CN114440201B - Heat dissipation mechanism and LED movie & TV lamp - Google Patents
Heat dissipation mechanism and LED movie & TV lamp Download PDFInfo
- Publication number
- CN114440201B CN114440201B CN202210092802.4A CN202210092802A CN114440201B CN 114440201 B CN114440201 B CN 114440201B CN 202210092802 A CN202210092802 A CN 202210092802A CN 114440201 B CN114440201 B CN 114440201B
- Authority
- CN
- China
- Prior art keywords
- heat dissipation
- heat
- radiating
- light
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 139
- 230000007246 mechanism Effects 0.000 title claims abstract description 36
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000005855 radiation Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
- 239000007788 liquid Substances 0.000 description 7
- 238000012937 correction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 241001465382 Physalis alkekengi Species 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F21V29/15—Thermal insulation
-
- 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
- F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
-
- 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
- F21V29/673—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 intake
-
- 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
-
- 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
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
-
- 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
- F21V31/00—Gas-tight or water-tight arrangements
-
- 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]
Landscapes
- 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 a heat dissipation mechanism and an LED film and television lamp, which relate to the technical field of LEDs and comprise a fixing device and a light-emitting device; the fixing device comprises a first radiating part and a second radiating part, a radiating interval is arranged between the first radiating part and the second radiating part, and a containing cavity and a radiating channel penetrating through the containing cavity are arranged on the first radiating part; the accommodating cavity is internally provided with a control element, and the heat dissipation channel comprises a first funnel part provided with a wide-mouth end and a narrow-mouth end, a second funnel part provided with a thin-mouth end and a thick-mouth end, and an air guide part provided with a radiator; the light-emitting device comprises a light-emitting piece arranged on the second heat-radiating part and a plurality of heat-radiating ridges arranged at intervals and arranged on the back surface of the light-emitting piece; the light-emitting piece is electrically connected with the control element, each heat dissipation ridge is provided with a confluence notch, and the confluence notches are mutually aligned to form a confluence channel aligned to the heat dissipation channel; therefore, the temperature of the control panel is less affected by the heat of the LED, the temperature uniformity of the light-emitting device during working is improved, the waterproof performance is improved, and the heat dissipation noise is reduced.
Description
Technical Field
The invention relates to the technical field of LEDs, in particular to a heat dissipation mechanism and an LED film and television lamp.
Background
In the field of LEDs, LEDs are widely used in various fields due to their advantages of compact structure and high brightness; on the other hand, the LED light source has a certain disadvantage or deficiency because the light emitting quality and the light emitting efficiency of the LED light source are greatly affected by temperature, and once a plurality of LEDs are integrated into a high-power LED lamp such as an LED film and television lamp, the LED lamp cannot work normally due to a large heat productivity, and the like, especially for professional lamps such as the LED film and television lamp, the disadvantage is that the normal use of the whole equipment or machine is seriously affected.
The specific reasons for the generation of the partial defects are as follows:
firstly, when the LED lamp works, a large amount of heat is transferred to a control circuit board positioned on the back of an LED setting area, and when the temperature of the control circuit board is too high, the control precision and the response speed of the control circuit board are influenced; the heat generated by the LED lamp has a large influence coefficient on the temperature of the control panel;
secondly, the heat dissipation of the LED depends on the structures such as a heat dissipation fin or a heat dissipation fan on the back, however, no matter what the arrangement structure is, the heat dissipation effect is better in the area closer to the heat dissipation fan, so that the temperature of the LED arrangement area is uneven, the temperature regulation and control device in equipment or machine is difficult to obtain accurate temperature, the correct temperature correction can not be carried out according to the temperature feedback, and the proper brightness, color temperature and color development effect can not be obtained after the temperature correction; the temperature uniformity of the LED lamp is poor;
thirdly, liquid easily enters the product along the air guide channel, so that faults such as short circuit and the like are caused to electronic components in the product, the air guide channel is used as a heat dissipation structure to reversely form a dead angle for liquid infiltration, and the LED lamp is poor in waterproof performance;
fourth, the wind resistance is larger when the air flow generated by the fan inside the part of LED lamps and lanterns flows, and larger heat dissipation noise is generated, so that the requirements of using noise of products such as film and television LED lamps and lanterns can not be met.
