EP2894391B1 - Lamp - Google Patents

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Publication number
EP2894391B1
EP2894391B1 EP13835416.2A EP13835416A EP2894391B1 EP 2894391 B1 EP2894391 B1 EP 2894391B1 EP 13835416 A EP13835416 A EP 13835416A EP 2894391 B1 EP2894391 B1 EP 2894391B1
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EP
European Patent Office
Prior art keywords
lamp
retention
fireproof
unit
adjustment
Prior art date
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Active
Application number
EP13835416.2A
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German (de)
English (en)
French (fr)
Other versions
EP2894391A4 (en
EP2894391A1 (en
Inventor
Liangju Wu
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Individual
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Individual
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Filing date
Publication date
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Publication of EP2894391A1 publication Critical patent/EP2894391A1/en
Publication of EP2894391A4 publication Critical patent/EP2894391A4/en
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Publication of EP2894391B1 publication Critical patent/EP2894391B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/12—Flameproof or explosion-proof arrangements
    • F21V25/125—Flameproof or explosion-proof arrangements using intumescent material, i.e. using materials which swells up as a result of heat exposure
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • F21V21/04—Recessed bases
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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]

Definitions

  • the present invention relates to a lamp according to claim 1 and claim 9, and more particular to a lamp suitable to be mounted on a lamp attachment such as a ceiling, which has a fireproof unit used for reducing the spread speed of a fire when a fire disaster caused by the lamp occurs.
  • a Ceiling lamp which is a kind of common lighting lamp in our daily lives.
  • the ceiling lamp can be classified into an adjustable ceiling lamp with adjustable lighting angles or a fixed ceiling lamp with a fixed lighting angle based on whether the lighting direction of the light beams thereof can be adjusted or not. Due to the fact that the lighting angle of a fixed ceiling lamp is fixed once the fixed ceiling lamp is installed, so that it is very inconvenient for a user to adjust the lighting angle when necessary.
  • a current adjustable ceiling lamp can realize multi-angle indoor illumination. When a user adjusts the lighting angles, the user can adjust the lighting angle of the lamp manually or automatically based on predetermined parameters, so as to realize the multi-angle illumination.
  • Prior art lamps are known from US2010/0315812A1 , CN202281145U and CN102162586A .
  • a conventional adjustable ceiling lamp usually includes a light emitting element to provide a lighting source; an adjustment element for a user to adjust the lighting angles of the lamp; a fixing unit for installing the lamp on a ceiling for illumination; a connecting element for connecting the fixing unit with the adjusting element; and a heat dissipating element for preventing an excessive accumulation of the heat during the operation of the light emitting element, and for reducing the temperature of the light emitting element.
  • Components of this kind of lamp are usually made of plastic, aluminium metal or aluminium alloy, et al.
  • This kind of lamp which is made of the above mentioned material is rust free, and has a light quality and a beautiful appearance. But this kind of ceiling lamp has a lot of disadvantages.
  • a ceiling lamp is mounted at a ceiling in an embedded manner in consideration of the aesthetic appearance, so that the lamp gives a considerable adverse effect to the entire fireproof ability of the fireproof ceiling.
  • components of the lamp are made of material which can only bear temperature not higher than 600°C, such as plastic, aluminium metal and aluminium alloy, once a fire disaster occurs and the temperature amounts to be higher than 600°C, the components of the lamp will melt.
  • a Flame below the ceiling will spread to the position above the ceiling through the cracks formed by the melting of the lamp.
  • a flame above the ceiling will spread to the position below the ceiling. Either of the two conditions will induce the fast spreading of the fire disaster and cause a heavy loss.
  • the invention is advantageous in that it provides a lamp suitable to be mounted at a ceiling, wherein the lamp has a good fireproof performance which will prevent the lamp from interfering the entire fireproof performance of the ceiling when the lamp was embedded into the ceiling.
  • Another advantage of the invention is to provide a lamp suitable to be mounted at a ceiling, wherein the lamp comprises a fireproof unit for prevent the fire caused by the fire disaster quickly spreading from a bottom of the ceiling to a top of the ceiling.
  • Another advantage of the invention is to provide a lamp suitable to be mounted at a ceiling, wherein the fireproof unit comprises a first fireproof element which is provided between a second retention element of a retention unit of the lamp and an adjustment element.
