• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a luminaire for installation in a refrigerated shelf, a refrigerated counter or a freezer, wherein the lamp comprises a housing of an elongated profile body (2) which is approximately lenticular or wing-shaped in cross-section perpendicular to the longitudinal extent, and the profile body (2) at least an interior (5) of the housing defined in which one or more rows of LEDs (12) in the longitudinal direction of the profile body (2) are arranged opposite to a light exit opening.
    公开号:AT12909U1
    申请号:TGM726/2010U
    申请日:2010-11-25
    公开日:2013-01-15
    发明作者:
    申请人:Siteco Beleuchtungstech Gmbh；
    IPC主号:
    专利说明:

    Austrian Patent Office AT 12 909 Ul 2013-01-15
    description
    LED refrigerated LIGHT
    The invention relates to a lamp for installation in a refrigerated shelf, a refrigerated display case or a freezer, as used in particular for the presentation of goods for sale.
    For the presentation of goods, it is necessary to illuminate refrigerators in the sales area from the inside. In contrast to lighting in a standard household refrigerator, which only switches on when the door is open, the constant lighting of goods in refrigerators for sales purposes makes higher demands. The heat input in the cooling units should be as low as possible due to the constant lighting. Furthermore, the lighting should be suitable to illuminate the goods evenly, let the colors of the illuminated goods come into their own well and in particular to avoid light reflections on the high-gloss surfaces of the outer packaging of the goods.
    There is therefore a need for a lamp that is optimized for installation in a refrigerator, which is used for merchandise presentation for sales purposes.
    According to the invention, a luminaire for installation in a refrigerated shelf, a refrigerated display case or a freezer comprises: [0006] a housing with an elongate profile body which is approximately lenticular or wing-shaped in cross-section perpendicular to the longitudinal extension, wherein the profile body is at least defines an interior of the housing, in which one or more rows of LEDs are arranged in the longitudinal direction of the profile body with respect to a light exit opening.
    By the use of LEDs (light emitting diodes), including OLEDs (organic light emitting diodes) are to be understood, the heat input is kept low in the refrigerator by the lighting device for a given level of illumination. The LEDs also have a long life and are insensitive to vibration from the cooling units. Furthermore, advantages are achieved by the special housing shape. Due to the design, an approximately laminar air flow in the area of the luminaire is possible. The airflow can be used to cool the LEDs across the exterior of the enclosure. Separate heatsinks for LEDs, which are common in conventional LED lights, can be omitted in the luminaire according to the invention. Furthermore, air turbulences are avoided by the housing shape, which would disturb the cooling circuit and could lead to the accumulation of dust in certain spatial areas of the refrigerator or on the goods.
    According to a preferred embodiment, the ratio between the maximum height and the width of the cross section of the profile body is less than 1: 3, preferably less than 1: 5. These cross-sections allow for nearly laminar airflow around the housing.
    According to a preferred embodiment, the profile body is at least partially made of metal, in particular of aluminum. The use of metal ensures a good thermal conductivity. This allows the heat generated by the LEDs in operation to be dissipated through the housing to the airflow surrounding the housing. The air flow can be caused for example by convection in the refrigerator. With other refrigerators, it is also possible that the air flow is generated by a fan.
    According to a preferred embodiment, the outer surfaces of the profile body are rounded in cross-section to the longitudinal extent. This favors the laminar flow of air around the housing. Furthermore, the housing is easy to clean. This is advantageous because the lights are usually mounted hidden in the refrigerators and are therefore difficult to access for cleaning.
    According to a preferred embodiment, the light exit surface of the housing 1/7 Austrian Patent Office AT12 909U1 2013-01-15 is closed by a transparent cover, which forms part of the lenticular or wing-shaped profile. Preferably, the cover is verras-tet with the profile body. By cooling fans or compressors in the refrigerator constantly vibrations are transmitted to the lamp. In order to secure all parts vibration-proof or to deaden the housing, locking connections are therefore preferred. According to an alternative embodiment, a transparent potting compound for closing the profile body is provided instead of the transparent cover. For example, the interior of the profile body, in which the LEDs are received, be completely filled with the potting compound. The potting compound may be formed of a clear transparent material or it can be light-scattering body contained in the transparent potting compound.
    According to a preferred embodiment, the LEDs are mounted in thermal contact with the profile body. This allows heat dissipation of the LEDs through the housing. In low-power LEDs, however, it is also sufficient if the heat generated during operation of the LEDs is transmitted by heat radiation or convection within the lamp housing to the profile body. In these embodiments, it is not mandatory that there be good thermal contact between the LEDs and the profile body.
    According to a preferred embodiment, the LEDs are arranged on one or more boards, which is preferably mounted in thermal contact with a profile body or are.
    Preferably, the boards can be removed, for example by latching connections from the housing in order to replace the bulbs can.
    Embodiments of the invention provide in a row between about 25 and 250 LEDs. With the large number of LEDs, low power LEDs (e.g., less than 100 mW to 500 mW) are sufficient. These are preferred at ambient temperatures between about -25 ° C (freezer area) and + 4 < € (refrigerated shelves). The large number of LEDs also has the advantage that due to the high number of light points, a reduced shadowing on the surface to be illuminated is caused.
    According to one embodiment of the present invention, the housing is frontally equipped with fastening means for securing the lamp in a refrigerator. In particular fasteners are preferred, which allow pivoting of the housing about a longitudinal axis of the housing or an axis parallel thereto, or allow positioning of the housing in different mounting positions, in particular at different angles with respect to the longitudinal axis. The adjustability of the lights about the longitudinal axis advantageously allows the illumination of goods which are arranged in the cooling device. Furthermore, this allows the light to use to direct an air flow in the refrigerator.
    The present invention also relates to a mounting floor of a refrigerated shelf, a refrigerated display case or a freezer, in which a lamp is installed according to one of the aforementioned embodiments such that an air flow can form around the profile body. For this purpose, the lamp is preferably attached only to the end faces. In cross-section is given from all sides of the lamp housing at least one gap to the adjacent components of the mounting floor to allow air flow around the lamp. The air flow can either be formed by convection in the refrigerator or can be generated by a separate fan.
    Further technical details and advantages of the present invention will be explained in connection with a preferred embodiment with reference to the accompanying figures.
    FIG. 1 shows a cross section through an embodiment of a refrigerated shelf luminaire.
    Figure 2 shows a lamp according to Figure 1 with air baffle, which is installed in a cooling rack mounted on it, wherein the air flow around the lamp is indicated by arrows. A luminaire for installation in a cooling device, in particular in a cooling rack, is shown in cross section in FIG. 1. The luminaire has a longitudinal extent (perpendicular to the image plane of FIG. 1) of approximately 1250 mm (preferred lengths are between 800 mm and 1500 mm).
    The luminaire has a lamp body in the form of a profile body 2. The profile body 2 is formed by a Aluminiumstranpressprofil. The constant over the length of the lamp cross-sectional shape of the profile body 2 is approximately lenticular, the outer edges are rounded at the longitudinal sides. The ratio of fleas to width of the luminaire of the embodiment shown is about 1: 6.
    On one side of the profile body 2 is closed by a transparent cover 4. The transparent cover 4 forms the light exit surface of the lamp. In the illustrated embodiment, the transparent cover 4 is made of a plastic, e.g. PMMA, formed. The plastic is clear. According to alternative embodiments, the transparent cover 4 may also be frosted or have refractive elements to produce a partially scattered light.
    The transparent cover 4 is attached by means of a latching connection in the profile body 2. On one longitudinal side of the transparent cover 4, this is inserted over a projection 6 of the profile body. On the opposite longitudinal side of the transparent cover 4 is engaged in the profile body 2. In the region of the latching connection 8, the profile is flexible, e.g. from the same material as the rest of the profile body, but with a lower material thickness or of a flexible plastic.
    Between the profile body 2 and the cover 4, two cavities are formed. The two cavities are separated by an intermediate wall 3 of the profile body 2 from each other. The intermediate wall 3 serves on the one hand to bear the transparent cover 4. Furthermore, it contributes to the stability of the profile body (in particular to the bending stability in the longitudinal direction).
    In one of the two cavities 5, a reflector 10 is inserted. Furthermore, a board 14 is glued on which a number of about 150 LEDs 12 are connected. The row of LEDs 12 extends in the longitudinal direction of the lamp. According to the preferred embodiment, a reflector is provided for all the LEDs 12. In addition, the LEDs have no reflectors or other refractive elements individually associated with them. The electrical contacting of the LEDs or the circuit board 14 via connection cables, which are not shown in the figure 1.
    Preferably, low power LEDs (e.g., less than 100 mW) are used. The LEDs have the advantage that they have a very long life of up to 50,000 hours. Furthermore, they are insensitive to mechanical shocks, as they occur in a refrigerator, and insensitive to chemical influences and moisture. The color of the LEDs can be selected according to the goods to be illuminated. Preferably, white LEDs are used.
    The reflector 10 is located on one side of the locking connection 8 between the profile body 2 and the cover 4 at. On the opposite side of the reflector 10, the board 14 is glued for the LEDs 12.
    The outer cross section of the profile body 2 is formed approximately lens-shaped, resulting in particular advantages of the lamp in the application in a refrigerator. These will be explained with reference to Figure 2, which shows the lamp mounted in a shelf in a refrigerated display.
    The light is fixed at its end faces (not shown in the cross section shown) by means of fastening devices on a shelf 16 below a baffle 18.
    The attachment is such that the lamp is spaced transversely to the longitudinal direction in all directions to the shelf 16 and its attachments in a cross section. In particular, a gap between the profile body 2 and an air guide plate 18 of the Re-
    权利要求:
    Claims (12)
    [1]
    Austrian Patent Office AT 12 909 Ul 2013-01-15 galbodens 16 provided. In Figure 2, the air flow is shown by arrows, which adjusts by convection in the refrigerated display. The air flows around the lamp from all sides, with the particular cross-sectional shape of the profile body 2 favors the air flow. In particular, no turbulences are formed. The air flow is almost laminar. The attachment of the lamp in the refrigerator is designed so that the lamp can be freely positioned by a rotation angle along the longitudinal axis of the housing. For example, several plug positions are provided on the end walls of the lamp body in order to mount the lamp at different angles with respect to the shelf 16 can. According to an alternative embodiment fastening devices are provided with a joint, which allow pivoting of the lamp in the assembled state. As a result, the luminaire for influencing the air flow around the profile body can be set approximately parallel to an air guide plate 18, which is attached to the shelf 16. By the air flow around the profile body 2, the lamp is cooled. The heat generated by the LEDs 12 is released via the profile body 2 to the air flow. An advantage of the laminar air flow is also that caused by turbulence dust deposits occur at certain points in the refrigerator or on the goods. Numerous modifications of the previously described embodiment of the luminaire are possible without departing from the appended claims. For example, the cross section of the profile body 2 need not be symmetrical. Preferred shapes are also wing shapes. This has on the narrow side facing the air flow a rounding similar to that in Figures 1 and 2, while on the side facing away from the air flow, a narrow edge is formed. REFERENCE LIST: 2 profile body 3 intermediate wall 4 transparent cover 5 interior 6 projection 8 locking connection 10 reflector 12 LED 14 board 16 cooling shelf bottom 18 air guide plate Requirements 1. Luminaire for installation in a refrigerated shelf, a refrigerated counter or a freezer, the lamp comprising: a housing an elongate profile body (2) which is approximately lenticular or wing-shaped in cross-section perpendicular to the longitudinal extent, the profile body (2) defining at least one interior (5) of the housing, in which one of the plurality of rows of LEDs (12) in the longitudinal direction of the profile body (2) are arranged opposite a light exit opening.
    [2]
    2. Lamp according to claim 1, wherein the ratio between the maximum height and width of the cross section of the profile body (2) is less than 1: 3, preferably less than 1: 5 ,.
    [3]
    3. Lamp according to one of the preceding claims, wherein the profile body (2) is at least partially made of metal, in particular aluminum. 4/7 Austrian Patent Office AT12 909U1 2013-01-15
    [4]
    4. Luminaire according to one of the preceding claims, wherein all outer surfaces of the profile body (2) are rounded in said cross-section.
    [5]
    5. Lamp according to one of the preceding claims, wherein the light exit surface of the housing by a transparent cover (4) is closed, which forms part of the lenticular or airfoil-shaped profile body (2).
    [6]
    6. Lamp according to claim 5, wherein the cover (4) in the profile body (2) is latched.
    [7]
    7. Lamp according to one of the preceding claims, wherein the LEDs (12) are mounted in thermal contact with the profile body (2).
    [8]
    8. Luminaire according to one of the preceding claims, wherein the LEDs (12) on one or more boards (14) are arranged, which is brought into thermal contact with the profile body (2) or are.
    [9]
    9. Luminaire according to one of the preceding claims, wherein a number of LEDs (12) has at least 25 and / or at most 250 LEDs.
    [10]
    10. Luminaire according to one of the preceding claims, wherein the housing has front attachment means, in particular, allow a positioning of the housing at different angles or pivoting of the housing about the longitudinal axis of the housing or an axis parallel thereto.
    [11]
    11. Luminaire according to one of the preceding claims in combination with a louver, in particular an air baffle (18), wherein the louver relative to the profile body (2) is arranged such that the louver performs an air flow over the profile body (2), in particular in one Gap between a curved surface of the profile body (2) and the louver leads.
    [12]
    12. paving (16) of a refrigerated shelf, a refrigerated counter or a freezer, in which a lamp is installed according to one of the preceding claims, and around the profile body (2) space for air flow is provided by preferably convection or by a fan. For this 2 sheets drawings 5/7
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    DE202009017408U1|2010-03-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE9309085U1|1993-06-18|1993-08-05|Regio Ladenbau Gmbh, 25355 Barmstedt, De|
    US20080106892A1|2006-09-21|2008-05-08|Griffiths Terence P|Light fixture|
    EP2002762A1|2007-06-11|2008-12-17|Sanyo Electric Co., Ltd.|Showcase|
    DE202010011614U1|2010-08-20|2010-10-21|Siteco Beleuchtungstechnik Gmbh|Lighting device for a refrigerated cabinet|
    DE102013005988A1|2013-04-08|2014-10-09|Emz-Hanauer Gmbh & Co. Kgaa|Electric home appliance with lighted interior|
    DE202018002737U1|2018-06-08|2019-09-10|Markus Rieck|Electrically operated lighting system for fences, gabions, railings and similar applications|
    DE102018005481A1|2018-07-11|2020-01-16|Emz-Hanauer Gmbh & Co. Kgaa|Light bar for installation in an electrical household appliance, floor assembly and cooling device with such a floor assembly|
    EP3861892A1|2020-02-04|2021-08-11|Lumitech Patentverwertung GmbH|Luminaire for illuminating shelving and shelving with a luminaire|
    法律状态:
    2020-12-15| PC| Change of the owner|Owner name: SITECO GMBH, DE Effective date: 20201028 |
    2021-01-15| MK07| Expiry|Effective date: 20201130 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202009016969|2009-12-16|
    DE202009017408U|DE202009017408U1|2009-12-16|2009-12-23|LED lamp cooling rack|
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