Disclosure of Invention
The invention aims to solve the technical problem of providing the heat dissipation mechanism and the LED film and television lamp which have the advantages that the temperature of the control panel is little influenced by the heat of the LED, the working temperature uniformity is high, the waterproof performance is good, and the heat dissipation noise is low.
The technical scheme adopted for solving the technical problems is as follows:
the application provides a heat dissipation mechanism, which comprises a fixing device and a light-emitting device;
the fixing device comprises a first radiating part and a second radiating part, a radiating interval is arranged between the first radiating part and the second radiating part, and a containing cavity and a radiating channel penetrating through the containing cavity are arranged on the first radiating part;
the heat dissipation channel comprises a first funnel part provided with a wide-mouth end and a narrow-mouth end, a second funnel part provided with a thin-mouth end and a thick-mouth end, and an air guide part provided with a radiator; the wide port end is communicated with the outside, the narrow port end is communicated with the thin port end, the thick port end is communicated with the air guide part, and the air guide part is communicated with the heat dissipation interval;
the light-emitting device comprises a light-emitting piece arranged on the second heat-radiating part and a plurality of heat-radiating ridges arranged on the back surface of the light-emitting piece at intervals; the light emitting piece is electrically connected with the control element, each heat dissipation ridge is provided with a confluence notch, the confluence notches are mutually aligned to form a confluence channel, and the confluence channel is aligned to the heat dissipation channel.
In some embodiments, each heat dissipating ridge is provided with a heat collecting portion with a larger width at two sides of the converging notch, and each heat collecting portion and each converging notch jointly define the converging channel.
In some embodiments, each of the heat dissipating ridges is provided with at least one heat dissipating tooth in the bus bar notch.
In some embodiments, the second funnel portion is provided with an air passing through hole communicated with the accommodating cavity at a position close to the thick opening end, and the side wall of the first heat dissipation portion is provided with a side air inlet hole communicated with the accommodating cavity.
In some embodiments, the heat sink includes a fan blade disposed in the air guiding part, and the fan blade may drive the external air to flow into the collecting channel after passing through the heat dissipating channel when rotating, and further flow to the outside by passing through a space between two adjacent heat dissipating ridges.
In some embodiments, the control element comprises a control circuit board, and a control switch disposed on the control circuit board;
the control circuit board is electrically connected with the light-emitting part, and the control switch is exposed out of the first heat dissipation part.
In some embodiments, the second heat dissipation portion is provided with a heat dissipation baffle, and the heat dissipation baffle is provided with a plurality of avoidance holes, and each avoidance hole is in one-to-one correspondence with the interval between two adjacent heat dissipation ridges.
In a second aspect, the invention also provides an LED film and television lamp, which comprises a supporting mechanism and a heat dissipation mechanism in any one of the above technical schemes;
the heat dissipation mechanism is arranged on the supporting mechanism.
In some embodiments, the support mechanism comprises a support frame, a U-shaped card rotatably arranged on the support frame, and a transverse movement adjusting piece slidably arranged on the U-shaped card;
the U-shaped clamp is provided with an angle adjusting graduated scale, the support frame is provided with a scale mark corresponding to the angle adjusting graduated scale, and the first heat dissipation part and the second heat dissipation part are respectively arranged on the support frame.
In some embodiments, the support frame is provided with a plurality of through holes and a plurality of lightening holes, and each through hole is respectively communicated with the first heat dissipation part.
