CN107654894B - Keel lamp with variable light-emitting angle - Google Patents

Keel lamp with variable light-emitting angle Download PDF

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Publication number
CN107654894B
CN107654894B CN201710830986.9A CN201710830986A CN107654894B CN 107654894 B CN107654894 B CN 107654894B CN 201710830986 A CN201710830986 A CN 201710830986A CN 107654894 B CN107654894 B CN 107654894B
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lamp
light
keel
angle
shaped
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CN107654894A (en
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贺成明
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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
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
    • 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
    • F21V29/54—Cooling arrangements using thermoelectric means, e.g. Peltier elements
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The invention belongs to the technical field of LED lamp illumination, and particularly relates to a keel lamp with a variable light-emitting angle, which comprises a keel, wherein a lamp groove is formed in the keel, a U-shaped lampshade is clamped in the lamp groove, a PCB (printed circuit board) strip is arranged at an opening of the U-shaped lampshade, a plurality of heat dissipation blocks are fixed on the top surface of the PCB strip, and a plurality of LED lamp beads are uniformly distributed on the bottom surface of the PCB strip; the bottom of the U-shaped lampshade is provided with a cylindrical Fresnel concave lens; the U-shaped lampshade is made of thermosensitive shape memory plastics, and the light-emitting angle of the keel lamp is a first light-emitting angle or a second light-emitting angle. The invention has the beneficial effects that: the light-emitting angle can be adjusted, so that excessive light is prevented from striking the wall, and energy is saved; in the installation preparation stage, the types of the U-shaped lamp shades with different light-emitting angles can be reduced, and the installation is convenient; the lighting angle can be flexibly adjusted on the installation site, and the troubles of logistics and storage are reduced; the LED lamp bead light source is suitable for linear light sources, and the circular Fresnel lens which corresponds to the LED lamp beads one by one does not need to be additionally installed.

Description

Keel lamp with variable light-emitting angle
Technical Field
The invention belongs to the technical field of LED lamp illumination, and particularly relates to a keel lamp with a variable light-emitting angle.
Background
With the development of science and technology, higher requirements are put forward on the technology and the process of a clean factory building. The clean factory building is the totally closed structure, needs indoor lighting, and the lamps and lanterns that are used for clean factory building illumination generally are called clean fossil fragments lamp, and the installation of clean fossil fragments lamp adopts ceiling type or embedded method usually, and embedded clean lamp common use size is 600X 1200mm, and it is big to occupy the ceiling space, hinders more FFU filter fan of installation, can not be used for the clean factory building of high cleanliness factor, can cause the dust to gather, leads to clean factory building cleanliness factor to descend.
When the existing keel lamp is installed, firstly, only a PCB (printed circuit board) batten component integrated with LED lamp beads is installed in a lamp groove; then clamping a common lampshade made of rubber on the inner wall of the lamp slot or the PCB ribbon board; finally, when the lamp shade is used, the lamp shade made of the soft material is easy to soften, deform or age under the influence of long-term high temperature, so that the bottom surface of the lamp shade is higher than the bottom surface of the keel, and the appearance is not attractive; a large gap is formed at the joint part between the lampshade and the keel, the sealing performance is reduced, and dust and other gathering objects in the lampshade easily enter a room to influence the cleanliness; even, the lampshade can be softened and fall out of the lamp groove, and finally the lamp is damaged and scrapped.
in addition, the circular Fresnel lens installed in the prior keel lamp is a thin lens installed in a sheet, has the characteristics of thinness, lightness, low cost and the like, and is often used in lighting products. However, the structure of the lens determines that the effect is equivalent to that of a conventional lens when only incident light is parallel light, and more stray light is generated when the incident light is a point light source similar to a single-row LED and the like. Meanwhile, because the Fresnel lens is not a continuous curved surface, the light intensity distribution of emergent light passing through the Fresnel lens is uneven, and bright and dark stripes are easily formed under the condition that the sawtooth width of the Fresnel lens is wide, so that visual fatigue is caused, and particularly the Fresnel lens is more obvious in a concave lens. Patent CN201010610610.5 discloses a lamp with a larger light-emitting angle by a circular fresnel concave lens, but the circular fresnel lens is an independent component and has higher cost; and the circular Fresnel concave lens can only be suitable for point light sources and is not suitable for the clean keel lamp of a linear light source.
In addition, at present, the structure of the lamp groove in the keel lamp is limited and is not changed, so that only one type of lamp shade can be installed in the lamp groove, and the included angle of emergent light is single. At positions such as corridor, hall and wall edge, the fossil fragments lamp of installation on the ceiling needs to carry out suitability ground according to different positions and selects the lamp shade that has different corresponding luminous angles to it is extravagant to avoid too much light to hit the wall and produce the energy, consequently, causes the lamp shade installation purchase of multiple different luminous angles very inconveniently easily.
