may be plastic or metal, preferably die cast aluminum. The material of the cover member may be polycarbonate. The sealing element may be a thermoplastic vulcanizate.
In one embodiment, the sealing element is fixedly attached to the cap by overmolding. In other words, during the manufacture of the cap by the injection molding process, the sealing element is placed into a mold, and then the cap material is injected into the mold, where it engages the sealing element and securely retains the sealing element once it becomes solid. The sealing element may be a gasket. The sealing element can be held in a form-fitting manner or in an interference fit by the cover material or by an adhesive connection to the cover material. The sealing element may comprise one or more fixing elements, such as protrusions, for improving the form-fitting effect.
In one embodiment, the cap and sealing member are made by a double injection molding process. In other words, the cover member without the sealing element may be produced in the first mold by an injection molding process. Thereafter, the sealing element may be added to the cover member in a second mold by an injection molding process. Likewise, the sealing element can be held in a form-fitting manner or in an interference fit by the cover material or by an adhesive connection to the cover material. The sealing element may comprise one or more fixing elements, such as protrusions, for improving the form-fitting effect.
In one embodiment, the cover further comprises locking means for locking the cover to the housing body. The locking device may be fixedly attached to the cover. In particular, the cover and the locking element may be an integral component. Thus, the cover and the locking means can be produced in the same production step, for example by injection moulding.
The cover and housing body may be designed to lock together with a snap-fit (snap-fit) mechanism. In such an embodiment, the locking means comprises a first snap-fit element and the housing body comprises a second snap-fit element. The first snap-fit element is configured to interact with a corresponding second snap-fit element. The first snap-fit element may be a locking tab provided with one or more protrusions (locking hooks) and/or recesses. The second snap-fit elements may be corresponding recesses and/or protrusions on the housing body.
In one embodiment, the cover and the at least one optical element are manufactured together as a unitary component by injection molding. The cover can be produced in this way together with the integrated optical element, in particular when the cover is made of a transparent plastic material.
In an embodiment, the at least one optical element comprises a refractive optical element, in particular a lens. Other refractive optical elements, such as prisms, may also be used. The refractive optical element may be used to shape the shape of the light beam emitted by the light source in operation, for example to increase the area illuminated by the illumination device.
In one embodiment, the lighting device includes a plurality (e.g., 2, 3, 4, 5, or even more (e.g., 10, 20, 30, 40, 50)) of light sources within the housing. This is particularly useful for outdoor floodlights where high luminous intensity is required. The at least one optical element may then comprise one or more optical elements, each optical element shaping the shape of the light beam of the one or more light sources. In one embodiment, the at least one optical element comprises one optical element for each light source. This may allow for optimal beam shaping.
The lighting device according to the invention can be designed as a luminaire or as a luminaire which can be inserted into a luminaire.
The term "luminaire" describes an electrical device for generating artificial light by using an electric lamp. Some luminaires may be attached to a wall or ceiling, while other luminaires may be placed on a surface, for example on a desk or desk. Colloquially, luminaires are commonly referred to as "luminaires". However, the term "luminaire" in the technical sense means a light source that can be mounted in a luminaire.
Drawings
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings:
FIG. 1 is an embodiment of a lighting device according to the present invention;
FIG. 2 is a first embodiment of a cover for a lighting device according to the present invention;
FIG. 3 is a second embodiment of a cover for a lighting device according to the present invention;
FIG. 4 is a cross-sectional side view of the embodiment of FIG. 1; and
fig. 5 is an enlarged portion of fig. 4.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Identical, similar elements or elements with the same effect may be denoted by the same reference numerals in several figures. A repetitive description of these elements may be omitted in order to prevent redundant description.
Fig. 1 shows a schematic view of a lighting device according to the invention. The lighting device is an LED-based luminaire.
The lighting device 1 comprises a housing having a housing body 1 and a transparent cover 2, the transparent cover 2 being attached to the housing body 1. A cavity is provided between the cover member 2 and the housing main body 1, and a plurality of LEDs 3 are arranged in the cavity. In the embodiment of fig. 1, 35 LEDs 3 are shown, but any other number of LEDs may be used. In the embodiment of fig. 1, the LEDs 3 are arranged in a rectangular array, but any other type or arrangement may be used.