The heat dissipation mechanism and the LED film and television lamp have the following beneficial effects:
according to the heat radiation mechanism and the LED video lamp, the control element is arranged on the first heat radiation part, the light-emitting device is arranged on the second heat radiation part, and the heat radiation interval is arranged between the first heat radiation part and the second heat radiation part, so that the control element is prevented from being influenced too much by the heat of the light-emitting device, meanwhile, the control element is prevented from occupying the arrangement space of the heat radiation ridge, and the heat radiation efficiency is improved; the flow collecting channel can collect air flowing out of the heat radiating channel, so that heat radiating uniformity is effectively improved, meanwhile, the radiator can generate smaller air quantity to meet heat radiating requirements, and heat radiating noise of products is reduced; secondly, the storage cavity and the heat dissipation channel are isolated from each other, so that liquid entering the heat dissipation channel cannot enter the storage cavity to damage the control element.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of an LED film and television lamp according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the LED film lamp shown in FIG. 1 from another angle;
FIG. 3 is an exploded view of the LED film and television lamp of FIG. 2;
FIG. 4 is an exploded view of a fixture in accordance with a preferred embodiment of the present invention;
fig. 5 is a schematic diagram showing a sectional structure of an LED film and television lamp according to a preferred embodiment of the present invention.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
Fig. 1 and 2 show an LED video lamp 1A according to some preferred embodiments of the present invention, which can be powered on and generate light. The LED film and television lamp 1A can comprise a heat dissipation mechanism 1 and a support mechanism 2, wherein the heat dissipation mechanism 1 is arranged on the support mechanism 2, the heat dissipation mechanism 1 plays a role in heat dissipation, and the support mechanism 2 plays a role in supporting and fixing the heat dissipation mechanism 1.
As shown in fig. 2, 3, 4 and 5, the heat dissipation mechanism 1 may include a fixing device 10 and a light emitting device 20 in some embodiments. The fixing device 10 is disposed on the supporting mechanism 2, and the fixing device 10 is used for carrying and fixing the light emitting device 20. The light emitting device 20 is disposed on the fixing device 10, and the light emitting device 20 is used for generating light when being electrified.
The fixing device 10 includes a first heat dissipation portion 11 and a second heat dissipation portion 12, a heat dissipation space 13 is provided between the first heat dissipation portion 11 and the second heat dissipation portion 12, and a receiving cavity 111 and a heat dissipation channel 112 penetrating through the receiving cavity 111 are provided on the first heat dissipation portion 11; a control element 113 is provided in the housing chamber 111.
As can be appreciated, the first heat sink member 11 is used to mount electronic components such as the control element 113; the second heat dissipation part 12 is used for fixing the light emitting device 20; the heat dissipation interval 13 plays a role in isolating heat, so that heat generated by the light emitting device 20 is prevented from being directly transferred to the first heat dissipation part 11 through the second heat dissipation part 12, the influence of the heat generated by the light emitting device 20 on the normal operation of the control element 113 is reduced as much as possible, and the control element 113 can maintain higher control precision and response speed.
As shown in fig. 4 and 5, the heat dissipation channel 112 includes a first funnel 1121, a second funnel 1122, and an air guide 1123; the first funnel portion 1121 is provided with a wide-mouth end 1121a and a narrow-mouth end 1121b, and the second funnel portion 1122 is provided with a narrow-mouth end 1122a and a thick-mouth end 1122b.
Wherein the wider wide-mouth end 1121a is communicated with the outside, so that the flow rate of the air entering the first funnel 1121 for heat dissipation can be increased; the narrower narrow mouth end 1121b communicates with the narrow mouth end 1122 a. The thick opening end 1122b communicates with the air guide portion 1123, and the air guide portion 1123 communicates with the heat dissipation space 13. Various structures of the prior art, such as fan blades, which direct the directional flow of air, may be provided within the air guide 1123.
It can be appreciated that the first funnel 1121 and the second funnel 1122 are funnel-shaped as a whole. The side wall of the first funnel portion 1121 gradually approaches the narrow opening end 1121b to collect air flow, so that liquid or mist falling into the first funnel portion 1121 can directly enter the second funnel portion 1122 through the narrow opening end 1121b and finally be discharged through the air guide portion 1123. The side wall of the second funnel 1122 gradually expands along the thin opening end 1122a to form the thick opening end 1122b, and the cross-sectional area of the airflow in the flow direction gradually increases, so that the air flow velocity can be reduced to some extent, and noise can be reduced.
