CN114165745A - Rotatable tunnel lighting module and tunnel lighting lamp - Google Patents
Rotatable tunnel lighting module and tunnel lighting lamp Download PDFInfo
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- CN114165745A CN114165745A CN202111300608.2A CN202111300608A CN114165745A CN 114165745 A CN114165745 A CN 114165745A CN 202111300608 A CN202111300608 A CN 202111300608A CN 114165745 A CN114165745 A CN 114165745A
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- heat dissipation
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 10
- 238000012546 transfer Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- 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
-
- 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
-
- 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
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- 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
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- 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
- F21W2131/10—Outdoor lighting
- F21W2131/101—Outdoor lighting of tunnels or the like, e.g. under bridges
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a rotatable tunnel lighting module and a tunnel lighting lamp, which comprise a mounting shell, at least one light source and a heat dissipation assembly, wherein the at least one light source and the heat dissipation assembly are oppositely arranged at two ends of the mounting shell, a first pivot shaft mounting hole is formed in a first side surface of the mounting shell, the heat dissipation assembly comprises a base for absorbing heat generated by the light source and a heat dissipation frame for dissipating the heat absorbed by the base to the outside of the mounting shell, a series of fins which are parallel to each other are protruded out of the base of the heat dissipation frame, and the size of each fin is reduced in a specific mode along the direction far away from the central fin by taking the central fin in the series of fins as a reference. The tunnel lighting module is of a rotatable structure, and the whole volume of the lighting module is reduced through the heat dissipation assembly, so that the lighting module can pivot in a small space in the tunnel lighting lamp.
Description
Technical Field
The invention relates to the technical field of tunnel lamps, in particular to a rotatable tunnel lighting module and a tunnel lighting lamp.
Background
Due to the special environment of the tunnel, the tunnel lighting quality is reduced due to much dust. The lighting is wrapped by the closed shell, so that the service life is prolonged, and the working difficulty of workers is reduced. The existing track tunnel lighting lamps are mainly light sources consisting of light emitting diodes or LEDs, because they consume low energy, have small overall dimensions and achieve high quality lighting. However, a disadvantage of light-emitting diodes is that they generate heat when they are lit, which can affect their operation.
In fact, the more the temperature of the light emitting diode rises, the more its luminous flux drops. The number of light emitting diodes and the power required for their operation are high if the lighting module is designed to generate a light beam requiring a high light intensity. Since the lighting module is subject to a large temperature rise during use, it is necessary to reduce its temperature to prevent any damage due to overheating. In order to effectively cool these lighting modules provided with light emitting diodes, heat dissipation assemblies have been provided in the modules in the prior art. The presence of a heat dissipating portion, although capable of optimizing the heat dissipation, has the drawback of increasing the overall volume of the lighting module, thus making integration into a lamp difficult. This integration problem is further accentuated when one or more lighting modules have to be mounted in the lamp in order to be able to illuminate different parts of the same scene.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a rotatable tunnel lighting module, which has a rotatable structure and reduces the overall volume of the lighting module through a heat dissipation assembly, so as to be pivoted in a small space in the tunnel lighting lamp.
The invention adopts the following technical scheme:
the utility model provides a rotatable tunnel lighting module, includes the installation casing, sets up at least one light source and the radiator unit in installation casing both ends relatively, be equipped with first pivot axle mounting hole on the first side on the installation casing, radiator unit is including the base that is used for absorbing the heat that the light source produced and the heat dissipation frame that is used for giving off the heat that the base absorbed to the installation casing outside, the heat dissipation frame includes a series of parallel fins of protrusion base, and the size of each fin uses the central fin that is arranged in a series of fins as the benchmark, reduces with specific mode along the direction of keeping away from central fin.
Preferably, the first side face is taken as a front view direction, the tops of all the fins are arranged in an arc shape, and the circle center of a circumscribed circle of the tops of all the fins is superposed with the axis of the first pivot shaft mounting hole.
Preferably, an inclined part and a straight part are arranged between the top and the bottom of the fin, the straight part is connected to the base, and the inclined part is arranged above the straight part.
Preferably, the height of the fins at the outermost side is 30% to 60% of the height of the central fin; the thickness of the bottom of the fin is gradually reduced from the center to the periphery, and heat transmission is accelerated.
Preferably, a second pivot shaft mounting hole is provided on a second side surface adjacent to the first side surface.
Preferably, the diameter of the circular structure on the central fin is the same as the diameter of the circumscribed circle at the top of the fin when the second side face is taken as the front view direction.
Preferably, the light source is built into the mounting housing.
A tunnel lighting lamp comprises a transparent shell, a tunnel lighting module is installed in the transparent shell, and the tunnel lighting module is matched with a first pivot shaft or a second pivot shaft in the transparent shell in a rotating mode through a first pivot shaft installation hole or a second pivot shaft installation hole.