  • the first fireproof element swells after it is heated, and then it helps to seal the gap between the retention unit and the adjustment element to prevent the fire caused by the fire disaster quickly spreading from the bottom of the ceiling to the top of the ceiling through the gap between the retention unit and the adjustment element.
  • Another advantage of the invention is to provide a lamp suitable to be mounted at a ceiling, wherein a connecting element of the lamp, which is used to connect the adjustment element and the retention unit, is made of high temperature resistant material which will help the connecting element to resistant high temperature caused by the fire disaster, and to prevent the lamp from breaking up and falling off from the ceiling in the high temperature environment caused by the fire disaster, and then prevent the fire caused by the fire disaster from spreading to other articles in the room quickly.
  • Another advantage of the invention is to provide a lamp suitable to be mounted at a ceiling, wherein the lamp further provides a heat resistant unit, wherein the heat resistant unit comprises a first heat resistant element and a second heat resistant element extending from a back of a light emitting element to the first heat resistant element along an inner wall of the heat dissipation element.
  • the heat resistant unit is provided to prevent the heat dissipation element of the lamp and the retention unit of the lamp from being easily burn out in the fire disaster.
  • Another advantage of the invention is to provide a lamp suitable to be mounted at a ceiling, wherein a safe chamber is formed by the first heat resistant element and the second heat resistant element of the heat resistant unit to prevent the fire caused by the fire disaster from burning the heat dissipation element to melt quickly and prevent the fire from spreading to the ceiling.
  • the present invention further comprises a heat resistant unit, wherein the heat resistant unit comprises a first heat resistant element provided between the adjustment element and the heat dissipation element, wherein the first heat resistant element is received at the third receiving chamber formed by the adjustment element.
  • the present invention further comprises a lens which is provided at the adjustment unit and is shaped to match with a shape of the light exit of the adjustment element, wherein light beams emitted by the light emitting element provided at an upper position of the inner wall of the first receiving chamber can pass through the lens, wherein a user can adjust lighting angle of the light being emitted by the light emitting elements passing through the lens by pivotally moving the adjustment element provided at the second receiving chamber of the retention element of the lamp.
  • a security chamber is defined by the first heat resistant element and the second resistant element of the heat resistant unit of the lamp according to the present invention, wherein the security chamber is provided to reduce the spreading speed of the fire caused by the fire disaster spreading to the position above the lamp.
  • the lamp comprises a retention unit 10 which is suitable to be fixed to a lamp attachment such as a ceiling, an adjustment element 20 used for adjusting the direction of light beams emitted by a light emitting element 60, and a heat dissipation element 30 for dissipating heat.
  • the retention unit 10 of the lamp forms a first containing chamber 100 running from a top to a bottom.
  • the retention unit 10 is suitable to be mounted to a lamp attachment, such as a ceiling, to fix the lamp at a proper position.
  • the retention unit 10 of the lamp is made of high-temperature-resistant material, which keeps its shape in a longer period of time even in a high-temperature environment, so as to prevent the lamp according to the present invention from falling off a lamp attachment, such as a ceiling, in the high-temperature environment, due to the melting of the retention unit 10.
  • the adjustment element 20 is pivotally contained at the first containing chamber 100 formed by the retention unit 10, wherein the adjustment element 20 comprises an adjustment body 21 which is pivotally contained at the first containing chamber 100 formed by the retention unit 10.
  • the adjustment body 21 forms a light passage 211 suitable to allow the light beams emitted by the light emitting element 60 to pass therethrough.
  • the adjustment element 20 further comprises a lower end portion 22 provided at a bottom of the adjustment body 21, wherein the adjustment body 21 together with the lower end portion 22 forms a second containing chamber 200 with an upper opening.
  • the lower end portion 22 forms a light outlet 221 communicating with the light passage 211, wherein the light outlet 221 allows the light beams emitted by the light emitting element 60 to pass therethrough.
  • the heat dissipation element 30 comprises a heat dissipation portion 31 and a mounting portion 32 extending from the heat dissipation portion 31.
  • the light emitting element 60 is provided at the bottom of the mounting portion 32 of the heat-dissipation element 30 while the bottom of the mounting portion 32 of the heat-dissipation element 30 is suitable to be contained at the second receiving chamber 200 formed by the adjustment element 20 to couple the bottom of the heat-dissipation element 30 and the adjustment element 20.
