EP2344814A1 - Ceiling element - Google Patents

Ceiling element

Info

Publication number
EP2344814A1
EP2344814A1 EP09821650A EP09821650A EP2344814A1 EP 2344814 A1 EP2344814 A1 EP 2344814A1 EP 09821650 A EP09821650 A EP 09821650A EP 09821650 A EP09821650 A EP 09821650A EP 2344814 A1 EP2344814 A1 EP 2344814A1
Authority
EP
European Patent Office
Prior art keywords
ceiling element
inlet
air
air flow
light source
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.)
Granted
Application number
EP09821650A
Other languages
German (de)
French (fr)
Other versions
EP2344814A4 (en
EP2344814B1 (en
Inventor
Mikko MYYRYLÄINEN
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.)
CAVERION SUOMI Oy
Original Assignee
YIT KIINTEISTOETEKNIIKKA Oy
Yit Kiinteistotekniikka Oy
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 YIT KIINTEISTOETEKNIIKKA Oy, Yit Kiinteistotekniikka Oy filed Critical YIT KIINTEISTOETEKNIIKKA Oy
Publication of EP2344814A1 publication Critical patent/EP2344814A1/en
Publication of EP2344814A4 publication Critical patent/EP2344814A4/en
Application granted granted Critical
Publication of EP2344814B1 publication Critical patent/EP2344814B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/078—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser combined with lighting fixtures
    • 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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0088—Ventilating systems
    • F21V33/0092—Ventilating systems with heating or cooling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
    • F24F3/056—Systems in which all treatment is given in the central station, i.e. all-air systems the air at least partially flowing over lighting fixtures, the heat of which is dissipated or used 
    • 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
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • F21V29/677—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for discharging
    • 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]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/02—Details or features not otherwise provided for combined with lighting fixtures