Preferably, the circumscribed circle of the top of the fin does not extend beyond the planar end of the transparent envelope.
Compared with the prior art, the invention has the following advantages: the invention provides a rotatable tunnel lighting module, which is of a rotatable structure, and the whole volume of the lighting module is reduced through a heat dissipation assembly so as to be convenient for pivoting in a small space in a tunnel lighting lamp. Meanwhile, the tunnel lighting module can have at least two using modes through the first pivot shaft and the second pivot shaft.
Drawings
Fig. 1 is a schematic structural diagram of a tunnel lighting module.
Fig. 2 is a top view of the tunnel lighting module.
Fig. 3 is a schematic rotation diagram of fig. 2.
Fig. 4 is a side view of another use state of the tunnel lighting module.
Fig. 5 is a schematic rotation diagram of fig. 4.
Fig. 6 is a rear view of the tunnel lighting module shown in fig. 4.
Fig. 7 is a schematic structural view of embodiment 2.
Fig. 8 is a schematic thermal interface of the fin of example 2.
Fig. 9 is a histogram of the thermal resistance of example 2.
In the figure, a mounting shell 1, a first side surface 1-1, a second side surface 1-2, a light source 2, a heat dissipation component 3, a base 3-1, fins 3-2, a transparent shell 4 and a plane end part 4-1.
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 to 6, a rotatable tunnel lighting module comprises a mounting housing 1, at least one light source 2 and a heat dissipation assembly 3, wherein the light source 2 and the heat dissipation assembly 3 are oppositely arranged at two ends of the mounting housing 1, a first pivot shaft mounting hole is arranged on a first side surface 1-1 of the mounting housing 1, the heat dissipation assembly 3 comprises a base 3-1 for absorbing heat generated by the light source and a heat dissipation frame for dissipating the heat absorbed by the base 3-1 to the outside of the mounting housing 1, the heat dissipation frame comprises a series of fins 3-2 parallel to each other and protruding out of the base 3-1, and the size of each fin 3-2 is reduced in a specific manner in a direction away from a central fin in the series of fins by taking the central fin as a reference. The invention provides a rotatable tunnel lighting module, which is of a rotatable structure, and the whole volume of the lighting module is reduced through a heat dissipation assembly so as to be convenient for pivoting in a small space in a tunnel lighting lamp.
As shown in fig. 2-3, with the first side surface 1-1 as a front view direction, the tops of all the fins are arranged in an arc shape and sequentially reduced, the center of a circumscribed circle at the top of the fins is overlapped with the axis of the first pivot shaft mounting hole, and the axis of the first pivot shaft mounting hole is the intersection of two central lines in the figure.
An inclined part and a straight part are arranged between the top and the bottom of the fin 3-2, the straight part is connected to the base 3-1, and the inclined part is arranged above the straight part. The straight part is vertically arranged on the heat dissipation frame base 3-1, and specifically, the straight part can be fixedly arranged on the heat dissipation frame base 3-1 through bonding, welding or other manufacturing processes.
The length of each fin 3-2 decreases from its centre of symmetry towards both ends to facilitate pivoting of the lighting module within the transparent housing of the tunnel lighting lamp. The gradual reduction of the length of the fins 3-2 advantageously allows the rotation of the lighting module without hitting the wall behind the lighting module when the lighting module is mounted in the transparent housing of the tunnel lighting lamp so as to be pivotable about the first pivot axis. Thus, the present invention can significantly reduce the required size of the transparent housing.
Preferably, the central fin is two or three fins 3-2 of the same length. The height of the fin at the outermost side is 30% to 60% of the height of the central fin. The thickness of the bottom of the fin 3-2 is gradually reduced from the center to the periphery, and heat transmission is accelerated.
All the fins 3-2 can be arranged on the same substrate and fixedly arranged in the base 3-1; or all the fins 3-2 can be integrally formed with the base 3-1, and the perpendicularity between the fins 3-2 and the base 3-1 can be improved by the two modes.
The two adjacent fins 3-2 are arranged in parallel, and the distance between the two adjacent fins 3-2 is between 4mm and 8mm, preferably between 6mm and 8mm, and particularly for a lighting module without a fan, the heat dissipation effect can be effectively improved.
The top of the fin 3-2 is in a circular arc structure with a smaller diameter, and all the fins 3-2 are in a stroke corrugated structure which can be formed by the same rolled plate or made of a single-piece structure.
The fin tops form a circumcircle structure, the rotation axis of which coincides with the first pivot axis, and in any pivoted position, the fins 3-2 do not protrude beyond the theoretical envelope of the circumcircle, and then the transparent casing can be constructed as close as possible to the theoretical envelope.
The light source 2 is arranged in the installation shell 1, and can be used for dust prevention.