  • the mounting portion 32 is extended downwardly from the heat dissipating portion 31 and forms a third receiving chamber 300 which has a lower opening.
  • the heat dissipation portion 31 of the heat dissipation element 30 provides a wire passage 33.
  • a power wire passes through the wire passage 33 and electrically connects with the light emitting element 60 provided at a top position of an inner wall of the third receiving chamber 300 to supply electrical power for the light emitting element 60.
  • the heat dissipation portion 31 of the heat dissipation element 30 comprises a dissipation body 311 and a offset of sheet-shaped heat dissipation members 312 provided at the dissipation body 311.
  • the sheet heat dissipation members 312 are provided to improve the heat dissipating performance of the heat dissipation element 30.
  • the mounting portion 32 of the heat dissipation element 30 and the adjustment element 20 are integrated with each other to form a one-piece structure, so that when a user adjusts the position of the adjustment element 20 of the lamp to direct the light beams passing through the light passage 211 of the adjustment element 20 to project with a desired angle, the heat dissipation element 30 will pivotally rotate along with the pivotal rotation of the adjusting element 30, so as to reduce operation procedures.
  • the mounting portion 32 of the heat dissipation element 30 is integrally connected with the adjustment body 21 of the adjustment element 20.
  • the mounting portion 32 of the heat dissipation element 30 can also be integrally connected with the lower end portion 22 of the adjustment element 20 or can be integrally connected with both of the adjustment body 21 of the adjustment element 20 and the lower end portion 22 of the adjustment element 20, so that when a user adjusts the position of the adjustment element 20 of the lamp to direct the light beams passing through the light passage 211 of the adjustment element 20 to project with a desired angle, the heat dissipation element 30 will pivotally rotate along with the pivotal rotation of the adjusting element 30, so as to reduce operation procedures.
  • the position of the heat dissipation portion 31 of the heat dissipation element 30 may be higher than the position of a top end of a second retention element 12 of the retention unit 10 of the lamp to help the heat dissipation element 30 to dissipate heat. Furthermore, the position of the mounting portion 32 of the heat dissipation element 30 may be higher than the position of a top end of a second retention element 12 of the retention unit 10 of the lamp to help the heat dissipation element 30 to dissipate heat.
  • the lamp according to the preferred embodiment further comprises a heat resistant unit 40, wherein the heat resistant unit 40 comprises a first heat resistant element 41 received at the second receiving chamber 200 formed by the adjustment element 20.
  • the first heat resistant element 41 which is provided between the adjustment element 20 and the mounting portion 32of the heat dissipation element 30, is made of high-temperature resistant material to prevent it from melting and to keep its shape in a relatively long period of time in a high-temperature environment and to further reduce the speed of melting of the components of the lamp and to prevent the lamp from breaking up.
  • the first heat resistant element 41 comprises a first heat resistant portion 411 and a second heat resistant portion 412 extended inwardly from a lower end of the first heat resistant portion 411, wherein the first heat resistant portion 411 is provided between an outer side of the mounting portion 32 of the heat dissipation element 30 and an inner side of the adjustment body 21 of the adjustment element 20.
  • the second heat resistant portion 412 is provided below the mounting portion 32 of the heat dissipation element 30.
  • the second heat resistant portion 412 of the first heat resistant element 41 is provided between the mounting portion 32 of the heat dissipation element 30 and the lower end portion 22 of the adjustment element 20 to prevent the fire caused by a fire disaster passing through the gap between the adjustment element 20 and the heat dissipation element 30 to spread to the position above the lamp.
  • the outer shape of the first heat resistant element 41 can be the same as the outer shape of the adjustment element 20 of the lamp and the first heat resistant element 41 is provided inside the adjustment element 20, wherein the second heat resistant portion 412 of the first heat resistant element 41 has a light exit 410 overlapping with the light outlet 221 of the adjustment element 20 to make the light beams emitted by the light emitting element 60 provided at the lamp pass through the light exit 410 and the light outlet 221 of the adjustment element 20 , so as to reach the external of the lamp.
  • the first heat resistant element 41 is shaped to match with the second receiving chamber 200 formed by the adjustment element 20, so that the first heat resistant element 41 is suitable to be received in the second receiving chamber 200 formed by the adjustment element 20, and the outer side of the first heat resistant element 41 is close to the inner side of the adjustment element 20.
