CN114992553A - Unpowered air-cooled lamp - Google Patents
Unpowered air-cooled lamp Download PDFInfo
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- CN114992553A CN114992553A CN202210688727.8A CN202210688727A CN114992553A CN 114992553 A CN114992553 A CN 114992553A CN 202210688727 A CN202210688727 A CN 202210688727A CN 114992553 A CN114992553 A CN 114992553A
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 69
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 230000003287 optical effect Effects 0.000 claims description 19
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000004313 glare Effects 0.000 description 7
- 241001465382 Physalis alkekengi Species 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002699 waste material Substances 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
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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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
- F21V23/002—Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
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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
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/506—Cooling arrangements characterised by the adaptation for cooling of specific components of globes, bowls or cover glasses
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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
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/508—Cooling arrangements characterised by the adaptation for cooling of specific components of electrical circuits
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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
- F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
- F21V29/65—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air the gas flowing in a closed circuit
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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
- F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
- F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
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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
- F21V7/00—Reflectors for light sources
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- 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]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention discloses an unpowered air-cooled lamp in the technical field of lamp heat dissipation, which comprises a heat dissipation shell, wherein the front end of the heat dissipation shell is provided with an air inlet, and the rear end of the heat dissipation shell is provided with an air outlet; the electric module is arranged at the rear end of the radiating shell and is opposite to the exhaust port; the light-transmitting cover is arranged in the inner cavity of the heat dissipation shell, is communicated with the air inlet and the air outlet and is used for carrying out air cooling on the electrical module. The integrated electric module is arranged at the rear end of the radiating shell in an air cooling mode, the light-transmitting cover is arranged in the radiating shell and provided with the airflow channel opposite to the electric module, and the electric module can be subjected to unpowered air cooling by utilizing the flow of air in the airflow channel, so that the temperature of the electric module is reduced, the reliability of the lamp is improved, and the service life of the lamp is prolonged.
Description
Technical Field
The invention relates to the technical field of lamp heat dissipation, in particular to an unpowered air-cooled lamp.
Background
The projector is a lamp that specifies that the illuminance on the illuminated surface is higher than the surrounding environment, and is also called a spotlight. As shown in fig. 9, the projector includes a light emitting mirror 10, a tapered lamp housing 20, an LED lamp 30 and a power supply 40, the light emitting mirror 10 and the power supply 40 are disposed at both ends of the tapered lamp housing 20 and form a closed optical cavity, and the LED lamp 30 is installed in the closed optical cavity and electrically connected to the power supply 40.
In the in-service use process, the projecting lamp is inside can produce a large amount of heats, if untimely with this part heat from the inside effluvium of projecting lamp, can lead to the projecting lamp temperature to rise, long-term work makes LED lamp and power break down easily in high temperature environment to influence the availability factor of projecting lamp, reduce the life of projecting lamp.
In view of the heat dissipation problem of the projection lamp, there are two heat dissipation methods commonly adopted by those skilled in the art, the first is water cooling, a coolant flow channel is arranged inside the projection lamp, and the heat inside the projection lamp is taken out by utilizing the flow of the coolant, so as to reduce the temperature of the projection lamp, for example, a patent document with the publication number of CN213237133U discloses an LED projection lamp with good heat dissipation effect; however, the water cooling method requires a separate cooling liquid supply system, which not only results in a complicated structure of the projector and high production cost, but also causes a problem of leakage of the cooling liquid. The second is air cooling, in which a heat dissipation fan is installed inside the projector, and the heat inside the projector is taken out by the air blown from the heat dissipation fan, thereby reducing the temperature of the projector lamp, for example, patent document No. CN208983136U discloses a high heat dissipation LED projector; however, in the air cooling method using the cooling fan, the cooling fan is an electrical appliance and a heat source, which not only increases the power consumption, but also increases the production cost.
Disclosure of Invention
In view of this, the present invention provides an unpowered air-cooled lamp to solve the technical problems of complex structure and high production cost of the existing projector with heat dissipation function.
The technical scheme adopted by the invention is as follows: an unpowered air cooled light fixture comprising:
the front end of the radiating shell is provided with an air inlet, and the rear end of the radiating shell is provided with an air outlet;
the electric module is arranged at the rear end of the heat dissipation shell and is opposite to the air outlet;
and the light transmitting cover is arranged in the inner cavity of the heat dissipation shell, is provided with an airflow channel communicated with the air inlet and the air outlet and used for carrying out air cooling on the electrical module.