As shown in fig. 4-5, in order to optimize the overall size of the transparent housing, the lighting module is configured to rotate around the axis of the second pivot shaft, and a second pivot shaft mounting hole is provided on the second side surface 1-2 adjacent to the first side surface 1-1, and the axis of the second pivot shaft is the intersection of two center lines.
And taking the second side surface 1-2 as a front view direction, wherein the diameter of the circular structure on the central fin is the same as the diameter of the circumscribed circle at the top of the fin when the first side surface 1-1 is taken as the front view direction.
All the fins 3-2 are arranged to be gradually reduced outwards with reference to the central fin, and specifically, the width and the length are reduced.
A tunnel lighting lamp comprises a transparent shell 4, a tunnel lighting module is installed in the transparent shell, and the tunnel lighting module is matched with a first pivot shaft or a second pivot shaft in the transparent shell in a rotating mode through a first pivot shaft installation hole or a second pivot shaft installation hole.
The circumcircle of the top of the fins does not extend beyond the planar end 4-1 of the transparent housing, i.e. there is no risk of the fins hitting the wall of the installation site of the tunnel lighting lamp when rotated.
When the lighting module is mounted in a lamp for motor vehicles so as to be able to rotate about the axis of the second pivot axis, the transparent casing is provided with a cut-out portion forming a planar end portion, enabling a significant reduction in the required dimensions of the transparent casing, which has a planar end portion forming a plane, thereby reducing the overall dimensions of the transparent casing while allowing the rotation of the internal lighting module.
As shown in fig. 6, the fin, one end edge of which is cut at right angles, may be made integral with the base plate and form an integral assembly with the base, i.e. form an integral part produced in a single manufacturing operation, or be produced separately from the mounting housing 1 and subsequently mounted on the mounting housing 1.
Example 2
As shown in fig. 7, embodiment 2 is different from embodiment 1 in that the interval between adjacent fins 3-2 is twice the thickness of the fin 3-2.
Increasing the surface area of the fins 3-2 can improve the heat dissipation performance, but the influence of the distance between the fins 3-2 on the heat dissipation effect is also important, when the gap between the fins is small to a certain extent, the boundary surface of natural convection can be influenced, once the boundary surfaces of the plate walls of the adjacent fins are converged, the air flow rate of the gap between the fins is sharply reduced, and the convection effect is also sharply reduced.
The size of the fin gap has a significant effect on the rate of heat dissipation, commonly referred to as the heat transfer coefficient. Multiplying the surface temperature Ts (C) minus the ambient temperature Ta (C) by the surface area, as shown in equation 1
As(m2) And coefficient of heat transfer
The heat generation source power q (w) can be obtained. According to the formula (1), the surface area and the heat transfer coefficient influence the surface temperature of the radiating fin, so that under the condition of natural heat dissipation, the gaps between the fins 3-2 need to take account of both the heat dissipation area and the convection efficiency.
Q＝hcAs(Ts-Ta) (1)
The smaller the spacing between fins 3-2, the lower the heat transfer rate. At some point, closer spacing between fins reduces heat transfer, primarily due to the thicker thermal interface. The thermal interface is generally described as the region near the surface of fin 3-2 where the temperature is higher than ambient temperature. When air enters the space between the fins and the airflow is deep along the length direction of the fins, the thermal boundary surface is thinnest. The smaller the fin gap spacing, the faster the thermal interface bonds with the adjacent fin. This creates a hotter air region and reduces the heat transfer coefficient from the surface of the heat sink to the fin gap air. The parameters of the spacing between the fins 3-2 and the surface area of the heat dissipation frame are critical to obtain the lowest temperature of the heat dissipation assembly and the lowest temperature of the cold source.
Fig. 8-9 illustrate the case where the heat sink assembly assumes a fin gap of twice the fin thickness. In the case, the length and width of the heat source are both 25.4mm, and the heat quantity emitted by the heat source is 20W. Wherein, when the number of the radiating fins is 16, the thermal resistance of the radiator is higher, and when the number of the radiating fins is 8, the thermal resistance of the radiator is the lowest. Under the heat source condition, the heat dissipation effect of 8 fins is best, and the fin gap is twice as thick. According to experiments, in the tunnel lighting module, the interval between the fins is about twice of the thickness of the fins, so that the heat spreading capacity and the natural convection state are ensured to be optimal.
The above is only a preferred embodiment of the present invention, and the scope of the present invention is defined by the appended claims, and several modifications and amendments made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as the scope of the present invention.
Claims (10)
1. A rotatable tunnel lighting module comprises a mounting shell (1), at least one light source (2) and a heat dissipation assembly (3), wherein the light source (2) and the heat dissipation assembly (3) are oppositely arranged at two ends of the mounting shell (1), a first pivot shaft mounting hole is formed in a first side face (1-1) on the mounting shell (1), the heat dissipation assembly (3) comprises a base (3-1) used for absorbing heat generated by the light source and a heat dissipation frame used for dissipating the heat absorbed by the base (3-1) to the outside of the mounting shell (1), the heat dissipation frame comprises a series of parallel fins (3-2) protruding out of the base (3-1), and the size of each fin (3-2) is reduced in a specific mode in a direction away from the central fin by taking the central fin in the series of fins as a reference.