As shown in fig. 4 and 5, the light emitting device 20 includes a light emitting member 21 disposed on the second heat dissipating portion 12, and a plurality of heat dissipating ridges 22 disposed on the back surface of the light emitting member 21 at intervals; the light emitting element 21 is electrically connected with the control element 113, and each heat dissipation ridge 22 is provided with a confluence notch 221, and each confluence notch 221 is aligned with each other to form a confluence channel 222, and the confluence channel 222 is aligned with the heat dissipation channel 112. Specifically, the bus bar notches 221 are aligned with each other, that is, the centers of the bus bar notches 221 are aligned along the same straight line.
It is understood that the light emitting element 21 may be a light emitting element such as an LED lamp. The heat dissipation ridge 22 is used for absorbing heat generated by the light emitting element 21 during operation and then transferring the heat to the outside air to play a role in heat dissipation; the distance between every two heat dissipation ridges 22 can be flexibly set, and the heat dissipation capacity of the light emitting part 21 is determined according to the heat dissipation capacity, so that heat is ensured not to be transferred between the two heat dissipation ridges 22 to cause heat accumulation to be optimal, and the heat dissipation effect is ensured. The plurality of flow collecting notches 221 are aligned to form a flow collecting channel 222 for the heat dissipation air flow to flow smoothly, so as to further improve the heat dissipation effect. The collecting channel 222 is aligned with the heat dissipating channel 112, so that the collecting channel 222 can smoothly receive the heat dissipating air flow and guide the air flow to move along a predetermined direction for heat exchange with the heat dissipating ridge 22.
In summary, during the actual working process, the air guiding portion 1123 sucks the external air into the first funnel portion 1121 and passes through the second funnel portion 1122 to enter the air guiding portion 1123, and the air flow is finally discharged into the collecting channel 222 through the air guiding portion 1123; the air flows along the collecting channels 222, and gradually branches to the intervals between the heat dissipating ridges 22 in the flowing process, so that the air and the heat dissipating ridges 22 perform full heat exchange.
Based on the technical scheme, the beneficial effects of the invention at least comprise:
first, set up control element in first radiating portion, set up lighting device in second radiating portion to set up the heat dissipation interval between first radiating portion and second radiating portion, thereby avoid control element to receive lighting device's heat influence too big, still avoid control element to occupy the setting space of heat dissipation ridge simultaneously, improved radiating efficiency.
Second, the collecting channels can collect the air flow flowing out of the heat dissipation channels and uniformly distribute the air flow to the intervals among the heat dissipation ridges 22, so that the heat dissipation effect is effectively improved, and the heat dissipation uniformity is improved.
Thirdly, the storage cavity provided with the control element is separated from the heat dissipation channel for the heat dissipation airflow to flow, so that the damage such as short circuit and the like caused by liquid infiltration into the control element can be effectively prevented; second, the first funnel portion 1121, which tapers inwardly in side wall, can also block liquid from falling into the second funnel portion 1122 to some extent.
Fourth, the flow rate is reduced during the flow of the heat dissipating air from the thin end 1122a to the thick end 1122b, thereby reducing the noise caused by the heat dissipating air. Meanwhile, the air flow flowing out from the thick opening end 1122b with a larger caliber can enter the flow collecting channel 222 with a larger action area, so that the heat dissipation air flow is more uniformly distributed to the intervals between the heat dissipation ridges, the heat dissipation uniformity is further improved, the local heat dissipation rate of the light-emitting device 20 is prevented from being too fast or too slow, the temperature uniformity of the light-emitting device 20 in the working process is improved, and the accurate brightness, color temperature and color development effect can be obtained after the temperature correction.
As shown in fig. 4 and 5, in some embodiments, the second funnel 1122 is provided with an air passing through hole 1122c communicating with the receiving cavity 111 at a position close to the thick opening end 1122b, and the side wall of the first heat dissipation part 11 is provided with a side air inlet 114 communicating with the receiving cavity 111.
It can be understood that, compared with the light emitting device 20, the heat generated by the control element 113 is smaller, but the heat dissipation is required in real time to ensure that the control element 113 can respond normally. In the present embodiment, the external air enters the accommodating cavity 111 through the side air inlet 114 and exchanges heat with the control element 113 in the cavity, so as to reduce the heat on the control element 113; the heat-exchanged air flows through the air-passing through holes 1122c and then flows into the second funnel 1122, and then flows into the first funnel 1121 from the outside, thereby dissipating heat from the subsequent heat dissipating ridges.