Disclosure of Invention
the invention aims to overcome the defect that the Fresnel concave lens in the keel lamp in the prior art can only be suitable for a point light source and is not suitable for a linear light source; the lens and the lampshade are separately installed, so that the cost is high; the keel lamp needs to adaptively select the lampshades with different corresponding light-emitting angles according to different positions, and the lampshades with various different light-emitting angles are inconvenient to install and purchase, so that the circular Fresnel lens which is suitable for a linear light source and does not need to be additionally installed and corresponds to each LED lamp bead one by one is provided; the cylindrical Fresnel concave lens is integrally formed, so that the cost is low, and the installation and purchase are convenient; the light-emitting angle can be adjusted, so that excessive light is prevented from striking the wall, and energy is saved; in the installation preparation stage, the types of the U-shaped lamp shades with different luminous angles can be reduced, the installation is convenient, the luminous angles can be flexibly adjusted on the installation site, and the troublesome keel lamps with variable luminous angles in logistics and storage are reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows: a keel lamp with a variable light-emitting angle comprises a keel, wherein a lamp groove is formed in the bottom surface of the keel in a through manner, a U-shaped lampshade is clamped in the lamp groove, a PCB (printed circuit board) strip plate is arranged at the opening of the U-shaped lampshade along the length direction, a plurality of heat dissipation blocks for conducting heat conduction with the keel are fixed on the top surface of the PCB strip plate, a plurality of LED lamp beads are uniformly distributed on the bottom surface of the PCB strip plate, and each LED lamp bead is positioned in the opening of the U-shaped lampshade; the bottom of the U-shaped lampshade, which faces the LED lamp beads, is a cylindrical Fresnel concave lens, the sawtooth surface of the cylindrical Fresnel concave lens faces the LED lamp beads, and the plane of the cylindrical Fresnel concave lens is flush with the bottom surface of the keel; the U-shaped lampshade is made of thermosensitive shape memory plastic, the light-emitting angle of the keel lamp is a first light-emitting angle or a second light-emitting angle, and the first light-emitting angle is the light-emitting angle of the keel lamp when the ambient temperature of the cylindrical Fresnel concave lens is lower than the deformation temperature; the second light-emitting angle is the light-emitting angle of the keel lamp when the ambient temperature of the cylindrical Fresnel concave lens is higher than the deformation temperature.
The U-shaped lampshade made of the thermosensitive shape memory plastic is characterized in that when the ambient temperature is lower than the deformation temperature, the memory plastic is in a first luminous angle of a normal temperature state, namely the U-shaped lampshade is formed; when the ambient temperature is higher than the deformation temperature, the memory plastic deforms to a second lighting angle in a high-temperature state. The U-shaped lampshade is made of elastic materials, the light emitting surface is horizontal, and the light emitting surface is a cylindrical Fresnel concave lens. When the ambient temperature of the cylindrical Fresnel concave lens is lower than the deformation temperature, the conical surface and the plane of the ith sawtooth-shaped groove from the center of the cylindrical Fresnel concave lensAt an angle ofn is the number of the sawtooth-shaped grooves of the cylindrical Fresnel concave lens, and i is 1 to n. According to the imaging formulaWhere ρ isiDistance r from light source to i-th sawtooth groove0Distance from lens center to image point, f ═ R2V (m x λ), where R lens radius, m is the number of wavelength bands, and λ is the wavelength of the incident light. When the ambient temperature of the cylindrical Fresnel concave lens is higher than the deformation temperature, the angle between each conical surface and each plane of the lens isWherein, X means that when the ambient temperature of the cylindrical Fresnel concave lens is higher than the deformation temperature, the width of the ith sawtooth-shaped groove is expanded to be X times of the original width, and the height of the ith sawtooth-shaped groove is changed to be 1/X times of the original height. When the LED lamp is installed, the number of the heat dissipation blocks required by the temperature of the environment can be known according to the required light emitting angle of the installed position, so that the light emitting angle of the keel lamp passing through the cylindrical Fresnel concave lens, namely the first light emitting angle or the second light emitting angle, can be adjusted in advance according to different heat dissipating capacities, the light emitting angle required by the installation position can be adjusted adaptively, excessive light is prevented from striking the wall, and energy is saved. Therefore, in the installation preparation stage, the invention can reduce the types of the U-shaped lamp shades with different light-emitting angles, is convenient to install and is not easy to be installed wrongly; the lighting angle can be flexibly adjusted on the installation site, and the troubles of logistics and storage are reduced.
in addition, the cylindrical Fresnel concave lens is integrally formed on the U-shaped lamp cover, the U-shaped lamp cover is clamped in the lamp groove, the structure is compact, the cylindrical Fresnel concave lens can be suitable for the keel lamp of the linear light source, the circular Fresnel lenses corresponding to the LED lamp beads one by one do not need to be additionally installed, the installation is convenient, and the cylindrical Fresnel concave lens is integrally formed on the U-shaped lamp cover, so that the material cost and the installation cost are reduced. The cylindrical Fresnel concave lens has a larger light-emitting angle, and can effectively increase the light irradiation area of the lamp even if the lamp groove is narrow.
Preferably, the U-shaped lampshade is made of heat-sensitive shape memory plastic prepared by melting and blending PVDF and ACP, wherein the content of PVDF is 40 wt% -50 wt%, the deformation temperature T of the U-shaped lampshade is 45 degrees, the light-emitting angle of the cylindrical Fresnel concave lens when the actual temperature of the U-shaped lampshade is less than 45 degrees is 100 degrees, and the light-emitting angle of the cylindrical Fresnel concave lens when the actual temperature of the U-shaped lampshade is more than or equal to 45 degrees is 130 degrees. When the lamp is installed, the number of the radiating blocks is adjusted in advance, so that the radiating efficiency is adjusted, the ambient temperature of the working state of the U-shaped lampshade is preset, the luminous angle is adjusted to 130 degrees or the original 100 degrees is maintained, the sensitivity is high, and the automatic adjustment is convenient.
