WO2022166269A1 - Led直管灯 - Google Patents

Led直管灯 Download PDF

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Publication number
WO2022166269A1
WO2022166269A1 PCT/CN2021/126799 CN2021126799W WO2022166269A1 WO 2022166269 A1 WO2022166269 A1 WO 2022166269A1 CN 2021126799 W CN2021126799 W CN 2021126799W WO 2022166269 A1 WO2022166269 A1 WO 2022166269A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamp
tube
lamp tube
sleeve
led
Prior art date
Application number
PCT/CN2021/126799
Other languages
English (en)
French (fr)
Inventor
蒋江峰
蒲纪忠
Original Assignee
晨辉光宝科技股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN202120324282.6U external-priority patent/CN214275387U/zh
Priority claimed from CN202121317565.4U external-priority patent/CN215061388U/zh
Application filed by 晨辉光宝科技股份有限公司 filed Critical 晨辉光宝科技股份有限公司
Publication of WO2022166269A1 publication Critical patent/WO2022166269A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F21K9/275—Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • 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
    • 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
    • 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]

Definitions

  • the present application relates to a lighting appliance, in particular to an LED straight tube lamp.
  • the LED straight tube lamp includes a lamp tube, end caps fixed at both ends of the lamp tube, a driving power source located in the lamp tube, and an LED module located in the lamp tube and electrically connected to the drive power source.
  • the end cover is provided with two terminals, each terminal is connected with the driving power supply, and the terminal is inserted into the lamp socket to communicate with the external power supply.
  • lamps with heat dissipation function are now introduced on the market.
  • two lamp caps respectively arranged at opposite ends of the lamp tube, a power supply arranged in the lamp cap, and an LED lamp board arranged in the lamp tube.
  • the LED lamp board is electrically connected, and the lamp cap includes a tubular side wall and an end wall.
  • the end wall is provided with at least one hole for heat dissipation, so that the inner space of the lamp cap is communicated with the outside.
  • the present application provides an LED straight tube lamp that is convenient for heat dissipation, which solves the problem of unsatisfactory heat dissipation effect in the existing LED lamp.
  • the LED straight tube lamp includes a lamp tube and end caps fixed at both ends of the lamp tube, the end caps include a sleeve on the outer periphery of the lamp tube and a sealing plate fixed at one axial end of the sleeve, so that the end caps It has a closed end and an open end, and is characterized in that the end of the lamp tube is inserted into the end cap on the corresponding side, and there is a heat dissipation gap between the end cap and the inner wall of the end cap, and the interior of the lamp tube is dissipated through the heat dissipation The gap communicates with the outside of the lamp tube.
  • each optional method can be independently implemented for the above overall solution.
  • the combination can also be a combination of multiple optional ways.
  • the sleeve is provided with a limit step that limits the axial movement of the lamp tube, the end face of the lamp tube and the limit step are partially abutted, and the spaced portion constitutes a first gap.
  • the limiting step is provided with a plurality of protrusions distributed along the circumferential direction, and is partially offset with the lamp tube by the plurality of protrusions.
  • the inner wall of the sleeve is provided with a plurality of ribs that extend along the axial direction of the lamp tube and are supported on the lamp tube, forming a second gap communicating with the first gap between the sleeve and the outer wall of the lamp tube.
  • the rib starts from the limiting step and extends axially toward the open end of the sleeve.
  • the radial dimension of the rib is 0.2-2 mm.
  • glue is used to fix the lamp tube and the end cap.
  • the LED straight tube lamp is further provided with a light bar and a driving power supply
  • the light bar is composed of a substrate and LED lamp beads arranged on the substrate, and the driving power supply and the light bar are electrically connected.
  • the application also provides another LED straight tube lamp, including:
  • a limit step is set in the end cap, the end of the lamp tube is inserted into the end cap on the corresponding side, and abuts against the limit step through the adhesive material fixed, the limit step has a limit surface abutting against the end of the lamp tube, and the limit surface is a rough surface structure;
  • the LED light bar installed in the light tube, the LED light bar includes a substrate and LED lamp beads fixed on the substrate;
  • a driving power supply that is electrically connected to the LED light bar.
  • the rough surface structure includes a plurality of grooves and a plurality of protrusions, and each groove and each protrusion are arranged at intervals along the circumferential direction of the lamp tube.
  • the end cap includes a sleeve on the outer circumference of the lamp tube and a sealing plate fixed at one axial end of the sleeve, so that the end cap has a closed end and an open end;
  • the limiting step is located on the inner wall of the sleeve.
  • the inner wall of the end cap is provided with a plurality of support ribs, each of which is distributed along the circumferential direction of the lamp tube and supported on the outer wall of the lamp tube in the radial direction.
  • the support rib extends from the limiting step to the position adjacent to the open end.
  • the present application improves the heat dissipation effect of the LED straight tube lamp by reserving a gap between the end cap and the lamp tube for heat dissipation.
  • 1 is a schematic diagram of the assembly structure of a lamp tube and an end cap in the LED straight tube lamp of the application;
  • FIG. 2 is a schematic diagram of the internal structure of the end cover of the LED straight tube lamp shown in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of another embodiment of the LED straight tube lamp provided by the application.
  • FIG. 4 is a partial cross-sectional view of the LED straight tube lamp in FIG. 3;
  • Fig. 5 is the structural representation of the end cap in Fig. 3;
  • FIG. 6 is a schematic structural diagram of the substrate in FIG. 4 .
  • a component when referred to as being "connected" to another component, it can be directly connected to the other component or an intervening component may also exist. When a component is considered to be “set on” another component, it may be directly set on the other component or there may be a co-existing centered component.
  • LED lamps In general LED lamps, the lamp tube and the end cap are directly and fixedly connected, which has no heat dissipation function, which affects the service life of the lamp tube 1 .
  • LED lamps that can connect the inner space of the lamp head with the outside have been introduced on the market, such as opening heat dissipation holes on the end plate, but the heat dissipation effect is not ideal.
  • the present application provides an LED straight tube lamp, as shown in FIGS. 1-2 , comprising a lamp tube 1 and end caps 2 fixed to both ends of the lamp tube 1, and the ends of the lamp tube 1 are inserted into the ends of the corresponding side.
  • a heat dissipation gap 3 is left in the cover 2 and between the inner wall 21 of the end cover 2 .
  • the interior of the lamp tube 1 communicates with the outside of the lamp tube 1 through the heat dissipation gap 3 , wherein the Y direction in FIG. 1 is the heat dissipation direction.
  • a plurality of ribs 4 are arranged in the heat dissipation gap 3, and each rib 4 is distributed along the circumferential direction of the lamp tube 1 and is supported between the outer wall 11 of the lamp tube 1 and the inner wall 21 of the end cover 2 on the corresponding side in the radial direction, so that the end of the lamp tube is supported.
  • a clearance fit is formed between the part and the end cap, and a plurality of heat dissipation channels are formed at the same time.
  • the LED straight tube lamp is also provided with a light bar and a driving power supply.
  • the light bar is composed of a substrate and LED lamp beads arranged on the substrate.
  • the driving power supply and the light bar are electrically connected. During normal operation, the driving power supply and the light bar will generate a lot of heat. At this time, through the heat dissipation gap 3 described in this application, the heat inside the straight tube lamp can be dissipated in time, the temperature inside the lamp tube 1 can be reduced, and the LED straight tube can be improved. The service life of lamp 1.
  • the ribs 4 extend along the axial direction of the lamp tube 1 .
  • Axial extension can make the heat conduction path shortest and facilitate the circulation of hot air.
  • the installation method of the lamp tube 1 and the end cover 2 is axial insertion, and the axial extension of the rib 4 can avoid extra friction during installation.
  • the side of the rib 4 facing the end cap opening is provided with a chamfer.
  • ribs 4 evenly distributed along the circumference of the lamp tube 1 .
  • the circumferential distribution of the ribs 4 has a radial support function, but in the actual installation process, considering the frictional force generated when the lamp tube 1 and the end cover 2 are installed, the preferred number of ribs 4 without occupying the heat dissipation channel for 6.
  • the radial dimension of the rib 4 is 0.2-2 mm.
  • the end cap 2 includes a sleeve 22 on the outer periphery of the lamp tube 1 and a sealing plate 23 fixed at one axial end of the sleeve 22, so that the end cap 2 has a closed end and an open end, and is provided at the closed end.
  • connectors such as pins, etc.
  • At least one of the end face of the lamp tube 1 and the limiting step 24 has a plurality of protrusions along the circumferential direction, and the other A partial offset is formed, forming a first gap 31 .
  • the limit step 24 is used to limit the position where the end of the lamp tube 1 is inserted into the corresponding side.
  • the limit step 24 can be a curved surface, or a plurality of protrusions are arranged along the circumferential direction, so that when the end of the lamp tube 1 is inserted There is a certain gap locally when the part and the limiting step 24 are in contact.
  • the specific shape of the limiting step 24 is not limited in this embodiment, and it can also be set to an irregular shape.
  • glue is used to fix the two.
  • blocking the heat dissipation channel should be avoided when applying glue.
  • some unit areas of the second gap 32 between two adjacent ribs 4 are filled with glue, and on the premise of ensuring the bonding strength, try to retain the unit area of the second gap 32 to achieve better heat dissipation effect .
  • the rib 4 starts from the limiting step 24 and extends axially toward the open end of the sleeve 22, but does not extend to the open end thereof.
  • the open end of the sleeve 22 is often provided with inclination.
  • the axially extending ribs 4 may take various forms, for example: extending continuously or extending at intervals.
  • the fixing methods of the above-mentioned ribs 4 can be integrated or split.
  • the outer wall 11 of the lamp tube 1 or the inner wall 21 of the end cover 2 and the rib 4 are integrally formed by a mold.
  • the rib 4 is preferably fixed to the inner wall 21 of the end cover 2 and adopts an integral structure.
  • the present application provides an LED straight tube lamp 100 , which includes a lamp tube 10 , end caps 20 fixed at both ends of the lamp tube 10 , an LED light bar 30 installed in the lamp tube 10 , and A driving power source 40 inside the lamp tube 10 and electrically connected to the LED light bar 30 .
  • the lamp tube 10 has a length direction (X direction in FIG. 1 ), the lamp tube 10 is hollow, and both ends along the length direction are open. It enters into the lamp tube 10 , and is fixedly installed in the lamp tube 10 by means of bonding or clamping, and finally the two ends of the lamp tube 10 are closed by the end caps 20 .
  • the cross section of the lamp tube 10 is circular, and the end cap 20 is sleeved on the outside of the end of the lamp tube 10; the material of the lamp tube 10 is glass, and the material of the end cap 20 is plastic.
  • the cross section of the lamp tube 10 may also be in a square shape, etc., and the material of the lamp tube 10 is a material such as full plastic.
  • a limit step 205 is set in the end cover 20, and the end of the lamp tube 10 is inserted into the end cover 20 on the corresponding side, and is abutted against the limit step 205 by an adhesive material (eg glue), because the lamp tube 10 Also, the contact surfaces of the limiting steps 205 are flat, so that the contact area between the adhesive material and the end cap 20 is small, and the problem of unstable curing may occur.
  • an adhesive material eg glue
  • the limiting step 205 has a limiting surface abutting against the end of the lamp tube 10 , and the limiting surface is a rough surface structure and a rough surface structure 206 ′.
  • the rough surface structure 206 can increase the contact area between the bonding material and the limit step 205, thereby increasing the torsion force of the bonding material and the limit step 205 after curing, so as to strengthen the bonding between the lamp tube 10 and the end cap 20 after curing. firmness.
  • the rough surface structure 206 includes a plurality of grooves 261 and a plurality of protrusions 262, and each groove 261 and each protrusion 262 are along the lamp tube. 10 are arranged at intervals in the circumferential direction. The side of the groove 261 facing the end of the lamp tube 10 is open. When the bonding material is placed between the lamp tube 10 and the limiting step 205, part of the bonding material will be placed in the groove 261 and pass through the groove.
  • the protrusion 262 can increase the gap between the end of the lamp tube 10 and the limit step 205, so that the gap between the lamp tube 10 and the limit step 205 can be increased. Fill in more bonding material.
  • two grooves 261 are disposed between two adjacent protrusions 262 , and the two grooves 261 are respectively adjacent to the corresponding protrusions 261 .
  • the grooves 261 abut against the corresponding protrusions 261 respectively.