As shown in fig. 4 and 5, in some embodiments, each heat dissipating ridge 22 is provided with a heat collecting portion 223 with a larger width on each side of the merging notch 221, and each heat collecting portion 223 and each merging notch 221 together define a merging channel 222.
It will be appreciated that the larger width of the heat collecting portion 223 first does not mean that there is a difference in thickness from other portions of the heat dissipating ridge 22; the larger width heat dissipation ridge 22 can accommodate more heat adaptively, so that on one hand, the heat exchange area of the heat dissipation ridge 22 is increased, and on the other hand, the heat can be collected in the collecting channel 222, so that the heat can be quickly taken away by air flowing in the collecting channel 222, and the heat dissipation effect is effectively improved.
Preferably, in some embodiments, a dust-proof plate may be further disposed on each heat dissipating ridge 22, where the dust-proof plate prevents dust from being stained on each heat dissipating ridge 22, so as to ensure that the heat dissipating ridge 22 can maintain good heat dissipation performance. Further, a plurality of heat dissipation holes can be formed in the dust-proof plate and used for dissipating heat between two adjacent heat dissipation ridges to the outside; more specifically, the partial dispersion heat holes may be located above the respective heat dissipating ridges 22, and also the partial dispersion heat holes may be located at the ends of the respective heat dissipating ridges 22 so that heat may flow out from both flow directions. It will be appreciated that the heat dissipation apertures may be in the shape of honeycomb apertures, circular apertures, square apertures, etc.
As shown in fig. 5, in some embodiments, each heat dissipating ridge 22 is provided with at least one heat dissipating protrusion 224 in the bus bar notch 221.
It will be appreciated that the heat dissipating fins 224 may be generally square, circular or otherwise shaped, and that the heat dissipating fins 224 are exposed within the manifold channels 222 and thus are capable of exchanging heat with air flowing along the manifold channels 222, thereby further enhancing the heat dissipation of the heat dissipating ridges 22.
Further, the confluence notch 221 is circular, and the heat dissipation protrusion 224 is disposed at the bottom of the circular confluence notch 221.
It will be appreciated that the rounded convergence notch 221 provides a smoother flow path for the airflow; however, since the width of the heat dissipating ridge 22 near the bottom of the circular bus bar notch 221 is small, the heat dissipating effect at this position is also low, and the provision of the heat dissipating teeth 224 can compensatively improve the heat dissipating capability of the portion having a small thickness.
The thickness of the part of the heat dissipation ridge 22 adjacent to the airflow flowing is larger, the corresponding heat dissipation effect is better, the thickness of the part of the heat dissipation ridge 22, which is close to the confluence notch 221, is smaller, but the heat collection effect of the heat dissipation ridge 22 at the position is improved to a certain extent by the heat dissipation convex teeth 224 at the bottom, in general, in the actual use process of the product, the heat dissipation capacity of the heat dissipation ridge 22 at each position tends to be balanced, the heat dissipation uniformity of the light-emitting device 20 is improved, the local supercooling and overheat is avoided, and the product can obtain the schematic brightness, color temperature and color development effect after the temperature correction through the feedback of the temperature sensor.
As shown in fig. 4 and 5, in some embodiments, the heat sink includes fan blades (not shown) disposed in the air guiding portion 1123, and the fan blades can drive the external air to flow into the collecting channel 222 after passing through the heat dissipating channel 112 when rotating, and further flow to the outside by passing through the space between two adjacent heat dissipating ridges 22.
It is understood that the fan blade may be driven to rotate by a motor, and the start-stop and the heat dissipation rotation speed of the motor may also be controlled by the control element 113. When the fan blades rotate, a certain pressure difference can be formed on two sides of the fan blades, so that external air is driven to flow into the heat dissipation channel 112 and further flow into the collecting channel 222.
As shown in fig. 3, 4 and 5, the control element 113 may include a control circuit board 1131 and a control switch 1132 disposed on the control circuit board 1131 in some embodiments;
the control circuit board 1131 is electrically connected to the light emitting element 21, and the control switch 1132 is exposed outside the first heat dissipation part 11.