Furthermore, the radiating blocks are adhered or inserted on the top surface of the PCB ribbon board, so that the PCB ribbon board is convenient to disassemble, and the number of the radiating blocks is adjusted to change the light-emitting angle when the PCB ribbon board is convenient for subsequent maintenance.
Furthermore, a heat conduction channel and a cooling channel communicated with cooling fluid are arranged in the keel in a through manner, a semiconductor refrigerator is installed in the heat conduction channel, the heat conduction channel is communicated with the bottom of the lamp groove through a heat conduction through hole, the heat dissipation block penetrates through the heat conduction through hole to be attached to the cold end surface of the semiconductor refrigerator, and the hot end surface of the semiconductor refrigerator is attached to the outer wall of the cooling channel; wherein, the cooling channel can circulate cooling liquid such as cooling water. The invention can also radiate the heat dissipation block through the semiconductor refrigerator, and the heat dissipation efficiency is high; therefore, the invention can automatically adjust the heat dissipation capacity of the heat dissipation block by controlling and adjusting the refrigeration capacity of the semiconductor refrigerator from the outside, thereby realizing the environment temperature of the U-shaped lampshade, finally achieving the effect of automatically adjusting the light-emitting angle of the cylindrical Fresnel concave lens, being suitable for indoor personnel to operate the requirements of different light angles and being very convenient.
Furthermore, the cooling channel is provided with radiating fins on the inner wall in a through manner, so that the heat exchange area is large, and the radiating effect is better.
Specifically, the both sides of PCB slat are fixed with the pterygoid lamina, each LED lamp pearl is located in the trough-like structure that two pterygoid laminas and PCB slat constitute, every pterygoid lamina all leads to long being provided with the first pawl of multirow on the lateral surface towards the light trough cell wall, it is provided with the bar through-hole to lead to long on the both sides outer wall of U type lamp shade, the bar through-hole one-to-one ground of U type lamp shade both sides matches the cover and establishes on the first pawl on two pterygoid laminas, it is provided with multirow second pawl all to lead to long on two cell walls of light trough, the reverse joint of first pawl and second. When the U-shaped lampshade is installed, the U-shaped lampshade can be sleeved on the two wing plates by sleeving the strip-shaped through holes on the first inverted teeth; then, the first inverted teeth are reversely clamped on the second inverted teeth, so that an assembly body which is assembled by the groove-shaped structures formed by the two wing plates and the PCB ribbon boards and the U-shaped lampshade is clamped in the lamp groove, the installation is firm, and the lamp is not easy to fall off; when the assembly body is disassembled, the assembly body is only required to be drawn out from the opening at one end of the keel, and the assembly and disassembly are convenient. In addition, when in use, the installation is firm and the device is not easy to be separated. The U-shaped lampshade made of the soft material is also always clamped between the first inverted tooth and the second inverted tooth and is firmly sleeved on the first inverted tooth through the strip-shaped through hole; even if the U-shaped lampshade is softened and deformed under the action of long-term high temperature, the bottom surface of the U-shaped lampshade is always flush with the bottom surface of the keel, and the appearance is attractive;
No gap can be produced between the U-shaped lampshade and the keel, the sealing performance is excellent, the dust and other gathering objects in the U-shaped lampshade can not enter the room, and the cleanliness is high. In addition, the U-shaped lampshade can not fall out of the lamp groove, and the service life of the lamp is long.
Further, lead to long being provided with two side chambeies in fossil fragments, two side chambeies set up in the light trough both sides relatively, and the side chamber leads to the groove through the clearance and communicates the light trough, and the width that the groove was led to in the clearance is less than the chamber wall interval that the side chamber is located the groove both sides are led to in the clearance, and the second pawl distributes in the both sides that the groove is led to in the clearance. According to the invention, the two sides of the gap through groove are provided with certain elastic cavity walls, and the second inverted teeth are distributed on the cavity walls at the two sides of the gap through groove, so that the first inverted teeth can be smoothly clamped on the second inverted teeth, the clamping resistance is reduced, and the operation is convenient.
Furthermore, L-shaped clamping pins are arranged on two groove walls of the lamp groove in a through-length mode, the two L-shaped clamping pins are located at the notch of the lamp groove, the L-shaped clamping pins and the groove walls of the lamp groove form L-shaped bayonets, U-shaped flanges are fixed on two sides of the cylindrical Fresnel concave lens, and the two U-shaped flanges are sleeved on the L-shaped clamping pins through the L-shaped bayonets; this joint structure can further fix U type lamp shade, and the joint position of the both sides of the concave lens of the fresnel of cylinder can guarantee effectively that U type lamp shade and lamp groove oral area laminating are sealed simultaneously, can further prevent effectively that the dust of inside etc. from gathering the thing and getting into indoorly, and the leakproofness is splendid, and the cleanliness factor is higher.