Preferably, the light-transmitting cover comprises a cone light-emitting portion for enlarging the light-emitting surface, a large-diameter end of the cone light-emitting portion is connected with the front end of the heat-dissipating shell, a small-diameter end of the cone light-emitting portion is connected with the rear end of the heat-dissipating shell, and the cone light-emitting portion is coaxially provided with the circular truncated cone-shaped air flow channel.
Preferably, the included angle between the generatrix of the cone-shaped tube light outlet part and the axis is 30-60 degrees.
Preferably, an included angle between a generatrix of the cone-shaped tube light outlet part and an axis is 45 degrees.
Preferably, the unpowered air-cooled lamp further comprises a light-emitting panel electrically connected with the electrical module, and the light-emitting panel is arranged in the closed optical cavity between the heat dissipation shell and the light-transmitting cover around the axis of the cone light-emitting part.
Preferably, the heat dissipation casing comprises a cylindrical body part and an end plate part, wherein the end plate part is fixedly arranged at the rear end of the cylindrical body part and is coaxially provided with the exhaust port; and a reflecting surface for reflecting the light emitted by the light emitting panel to a preset direction is arranged on the inner wall of the barrel body.
Preferably, the light-emitting panel includes a plurality of LED modules and wires, and the LED modules are circumferentially spaced on the end plate portion and electrically connected to the electric module through the wires penetrating the end plate portion.
Preferably, the heat dissipation shell further comprises heat dissipation fins, the heat dissipation fins are uniformly distributed on one side, away from the barrel body part, of the end plate part along the radial direction, and the axial size of each heat dissipation fin is smaller than that of the closed optical cavity.
Preferably, the light reflecting surface is an arc surface for converging light emitted by the light emitting panel.
Preferably, a plurality of first radial clamping grooves are uniformly distributed on the circumference of the front end of the barrel body part, first elastic clamping blocks capable of radially stretching are uniformly distributed on the circumference of the large-diameter end of the cone barrel light-emitting part, and the first elastic clamping blocks are clamped in the first radial clamping grooves; a plurality of second radial clamping grooves are uniformly distributed on the circumference of the end plate part, radially telescopic second elastic clamping blocks are uniformly distributed on the circumference of the small-diameter end of the light outlet part of the conical cylinder, and the second elastic clamping blocks are clamped in the second radial clamping grooves.
The invention has the beneficial effects that:
1. the integrated electric module is arranged at the rear end of the radiating shell in an air cooling mode, the light-transmitting cover is arranged in the radiating shell and provided with the airflow channel opposite to the electric module, and the electric module can be subjected to unpowered air cooling by utilizing the flow of air in the airflow channel, so that the temperature of the electric module is reduced, the reliability of the lamp is improved, and the service life of the lamp is prolonged.
2. According to the invention, the light-transmitting cover is arranged in the heat dissipation shell, the conical airflow channel is arranged in the light-transmitting cover, and the radial dimension of the end, far away from the electric module, of the airflow channel is larger than that of the end, close to the electric module, of the airflow channel, so that the convection resistance of air in the airflow channel is reduced, the air can smoothly flow in the airflow channel, and the heat dissipation effect of the electric module is improved.
3. Compared with a planar light-emitting mirror, the conical light-transmitting cover has a larger light-emitting surface under the condition of equal radial size, so that the surface brightness of the light-emitting surface is reduced, and the glare problem of the light-emitting surface is indirectly improved.
4. According to the invention, the inner wall of the radiating shell is provided with the reflecting surface, so that the light emitting path of the LED lamp can be increased through the reflection of light rays, the controllable light distribution of the lamp is formed, and the problem of glare of the lamp is effectively reduced.
5. The light-emitting panel is arranged in the closed optical cavity in a surrounding mode, so that the influence of ash and rainwater on the reflecting surface on the heat-radiating shell can be reduced, the brightness of the light-emitting surface is ensured, and the service life of the projection lamp is prolonged.
6. The light-emitting panel is formed by connecting a plurality of LED modules and the wires, and is electrically connected with the integrated electric module through the wires, so that the material utilization rate can be improved and the production cost can be reduced compared with a circular lamp.