It is understood that a predetermined control circuit or driving circuit is preset in the control circuit board 1131. The non-user can conveniently control the operation of the various electronic components by manipulating the control switch 1132, performing operations such as adjusting the light emitting region of the light emitting device 20, adjusting the light emitting luminance of the light emitting device 20, or correcting the light emitting color of the light emitting device 20.
As shown in fig. 4 and 5, the second heat dissipation portion 12 may be provided with a heat dissipation baffle 121 in some embodiments, and the heat dissipation baffle 121 is provided with a plurality of avoidance holes 1211, where each avoidance hole 1211 is in one-to-one correspondence with a space between two adjacent heat dissipation ridges 22.
It will be appreciated that the heat dissipation baffle 121 serves to protect the ends of the respective heat dissipation ridges 22 from damage caused by foreign objects to the ends of the heat dissipation ridges 22. The clearance hole 1211 is used for allowing the air flowing through the space between the two heat dissipating ridges 22 to flow out to the outside after the heat exchange with the heat dissipating ridges 22, so as to prevent the heat from accumulating at the contact position between the heat dissipating ridges 22 and the heat dissipating baffle 121.
As shown in fig. 1, 2 and 3, the supporting mechanism 2 may include a supporting frame 30, a U-shaped card 40 rotatably disposed on the supporting frame 30, and a lateral movement adjusting member 50 slidably disposed on the U-shaped card 40 in some embodiments;
the U-shaped card 40 is provided with an angle adjusting scale 41, the support frame 30 is provided with a scale 31 corresponding to the angle adjusting scale 41, and the first heat dissipation part 11 and the second heat dissipation part 12 are respectively arranged on the support frame 30.
As can be appreciated, the support bracket 30 serves to fix the first heat radiating portion 11 and the second heat radiating portion 12; the first heat dissipation part 11 and the second heat dissipation part 12 can be driven to rotate together relative to the U-shaped card 40, so that the irradiation angle of the light emitting device 20 can be adjusted. The U-shaped card 40 is used for bearing the rotation of the support frame 30, and the support frame 30 and the U-shaped card 40 can be in rotational connection through a rotating shaft. The traverse adjusting member 50 is slidable on the U-shaped card 40 along a predetermined trajectory and maintains a relative position to the traverse adjusting member 50; the sliding connection between the traversing adjusting piece 50 and the U-shaped card 40 can be realized through a sliding rail and sliding block structure.
It will be further appreciated that in this embodiment, on the one hand, the relative positions of the traversing adjusting member 50 and the U-shaped card 40 can be slidably adjusted to achieve position adjustment in the horizontal direction, and on the other hand, the relative angles of the U-shaped card 40 and the supporting frame 30 can be rotationally adjusted to achieve adjustment of the light projection angle. When rotated, the user can precisely project the angle adjustment by observing the difference in the positions of the index 31 pointing to the angle adjustment scale 41.
As shown in fig. 2, 3 and 5, the supporting frame 30 may be provided with a plurality of through holes 32 and a plurality of weight-reducing holes 33 in some embodiments, where each through hole 32 is respectively communicated with the first heat dissipation portion 11.
As can be appreciated, the through holes 32 are used for air outside the product to enter the housing cavity 111 to cool the control element 113. The lightening holes 33 serve to lighten the overall weight of the product and improve the portability of the product.
The heat dissipation mechanism and the LED film and television lamp have the following beneficial effects:
according to the heat radiation mechanism and the LED video lamp, the control element is arranged on the first heat radiation part, the light-emitting device is arranged on the second heat radiation part, and the heat radiation interval is arranged between the first heat radiation part and the second heat radiation part, so that the control element is prevented from being influenced too much by the heat of the light-emitting device, meanwhile, the control element is prevented from occupying the arrangement space of the heat radiation ridge, and the heat radiation efficiency is improved; the heat collecting channel can collect heat on one hand, and can collect air flowing out of the heat radiating channel on the other hand, so that the heat radiating uniformity is effectively improved, meanwhile, the radiator can generate smaller air quantity to meet the heat radiating requirement, and the heat radiating noise of the product is reduced; secondly, the storage cavity and the heat dissipation channel are isolated from each other, so that liquid entering the heat dissipation channel cannot enter the storage cavity to damage the control element.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same according to the content of the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made with the scope of the claims should be covered by the claims.