Furthermore, the outer side surface of the U-shaped flanging sleeved on the L-shaped clamping foot is flush with the plane of the cylindrical Fresnel concave lens. The bottom surface of the U-shaped lampshade can be always flush with the bottom surface of the keel, so that the appearance is attractive.
Preferably, the keel is a T6061 profile, and each groove, hole and cavity can be integrally formed on the T6061 profile, so that the T6061 keel is convenient to manufacture.
preferably, the PCB strip plate is an aluminum substrate or a copper substrate, and has high thermal conductivity.
Furthermore, two surfaces of the cylindrical Fresnel concave lens are respectively coated with a diffusion film, wherein the haze of the diffusion film in the lamp groove is higher than that of the diffusion film outside the lamp groove. The diffusion film in the lamp groove can effectively avoid the cylindrical Fresnel concave lens to generate disordered astigmatism, the diffusion film outside the lamp groove can effectively prevent the light-emitting surface of the cylindrical Fresnel concave lens from being scratched, and the light-emitting is uniform.
Furthermore, the diffusion barrier in the lamp groove is adsorbed on the inner surface of the cylindrical Fresnel concave lens through static electricity, so that the laminating is firm, and the installation is convenient.
The keel lamp with the variable light-emitting angle has the beneficial effects that:
1. When the Fresnel lens is installed, the number of the heat dissipation blocks required by the temperature of the environment can be known according to the required light emitting angle of the installed position, so that the light emitting angle of the cylindrical Fresnel concave lens, namely the first light emitting angle or the second light emitting angle, can be adjusted in advance according to different heat dissipating capacities, the light emitting angle required by the installation position can be adjusted adaptively, excessive light rays are prevented from striking the wall, and energy is saved;
2. in the installation preparation stage, the invention can reduce the types of the U-shaped lamp shades with different light-emitting angles, is convenient to install and is not easy to be installed wrongly; the lighting angle can be flexibly adjusted on the installation site, and the troubles of logistics and storage are reduced;
3. The cylindrical Fresnel concave lens is integrally formed on the U-shaped lamp cover, the U-shaped lamp cover is clamped in the lamp groove, the structure is compact, the cylindrical Fresnel concave lens can be suitable for the keel lamp of the linear light source, the circular Fresnel lenses which correspond to the LED lamp beads one by one do not need to be additionally installed, the installation is convenient, and the cylindrical Fresnel concave lens is integrally formed on the U-shaped lamp cover, so that the material cost and the installation cost are reduced;
4. The cylindrical Fresnel concave lens has a larger light-emitting angle, and even if the lamp trough is narrow, the cylindrical Fresnel concave lens can also effectively increase the light irradiation area of the lamp;
5. The invention can also automatically adjust the heat dissipation capacity of the heat dissipation block by controlling and adjusting the refrigeration capacity of the semiconductor refrigerator externally, thereby realizing the environment temperature of the U-shaped lampshade, finally achieving the effect of automatically adjusting the light-emitting angle of the cylindrical Fresnel concave lens, being suitable for indoor personnel to operate the requirements of different light angles and being very convenient;
6. When in use, the installation is firm and is not easy to be separated; the U-shaped lampshade made of the soft material is also always clamped between the first inverted tooth and the second inverted tooth and is firmly sleeved on the first inverted tooth through the strip-shaped through hole; even if the U-shaped lampshade is softened and deformed under the action of long-term high temperature, the bottom surface of the U-shaped lampshade is always flush with the bottom surface of the keel, so that the outer part is attractive; gaps cannot be generated between the U-shaped lampshade and the keels, the sealing performance is excellent, dust and other gathering objects in the lamp cannot enter a room, and the cleanliness is high; in addition, the U-shaped lampshade can not fall out of the lamp groove, and the service life of the lamp is long;
The U-shaped lamp shade can be further fixed to the joint structure of U type turn-ups and L type card foot, and the joint position of the both sides of cylinder fresnel concave lens can guarantee effectively that U type lamp shade and the laminating of lamp groove oral area are sealed simultaneously, can further prevent effectively that inside dust etc. from gathering the thing and getting into indoorly, and the leakproofness is splendid, and the cleanliness factor is higher.
drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a full cross-sectional view of a variable angle keel lamp of the invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
Fig. 3 is a partially enlarged view of a portion B in fig. 2;
Fig. 4 is a layout view of the heat sink block of the keel lamp with variable light-emitting angle of the invention on the PCB strip.
Wherein, 1, keel; 2. a lamp slot; 3, U-shaped lampshade 301, strip-shaped through hole; 4, PCB ribbon board; 5. a heat dissipating block; 6, LED lamp beads; 7. a cylindrical Fresnel concave lens; 8. a heat conducting channel; 9. a cooling channel; 10. a semiconductor refrigerator; 11. a heat dissipating fin; 12. a wing plate; 13. a first pawl; 14. a second pawl; 15. a lateral cavity; 16. a clearance through groove; an L-shaped clamping pin; 18, an L-shaped bayonet; 19, U-shaped flanging; 20. a thermally conductive via.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The first embodiment is as follows:
As shown in fig. 1-4, a first embodiment of the keel lamp with a variable light-emitting angle of the invention comprises a keel 1, the keel 1 is provided with a light groove 2 on the bottom surface, a U-shaped lampshade 3 is clamped in the light groove 2, a PCB lath 4 is arranged at the opening of the U-shaped lampshade 3 along the length direction, a plurality of heat dissipation blocks 5 for conducting heat with the keel 1 are fixed on the top surface of the PCB lath 4, a plurality of LED lamp beads 6 are uniformly distributed on the bottom surface of the PCB lath 4, and each LED lamp bead 6 is positioned in the opening of the U-shaped lampshade 3; the bottom of the U-shaped lampshade 3, which faces the LED lamp beads 6, is provided with a cylindrical Fresnel concave lens 7, the sawtooth surface of the cylindrical Fresnel concave lens 7 faces the LED lamp beads 6, and the plane of the cylindrical Fresnel concave lens 7 is flush with the bottom surface of the keel 1; the U-shaped lampshade 3 is made of thermosensitive shape memory plastics; the light-emitting angle of the keel lamp is a first light-emitting angle or a second light-emitting angle, and the first light-emitting angle is the light-emitting angle of the keel lamp when the environment temperature of the cylindrical Fresnel concave lens 7 is lower than the deformation temperature; the second light-emitting angle is the light-emitting angle of the keel lamp when the ambient temperature of the cylindrical Fresnel concave lens 7 is higher than the deformation temperature.
The U-shaped lampshade 3 made of the thermosensitive shape memory plastic is characterized in that when the ambient temperature is lower than the deformation temperature, the memory plastic is in a first luminous angle of a normal temperature state, namely the U-shaped lampshade 3 is formed; when the ambient temperature is higher than the deformation temperature, the memory plastic deforms to a second lighting angle in a high-temperature state. The U-shaped lampshade 3 is made of elastic materials, the light emitting surface is horizontal, and the light emitting surface is a cylindrical Fresnel concave lens 7. When the environment temperature of the cylindrical Fresnel concave lens 7 is lower than the deformation temperature, the angle between the conical surface and the plane of the ith sawtooth-shaped groove from the center of the cylindrical Fresnel concave lens 7 isn is the number of the zigzag grooves of the cylindrical fresnel concave lens 7, and i is 1 to n. According to the imaging formulaWhere ρ isidistance r from light source to i-th sawtooth groove0Distance from lens center to image point, f ═ R2V (m x λ), where R lens radius, m is the number of wavelength bands, and λ is the wavelength of the incident light. When the environment temperature of the cylindrical Fresnel concave lens 7 is higher than the deformation temperature, the angle between each conical surface and each plane of the lens iswherein, X means that when the ambient temperature of the cylindrical Fresnel concave lens 7 is higher than the deformation temperature, the width of the ith sawtooth-shaped groove is expanded to be X times of the original width, and the height of the ith sawtooth-shaped groove is changed to be 1/X times of the original height. When the LED lamp is installed, the number of the heat dissipation blocks 5 required by the temperature of the environment can be known according to the required light emitting angle of the installed position, so that the light emitting angle of the keel lamp passing through the cylindrical Fresnel concave lens 7, namely the first light emitting angle or the second light emitting angle, can be adjusted in advance according to different heat dissipation amounts during installation, the light emitting angle required by the installation position can be adjusted adaptively, and excessive light rays are avoidedAnd the energy is saved when the device is hit on a wall. Therefore, in the installation preparation stage, the types of the U-shaped lamp shades 3 with different light-emitting angles can be reduced, the installation is convenient, and the wrong installation is not easy; the lighting angle can be flexibly adjusted on the installation site, and the troubles of logistics and storage are reduced.
In addition, the cylindrical Fresnel concave lens 7 of the embodiment is integrally formed on the U-shaped lamp shade 3, the U-shaped lamp shade 3 is connected in the lamp groove 2 in a clamped mode, the structure is compact, the cylindrical Fresnel concave lens 7 can be suitable for the keel lamp of the linear light source of the embodiment, the circular Fresnel lenses of the LED lamp beads 6 in one-to-one correspondence are not required to be additionally installed, the installation is convenient, and the cylindrical Fresnel concave lens 7 is integrally formed on the U-shaped lamp shade 3, so that the material cost and the installation cost are reduced. The cylindrical Fresnel concave lens 7 of the embodiment has a larger light-emitting angle, and even if the lamp trough 2 is narrow, the cylindrical Fresnel concave lens 7 can also effectively increase the light irradiation area of the lamp.
Preferably, the U-shaped lampshade 3 is made of a heat-sensitive shape memory plastic prepared by melting and blending PVDF and ACP, wherein the PVDF content is 40 wt% to 50 wt%, the deformation temperature T of the U-shaped lampshade 3 is 45 °, the light-emitting angle of the cylindrical fresnel concave lens 7 when the actual temperature of the U-shaped lampshade 3 is less than 45 ° is 100 °, and the light-emitting angle of the cylindrical fresnel concave lens 7 when the actual temperature of the U-shaped lampshade 3 is greater than or equal to 45 ° is 130 °. When the lamp is installed, the number of the radiating blocks 5 is adjusted in advance, so that the radiating efficiency is adjusted, the ambient temperature of the working state of the U-shaped lampshade 3 is preset, the luminous angle is adjusted to 130 degrees or the original 100 degrees is maintained adaptively and automatically, the sensitivity is high, and the automatic adjustment is convenient.
Furthermore, the radiating blocks 5 are adhered or inserted on the top surface of the PCB ribbon board 4, so that the disassembly is convenient, and when the follow-up maintenance is convenient, the number of the radiating blocks 5 is adjusted to change the light-emitting angle.
Furthermore, a heat conduction channel 8 and a cooling channel 9 through which cooling fluid flows are arranged in the keel 1 in a long manner, a semiconductor refrigerator 10 is installed in the heat conduction channel 8, the heat conduction channel 8 is communicated with the bottom of the lamp groove 2 through a heat conduction through hole 20, the heat dissipation block 5 penetrates through the heat conduction through hole 20 to be attached to the cold end face of the semiconductor refrigerator 10, and the hot end face of the semiconductor refrigerator 10 is attached to the outer wall of the cooling channel 9; the cooling passage 9 may be filled with a cooling liquid such as cooling water. The embodiment can also radiate the heat dissipation block 5 through the semiconductor refrigerator 10, so that the heat dissipation efficiency is high; therefore, the present embodiment can also automatically adjust the heat dissipation capacity of the heat dissipation block 5 by externally controlling and adjusting the refrigeration capacity of the semiconductor refrigerator 10, thereby achieving the ambient temperature of the U-shaped lampshade 3, and finally achieving the effect of automatically adjusting the light emission angle of the cylindrical fresnel concave lens 7.
Further, the cooling channel 9 is provided with the radiating fins 11 on the inner wall in a through-length mode, so that the heat exchange area is large, and the radiating effect is better.
specifically, pterygoid lamina 12 is fixed with in the both sides of PCB slat 4, each LED lamp pearl 6 is located in the trough-like structure that two pterygoid laminas 12 and PCB slat 4 constitute, every pterygoid lamina 12 is provided with the first pawl 13 of multirow all leading to long on the lateral surface of 2 cell walls of light trough, it is provided with bar through-hole 301 to lead to long on the both sides outer wall of U type lamp shade 3, the bar through-hole 301 one-to-one ground of 3 both sides of U type lamp shade matches the cover and establishes on the first pawl 13 on two pterygoid laminas 12, all leading to long on two cell walls of light trough 2 is provided with multirow second pawl 14, first pawl 13 and the reverse joint of second pawl 14. During installation, the first inverted tooth 13 is sleeved with the strip-shaped through hole 301, so that the U-shaped lampshade 3 is sleeved on the two wing plates 12; then, the first inverted teeth 13 are reversely clamped on the second inverted teeth 14, so that the groove-shaped structures formed by the two wing plates 12 and the PCB strip plates 4 and the U-shaped lampshade 3 are assembled into an assembly body which is clamped in the lamp groove 2, the assembly is firm in installation and is not easy to separate; when the assembly body is disassembled, the assembly body is only required to be drawn out from the opening at one end of the keel 1, and the assembly and disassembly are convenient. In addition, when in use, the installation is firm and the device is not easy to be separated. The U-shaped lampshade 3 made of the soft material of this embodiment is also always clamped between the first inverted tooth 13 and the second inverted tooth 14, and is firmly sleeved on the first inverted tooth 13 through the strip-shaped through hole 301; even if the U-shaped lampshade 3 is softened and deformed under the action of long-term high temperature, the bottom surface of the U-shaped lampshade 3 of the embodiment is always flush with the bottom surface of the keel 1, and the exterior is attractive; no gap can be produced between U type lamp shade 3 and fossil fragments 1, and the leakproofness is fabulous, and the collection such as inside dust can not get into indoorly, and the cleanliness factor is high. In addition, the U-shaped lampshade 3 can not fall out of the lamp groove 2, and the service life of the lamp is long.
further, lead to long being provided with two side chambeies 15 in fossil fragments 1, two side chambeies 15 set up in light trough 2 both sides relatively, and side chamber 15 leads to groove 16 intercommunication light trough 2 through the clearance, and the width that the groove 16 was led to in the clearance is less than the chamber wall interval that side chamber 15 is located the groove 16 both sides that lead to in the clearance, and second pawl 14 distributes in the both sides that the groove 16 was led to in the clearance. The groove 16 both sides are led to in the clearance of this embodiment have certain elastic chamber wall, and second pawl 14 distributes on the chamber wall of the groove 16 both sides are led to in the clearance to be convenient for first pawl 13 smoothly the joint on second pawl 14, reduced joint resistance, convenient operation.
furthermore, two groove walls of the lamp groove 2 are provided with L-shaped clamping feet 17 throughout, the two L-shaped clamping feet 17 are positioned at the groove opening of the lamp groove 2, the L-shaped clamping feet 17 and the groove walls of the lamp groove 2 form an L-shaped bayonet 18, two sides of the cylindrical Fresnel concave lens 7 are both fixed with U-shaped flanges 19, and the two U-shaped flanges 19 are sleeved on the L-shaped clamping feet 17 through the L-shaped bayonet 18; this joint structure can further fix U type lamp shade 3, and the joint position of the both sides of cylindrical fresnel concave lens 7 can guarantee effectively that U type lamp shade 3 and the laminating of 2 oral areas of light trough are sealed simultaneously, can further prevent effectively that the interior dust etc. from gathering the thing and getting into indoorly, and the leakproofness is splendid, and the cleanliness factor is higher.
Further, the outer side surface of the U-shaped flange 19 sleeved on the L-shaped clamping leg 17 is flush with the plane of the cylindrical Fresnel concave lens 7. The bottom surface of the U-shaped lampshade 3 of the embodiment can be flush with the bottom surface of the keel 1 all the time, and the exterior is attractive.
Preferably, the keel 1 is a T6061 profile, and each groove, hole and cavity can be integrally formed on the T6061 profile, so that the manufacturing is convenient.
preferably, the PCB strip 4 is an aluminum substrate or a copper substrate, and has high thermal conductivity.
Further, a diffusion film is attached to each of the two surfaces of the cylindrical fresnel concave lens 7, wherein the haze of the diffusion film inside the lamp groove 2 is higher than that of the diffusion film outside the lamp groove 2. The diffusion film in the lamp groove 2 can effectively avoid the cylindrical Fresnel concave lens 7 from generating disordered astigmatism, and the diffusion film outside the lamp groove 2 can effectively prevent the light-emitting surface of the cylindrical Fresnel concave lens 7 from being scratched, so that light is emitted uniformly.
Further, the diffusion barrier in the lamp groove 2 is adsorbed on the inner surface of the cylindrical Fresnel concave lens 7 through static electricity, so that the laminating is firm, and the installation is convenient.
Furthermore, the diffusion barrier outside the lamp groove 2 is bonded or thermally pressed on the outer surface of the cylindrical Fresnel concave lens 7 through OCA optical cement, so that the bonding is firm and the installation is convenient.
Preferably, the diffusion film in the lamp vessel 2 is 70% to 95%.
Preferably, the color of the U-shaped lampshade 3 is white or yellow, and the luminous effect is good. Wherein, when the color of the U-shaped lampshade 3 is yellow, the light with the wavelength below 500nm can be filtered.
furthermore, the two wing plates 12 form a bell mouth shape on the PCB strip plate 4, so that light rays can be conveniently diffused and emitted, and the light condensation effect is good.
Preferably, the angle between the two wings 12 is 30 °.
Furthermore, the two wing plates 12 are adhered with a visible light reflecting paste on the reflecting surface in the lamp groove 2, so that the light gathering effect is better.
Alternatively, the reflecting surface of the two wing plates 12 in the lamp groove 2 is adhered with an infrared reflecting film, so that the reflecting effect is good.
In addition, the present embodiment has other technical effects as follows:
(1) The cylindrical Fresnel concave lens 7 is adopted, the production can be realized by using a rolling process, and compared with a molded circular Fresnel lens, the production cost is low and the production efficiency is high.
(2) The light-emitting surface of the lampshade is rolled into the cylindrical Fresnel concave lens 7, so that the material and the assembly cost can be saved.
(3) Through the use of the cylindrical fresnel concave lens 7, the keel lamp of the present embodiment can realize a large projection angle on an extremely compact lamp.
(4) Through the use of the diffusion film in the lamp groove 2, the point light source is converted into the surface light source, the problem that stray light easily occurs when the point light source irradiates the cylindrical Fresnel concave lens 7 is solved, and glare is reduced.
(5) And the diffusion film outside the lamp groove 2 can be used, so that bright and dark stripes generated by the cylindrical Fresnel concave lens 7 are avoided, and the illumination uniformity is improved.
(6) The low-haze diffusion film attached to the outside of the U-shaped lampshade 3 plays a role in light ray uniformization and can protect the cylindrical Fresnel concave lens 7 from being scratched in the transportation process.
(7) The connection structure of the U-shaped lampshade 3 and the lamp trough 2 completely seals the lamp, the lamp is waterproof and dustproof, the factory environment is not influenced by the external environment, and the indoor cleanliness is improved.
Example two:
The difference between the embodiment and the first embodiment is that the included angle between the two wing plates 12 is 20 degrees, the surface of the U-shaped lampshade 3 is a frosted surface, the color is yellow, light with a wave band below 500nm can be filtered out, the U-shaped lampshade can be used for microelectronic workshops, liquid crystal panel production workshops and the like, and the PCB strip plate 4 is made of a copper substrate. Other structures and installation methods are the same as those of the first embodiment.
It should be understood that the above-described specific embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Obvious variations or modifications which are within the spirit of the invention are possible within the scope of the invention.