Definitions

  • This invention relates to a ceiling element intended for forming a part of the suspended ceiling of a space and having temperature control means for controlling the temperature of the space.
  • Prior art discloses a ceiling element to be arranged on the ceiling of a room or another space, the element forming a part of the suspended ceiling of the space and being provided with temperature control means for controlling the temperature of the space via a warm air flow flowing from the ceiling element.
  • the ceiling element is provided with a pipe system for supplying warm fluid, such as warm water, via the inlet of the ceiling element into the flow channel of the ceiling element.
  • the flow channel or a heat exchanger forming a part of it is positioned in an air flow supplied via the air supply opening of the ceiling element into the space for warming the space.
  • the cooled fluid is removed from the flow channel via an outlet opening to a separate heating apparatus for reheating.
  • one or more light sources are also arranged for illuminating the surroundings.
  • the ceiling element could utilize light sources consuming as little electric energy as possible.
  • Light sources consuming the least energy such as LED (Light Emitting Diode) lamps are not, however, suitable to be used as light sources in connection with known ceiling elements because they heat too much, which means that their service life is too short.
  • An object of this invention is to solve the above problem and to provide a solution which allows light sources consuming as little electric energy as possible to be used in a ceiling element. This object is achieved with a ceiling element according to independent claim 1.
  • the invention utilizes an air flow flowing from the inlet of the ceiling element towards the air supply opening, part of the air flow being separated to a nozzle.
  • the nozzle generates a cooling air flow to the light source of the ceiling element. Thanks to the air flow provided for the light source by the nozzle, the thermal stress generated by the light source can be efficiently taken away from the light source along with the air flow, so that the temperature of the light source can be controlled better than before and its service life can be made longer.
  • Figure 1 illustrates a first embodiment of the ceiling element according to the invention
  • Figure 2 illustrates a second embodiment of the ceiling element according to the invention.
  • Figure 3 illustrates a third embodiment of the ceiling element according to the invention.
  • Figure 1 illustrates a first preferred embodiment of a ceiling element 1.
  • the ceiling element 1 is arranged in connection with a suspended ceiling 2 of a room or space, and it comprises an air supply opening 3 for supplying an air flow into the space located below the ceiling element 1.
  • the ceiling element 1 may be suspended on the actual ceiling of the space, for example.
  • the air flow is conveyed to an inlet 4 of the ceiling element 1 along a pipe 5.
  • the pipe 5 may be attached to the ventilation installation of the real estate, by means of which installation fresh air is brought to the space where the ceiling element 1 resides.
  • the air flow is generated by a fan belonging to the ventilation installation of the real estate.
  • the ceiling element 1 of Figure 1 also comprises light sources 6.
  • these sources are formed specifically by LED lamps comprising a plurality of light emitting diodes arranged close to each other and illuminating the surroundings of the ceiling element 1, i.e. the space where the ceiling element resides.
  • the electric connections of the light sources 6 are implemented in the inside of a housing 7 of the ceiling element 1 , to which a body 9 of the light sources 6 extends.
  • the ceiling element comprises nozzles 10 which generate, out of some of the air flow flowing from the inlet 4 of the ceiling element, a cooling flow to the light sources 6.
  • the nozzles may be formed of openings arranged at appropriate points to enable an air flow to the light sources.
  • the nozzles 10 comprise a tubular portion with which a cooling flow can be accurately directed towards the body 9 of the light sources 6 extending to the inside of the housing 7.
  • the body 9 of the light sources 6 may be provided with cooling elements 12, which may be formed of adjacent cooling fins increasing the area to be cooled. However, this is not necessary in embodiments in which the air flow directed at the body provides sufficient cooling efficiency.