Claims (9)
1. The heat dissipation mechanism is characterized by comprising a fixing device and a light-emitting device;
the fixing device comprises a first radiating part and a second radiating part, a radiating interval is arranged between the first radiating part and the second radiating part, and a containing cavity and a radiating channel penetrating through the containing cavity are arranged on the first radiating part;
the heat dissipation channel comprises a first funnel part provided with a wide-mouth end and a narrow-mouth end, a second funnel part provided with a thin-mouth end and a thick-mouth end, and an air guide part provided with a radiator; the wide port end is communicated with the outside, the narrow port end is communicated with the thin port end, the thick port end is communicated with the air guide part, and the air guide part is communicated with the heat dissipation interval;
the light-emitting device comprises a light-emitting piece arranged on the second heat-radiating part and a plurality of heat-radiating ridges arranged on the back surface of the light-emitting piece at intervals; the light emitting piece is electrically connected with the control element, each heat dissipation ridge is provided with a confluence notch, the confluence notches are mutually aligned to form a confluence channel, and the confluence channel is aligned to the heat dissipation channel; the heat dissipation ridges are respectively provided with heat collection parts with larger widths at two sides of the confluence notch, and the heat collection parts and the confluence notch jointly define the confluence channel.
2. The heat dissipation mechanism of claim 1, wherein each of the heat dissipation ridges is provided with at least one heat dissipation tooth within the bus bar notch.
3. The heat dissipation mechanism according to claim 1, wherein the second funnel portion is provided with an air passing through hole communicated with the accommodating cavity at a position close to the thick opening end, and a side air inlet hole communicated with the accommodating cavity is formed in a side wall of the first heat dissipation portion.
4. The heat dissipating mechanism of claim 1, wherein the heat sink comprises a fan blade disposed in the air guiding portion, the fan blade being rotatable to drive the flow of outside air into the collecting channel after passing through the heat dissipating channel, and further to the outside by passing through a space between two adjacent heat dissipating ridges.
5. The heat dissipation mechanism of claim 1, wherein the control element comprises a control circuit board, and a control switch disposed on the control circuit board;
the control circuit board is electrically connected with the light-emitting part, and the control switch is exposed out of the first heat dissipation part.
6. The heat dissipation mechanism according to claim 1, wherein a heat dissipation baffle is provided on the second heat dissipation portion, and a plurality of avoidance holes are provided on the heat dissipation baffle, and each avoidance hole is in one-to-one correspondence with a space between two adjacent heat dissipation ridges.
7. An LED film and television lamp comprising a support mechanism, and a heat dissipation mechanism as defined in any one of claims 1 to 6;
the heat dissipation mechanism is arranged on the supporting mechanism.
8. The LED video light of claim 7, wherein the support mechanism comprises a support frame, a U-shaped card rotatably disposed on the support frame, and a traversing adjusting member slidably disposed on the U-shaped card;
the U-shaped clamp is provided with an angle adjusting graduated scale, the support frame is provided with a scale mark corresponding to the angle adjusting graduated scale, and the first heat dissipation part and the second heat dissipation part are respectively arranged on the support frame.