Claims (10)

1. the utility model provides a fossil fragments lamp that luminous angle is changeable which characterized in that: the LED lamp comprises a keel (1), wherein a light groove (2) is formed in the bottom surface of the keel (1) in a through-length mode, a U-shaped lampshade (3) is connected in the light groove (2) in a clamping mode, a PCB (printed circuit board) strip plate (4) is arranged at an opening of the U-shaped lampshade (3) along the length direction, a plurality of heat dissipation blocks (5) used for conducting heat with the keel (1) are fixed on the top surface of the PCB strip plate (4), a plurality of LED lamp beads (6) are uniformly distributed on the bottom surface of the PCB strip plate (4), and each LED lamp bead (6) is located in the opening of the U-shaped lampshade (3); the bottom of the U-shaped lampshade (3), which faces the LED lamp beads (6), is a cylindrical Fresnel concave lens (7), the sawtooth surface of the cylindrical Fresnel concave lens (7) faces the LED lamp beads (6), and the plane of the cylindrical Fresnel concave lens (7) is flush with the bottom surface of the keel (1); the U-shaped lampshade (3) is made of thermosensitive shape memory plastic; the luminous angle of the keel lamp is a first luminous angle or a second luminous angle, and the first luminous angle is the luminous angle of the keel lamp when the environment temperature of the cylindrical Fresnel concave lens (7) is lower than the deformation temperature; the second light-emitting angle is the keel lamp light-emitting angle when the ambient temperature of the cylindrical Fresnel concave lens (7) is higher than the deformation temperature;
The cylindrical Fresnel concave lens light-emitting angle is 100 degrees when the actual temperature of the U-shaped lampshade is less than 45 degrees, the cylindrical Fresnel concave lens light-emitting angle is 130 degrees when the actual temperature of the U-shaped lampshade is more than or equal to 45 degrees, the number of the radiating blocks is adjusted in advance when the radiating blocks are installed, the required ambient temperature is known according to the required light-emitting angle of the installation position, the number of the radiating blocks required by the ambient temperature is known, the number of the radiating blocks can be adjusted in advance according to the radiating capacity, the ambient temperature of the working state of the U-shaped lampshade is preset, and the light-emitting angle is adjusted to 130 degrees or 100 degrees.
2. The keel lamp with variable lighting angle of claim 1, wherein: the U-shaped lampshade (3) is made of heat-sensitive shape memory plastic prepared by melting and blending PVDF and ACP, wherein the content of PVDF is 40-50 wt%, the deformation temperature T of the U-shaped lampshade (3) is 45 degrees, the first light-emitting angle is 100 degrees, and the second light-emitting angle is 130 degrees.
3. The keel lamp with variable lighting angle according to claim 1 or 2, wherein: the heat dissipation block (5) is adhered or inserted on the top surface of the PCB ribbon board (4).
4. The keel lamp with variable lighting angle of claim 3, wherein: still lead to long cooling channel (9) that is provided with heat conduction passageway (8) and leads to cooling fluid in fossil fragments (1), install semiconductor refrigerator (10) in heat conduction passageway (8), heat conduction passageway (8) are through the tank bottom of heat conduction through-hole (20) intercommunication light trough (2), radiating block (5) pass heat conduction through-hole (20) and the laminating of the cold junction face of semiconductor refrigerator (10), the hot junction face laminating of semiconductor refrigerator (10) is on the outer wall of cooling channel (9).
5. the keel lamp with variable lighting angle of claim 4, wherein: and the cooling channel (9) is provided with radiating fins (11) on the inner wall in a through long way.
6. The keel lamp with variable lighting angle of claim 1, wherein: the both sides of PCB slat (4) are fixed with pterygoid lamina (12), and in the groove-shaped structure that two pterygoid laminas (12) and PCB slat (4) constitute was located in each LED lamp pearl (6), every pterygoid lamina (12) were all LED to long on the lateral surface towards light trough (2) cell wall and are provided with first pawl (13) of multirow, it is provided with bar through-hole (301) to lead to long on the both sides outer wall of U type lamp shade (3), bar through-hole (301) one-to-one ground of U type lamp shade (3) both sides is matchd the cover and is established on first pawl (13) on two pterygoid laminas (12), it is provided with multirow second pawl (14) all to lead to long on two cell walls of light trough (2), first pawl (13) and the reverse joint of second pawl (14).
7. The keel lamp with variable lighting angle of claim 6, wherein: lead to long being provided with two side chamber (15) in fossil fragments (1), two side chamber (15) set up in light trough (2) both sides relatively, side chamber (15) lead to groove (16) intercommunication light trough (2) through the clearance, the width that the groove (16) was led to in the clearance is less than side chamber (15) and is located the chamber wall interval that the groove (16) both sides were led to in the clearance, second pawl (14) distribute in the both sides that the groove (16) was led to in the clearance.
8. The keel lamp with variable lighting angle of claim 6 or 7, wherein: lead to on two cell walls of light trough (2) long and be provided with L type bayonet socket (17), two L type bayonet sockets (17) are located the notch department of light trough (2), L type bayonet socket (17) with the cell wall of light trough (2) constitutes L type bayonet socket (18), the both sides of cylinder fresnel concave lens (7) all are fixed with U type turn-ups (19), and two U type turn-ups (19) are located on L type bayonet socket (17) through L type bayonet socket (18) cover.
9. The keel lamp with variable lighting angle of claim 8, wherein: the outer side surface of the U-shaped flanging (19) sleeved on the L-shaped clamping pin (17) is flush with the plane of the cylindrical Fresnel concave lens (7).
10. The keel lamp with variable lighting angle of claim 1, wherein: the keel (1) is a T6061 section bar.
CN201710830986.9A 2017-09-15 2017-09-15 Keel lamp with variable light-emitting angle Active CN107654894B (en)

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