Drawings
FIG. 1 is a schematic structural view of a non-powered air-cooled lamp according to the present invention;
FIG. 2 is an isometric view of the unpowered air-cooled lamp of the present invention;
FIG. 3 is a cut-away perspective view of the unpowered air-cooled lamp of the present invention;
FIG. 4 is a front view of the unpowered forced air cooled lamp of the present invention;
FIG. 5 is a schematic view of the connection of the heat-dissipating casing to the light-emitting panel;
FIG. 6 is a perspective view of a heat dissipation housing;
FIG. 7 is a perspective view of a light transmissive cover;
FIG. 8 is a schematic view of a light transmissive cover;
fig. 9 is a schematic view of the projector;
the reference numbers in the figures illustrate:
10. a light emitting mirror; 20. a conical lampshade; 30. an LED lamp; 40. a power source;
100. a heat dissipation housing;
110. a barrel portion; 111. a light-reflecting surface; 112. a first radial slot; 120. an end plate portion; 121. a second radial slot; 130. a heat sink;
200. an electrical module;
300. a light-transmitting cover;
310. a cone light-out part; 320. a first connection portion; 330. a first elastic clamping block; 340. a second connecting portion; 350. a second elastic clamping block;
400. a light emitting panel;
410. an LED module; 420. a wire;
500. a U-shaped bracket;
600. a closed optical cavity;
700. an air flow channel.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the embodiment, as shown in fig. 1 to 8, an unpowered air cooling lamp can realize unpowered air cooling of the lamp by utilizing the flow of air; this unpowered forced air cooling lamps and lanterns include:
a heat dissipation case 100, the front end of the heat dissipation case 100 is provided with an air inlet, and the rear end is provided with an air outlet;
an electric module 200, the electric module 200 is arranged at the rear end of the heat dissipation shell 100 and is opposite to the air outlet;
a light-transmitting cover 300, the light-transmitting cover 300 is disposed in the inner cavity of the heat dissipation housing 100, and the light-transmitting cover 300 is provided with an airflow channel 700 which is communicated with the air inlet and the air outlet and used for air-cooling the electrical module 200.
This application adopts the mode of forced air cooling, and the electric module 200 after will integrating sets up in heat dissipation shell 100 rear end to be equipped with printing opacity cover 300 in the inside of heat dissipation shell 100, printing opacity cover 300 has the airflow channel 700 just right with electric module 200, and the flow of usable air in airflow channel 700 carries out unpowered forced air cooling to electric module 200, thereby reduces electric module 200's temperature, improves the reliability of lamps and lanterns, and the life of extension lamps and lanterns.
It should be noted that the electrical module 200 in this embodiment includes all the electrical and/or heat-generating components inside the lamp, such as a power supply, a ballast, a capacitor, an igniter, and the like, except the light-emitting panel 400.
In an embodiment, as shown in fig. 1, 7 and 8, the light-transmitting cover 300 includes a cone light-emitting portion 310 for enlarging a light-emitting surface, the cone light-emitting portion 310 is in a circular truncated cone shape with a large end and a small end, the large diameter end of the cone light-emitting portion 310 is fixedly connected with the front end of the heat-dissipating housing 100, and the small diameter end is fixedly connected with the rear end of the heat-dissipating housing 100; meanwhile, the cone-shaped light-emitting portion 310 is hollow to form an air flow channel 700 communicating the air inlet and the air outlet, and the wall thickness of each part of the cone-shaped light-emitting portion 310 is the same, so that the air flow channel 700 is coaxially arranged in the cone-shaped light-emitting portion 310 and is in a circular truncated cone shape, and one end of the air flow channel 700 close to the electrical module 200 is a small-diameter end. So set up because: in the embodiment, the unpowered air cooling mode is adopted, the light-transmitting cover 300 is tapered, the air flow channel 700 is in a circular truncated cone shape with a large end and a small end, and the small-diameter end of the air flow channel 700 is arranged close to the electrical module 200, so that the air convection resistance in the air flow channel 700 can be reduced, the air can flow in the air flow channel 700 more smoothly, and the air cooling effect of the electrical module 200 is improved. Meanwhile, the light-transmitting cover 300 is designed in a conical shape, and compared with the planar light-emitting mirror 10, under the condition of equal radial size, the conical light-transmitting cover 300 has a larger light-emitting surface, so that the surface brightness of the light-emitting surface is reduced, and the glare problem of the light-emitting surface is indirectly improved.
Preferably, the included angles between the generatrix of the cone-shaped light outlet portion 310 and the axis are 30 °, 40 °, 50 ° and 60 °. This is so set up because: when the included angle between the generatrix of the cone-shaped light-emitting portion 310 and the axis is smaller than 30 °, the air convection resistance in the airflow channel 700 is large, which causes unsmooth flow of air in the airflow channel 700, and thus the cold shortage effect of the electrical module 200 is poor; when the included angle between the generatrix of the cone-shaped light outlet portion 310 and the axis is greater than 60 °, the light emitting surface of the light-transmitting cover 300 is too small, which is not beneficial to improving the glare problem of the light emitting surface.
More preferably, the generatrix of the conical light-transmitting cover 300 is at an angle of 45 ° to the axis.
In a specific embodiment, as shown in fig. 3 and 5, the unpowered air-cooled lamp further comprises a light-emitting panel 400 electrically connected with the electrical module 200, wherein the light-emitting panel 400 is arranged in a closed optical cavity 600 between the heat dissipation shell 100 and the light-transmitting cover 300 around the axis of the cone-shaped light outlet part 310. So set up because: the large-diameter end of the cone-shaped light outlet part 310 is fixedly connected with the front end of the heat dissipation shell 100, and the small-diameter end is fixedly connected with the rear end of the heat dissipation shell 100, so that a closed optical cavity 600 can be formed between the heat dissipation shell 100 and the light-transmitting cover 300, and after the light-emitting panel 400 is fixedly arranged in the closed optical cavity 600, dust or rainwater can be prevented from entering, and further, the phenomenon that light emitted by the light-emitting panel 400 is shielded is prevented, so that the brightness of the light-emitting surface of the lamp is ensured; meanwhile, the light-emitting panel 400 is arranged around the axis of the cone-shaped light outlet part 310, so that the lamp can form circular light spots, and the brightness of the light spots is the same.
In a specific embodiment, as shown in fig. 1, 3, 5, and 6, the heat dissipation housing 100 is a die-cast housing structure, and includes a cylindrical body 110 and an end plate 120, the cylindrical body 110 is a cone with a large end and a small end, wherein the large diameter end of the cylindrical body 110 is a front end, and the small diameter end is a rear end; the end plate part 120 is fixedly arranged at the rear end of the barrel part 110 and is coaxially provided with an exhaust port; the inner wall of the cylindrical body 110 is provided with a light reflecting surface 111 for reflecting the light emitted from the light emitting panel 400 in a predetermined direction. So set up because: in order to make the lamp form a circular light spot with the same brightness, the light-emitting panel 400 needs to be fixedly installed in the closed optical cavity 600 in a ring shape; an annular end plate part 120 is fixedly connected to the rear end of the barrel part 110, and the end plate part 120 can be used as a mounting plate of the light-emitting panel 400 to facilitate the fixation of the light-emitting panel 400; meanwhile, the barrel 110 is designed to be tapered, so that the thickness of the heat dissipation casing 100 is equal and thin, and the heat dissipation of the closed optical cavity 600 is facilitated.
Preferably, as shown in fig. 5, the light emitting panel 400 includes an LED module 410 and a wire 420, the LED module 410 is formed by connecting a plurality of LED beads in series and parallel, and the plurality of LED modules 410 are circumferentially distributed on the end plate portion 120 at intervals and connected in series by a wire 420, and the wire 420 penetrates through the end plate portion 120 and is electrically connected with the electrical module 200. So set up because: the heating part of the projection lamp is mainly an electric component, and the electric component outside the LED module 410 is integrated and then arranged outside the heat dissipation shell 100, so that heat is favorably discharged; meanwhile, the paired LED modules 410 are circumferentially distributed on the end plate portion 120 at intervals, so that circular light spots with the same brightness can be formed, and compared with an integrated annular lamp, the material utilization rate can be improved, so that the production cost is reduced.
More preferably, as shown in fig. 6, the heat dissipation housing 100 further includes a plurality of heat dissipation fins 130, the plurality of heat dissipation fins 130 are uniformly distributed along the radial direction and the circumference of the end plate portion 120 away from the barrel portion 110, and the axial dimension of the heat dissipation fins 130 is smaller than the axial dimension of the sealed optical cavity 600. So set up because: after the air flowing in the airflow channel 700 reaches the electrical module 200, the airflow will flow to both sides of the rear end of the heat dissipation casing 100 under the blocking effect of the electrical module 200, and the plurality of heat dissipation fins 130 are uniformly distributed on the circumference of the rear end of the heat dissipation casing 100, so that the heat dissipation effect of the sealed optical cavity 600 can be improved by the flow of the airflow. By setting the axial dimension of the heat sink 130 to be smaller than the axial dimension of the sealed optical cavity 600, the sealed optical cavity 600 can have a larger depth, and the heat sink 100 has a larger area of the light-reflecting surface 111, so as to increase the light-emitting path of the ED lamp, form a controllable light distribution of the lamp, and effectively solve the problem of glare of the lamp.
Preferably, the light reflecting surface 111 is an arc surface for condensing light emitted from the light emitting panel 400.
In one embodiment, as shown in fig. 1, 3, 6, 7, and 8, the heat dissipation housing 100 and the light transmissive cover 300 are detachably connected, such as by snap-fitting. This is so set up because: adopt detachable mode to connect heat dissipation shell 100 and printing opacity cover 300 as an organic whole, be convenient for the assembly and disassembly of heat dissipation shell 100 and printing opacity cover 300, and then improve the production efficiency of lamps and lanterns to make things convenient for the maintenance of lamps and lanterns.
Specifically, the method comprises the following steps: as shown in fig. 6, 7 and 8, the large diameter end of the cone light-emitting portion 310 is connected to a cylindrical first connecting portion 320, a plurality of first elastic clamping blocks 330 capable of radially extending and retracting are uniformly distributed on the circumference of the first connecting portion 320, meanwhile, a plurality of first radial clamping grooves 112 are uniformly distributed on the circumference of the front end of the barrel portion 110, and the first elastic clamping blocks 330 are correspondingly clamped in the first radial clamping grooves 112 one by one. The small diameter end of the cone-shaped light-emitting portion 310 is connected to a cylindrical second connecting portion 340, a plurality of second elastic clamping blocks 350 capable of radially extending and retracting are evenly distributed on the second connecting portion 340, meanwhile, a plurality of second radial clamping grooves 121 are evenly distributed on the rear end of the barrel portion 110, and the second elastic clamping blocks 350 are correspondingly clamped in the second radial clamping grooves 121 one by one. So set up because: when the heat dissipation shell 100 and the light-transmitting cover 300 are assembled, the light-transmitting cover 300 can be clamped and fixed with the heat dissipation shell 100 only by moving the light-transmitting cover 300 in the heat dissipation shell 100 along the axial direction, so that the production efficiency of the lamp can be improved conveniently.
In an embodiment, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, the unpowered air-cooled lamp further includes a U-shaped bracket 500, and two leg ends of the U-shaped bracket 500 are rotatably connected to the heat dissipation housing 100, and the rotation angle can be fixed. So set up because: through the rotation of the connection angle between the U-shaped support 500 and the heat dissipation shell 100, the irradiation direction of the light of the lamp can be changed conveniently, and the lamp can be fixedly supported by the U-shaped support 500 through fixing the angle.
Compared with the prior art, the application has at least the following beneficial technical effects:
1. an annular closed optical cavity 600 is formed between the heat dissipation shell 100 and the light-transmitting cover 300 in the application, the axial dimension of the closed optical cavity 600 is more than 1/2 of the axial dimension of the heat dissipation shell 100, and the light-emitting route of an LED lamp emission pipeline can be increased by matching the reflection effect of the arc-shaped light reflection surface 111 on the inner wall of the heat dissipation shell 100 on light, so that controllable lamp light distribution is formed, and the problem of lamp glare is effectively solved.
2. The light-transmitting cover 300 is arranged in a tapered cylindrical shape and has a light-emitting surface larger than a plane light-emitting mirror, so that the surface brightness of the light-transmitting cover 300 can be reduced, and the glare problem that the brightness of the light-emitting surface is too high is solved.
3. The light emitting surface of the light-transmitting cover 300 in the application has taper, so that the resistance of air convection inside the airflow channel 700 can be reduced, cold air can flow in the airflow channel 700 more smoothly, the heat of the electrical module 200 at the rear end of the heat dissipation shell 100 is taken away, and the problems of high temperature and poor reliability of a lamp due to heat concentration of a high-power lamp and fixation of the electrical module 200 at the rear end of the heat dissipation shell 100 are solved.
4. The light-emitting panel 400 is formed by splicing small light-source plates, the single LED modules 410 can be designed to be in different series-parallel relations, and the single LED modules 410 are connected through a wire 420 to form a complete circuit connection to match the output voltage and current of the electric module 200; compared with the integrated PCB processing of the annular lamp, the material waste can be reduced, the material utilization rate is improved, and the production cost is reduced.
The above are only preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. An unpowered air cooled light fixture, comprising:
the heat dissipation device comprises a heat dissipation shell (100), wherein the front end of the heat dissipation shell (100) is provided with an air inlet, and the rear end of the heat dissipation shell is provided with an air outlet;
an electrical module (200), the electrical module (200) being disposed at a rear end of the heat dissipation case (100) and opposite to the air outlet;
the light-transmitting cover (300) is arranged in the inner cavity of the heat dissipation shell (100), and the light-transmitting cover (300) is provided with an airflow channel (700) communicated with the air inlet and the air outlet and used for cooling the electrical module (200).
2. The unpowered air-cooled lamp as claimed in claim 1, wherein the light-transmitting cover (300) includes a cone light-emitting portion (310) for enlarging a light-emitting surface, a large-diameter end of the cone light-emitting portion (310) is connected to a front end of the heat dissipation housing (100), a small-diameter end of the cone light-emitting portion is connected to a rear end of the heat dissipation housing (100), and the cone light-emitting portion (310) is coaxially provided with the circular truncated cone-shaped airflow channel (700).
3. The unpowered air-cooled lamp as claimed in claim 2, wherein the included angle between the generatrix of the cone-shaped light outlet portion (310) and the axis is 30-60 °.
4. An unpowered air-cooled lamp as claimed in claim 3, wherein the included angle between the generatrix of the cone-shaped light outlet portion (310) and the axis is 45 °.
5. An unpowered air-cooled lamp as claimed in claim 2 further comprising a light-emitting panel (400) electrically connected to the electrical module (200), the light-emitting panel (400) being disposed around the axis of the cone light outlet (310) in a sealed optical cavity (600) between the heat-dissipating housing (100) and the light-transmissive cover (300).
6. The unpowered air-cooled lamp as recited in claim 5, wherein the heat dissipation casing (100) comprises a cylindrical body (110) and an end plate portion (120), the end plate portion (120) is fixedly arranged at the rear end of the cylindrical body (110) and is coaxially provided with the exhaust port; and a light reflecting surface (111) for reflecting the light emitted by the light emitting panel (400) to a preset direction is arranged on the inner wall of the barrel part (110).
7. An unpowered air-cooled lamp as set forth in claim 6 wherein the light emitting panel (400) includes LED modules (410) and wires (420), the LED modules (410) being circumferentially spaced on the end plate portion (120) and being electrically connected to the electrical module (200) by the wires (420) extending through the end plate portion (120).
8. The unpowered air-cooled lamp as recited in claim 6, wherein the heat sink casing (100) further comprises heat sinks (130), the heat sinks (130) are radially and circumferentially distributed on a side of the end plate portion (120) away from the barrel portion (110), and an axial dimension of the heat sinks (130) is smaller than an axial dimension of the sealed optical cavity (600).
9. An unpowered air-cooled lamp as claimed in claim 6, wherein the light reflecting surface (111) is an arc surface for converging light rays emitted from the light emitting panel (400).
10. The unpowered air-cooled lamp as recited in claim 6, wherein a plurality of first radial slots (112) are uniformly distributed on a circumference of a front end of the barrel portion (110), a first radially retractable elastic latch (330) is uniformly distributed on a circumference of a large diameter end of the conical barrel light-emitting portion (310), and the first elastic latch (330) is latched in the first radial slots (112); a plurality of second radial clamping grooves (121) are uniformly distributed on the circumference of the end plate part (120), second elastic clamping blocks (350) capable of radially extending and retracting are uniformly distributed on the circumference of the small-diameter end of the conical tube light-emitting part (310), and the second elastic clamping blocks (350) are clamped in the second radial clamping grooves (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210688727.8A CN114992553A (en) | 2022-06-16 | 2022-06-16 | Unpowered air-cooled lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210688727.8A CN114992553A (en) | 2022-06-16 | 2022-06-16 | Unpowered air-cooled lamp |
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| Publication Number | Publication Date |
|---|---|
| CN114992553A true CN114992553A (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210688727.8A Pending CN114992553A (en) | 2022-06-16 | 2022-06-16 | Unpowered air-cooled lamp |
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| CN104728619A (en) * | 2011-08-29 | 2015-06-24 | 王文丽 | Light reflection face LED illumination lamp |
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| JP2013127880A (en) * | 2011-12-16 | 2013-06-27 | Samsung Electronics Co Ltd | Bulb type lighting device |
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