  • the ceiling element 1 comprises temperature control means which change the temperature of the air flow flowing from the inlet 4 to the air supply opening 3.
  • the temperature control means comprise a flow channel 13 to an inlet 14 of which fluid, such as water, is supplied by means of a pipe 16 and from an outlet 15 of which fluid having flown through the flow channel is removed by means of a pipe 17.
  • the flow channel 13 or a heat exchanger forming a part of it is arranged in the air flow flowing from the inlet 4 to the air supply opening 3 to change the temperature of this air flow.
  • the temperature control means cool the air flow before it ends up in the nozzles 10, whereby cooling of the light sources is at its most efficient. If the ceiling element 1 is, by contrast, used to heat the space where the ceiling element resides, the fluid to be supplied to the inlet of the flow channel 13 is hot. Thus, in the example of Figure 1 , the temperature control means heat the air flow before it ends up in the nozzles 10, whereby cooling of the light sources is not quite as efficient as in connection with cold fluid.
  • the temperature of the air flow required for heating the room or space is sufficiently low, so that this air flow is applicable to cooling the light sources.
  • the ceiling element according to the invention can be utilized in both cases. In other words, one single ceiling element can be provided with hot fluid to heat the space during the cold season and with cold fluid to cool the space during the warm season.
  • the temperature control means are arranged to heat or cool the air flow before some of it is separated to the nozzle 10.
  • the nozzles 10 are positioned in the flowing direction of air before the temperature control means.
  • the temperature of the air flow ending up at the nozzles 10 is the same as the temperature of the air flow to be supplied to the inlet, and only the temperature of the air flow flowing further to the inlet opening 3 is changed.
  • Figure 2 illustrates a second preferred embodiment of a ceiling element V according to the invention.
  • the embodiment of Figure 2 corresponds to a great extent to the embodiment of Figure 1 , due to which the embodiment of Figure 2 is described in the following primarily by bringing forth differences between the embodiments.
  • the ceiling element 1' also comprises a fan 18 to generate an air flow from the inlet 4 to the air supply opening 3.
  • the air intake opening of the fan opens to above the ceiling element 1 ⁇ i.e. in practice to the space between the suspended ceiling 2 and the actual ceiling of the space or room.
  • the air intake may alternatively take place from the room or space itself, in which case the suspended ceiling, for example, may have an opening connected via a pipe to the air intake opening of the fan 18.
  • the ceiling element 1' generates a closed cycle in the room or space where it resides. In such a solution, fresh air is conveyed to the room or space in another way.
  • Figure 3 illustrates a third preferred embodiment of the ceiling element according to the invention.
  • the embodiment of Figure 3 corresponds to a great extent to the embodiment of Figure 1 , due to which the embodiment of Figure 3 is described in the following primarily by bringing forth differences between the embodiments.
  • the light sources 6 are arranged on a ceiling element 1" in such a way that their bodies 9 are positioned completely or nearly completely outside the housing 7 of the ceiling element 1".
  • nozzles 10' are arranged to project out of the housing of the ceiling element 1" to control some of the air flow originating from the inlet 4 towards the light sources 6. Openings 11 according to the preceding embodiments are thus not needed in this embodiment.
  • the body 9 of the light source 6 is shown without the cooling element 12 according to the preceding embodiments, although also in this embodiment the body of the light source may be provided with a cooling element increasing the area to be cooled.
  • the ceiling element 1" has no fan but that the flowing air is conveyed along the pipe 5 to the inlet of the ceiling element 1".
  • the solution described in the context of Figure 2 may be used, whereby the ceiling element 1 " comprises a fan which is similar to the one in Figure 2 and whose air intake opening takes some or all of the required air from the space or room where the ceiling element 1" resides.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