  • the light exit 410 defined by the second heat resistant portion 412 of the first heat resistant element 41 allows the light beams emitted by the light emitting element 60 to pass therethrough to reach the light outlet 221 of the adjustment element 20.
  • the heat resistant unit 40 of the lamp further comprises a second heat resistant element 42 provided at the third receiving chamber 300 formed by the heat dissipation element 30.
  • the second heat resistant element 42 is made of high-temperature resistant material.
  • the second heat resistant element 42 is extended downwardly from a rear side of the light emitting element 60 which is provided at the inner wall around the third receiving chamber 300 to the first heat resistant element 41 of the heat resistant unit 40 along the inner wall around the third receiving chamber 300 light emitting , so that the first heat resistant element 41 of the heat resistant unit 40 and the second heat resistant element 42 of the heat resistant unit 40 define a safe chamber 400 to reduce the spreading speed of the fire caused by the fire disaster in the third receiving chamber 300.
  • a vertical length of the security chamber 400 is greater than a transverse width of the security chamber 400, so the journey of the fire caused by the fire disaster in the security chamber 400 is lengthened and the time for the fire reaching the top of the security chamber 400 is lengthened, so that the spreading speed of the fire caused by the fire disaster in the third receiving chamber 300 is reduced.
  • the lamp according to the preferred embodiment of the present invention further comprises a lens 50 provided at the lower end portion 22 of the adjustment element 20 of the lamp.
  • the size of the lens 50 is not smaller than the size of the light outlet 221 of the adjustment element 20, so the lens 50 completely seals the light outlet 221, and thus the security chamber 400 defined by the first heat resistant element 41 of the heat resistant unit 40 and the second heat resistant element 42 of the heat resistant unit 40 is sealed by the lens 50 to prevent the fire caused by the fire disaster spreading to the above of the lamp.
  • the first heat resistant element 41 of the heat resistant unit 40 and the second heat resistant element 42 of the heat resistant unit 40 are both made of high-temperature resistant material, and they can keep their shapes in a relative long period of time, so that the heat resistant unit 40 forms a heat resistant mechanism which reduces the speed of the fire caused by the fire disaster spreading to the position above the lamp. Hence, the speed of the fire caused by the fire disaster spreading to the position above the lamp is reduced.
  • the retention unit 10 of the lamp comprises a first retention element 11 and a second retention element 12 provided at an outer side of the first retention element 11.
  • the second retention element 12 is suitable to be mounted to a lamp attachment, such as a ceiling.
  • the first retention element 11 forms a first receiving chamber 100which is used to pivotally receive the adjustment element 20, so that the adjustment element 20 is pivotally provided at the first receiving chamber 100.
  • the lamp according to the preferred embodiment of the present invention comprises the light emitting element 60 which is provided at a top position of the inner wall around the third receiving chamber 300 formed by the heat dissipation element 30 of the lamp.
  • the light beams emitted by the light emitting element 60 are suitable to project out through the light outlet 221 of the adjustment element 20.
  • the light emitting element 60 is an LED lighting member.
  • the lamp according to the preferred embodiment of the present invention further comprises a fireproof unit 70 which comprises a first fireproof element 71 provided between the retention unit 10 and the adjustment element 20.
  • a fireproof unit 70 which comprises a first fireproof element 71 provided between the retention unit 10 and the adjustment element 20.
  • An outer side of the first fireproof element 71 provided between the retention unit 10 and the adjustment element 20 is shaped and designed to match with a shape of an inner side of the retention unit 10 and an inner side of the fireproof unit 70 of the fireproof unit 70 is shaped and designed to match with a shape of an outer side of the adjustment body 21 of the adjustment element 20, so that the first fireproof element 71 of the fireproof unit 70 is suitable to be provided between the retention unit 10 and the adjustment element 20.
  • the first fireproof element 71 when the first fireproof element 71 is heated to swell in a high-temperature environment, the first fireproof element 71 seals a gap between the retention unit 10 and the adjustment element 20 to prevent the fire caused by the fire disaster quickly spreading to the position above the lamp through the gap between the retention unit 10 and the adjustment element 20. Furthermore, a position of the top of the second retention element 12 of the retention unit 10 of the lamp may be higher than a position of the top of the first retention element 11.