The sealing element 4 is arranged between the housing body 1 and the cover 2 along a path close to the outer periphery of the cover 2. The sealing element 4 ensures a watertight seal between the housing body 1 and the cover 2. Thus, the lighting device may be used outdoors without risking damage to the LEDs 3 or any driver components (not shown) within the housing.
The sealing element 4 can be seen in more detail in fig. 2 and 3, which fig. 2 and 3 show two embodiments of a cover 2 for a lighting device according to the invention. In these caps 2, the sealing element 4 is fixedly attached to the caps 2. The cover 2 and the sealing element 4 can be manufactured, for example, by a double injection molding process.
The cover member 2 in fig. 2 and 3 is provided with a plurality of optical elements 5. In these embodiments, the number of optical elements 5 is equal to the number of LEDs 3, such that each optical element 5 corresponds to one LED 3. Thus, the optical elements 5 are arranged in a rectangular array. In other embodiments, fewer optical elements may be used, and each optical element may correspond to multiple LEDs. The cover 2 and the optical element 5 may be manufactured as an integral part. Although fig. 2 and 3 show the optical element 5 in the form of a prism surrounding the main light emission direction of each LED 3, any other suitable form may be used.
The cover member 2 in fig. 2 is also provided with locking hooks 6, each locking hook 6 having a protruding portion 6 a. In fig. 2, ten locking hooks 6 are shown (three on each long side and two on each short side of the cover 2), but any other number of locking hooks may be used. The locking hooks 6 are configured to cooperate with corresponding locking tabs (tab) (not shown) in the housing body 1, the locking tabs comprising recesses for receiving the protruding portions 6a of the locking hooks 6. The cover 2 and the locking hook 6 can be manufactured as one piece.
The cover member 2 in fig. 3 is also provided with locking tabs 7, each locking tab 7 having an opening 7 a. In fig. 3, ten locking tabs 7 are shown (three on each long side and two on each short side of the cover 2), but any other number of locking tabs may be used. The locking tabs 7 are configured to cooperate with corresponding locking hooks 8 in the housing body, said locking hooks 8 comprising projections for entering openings 7a of the locking tabs 7. The cover 2 and the locking tab 7 can be manufactured as an integral part.
Fig. 4 shows a schematic side view in cross section of a lighting device according to the invention using a cover member 2 as shown in fig. 3. As can be seen in fig. 4, the LED 3 is mounted on a substrate 9, such as a printed circuit board, the substrate 9 itself being mounted on an inner wall 10 of the housing body. Therefore, heat generated by the LED 3 during operation can be easily transferred to the housing main body 1. The housing body 1 is provided with cooling ribs 11 to improve heat dissipation.
The housing body 1 further comprises a driver housing portion 12 for accommodating an electronic driver (not shown) for driving the LEDs 3.
The housing body 1 further includes a plurality of locking hooks 8 near the outer periphery thereof. The locking hooks 8 are arranged to cooperate with the locking tabs 7 of the cover 2. When the cover 2 is attached to the housing main body 1, the locking tabs 7 engage the outer surfaces 8a of the locking hooks 8 and are elastically bent from their relaxed positions. Once the locking tabs 7 have been inserted sufficiently deeply into the housing body 1, the locking tabs 7 disengage from the locking hooks 8 and the locking tabs 7 return to their relaxed position while the locking hooks 8 enter the openings 7a of the locking tabs 7.
Also during assembly, the sealing element 4 of the cover enters the recess 13 in the housing body 1. The height of the sealing element 4 is slightly longer than the depth of the recess 13, so that the sealing element 4 is compressed into the recess 13, thereby ensuring a tight seal between the housing body 1 and the cover 2.
In addition, the interaction between the locking tab 7 and the locking hook 8 and the interaction between the sealing element 4 and the groove 13 are illustrated in fig. 5, which shows an enlarged portion of fig. 4. Fig. 5 also schematically depicts the difference between the height of the sealing element 4 and the depth of the groove 13. In fact, the sealing element 4 will be compressed by the upper wall 13a of the groove 13.
Although the present invention has been illustrated and described in detail by the above-described embodiments, the present invention is not limited to these embodiments. Other variations may occur to those skilled in the art without departing from the scope of the appended claims.
In general, "a" or "an" can be understood as meaning singular or plural, especially having the meaning of "at least one", "one or more", etc., unless explicitly excluded, for example, by the term "only one", etc.
Further, unless expressly excluded, numerical values may include both precise values and the usual ranges of tolerance.
Features shown in the embodiments, particularly in different embodiments, may be combined or substituted without departing from the scope of the invention.
List of reference numerals
1 main body of the outer casing
2 cover part
3 LED
4 sealing element
5 optical element
6 locking hook of cover
6a protruding part
7 locking tab of cover
7a opening
8 locking hook of casing main body
8a outer surface
9 base plate
10 inner wall
11 cooling rib
12 driver shell
13 groove
13a upper wall of the groove

Claims (10)

1. A lighting device having a housing and at least one light source within the housing, the housing comprising a housing body and a translucent cover attached to the housing body, the cover comprising at least one optical element integrated in the cover and at least one sealing element fixedly attached to the cover.
2. The lighting device of claim 1, wherein said sealing element is fixedly attached to said cover by overmolding.
3. The lighting device of claim 1, wherein said cover and said sealing element are made by a bi-injection molding process.
4. A lighting device as claimed in any one of the preceding claims, wherein the cover further comprises locking means for locking the cover to the housing body, the locking means being fixedly attached to the cover.
5. The lighting device of claim 4, wherein said locking device comprises a first snap-fit element and said housing body comprises a second snap-fit element, said first snap-fit element being configured to interact with said corresponding second snap-fit element.
6. The lighting device of any one of the preceding claims, wherein the cover and the at least one optical element are made by injection molding.
7. The lighting device according to any one of the preceding claims, wherein the at least one optical element comprises a refractive optical element, in particular a lens.
8. A lighting device according to any one of the preceding claims, wherein there are a plurality of light sources within the housing, the at least one optical element comprising one optical element for each light source.
9. A lighting device according to any one of the preceding claims, wherein said at least one light source comprises at least one LED.
10. A lighting device according to any one of the preceding claims, wherein the lighting device is a luminaire or illuminator.
CN201811524641.1A 2018-12-13 2018-12-13 Lighting device with improved housing Pending CN111322528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811524641.1A CN111322528A (en) 2018-12-13 2018-12-13 Lighting device with improved housing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811524641.1A CN111322528A (en) 2018-12-13 2018-12-13 Lighting device with improved housing

Publications (1)

Publication Number Publication Date
CN111322528A true CN111322528A (en) 2020-06-23

Family

ID=71164722

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811524641.1A Pending CN111322528A (en) 2018-12-13 2018-12-13 Lighting device with improved housing

Country Status (1)

Country Link
CN (1) CN111322528A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1458991A (en) * 2000-09-16 2003-11-26 戴森有限公司 Laundry appliance
CN101253695A (en) * 2005-08-31 2008-08-27 天宝导航有限公司 Housing sealing arrangement
CN201425218Y (en) * 2009-06-05 2010-03-17 东莞市松毅电子有限公司 LED lamp body with improved structure
CN103842210A (en) * 2011-07-29 2014-06-04 法国圣戈班玻璃厂 Illuminated glass panel for a vehicle, and manufacture thereof
CN103874883A (en) * 2011-10-11 2014-06-18 普司科Led股份有限公司 Optical semiconductor lighting device
CN104024730A (en) * 2011-12-29 2014-09-03 普司科Led股份有限公司 Optical semiconductor lighting apparatus
CN108430879A (en) * 2015-11-10 2018-08-21 奥布里斯特瓶塞瑞士股份有限公司 The improvement of closure member for container neck or associated improvement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1458991A (en) * 2000-09-16 2003-11-26 戴森有限公司 Laundry appliance
CN101253695A (en) * 2005-08-31 2008-08-27 天宝导航有限公司 Housing sealing arrangement
CN201425218Y (en) * 2009-06-05 2010-03-17 东莞市松毅电子有限公司 LED lamp body with improved structure
CN103842210A (en) * 2011-07-29 2014-06-04 法国圣戈班玻璃厂 Illuminated glass panel for a vehicle, and manufacture thereof
CN103874883A (en) * 2011-10-11 2014-06-18 普司科Led股份有限公司 Optical semiconductor lighting device
CN104024730A (en) * 2011-12-29 2014-09-03 普司科Led股份有限公司 Optical semiconductor lighting apparatus
CN108430879A (en) * 2015-11-10 2018-08-21 奥布里斯特瓶塞瑞士股份有限公司 The improvement of closure member for container neck or associated improvement

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Application publication date: 20200623