This invention relates to a ceiling element (1) comprising: an inlet (4) for receiving an air flow; an air supply opening (3) for supplying an air flow into a space; temperature control means (13 to 15) for changing the temperature of the air flow flowing from the inlet (4) to the air supply opening (3); and at least one light source (6) for illuminating the surroundings of the ceiling element (1). In order for the ceiling element to be able to utilize light sources whose electric energy consumption is as low as possible, the ceiling element (1) comprises a nozzle (10) for generating a cooling flow to said at least one light source (6) by utilizing the air flow received from the inlet (4).

Description

CEILING ELEMENT
FIELD OF THE INVENTION
[0001] This invention relates to a ceiling element intended for forming a part of the suspended ceiling of a space and having temperature control means for controlling the temperature of the space.
DESCRIPTION OF PRIOR ART
[0002] Prior art discloses a ceiling element to be arranged on the ceiling of a room or another space, the element forming a part of the suspended ceiling of the space and being provided with temperature control means for controlling the temperature of the space via a warm air flow flowing from the ceiling element. In this known solution, the ceiling element is provided with a pipe system for supplying warm fluid, such as warm water, via the inlet of the ceiling element into the flow channel of the ceiling element. The flow channel or a heat exchanger forming a part of it is positioned in an air flow supplied via the air supply opening of the ceiling element into the space for warming the space. The cooled fluid is removed from the flow channel via an outlet opening to a separate heating apparatus for reheating.
[0003] In connection with the above-described known ceiling element, one or more light sources are also arranged for illuminating the surroundings. To minimize electricity consumption, it would be preferable if the ceiling element could utilize light sources consuming as little electric energy as possible. Light sources consuming the least energy, such as LED (Light Emitting Diode) lamps are not, however, suitable to be used as light sources in connection with known ceiling elements because they heat too much, which means that their service life is too short.
SUMMARY OF THE INVENTION
[0004] An object of this invention is to solve the above problem and to provide a solution which allows light sources consuming as little electric energy as possible to be used in a ceiling element. This object is achieved with a ceiling element according to independent claim 1.
[0005] The invention utilizes an air flow flowing from the inlet of the ceiling element towards the air supply opening, part of the air flow being separated to a nozzle. The nozzle generates a cooling air flow to the light source of the ceiling element. Thanks to the air flow provided for the light source by the nozzle, the thermal stress generated by the light source can be efficiently taken away from the light source along with the air flow, so that the temperature of the light source can be controlled better than before and its service life can be made longer.
[0006] Preferred embodiments of the ceiling element according to the invention become apparent from the attached dependent claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] In the following, the invention will be described in greater detail by way of example, referring to the attached figures, of which:
[0008] Figure 1 illustrates a first embodiment of the ceiling element according to the invention;
[0009] Figure 2 illustrates a second embodiment of the ceiling element according to the invention; and
[0010] Figure 3 illustrates a third embodiment of the ceiling element according to the invention.
DESCRIPTION OF AT LEAST ONE EMBODIMENT
[0011] Figure 1 illustrates a first preferred embodiment of a ceiling element 1. The ceiling element 1 is arranged in connection with a suspended ceiling 2 of a room or space, and it comprises an air supply opening 3 for supplying an air flow into the space located below the ceiling element 1. The ceiling element 1 may be suspended on the actual ceiling of the space, for example.
[0012] In the example of Figure 1 , the air flow is conveyed to an inlet 4 of the ceiling element 1 along a pipe 5. The pipe 5 may be attached to the ventilation installation of the real estate, by means of which installation fresh air is brought to the space where the ceiling element 1 resides. Thus, the air flow is generated by a fan belonging to the ventilation installation of the real estate.
[0013] The ceiling element 1 of Figure 1 also comprises light sources 6. In this example, it is assumed that these sources are formed specifically by LED lamps comprising a plurality of light emitting diodes arranged close to each other and illuminating the surroundings of the ceiling element 1, i.e. the space where the ceiling element resides. The electric connections of the light sources 6 are implemented in the inside of a housing 7 of the ceiling element 1 , to which a body 9 of the light sources 6 extends. To guarantee sufficient cooling efficiency for the light sources 6, the ceiling element comprises nozzles 10 which generate, out of some of the air flow flowing from the inlet 4 of the ceiling element, a cooling flow to the light sources 6. At their simplest, the nozzles may be formed of openings arranged at appropriate points to enable an air flow to the light sources. However, in the example of Figure 1 , it is assumed that the nozzles 10 comprise a tubular portion with which a cooling flow can be accurately directed towards the body 9 of the light sources 6 extending to the inside of the housing 7.
[0014] In order to transfer thermal stress generated by the light sources as efficiently as possible to the cooling flow generated by the nozzles 10, the body 9 of the light sources 6 may be provided with cooling elements 12, which may be formed of adjacent cooling fins increasing the area to be cooled. However, this is not necessary in embodiments in which the air flow directed at the body provides sufficient cooling efficiency.
[0015] The cooling air flow ending up in the housing 7 of the ceiling element from the nozzles 10 is conveyed out of the housing 7 via outlet openings 11. It is assumed in the example of Figure 1 that the air flow from the outlet openings 11 ends up in the space where the ceiling element resides. In such a solution, the area of the outlet openings 11 is preferably smaller than the area of the nozzles 10, whereby overpressure is generated in the housing 7, where the bodies 9 of the light sources 6 to be cooled are positioned.
[0016] The ceiling element 1 comprises temperature control means which change the temperature of the air flow flowing from the inlet 4 to the air supply opening 3. In the example of Figure 1 , the temperature control means comprise a flow channel 13 to an inlet 14 of which fluid, such as water, is supplied by means of a pipe 16 and from an outlet 15 of which fluid having flown through the flow channel is removed by means of a pipe 17. The flow channel 13 or a heat exchanger forming a part of it is arranged in the air flow flowing from the inlet 4 to the air supply opening 3 to change the temperature of this air flow.
[0017] If the ceiling element 1 is used to cool the space where the ceiling element resides, the fluid to be supplied to the inlet 14 of the flow channel 13 is cold. Thus, in the example of Figure 1 , the temperature control means cool the air flow before it ends up in the nozzles 10, whereby cooling of the light sources is at its most efficient. If the ceiling element 1 is, by contrast, used to heat the space where the ceiling element resides, the fluid to be supplied to the inlet of the flow channel 13 is hot. Thus, in the example of Figure 1 , the temperature control means heat the air flow before it ends up in the nozzles 10, whereby cooling of the light sources is not quite as efficient as in connection with cold fluid. In practice, however, the temperature of the air flow required for heating the room or space is sufficiently low, so that this air flow is applicable to cooling the light sources. The ceiling element according to the invention can be utilized in both cases. In other words, one single ceiling element can be provided with hot fluid to heat the space during the cold season and with cold fluid to cool the space during the warm season.
[0018] Above, it has been described in accordance with Figure 1 that the temperature control means are arranged to heat or cool the air flow before some of it is separated to the nozzle 10. However, it is also feasible that the nozzles 10 are positioned in the flowing direction of air before the temperature control means. Thus, the temperature of the air flow ending up at the nozzles 10 is the same as the temperature of the air flow to be supplied to the inlet, and only the temperature of the air flow flowing further to the inlet opening 3 is changed.
[0019] Figure 2 illustrates a second preferred embodiment of a ceiling element V according to the invention. The embodiment of Figure 2 corresponds to a great extent to the embodiment of Figure 1 , due to which the embodiment of Figure 2 is described in the following primarily by bringing forth differences between the embodiments.
[0020] In the case of Figure 2, the ceiling element 1' also comprises a fan 18 to generate an air flow from the inlet 4 to the air supply opening 3. By way of example, it is assumed in the case of Figure 2 that the air intake opening of the fan opens to above the ceiling element 1\ i.e. in practice to the space between the suspended ceiling 2 and the actual ceiling of the space or room. In accordance with the invention, the air intake may alternatively take place from the room or space itself, in which case the suspended ceiling, for example, may have an opening connected via a pipe to the air intake opening of the fan 18. In both cases, the ceiling element 1' generates a closed cycle in the room or space where it resides. In such a solution, fresh air is conveyed to the room or space in another way.
[0021] Deviating from the case of Figure 2, it is also feasible that also a pipe 5 supplying fresh air leads to the air inlet opening of the fan 18, as in the case of Figure 1. In such a case, some of the air ending up in the air inlet opening of the fan 18 may be fresh air to be supplied along the pipe 5, and some may be air to be recycled, originating from the room or space (from above or below the suspended ceiling 2) where the ceiling element resides.
[0022] Figure 3 illustrates a third preferred embodiment of the ceiling element according to the invention. The embodiment of Figure 3 corresponds to a great extent to the embodiment of Figure 1 , due to which the embodiment of Figure 3 is described in the following primarily by bringing forth differences between the embodiments.
[0023] In the embodiment of Figure 3, the light sources 6 are arranged on a ceiling element 1" in such a way that their bodies 9 are positioned completely or nearly completely outside the housing 7 of the ceiling element 1". Thus, nozzles 10' are arranged to project out of the housing of the ceiling element 1" to control some of the air flow originating from the inlet 4 towards the light sources 6. Openings 11 according to the preceding embodiments are thus not needed in this embodiment.
[0024] In Figure 3, the body 9 of the light source 6 is shown without the cooling element 12 according to the preceding embodiments, although also in this embodiment the body of the light source may be provided with a cooling element increasing the area to be cooled.
[0025] In the embodiment of Figure 3 it is assumed, by way of example, that the ceiling element 1" has no fan but that the flowing air is conveyed along the pipe 5 to the inlet of the ceiling element 1". Deviating from what is shown in Figure 3, the solution described in the context of Figure 2 may be used, whereby the ceiling element 1 " comprises a fan which is similar to the one in Figure 2 and whose air intake opening takes some or all of the required air from the space or room where the ceiling element 1" resides.
[0026] It is to be understood that the above description and the related figures are only intended to illustrate the present invention. Different variations and modifications of the invention will be obvious to a person skilled in the art without deviation from the scope of the invention.

Claims

1. A ceiling element (1 , 1 ', 1 "), comprising: an inlet (4) for receiving an air flow; an air supply opening (3) for supplying an airflow into a space; temperature control means (13 to 15) for changing the temperature of the air flow flowing from the inlet (4) to the air supply opening (3); and at least one light source (6) for illuminating the surroundings of the ceiling element (1 , 1 ', 1 "), characterized in that the ceiling element (1, 1', 1") comprises a nozzle (10, 10') for generating a cooling flow to said at least one light source (6) by utilizing the air flow received from the inlet (4), whereby said temperature control means (13 to 15) change the temperature of the air flow flowing from the inlet (4) before the air flow is conveyed via said nozzle (10, 10') to said at least one light source (6).
2. A ceiling element according to claim 1, characterized in that said light source (6) is a LED lamp.
3. A ceiling element according to claim 1 or 2, characterized in that the light source (6) comprises a cooling element (12) for transferring thermal stress generated by the light source to the surrounding air, and that said nozzle (10) is directed to generate a cooling flow to the cooling element.
4. A ceiling element according to any one of claims 1 to 3, characterized in that the ceiling element (1 ') comprises a fan (18) for generating an air flow from the inlet (4) to the air supply opening (3) and the nozzle (10).
5. A ceiling element according to any one of claims 1 to 4, characterized in that the temperature control means (13 to 15) heat the air flow flowing from the inlet (4) to the air supply opening (3).
6. A ceiling element according to any one of claims 1 to 4, characterized in that the temperature control means (13 to 15) cool the air flow flowing from the inlet (4) to the air supply opening (3).
7. A ceiling element according to any one of claims 1 to 6, characterized in that the temperature control means of the ceiling element (1, 1', 1") comprise a flow channel (13) arranged in the airflow flowing from the inlet (4) to the air supply opening (3); an inlet (14) for receiving a warm or a cold fluid, respectively, and for conveying it to the flow channel (13); and an outlet (15) for supplying the fluid having flown through the flow channel (13) from the flow channel onwards.
8. A ceiling element (1 , 1') according to any one of preceding claims 1 to 7, c h a r a c t e r i z e d in that a part (9, 12) of said at least one light source (6), at which the cooling flow is directed, is arranged in a housing (7) to which the nozzle or nozzles (10) open to generate a cooling flow to said at least one light source
(6); that said housing (7) has an outlet opening or outlet openings (11) for removing the air having flown into it from the nozzle or nozzles (10), the air being removed out of the housing (7) to the surroundings of the ceiling element (1 , 1') and that the area of the outlet opening or outlet openings (11) of the housing is smaller than the area of the nozzle or nozzles (10) to generate overpressure in said housing (7).
EP09821650.0A 2008-10-22 2009-10-21 Ceiling element Active EP2344814B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20085999A FI123815B (en) 2008-10-22 2008-10-22 Ceiling element
PCT/FI2009/050845 WO2010046536A1 (en) 2008-10-22 2009-10-21 Ceiling element

Publications (3)

Publication Number Publication Date
EP2344814A1 true EP2344814A1 (en) 2011-07-20
EP2344814A4 EP2344814A4 (en) 2015-04-01
EP2344814B1 EP2344814B1 (en) 2018-11-28

Family

ID=39924639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09821650.0A Active EP2344814B1 (en) 2008-10-22 2009-10-21 Ceiling element

Country Status (3)

Country Link
EP (1) EP2344814B1 (en)
FI (1) FI123815B (en)
WO (1) WO2010046536A1 (en)

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CN110945248A (en) * 2017-08-17 2020-03-31 昕诺飞控股有限公司 Segmented heating light fixture with integrated air multiplier

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EP2344814A4 (en) 2015-04-01
FI20085999A (en) 2010-04-23
FI123815B (en) 2013-11-15
WO2010046536A1 (en) 2010-04-29
EP2344814B1 (en) 2018-11-28
FI20085999A0 (en) 2008-10-22

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