  • the first fireproof element 71 of the fireproof unit 70 is provided between the second retention element 12 of the retention unit 10 and the adjustment element 20.
  • the first fireproof element 71 is made of heat-swellable material, which swells in a high temperature environment to form a sealing which seals the gap between the retention unit 10 and the adjustment element 20. Therefore, the first fireproof element 71 prevents the fire caused by the fire disaster from spreading quickly to the outside of the lamp through the gap between the retention unit 10 and the adjustment element 20.
  • the first fireproof element 71 of the fireproof unit 70 is provided at the outer side of the adjustment element 20 of the lamp, and the first fireproof element 71 does not contact with the adjustment element 20 of the lamp to interfere the pivotal movement of the adjustment element 30.
  • the first fireproof element 71 of the fireproof unit 70 is extended downwardly from the top of the first retention element 11 of the retention unit 10 in a direction facing towards the adjustment element 20 of the lamp, so that when the adjustment element 20 pivotally moves, the first fireproof element 71 does not contact with the adjustment element 20 of the lamp. Hence, the first fireproof element 71 of the fireproof unit 70 does not block the pivotal movement of the adjustment element 20.
  • the outer side of the first fireproof element 71 provided between the second retention element 12 of the retention unit 10 and the adjustment element 20 is shaped to match with the shape of the inner side of the second retention element 12 and the inner side of the first fireproof element 71 of the fireproof unit 70 is shaped to match with the shape the outer side of the adjustment body 21 of the adjustment element 20, so that the first fireproof element 71 of the fireproof unit 70 is suitable to be provide between the second retention element 12 of the retention unit 10 and the adjustment element 20.
  • the first fireproof element 71 seals the gap between the retention unit 10 and the adjustment element 20 and further prevents the fire caused by the fire disaster from spreading quickly to the position above the lamp through the gap between the retention unit 10 and the adjustment element 20.
  • the first fireproof element 71 of the fireproof unit 70 extends outwardly and upwardly from the outer side of the top of the first retention element 11 of the retention unit 10 to the inner side of the second retention element 12 of the retention unit 10, so that it is provided at the inner side of the second retention element 12 of the retention unit 10, and thus the first fireproof element 71 of the fireproof unit 70 does not interfere the pivotal movement of the adjustment element 20.
  • the fireproof unit 70 of the lamp according to the preferred embodiment of the present invention further may comprise a second fireproof element (not illustrated in the drawings) provided between the first retention element 11 of the retention unit 10 and the second retention element 12 of the retention unit 10.
  • the second fireproof element is made of heat-swellable material, which swells in a high temperature environment to seal the gap between the first retention element 11 of the retention unit 10 and the second retention element 12 of the retention unit 10.
  • the second fireproof element is provided between the first retention element 11 of the retention unit 10 and the second retention element 12 of the retention unit 10.
  • the second fireproof element swells in the high-temperature environment caused by the fire disaster and forms a sealing between the first retention element 11 of the retention unit 10 and the second retention element 12 of the retention unit 10 to prevent the fire caused by the fire disaster from spreading to the outside of the lamp through the gap between the first retention element 11 of the retention unit 10 and the second retention element 12 of the retention unit 10.
  • the retention unit 10 of the lamp especially the second retention element 12 of the retention unit 10 is made of high-temperature resistant material to avoid being melted and to keep its shape in the high-temperature environment caused by the fire disaster, so the speed of the fire spreading to the surrounding of the lamp is reduced.
  • the retention unit 10 of the lamp is made of high-temperature resistant material
  • the retention unit 10 of the lamp, the first heat resistant element 41 of the heat resistant unit 40, the second heat resistant element 42 of the heat resistant unit 40, and the first fireproof element 71 of the fireproof unit 70 provided between the retention unit 10 of the lamp and the adjustment element 20 of the lamp together give the lamp an entire good fireproof ability.
  • the lamp when the lamp is embedded into a fireproof ceiling, the lamp does not damage the entire fireproof ability of the fireproof ceiling.
  • the heat-swellable material refers to material which swells after being heated, and more particularly referring to high-temperature resistant material or fireproof material with a coefficient of thermal expansion greater than 4.0, wherein the coefficient of thermal expansion is understood by one skilled in the art. More preferably, the fireproof material with a coefficient of thermal expansion greater than 20.0 is selected.