9. The LED video lamp of claim 8, wherein the support frame is provided with a plurality of through holes and a plurality of lightening holes, and each through hole is respectively communicated with the first heat dissipation part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210092802.4A CN114440201B (en) | 2022-01-26 | 2022-01-26 | Heat dissipation mechanism and LED movie & TV lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210092802.4A CN114440201B (en) | 2022-01-26 | 2022-01-26 | Heat dissipation mechanism and LED movie & TV lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114440201A CN114440201A (en) | 2022-05-06 |
| CN114440201B true CN114440201B (en) | 2024-04-12 |
Family
ID=81370617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210092802.4A Active CN114440201B (en) | 2022-01-26 | 2022-01-26 | Heat dissipation mechanism and LED movie & TV lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114440201B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10234127B2 (en) * | 2016-02-08 | 2019-03-19 | Cree, Inc. | LED luminaire having enhanced thermal management |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185234A (en) * | 2011-12-28 | 2013-07-03 | 建准电机工业股份有限公司 | Lamp and heat dissipation unit thereof |
| CN206754992U (en) * | 2017-03-29 | 2017-12-15 | 宁波云腾电气有限公司 | Floodlight |
| CN110780520A (en) * | 2019-09-30 | 2020-02-11 | 深圳市火乐科技发展有限公司 | Projector |
| CN111503572A (en) * | 2019-11-20 | 2020-08-07 | 海洋王（东莞）照明科技有限公司 | Lamp fitting |
| CN212929678U (en) * | 2020-08-20 | 2021-04-09 | 佛山市猛进科技有限公司 | Stage lamp with noise reduction structure |
| CN213040403U (en) * | 2020-09-04 | 2021-04-23 | 深圳市爱图仕影像器材有限公司 | Photographic lamp |
| CN113885274A (en) * | 2021-12-06 | 2022-01-04 | 深圳市爱图仕影像器材有限公司 | Film and television lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI267337B (en) * | 2003-05-14 | 2006-11-21 | Inventor Prec Co Ltd | Heat sink |
-
2022
- 2022-01-26 CN CN202210092802.4A patent/CN114440201B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185234A (en) * | 2011-12-28 | 2013-07-03 | 建准电机工业股份有限公司 | Lamp and heat dissipation unit thereof |
| CN206754992U (en) * | 2017-03-29 | 2017-12-15 | 宁波云腾电气有限公司 | Floodlight |
| CN110780520A (en) * | 2019-09-30 | 2020-02-11 | 深圳市火乐科技发展有限公司 | Projector |
| CN111503572A (en) * | 2019-11-20 | 2020-08-07 | 海洋王（东莞）照明科技有限公司 | Lamp fitting |
| CN212929678U (en) * | 2020-08-20 | 2021-04-09 | 佛山市猛进科技有限公司 | Stage lamp with noise reduction structure |
| CN213040403U (en) * | 2020-09-04 | 2021-04-23 | 深圳市爱图仕影像器材有限公司 | Photographic lamp |
| CN113885274A (en) * | 2021-12-06 | 2022-01-04 | 深圳市爱图仕影像器材有限公司 | Film and television lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114440201A (en) | 2022-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114440201B (en) | Heat dissipation mechanism and LED movie & TV lamp | |
| CN101392882A (en) | Vehicle lighting device | |
| WO2014079132A1 (en) | Radiating system and radiating method of led threaded spot lamp | |
| CN110750027A (en) | Projector with a light source | |
| CN110780518A (en) | Projector with a light source | |
| CN218675653U (en) | Internal circulation heat dissipation formula projecting apparatus | |
| CN112782916A (en) | Totally-enclosed optical machine with vertical heat dissipation and projector thereof | |
| CN215769316U (en) | Heat dissipation mechanism and projector | |
| CN217443720U (en) | Bare engine with internal circulating heat dissipation mechanism | |
| CN217849909U (en) | Heat radiation structure and high-protection driver comprising same | |
| CN215416224U (en) | Photographic lamp | |
| CN109348090A (en) | The infrared line-scan digital camera of accurate temperature controller type and control method | |
| CN211667782U (en) | Waterproof imaging lamp of no fan | |
| CN110716374B (en) | Projector with a light source | |
| CN211236548U (en) | Projector with a light source | |
| CN209248452U (en) | A kind of server apparatus radiator structure | |
| CN219828770U (en) | Radiator and panel light | |
| CN220707290U (en) | Lamp holder with auxiliary heat dissipation function and stage lamp with same | |
| CN218104037U (en) | High-efficient heat dissipation type giga switch | |
| CN215929157U (en) | Sliding adjustment formula intelligence projecting apparatus for multimedia teaching | |
| CN213362039U (en) | Shot-light that radiating effect is good | |
| CN212805391U (en) | Semiconductor LED lamp heat radiation structure | |
| CN219842622U (en) | Fan structure of projector | |
| CN110994902B (en) | Cooling device | |
| CN220367516U (en) | Projection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |