WO2019101309A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
WO2019101309A1
WO2019101309A1 PCT/EP2017/080126 EP2017080126W WO2019101309A1 WO 2019101309 A1 WO2019101309 A1 WO 2019101309A1 EP 2017080126 W EP2017080126 W EP 2017080126W WO 2019101309 A1 WO2019101309 A1 WO 2019101309A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
reflector
plate
illumination device
outlet
Prior art date
Application number
PCT/EP2017/080126
Other languages
English (en)
Inventor
Sean Joel BABBAGE
René Heinrich Augustinus SCHOTT
Original Assignee
Koninklijke Philips N.V.
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 Koninklijke Philips N.V. filed Critical Koninklijke Philips N.V.
Priority to PCT/EP2017/080126 priority Critical patent/WO2019101309A1/fr
Publication of WO2019101309A1 publication Critical patent/WO2019101309A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/0613—Apparatus adapted for a specific treatment
    • A61N5/0625—Warming the body, e.g. hyperthermia treatment
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N2005/002—Cooling systems
    • A61N2005/005—Cooling systems for cooling the radiator
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0635—Radiation therapy using light characterised by the body area to be irradiated
    • A61N2005/0636—Irradiating the whole body
    • A61N2005/064—Irradiating the whole body in a vertical position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0635—Radiation therapy using light characterised by the body area to be irradiated
    • A61N2005/0642—Irradiating part of the body at a certain distance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/065—Light sources therefor
    • A61N2005/0654—Lamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0658—Radiation therapy using light characterised by the wavelength of light used
    • A61N2005/0659—Radiation therapy using light characterised by the wavelength of light used infrared
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0664—Details
    • A61N2005/0665—Reflectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0664—Details
    • A61N2005/0667—Filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20—Lighting for medical use