  • the heat-swellable material can consist of a single material which swells after being heated.
  • the heat-swellable material can also contain various material comprising of a plurality of materials which swells after being heated.
  • the high-swellable material can even be a heat-swellable composite comprising of heat-sellable substances which are attached to a carrier, such as a heat-swellable composite formed by attaching graphite to a carrier.
  • a carrier such as a heat-swellable composite formed by attaching graphite to a carrier.
  • the carrier can be cloth, fiber, ceramic, or some other fireproof carriers like that.
  • the lamp according to the preferred embodiment of the present invention further comprises a set of connecting elements 80 each of which is made of high-temperature resistant material.
  • the connecting element 80 comprises a connector 81 which couples the retention unit 10 with the adjustment element 20 of the lamp.
  • the connector 81 is made of high-temperature resistant material and the connector 81 couples the retention unit 10 with the adjustment element 20 of the lamp.
  • the connector 81 extends from the outer side of the retention unit 10 to the inner side of the adjustment element 20, and pivotally retains the adjusting element 20 of the lamp at the first receiving chamber 100 form by the retention unit 10.
  • the lamp according to the preferred embodiment of the present invention preferably comprises two symmetrical connectors 81 which pivotally retain the adjusting element 20 of the lamp at the first receiving chamber 100 form by the retention unit 10.
  • the connectors 81 which are made of high-temperature resistant material, extend from the outer side of the retention unit 10 to the inner side of the adjustment element 20 to couple the retention unit 10 with the adjustment element 20 of the lamp.
  • the connectors 81 extend from the outside of the retention unit 10 to the heat dissipation element 30 of the lamp and further couple the retention unit 10, the adjustment element 20, and the heat dissipation element 30 together.
  • the connectors 81 of the connecting element 80 pass through the retention unit 10 and the adjustment element 20 and extend to the heat dissipation element 30 while extending along a horizontal direction.
  • the first fireproof element 71 and the second fireproof element of the fireproof unit 70 are provided above the connectors 81.
  • the first fireproof element 71 of the fireproof unit 70 does not fall off from the position between the retention unit 10 and the adjustment element 20 because of the quick melting of the first retention element 11 and the second retention element 12 of the retention unit 10 of the lamp.
  • the first fireproof element 71 of the fireproof unit 70 can be heated to swell in the high-temperature environment and effectively seas the gap between the retention unit 10 and the adjustment element 20 to prevent the fire caused by the fire disaster passing through the gap between the retention unit 10 and the adjustment element 20 to spread to the outside of the lamp.
  • the connector 81 which is made of high-temperature resistant material, will keep its shape for a relative long period of time to reduce the speed of breaking up of the lamp and further reduce the speed of the fire caused by the fire disaster spreading to the outside of the lamp.
  • the position of the first fireproof element 71 of the fireproof unit 70 can be higher than the position of the connectors 81.
  • the first fireproof element 71 is heated to swell in the high-temperature environment, so the first fireproof element 71 seals the gap between the retention unit 10 and the adjustment element 20 and forms a seal between the retention unit 10 and the adjustment element 20 to avoid the fire spreading quickly to the position above the lamp.
  • the connector 81 which is made of high-temperature resistant material, and the first fireproof element 71 of the fireproof unit 70 which is provide between the retention unit 10 and the adjustment element 20 at a position higher than the connector 81, reduce the speed of the breaking up of the lamp in the high temperature environment and further reduce the speed of the fire caused by the fire disaster spreading to the position above the lamp.
  • the inner wall of the first retention element 11 of the retention unit 10 of the lamp provides two symmetry retaining openings 111.
  • the adjustment body 21 of the adjustment element 20 provides two corresponding symmetrical pivot shafts 24 each is suitable to be pivotally secured at the corresponding retaining openings 111 of the first retention element 11.
  • a user can pivotally adjust the position of the adjustment element 20 and further adjust the emitting angle of the light beams emitted by the light emitting element 60 which is supported by the lamp.
  • the second retention element 12 of the retention unit 10 of the lamp comprises a second retention body 121 and has an upper edge 122 extending inwardly from the top of the second retention body 121 to the inner wall of the first retention element 11, so that the first fireproof element 71 provided between the first retention element 11 and the second retention element 12 is sealed between the first retention element 11 and the second retention element 12 by the upper edge 122 of the second retention element 12.
  • the upper edge 122 of the second retention element 12 can extend inwardly from the top of the second retention body 121 to the top of the first fireproof element 71 of the fireproof unit 70, which is provided between the first retention element 11 and the adjustment element 20.
  • the upper edge 122 of the second retention element 12 of the retention unit 10 is suitable to make the heat-swelled first fireproof element 71 extend downwardly.
  • the gap between the first retention element 11 and the adjustment element 20 is sealed to prevent the fire caused by the fire disaster spreading to the outside of the lamp through the gap between the first retention element 11 and the adjustment element 20.
  • the upper edge 122 of the second retention element 12 further provides a co-sealing function, in the high-temperature environment, the upper edge 122 can cooperate with the first fireproof element 71 of the fireproof unit 70 to seal the gap between the first retention element 11 of the retention unit 10 and the adjustment element 20 to prevent the fire caused by the fire disaster spreading to the outside of the lamp through the gap between the first retention element 11 and the adjustment element 20.
  • the upper edge 122 of the second retention element 12 cooperates with the first fireproof element 71 of the fireproof unit 70 to seal the gap between the first retention element 11 and the adjustment element 20 and further prevent the fire caused by the fire disaster spreading to the outside of the lamp through the gap between the first retention element 11 and the adjustment element 20.
  • the lamp according to the preferred embodiment of the present invention further comprises a set of location elements 90 provided at the inner wall of the first retention element 11 of the retention unit 10 and extending upwardly from the inner wall of the first retention element 11, which is used to locate the first fireproof element 71 of the fireproof unit 70 to a proper position between the second retention element 12 of the retention unit 10 and the adjustment element 20.
  • the first fireproof element 71 of the fireproof unit 70 does not interfere the pivotal movement of the adjustment element 20 of the lamp.
  • the high-temperature in the present invention refers to a temperature greater than 1000°C preferably.
  • the high-temperature resistant material refers to a material which can bear a temperature not lower than 1000°C, including high-temperature metallic materials and high-temperature non-metallic materials.
  • the high-temperature metallic materials are metallic material having a melting point greater than 1000°C, such as Fe, Cu, Au, and Mn. More preferably, the high-temperature metallic materials is refractory metal, such as W, Mo, Ta, Nb, V, Cr, Ti, Zr, or the boride, carbide, nitride, silicide, phosphide, and sulfide of rare earth metals.
  • the high-temperature non-metallic material can be boron carbide, silicon carbide, boron nitride, silicon nitride, boron phosphide, silicon phosphide, et al.
  • the high-temperature resistant material also includes alloy materials which can bear high-temperature, including high-temperature resistant iron-base alloy, nickel base alloy, aluminium base alloy, et al.
  • the high-temperature resistant material can also be composite materials, such as high-temperature resistant ceramics, kaolin, silicate, expanded perlite, and other similar composite materials which can bear the high-temperature.
  • the high-temperature resistant material further comprises carbonaceous material made of CNT (carbon nano tube) and other similar materials which can bear the high-temperature.
  • the lamp according to the alternative mode comprises a plurality of connecting elements 80A.
  • the connecting element 80A comprises a connector 81A and two maintaining members 82A adjacent to each other.
  • the connector 81A extends horizontally from the outer side of the second retention element 12 of the retention unit 10 to the inner side of the first retention element 11.
  • the maintaining members 82A are respectively provided at the top of the first retention element 11 and the top of the second retention element 12.
  • the maintaining members 82A respectively extend upwardly from the top of the first retention element 11 and the top of the second retention element 12 to couple with the connector 81A of the connecting elements 80A in a detachable connecting manner, so that the first retention element 11 and the second retention element 12 couple with the connector 81A of the connecting elements 80A.
  • the position of the connector 81A of each of the connecting elements 80A is higher than the position of the top of the first retention element 11 and the second retention element 12 of the retention unit 10.
  • the first fireproof element 71 and the second fireproof element of the fireproof unit 70 are preferably provided below the connectors 81A.
  • the first fireproof element 71 of the fireproof unit 70 will swell and seal the gap between the first retention element 11 of the retention unit 10 and the adjustment element 20 before the connectors 81A melt, so that the fire caused by the fire disaster is prevented from spreading to the outside of the lamp through the gap between the retention unit 10 and the adjustment element 20.
  • each of the connectors 81A of the lamp are made of high-temperature resistant material, each of the connectors 81A can keep its shape in the high-temperature environment in a relatively long period time to reduce the speed of breaking up of the lamp and further reduce the speed of the fire caused by the fire disaster spreading to the outside of the lamp.
  • the position of the first fireproof element 71 of the fireproof unit 70 is lower than the position of the connectors 81A.
  • the first fireproof element 71 is heated to swell in the high-temperature environment before the lamp is melted, so that the first fireproof element 71 seals the gap between the retention unit 10 and the adjustment element 20 and forms a seal between the retention unit 10 and the adjustment element 20 to prevent the fire spreading quickly to the position above the lamp.
  • each of the connector 81A which is made of high-temperature resistant material, and the first fireproof element 71 of the fireproof unit 70, which is provided between the retention unit 10 and the adjustment element 20 at a position lower than the connectors 81A reduce the speed of the breaking up of the lamp in the high temperature environment and further reduce the speed of the fire caused by the fire disaster spreading to the position above the lamp.
EP13835416.2A 2012-09-04 2013-08-28 Lamp Active EP2894391B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210337809.4A CN102878504B (zh) 2012-08-02 2012-09-04 灯具
PCT/CN2013/082460 WO2014036906A1 (zh) 2012-09-04 2013-08-28 灯具

Publications (3)

Publication Number Publication Date
EP2894391A1 EP2894391A1 (en) 2015-07-15
EP2894391A4 EP2894391A4 (en) 2016-05-25
EP2894391B1 true EP2894391B1 (en) 2018-05-09

Family

ID=50237857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13835416.2A Active EP2894391B1 (en) 2012-09-04 2013-08-28 Lamp

Country Status (4)

Country Link
EP (1) EP2894391B1 (zh)
CN (1) CN102878504B (zh)
DK (1) DK2894391T3 (zh)
WO (1) WO2014036906A1 (zh)

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CN102878504B (zh) * 2012-08-02 2015-11-25 武良举 灯具
CN106764721B (zh) * 2013-02-21 2019-07-12 佛山市威得士灯饰电器有限公司 灯具
CN103363408B (zh) * 2013-04-26 2016-08-10 佛山市威得士灯饰电器有限公司 天花灯具
CN203893076U (zh) * 2014-01-24 2014-10-22 武良举 光向调整装置
CN104329617B (zh) * 2014-10-24 2017-08-08 东莞雷笛扬照明有限公司 一种模组盒灯
WO2021055450A1 (en) * 2019-09-16 2021-03-25 Hubbell Incorporated Fire rated canless recessed luminaire

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CN2748777Y (zh) * 2004-11-02 2005-12-28 武良举 一种灯具防火罩
CN2937811Y (zh) * 2006-08-18 2007-08-22 武良举 嵌入式防火天花灯灯罩以及应用此灯罩制作的防火灯具
US7651238B2 (en) * 2007-01-10 2010-01-26 O'brien Aaron Fireproof trim and insulated lighting assembly
CN201072101Y (zh) * 2007-07-05 2008-06-11 武良举 一种筒形防火灯具
CN101280899B (zh) * 2008-04-11 2010-09-01 上海斯莱国际贸易有限公司 防火嵌灯
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CN202032487U (zh) * 2010-09-29 2011-11-09 武良举 灯具组装定位结构及嵌入式灯具
JP2012129172A (ja) * 2010-12-17 2012-07-05 Toshiba Lighting & Technology Corp 照明器具
CN102162586A (zh) * 2010-12-31 2011-08-24 范金晶 可倾角灯具
CN202303087U (zh) * 2011-10-31 2012-07-04 深圳市璇林电子科技有限公司 一种led天花灯
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Also Published As

Publication number Publication date
EP2894391A4 (en) 2016-05-25
WO2014036906A1 (zh) 2014-03-13
DK2894391T3 (en) 2018-08-13
EP2894391A1 (en) 2015-07-15
CN102878504A (zh) 2013-01-16
CN102878504B (zh) 2015-11-25

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