2. A rotatable tunnel lighting module according to claim 1 wherein the spacing between adjacent fins (3-2) is twice the thickness of the fins (3-2).
3. A rotatable tunnel lighting module according to claim 1 wherein all the fin tops are arranged in an arc shape with the first side (1-1) as a front view, and the center of the circle circumscribed to the tops coincides with the axis of the first pivot shaft mounting hole.
4. A rotatable tunnel lighting module according to claim 1, wherein between the top and bottom of the fins (3-2) are a slanted portion and a straight portion, the straight portion being connected to the base (3-1), the slanted portion being arranged above the straight portion.
5. A rotatable tunnel lighting module according to claim 1 wherein the height of the outermost fins is 30% to 60% of the height of the central fins; the thickness of the bottom of the fin (3-2) is gradually reduced from the center to the periphery, and heat transmission is accelerated.
6. A rotatable tunnel lighting module according to claim 3 wherein a second pivot axis mounting hole is provided on a second side (1-2) adjacent the first side (1-1).
7. A rotatable tunnel lighting module according to claim 6, wherein the diameter of the circular formation on the central fin is the same as the diameter of the circumscribed circle at the top of the fin when viewed from the first side (1-1), with the second side (1-2) as viewed from the front.
8. A rotatable tunnel lighting module according to claim 1 wherein the light source (2) is built into the mounting housing (1).
9. A tunnel illumination lamp comprising a transparent housing in which the tunnel illumination module according to any one of claims 1 to 8 is mounted, the tunnel illumination module being rotatably fitted with the first pivot shaft or the second pivot shaft through the first pivot shaft mounting hole or the second pivot shaft mounting hole in the transparent housing.
10. The tunnel lighting lamp according to claim 9, wherein the circumscribed circle of the top of the fin does not exceed the planar end of the transparent housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111300608.2A CN114165745A (en) | 2021-11-04 | 2021-11-04 | Rotatable tunnel lighting module and tunnel lighting lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111300608.2A CN114165745A (en) | 2021-11-04 | 2021-11-04 | Rotatable tunnel lighting module and tunnel lighting lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114165745A true CN114165745A (en) | 2022-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111300608.2A Pending CN114165745A (en) | 2021-11-04 | 2021-11-04 | Rotatable tunnel lighting module and tunnel lighting lamp |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020070750A (en) * | 2001-03-03 | 2002-09-11 | 잘만테크 주식회사 | Heat sink device |
| KR100430076B1 (en) * | 2003-11-03 | 2004-05-04 | 동도조명(주) | Tunnel lighting |
| CN101922693A (en) * | 2009-06-12 | 2010-12-22 | 富准精密工业(深圳)有限公司 | Luminaire |
| KR20110102746A (en) * | 2010-03-11 | 2011-09-19 | 에이치와이엔지니어링(주) | High power led radiator assembly |
| CN202733642U (en) * | 2012-07-16 | 2013-02-13 | 珠海市珈玛灯具制造有限公司 | LED (Light Emitting Diode) tunnel lamp |
| CN203375342U (en) * | 2013-06-01 | 2014-01-01 | 深圳市浩丰五金塑胶有限公司 | Long-distance spotlight with double lenses |
| CN108019627A (en) * | 2016-11-04 | 2018-05-11 | 马文波 | A kind of high-powered LED lamp of high heat dispersion |
-
2021
- 2021-11-04 CN CN202111300608.2A patent/CN114165745A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020070750A (en) * | 2001-03-03 | 2002-09-11 | 잘만테크 주식회사 | Heat sink device |
| KR100430076B1 (en) * | 2003-11-03 | 2004-05-04 | 동도조명(주) | Tunnel lighting |
| CN101922693A (en) * | 2009-06-12 | 2010-12-22 | 富准精密工业(深圳)有限公司 | Luminaire |
| KR20110102746A (en) * | 2010-03-11 | 2011-09-19 | 에이치와이엔지니어링(주) | High power led radiator assembly |
| CN202733642U (en) * | 2012-07-16 | 2013-02-13 | 珠海市珈玛灯具制造有限公司 | LED (Light Emitting Diode) tunnel lamp |
| CN203375342U (en) * | 2013-06-01 | 2014-01-01 | 深圳市浩丰五金塑胶有限公司 | Long-distance spotlight with double lenses |
| CN108019627A (en) * | 2016-11-04 | 2018-05-11 | 马文波 | A kind of high-powered LED lamp of high heat dispersion |
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