Definitions

  • the present invention relates to an illumination device with an illumination source arranged in a housing.
  • a fan draws in cold outside air and directs the air flow along predetermined flow-paths.
  • the illumination source might emit light in different wavelength ranges, especially in the infrared region of the spectrum and is suitable for medical and health-care purposes.
  • infrared lamps typically use a halogen or incandescent light source and a glass fdter to remove unwanted wavelengths, thus reducing the output to infrared only. These lamps usually are used in the field of health care for example to relieve pain of muscles and offer relaxation.
  • DE 35 09 939 Al discloses an illumination device which features a reflector housing and multiple fans arranged behind and under the reflector housing.
  • the device further comprises two glass plates covering the reflector housing.
  • the fans direct a part of a circulating air flow between the glass plates and another part into the reflector housing.
  • an illumination device comprising: a housing having a first side and a second side opposite the first side, at least one inlet arranged at the first side of the housing, at least one outlet arranged at the second side of the housing, an illumination source arranged in the housing, a reflector which at least partially surrounds the illumination source, wherein the reflector has a first reflector side facing the first side of the housing and a second reflector side facing the second side of the housing, a fan arranged on the first side of the housing fluidly connected to the least one inlet, and a plate arranged on the second side of the housing, wherein the at least one outlet is arranged at an outer circumference of the plate, and wherein the fan is configured to draw cold ambient air into the housing through the at least one inlet, guide the cold ambient air from the first reflector side around an outer surface of the reflector through the housing along a predetermined first flow-path arranged in a space between an inner surface of the housing and the outer surface of the reflector
  • the advantage of the invention is that cold ambient air is sucked into the housing, led along the reflector and thus taking up heat. The hot air is then discharged at the plate which is the hottest outside part of the housing and not circulated through the housing towards a vent at the top or rear of the housing, resulting in heating up the housing or other parts of the device possibly being in contact to the user.
  • the cold ambient air enters the housing at the inlet region and passes the reflector on its outside thereby absorbing heat from its surface.
  • the heated air is discharged at the plate and is prevented from entering the housing again.
  • a particular advantage is that the reflector is cooled from its back end which is arranged on the first reflector side, whereas the reflector is open to the second reflector side where the plate is arranged. Since the illumination source is arranged closer to the back end of the reflector than to the front end of the reflector, most of the heat is generated at or near the back end of the reflector. Since the reflector is cooled from its back end, it is cooled from its hottest region. The cool air thus hits the hottest region of the reflector first, then surrounds the reflector, and finally the hot air leaves the housing at its second side.
  • the at least one outlet is an annular gap between the plate and the housing.
  • the annular gap which allows heated air to vent around the outer circumference of the plate, a steady discharge of heat can take place, thus cooling the illumination device very efficiently and without any danger to the user of the device.
  • the plate is attached to the housing at positioning points.
  • the positioning points provide each only a small contact area between the plate and the housing. Thus, only a small amount of heat will be transferred from the hot plate to the housing.
  • the housing remains cool to the touch of a user thus decreasing the danger of injuries by burning.
  • the plate is attached to a plate holder which is attached to the housing at positioning points.
  • the plate holder can work as a blind to allow treatment of smaller body parts without loss of heat.
  • the plate holder can be assembled with the plate to a semi-finished product which can be easily fitted to the housing without damage to one of the components.
  • interstices are formed between the positioning points.
  • the interstices allow the heated air to leave the housing without heat accumulation in the housing.
  • the interstices are part of the annular gap and form the at least one outlet through which the heated air is discharged. Heated air can thus leave around the whole circumference of the plate and not only through one vent opening in the housing.
  • the plate is arranged at a distance to the second reflector side of the reflector. This allows the heated air to travel along further directions through the housing and the reflector and to dissipate more heat from the hot components.
  • a second flow-path advantageously partly extends on the second reflector side of the reflector in a direction parallel to a plane of the plate and directly adjacent to the plate.
  • the first and second flow-paths exit the housing through the interstices between the fastening points. This is beneficial for the cooling effect of the whole device since also the air which enters the reflector can be discharged from the housing without heat accumulation in the reflector.
  • the illumination source is a halogen bulb or an incandescent light bulb. Any of these illumination means is widespread, cheap and easy to obtain and can be easily changed even by the user of the device.
  • the reflector extends along a main axis, and the fan is arranged on the main axis.
  • both the reflector and the fan are at least substantially symmetrical, preferably exactly symmetrical to said main axis. This allows the best possible cooling of the reflector from all sides.
  • the main axis of the reflector extends through the centrum of the plate. It is also preferred that the housing is symmetrical to a mid plane, wherein the main axis of the reflector lies in said mid plane or falls together with said mid plane.
  • the heated air is preferably discharged from the housing only through the at least one outlet and not through any other outlets, such that a backflow of hot air into the housing is prevented.
  • the plate includes a glass fdter for fdtering light of a predetermined wavelength produced by the illumination source.
  • This glass fdter is cooled in the above-mentioned way, especially by way of the second second flow- path.
  • Fig. 1 shows a sectional view of a preferred embodiment of the invention
  • Fig. 2A-2B shows perspective views of partial sectional views of the embodiment of Fig. 1.
  • Fig. 1 shows a schematic sectional side view of a first embodiment of an illumination device 1 according to the invention.
  • the illumination device 1 may serve a medical or health care purpose, e.g. for pain relief of blocked muscles and other therapeutic purposes, or for relaxation and leisure.
  • the illumination device 1 will preferably emit radiation in the infrared wavelength range between 0.7 and 1000 pm.
  • the illumination device 1 may also be referred to as pain relieving illumination device 1.
  • conventional illumination devices often are prone to high temperatures on the outer surfaces with the danger of injury of the user by burning. The reason for heating of the surface is lack of circulation of air and/or cooling means.
  • One possibility of lowering the temperature is use of light sources which are not heating up, but these light sources are expensive.
  • the invention proposes a different approach by a specific method of mounting the different components of the illumination device 1 as well as guiding the flow of air in and through the illumination device 1.
  • the illumination device 1 comprises a housing 2, which might for example be shaped in form of a hemisphere or in a parabolic shape or the like.
  • the housing 2 has a first side Sl and a second side S2.
  • the first side Sl is the rear side, while the second side S2 is the front side.
  • In the first side Sl at least one inlet 14 is formed.
  • the housing 2 can be manufactured from glass, plastics, metal or other suitable materials or mixtures thereof in a generally known fashion.
  • the housing 2 can be mounted on a holder or stand 11 as shown in Fig. 1.
  • An adjustment handle 12 to adjust inclination, direction of emission etc. can be present.
  • the housing 2 further can comprise a power connection (not shown) to be connected to an electric supply.
  • the illumination device 1 further comprises an illumination source 3, which can be an incandescent light bulb, a halogen bulb or any other suitable light source.
  • an illumination source 3 which can be an incandescent light bulb, a halogen bulb or any other suitable light source.
  • a halogen bulb is used.
  • the illumination source 3 is arranged in a reflector 8, which itself is arranged in the housing 2.
  • the reflector 8 has a concave shape and a reflecting surface to allow focusing the radiation of the illumination source 3.
  • a first reflector side Rl is orientated towards the first side Sl of the housing 2.
  • a second reflector side R2 is orientated towards the second side S2 of the housing 2.
  • the first reflector side Rl represents an outer surface of the reflector 8
  • the second reflector side R2 represents an inner surface of the reflector 8.
  • the illumination source 3 preferably is arranged in the focal point of the reflector 8 on the second reflector side R2 and on a rotational axis A’ of the reflector 8 which preferably extends in approximately the same direction as an axis A of the housing 2.
  • the axes A, A’ can also be identical. They extend through the first side Sl and the second side S2.
  • the reflector 8 can be shaped in a generally known fashion from suitable materials.
  • a transparent plate 4 is arranged on the housing 2. In the embodiment of Fig.
  • the plate 4 covers the second (open) side S2 of the housing 2, thus also covering the second reflector side R2 of the reflector 8.
  • the plate 4 is arranged in a plate holder 13.
  • the plate 4 can be mounted without plate holder directly to the housing 2 as detailed below.
  • the plate 4 is oriented perpendicular to the axis/axes A, A’ of the housing 2 and/or of the reflector 8.
  • the plate 4 can be orientated at a different angle with respect to the axes A, A’ of the housing 2 and the reflector 8.
  • the plate 4 can be a glass plate or a transparent or translucent plastic plate.
  • the plate 4 can e.g. be transparent to infrared wavelengths only.
  • the shape of the plate 4 preferably resembles the shape of the second (open) side S2 of the housing 2 and/or of the reflector 8. If the housing 2 and/or the reflector 8 is for example a paraboloid of rotation, the plate 4 will be circular. In the embodiment of Fig. 1, the housing 2 is approximately hemispheric, the reflector 8 is at least partially a paraboloid of rotation, and the plate 4 thus is of circular shape.
  • the plate holder 13 is also ring-shaped in the shown embodiment. Between the plate 4 and the housing 2 an annular gap is provided which forms the at least one outlet 15.
  • the plate 4 is attached to the housing 2 via the plate holder 13 by positioning points 10 which are spaced apart at predetermined distances.
  • the positioning points 10 are visible in Figs 2A and 2B.
  • a thermic decoupling of the plate 4 and the housing 2 and/or of the reflector 8 is possible to a large extent. Heat transfer to the housing 2 can thus be minimized.
  • the plate 4 can be directly fitted to the housing 2 by way of spacers which then perform the same task as the fastening points 10 of the plate holder 13.
  • a fan 5 is arranged, which is located at the first side of the housing 2 and in fluidic connection therewith.
  • the fan 5, the illumination source 3 and the plate 4 are arranged on the axes A, A’ of the reflector 8 and/or of the housing 2 in the sequence mentioned before.
  • the arrangement of the fan 5 with respect to the illumination source 3 and the plate 4 is crucial for the inventive effect.
  • the fan 5 sucks relatively cold ambient air C into the illumination device 1 and directs the cold ambient air C through a space 9 between the housing 2 and the reflector 8 from the first side of the housing Sl towards the first reflector side Rl .
  • a first flow-path 6 extends from the inlet 14 to the plate 4 and is guided by the outer shape of the reflector 8 and the inner shape of the housing 2.
  • interstices 7 are formed which connect the space 9 fluidic to the ambient.
  • the entity of interstices 7 forms the annular gap 17 and thus the outlet 15.
  • the cold ambient air C heats up while travelling through the space 9 and thus transports heat from the reflector 8 in direction of the plate 4.
  • the cold ambient air C which is now heated up leaves the housing 2 via the interstices 7 as heated air H.
  • the second reflector side R2 along the plate 4 is directed to the second reflector side R2 along the plate 4 in a direction parallel to a plane of the plate 4.
  • the direction of flow along this second flow-path 16 can be in an upward direction as shown in Fig. 1, but also a downward or sideward direction would be possible, especially when the cold ambient air C did not completely heat up during transit through the housing 2.
  • the plate 4 is cooled, which is also directly accessible by a user of the illumination device 1 and thus should remain as cool as possible.
  • the heated air H travelling along the second flow-path 16 is likewise discharged from the outlet 15.
  • FIGs 2 A and 2B two partial perspective views of the upper part of the illumination device 1 according to Fig. 1 and of the lower part of the illumination device 1 of Fig. 1 are shown.
  • Fig. 2A the plate holder 13 and the interstices 7 between the positioning points 10 are visible.
  • the positioning points 10 in this case are part of the plate holder 13 and are used to position the plate holder 13 to the housing 2. Since the positioning points 10 are spaced apart, only a very small amount of heat can be dissipated from the plate 4 to the housing 2 via the plate holder 13. If the plate 4 is fixed directly to the housing 2, e.g. by spacers (not shown in Figs.), the same effect can be achieved. The less positioning points 10 are present, the less heat will be transferred from the plate 4 to the housing 2. For example, to fix a circular plate 4 to the housing 2, as little as two or three positioning points 10 would be sufficient.
  • the heated air H is vented through the interstices 7 at the circumference of the plate 4. In other words, there will be a flow of heated air H from the interstices 7 as shown by the arrows in Fig. 2A. This flow of heated air H can be used for further purposes within the therapeutic range of purposes of the inventive illumination device 1.
  • Fig. 2B the lower part of the illumination device 1 is shown.
  • the fan 5 is visible, where the cold ambient air C is drawn into the housing 2.
  • the air After passing the space 9 in the housing 2 along the surface on the first reflector side Rl of the reflector 8, the air has taken up warmth and flows as heated air H through the lower interstices 7 to the outside or partially along the surface of the plate 4 on the second flow-path 16, thus cooling the plate 4.
  • the partially diverted flow-path 16 along the plate 4 extends to further interstices 7 in different locations along the circumference of the plate 4.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Engineering & Computer Science (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

La présente invention concerne un dispositif d'éclairage (1) comprenant un boîtier (2) ayant un premier côté (S1) et un second côté (S2) opposé au premier côté (SI), au moins une entrée (14) disposée au niveau du premier côté (S1) du boîtier (2), au moins une sortie (15) disposée sur le second côté (S2) du boîtier (2), une source d'éclairage (3) disposée dans le boîtier (2), un réflecteur (8) qui entoure au moins partiellement la source d'éclairage (3), le réflecteur (8) présentant un premier côté de réflecteur (R1) faisant face au premier côté (S1) du boîtier (2) et un deuxième côté de réflecteur (R2) faisant face au deuxième côté (S2) du boîtier (2), un ventilateur (5) disposé sur le premier côté (SI) du boîtier (2) en communication fluidique avec au moins une entrée (14), et une plaque (4) disposée sur le second côté (S2) du boîtier (2), l'au moins une sortie (15) étant disposée au niveau d'une circonférence extérieure de la plaque (4), et le ventilateur (5) étant configuré pour aspirer de l'air ambiant froid (C) dans le boîtier (2) à travers l'au moins une entrée (14), guider l'air ambiant froid (C) depuis le premier côté réflecteur (R1) autour d'une surface externe du réflecteur (8) à travers le boîtier (2) le long d'un premier trajet d'écoulement prédéterminé (6) disposé dans un espace (9) entre une surface interne du boîtier (2) et la surface externe du réflecteur (8) et évacuer l'air chauffé (H) à travers l'au moins une sortie (15).
PCT/EP2017/080126 2017-11-22 2017-11-22 Dispositif d'éclairage WO2019101309A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/080126 WO2019101309A1 (fr) 2017-11-22 2017-11-22 Dispositif d'éclairage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/080126 WO2019101309A1 (fr) 2017-11-22 2017-11-22 Dispositif d'éclairage

Publications (1)

Publication Number Publication Date
WO2019101309A1 true WO2019101309A1 (fr) 2019-05-31

Family

ID=60543534

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/080126 WO2019101309A1 (fr) 2017-11-22 2017-11-22 Dispositif d'éclairage

Country Status (1)

Country Link
WO (1) WO2019101309A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792230A (en) * 1972-03-30 1974-02-12 Industrial Innovations Inc Gas-cooled torch lamp
DE3509939A1 (de) 1985-03-19 1986-09-25 Rudolf Dipl.-Ing. 6360 Friedberg Weiner Bestrahlungseinrichtung
US5742392A (en) * 1996-04-16 1998-04-21 Seymour Light, Inc. Polarized material inspection apparatus
DE102011008613A1 (de) * 2010-01-21 2011-07-28 Traxon Technologies Ltd. Beleuchtungsvorrichtung
EP3321574A1 (fr) * 2016-11-14 2018-05-16 Koninklijke Philips N.V. Dispositif d'éclairage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792230A (en) * 1972-03-30 1974-02-12 Industrial Innovations Inc Gas-cooled torch lamp
DE3509939A1 (de) 1985-03-19 1986-09-25 Rudolf Dipl.-Ing. 6360 Friedberg Weiner Bestrahlungseinrichtung
US5742392A (en) * 1996-04-16 1998-04-21 Seymour Light, Inc. Polarized material inspection apparatus
DE102011008613A1 (de) * 2010-01-21 2011-07-28 Traxon Technologies Ltd. Beleuchtungsvorrichtung
EP3321574A1 (fr) * 2016-11-14 2018-05-16 Koninklijke Philips N.V. Dispositif d'éclairage

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