  • the LED light bar 30 includes a substrate 301 and LED lamp beads 302 fixed on the substrate 301 .
  • the substrate 301 has a longitudinal direction.
  • the longitudinal direction of the substrate 301 and the longitudinal direction of the LED light bar 30 are arranged in the same direction.
  • the number of LED lamp beads 302 is multiple, and the LED lamp beads 302 are arranged at intervals along the length direction of the substrate 301 , and the distance between two adjacent LED lamp beads 302 is set according to the actual needs of the LED straight tube lamp 100 , which is not included here. explain.
  • the substrate 301 includes a metal layer 311 , an insulating layer 312 and a circuit layer 313 , the LED lamp beads 302 are welded to the circuit layer 313 , and the pins are electrically connected to the circuit layer 313 .
  • the substrate 31 may be a metal substrate, preferably an aluminum substrate 31, or an FR-4 glass fiber plate.
  • the surface of the substrate 301 is coated with a solder resist ink layer, and the solder resist ink layer is white to improve light reflection efficiency.
  • the end cap 20 includes a sleeve 201 located at the outer periphery of the lamp tube 10 and a sealing plate 202 fixed to one axial end of the sleeve 201 , so that the end cap 20 has a closed end 204 and the open end 203; the limiting step 205 is located on the inner wall of the sleeve 201.
  • the sleeve 201 has an axis; when the sleeve 201 is sleeved on the outside of the lamp tube 10, the axis of the sleeve 201 is parallel to the axis of the lamp tube 10 (in this embodiment, the axis of the sleeve 201 is parallel to the lamp tube 10).
  • the axes are set in the same way).
  • the sealing plate 202 is provided with a plurality of heat dissipation holes.
  • the sleeve 201 and the sealing plate 202 are integrally arranged, so as to strengthen the structural strength of the end cap 20 and at the same time reduce the processing difficulty of the end cap 20 .
  • the limiting step 205 is formed by reducing the diameter of the sleeve 201 itself.
  • the sleeve 201 includes a diameter-expanding section 211 and a diameter-reducing section 212 along its own axis (if the wall thickness of the sleeve 21 is the same, the inner diameter of the diameter-expanding section 211 is larger than the inner diameter of the diameter-reducing section 212 ).
  • a limit step 205 is formed at the connection between the diameter section 211 and the diameter reduction section 212 , and the limit step 205 is integrally formed with the sleeve 201 to enhance the structural strength of the sleeve 201 and reduce the difficulty of processing the sleeve 201 .
  • the inner diameter of the sleeve 201 from the open end 203 to the closed end 204 is gradually reduced along the axial direction of the lamp tube 10.
  • the end cap 20 may be eccentric and When the head is tilted (the axis of the end cap 20 and the axis of the lamp tube 10 will have a certain angle).
  • the inner wall of the end cover 20 is provided with a plurality of support ribs 207 , and the support ribs 207 are distributed along the circumferential direction of the lamp tube 10 and radially It is supported on the outer wall of the lamp tube 10 .
  • the arrangement of the support ribs 207 can increase the concentricity between the end cap 20 and the lamp tube 10 , and effectively reduce the tilt angle of the end cap 20 .
  • the support rib 207 extends from the limit step 205 to the position near the open end 203 .
  • the contact point with the lamp tube 10 is upward, so as to ensure that the tilt angle of the end cap 20 can be effectively reduced.
  • the support rib 207 and the sleeve 201 are integrally arranged, so as to increase the structural strength of the support rib 207 and the sleeve 201 , and at the same time, reduce the difficulty of processing the support rib 207 and the sleeve 201 .
  • the support ribs 27 and the corresponding protrusions 262 are disposed opposite to each other along the axial direction of the lamp tube 10 .
  • the support ribs 27 and the grooves 261 are arranged in a staggered manner.
  • 3-20 supporting ribs 207 are evenly distributed along the circumferential direction of the lamp tube 10 .
  • the circumferential distribution of the support ribs 207 has a radial support function.
  • the radial dimension of the support rib 27 is 0.2 mm ⁇ 2mm.
  • the number of the support ribs 207 is six, and the six support ribs 207 are evenly spaced along the axial direction of the lamp tube 10 .
  • the outer diameter of the lamp tube 10 is 25.85 mm; inner diameter of closed end 204 is 26.3 mm -26.5mm; inner diameter of open end 203 is 25.9 mm; L1 is 25.85 mm.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

本申请提供了一种LED直管灯，包括灯管以及固定于所述灯管两端的端盖，所述端盖包括处在灯管外周的套筒以及固定于套筒轴向一端的封板，使得所述端盖具有封闭端和开口端，所述灯管的端部插入对应侧的端盖内，且与该端盖的内壁之间留有散热间隙，所述灯管的内部经由所述散热间隙与灯管外部相连通。本申请通过在端盖和灯管之间留存间隙用于散热，提高了LED直管灯的散热效果。

Description

LED直管灯 技术领域
本申请涉及一种照明用具，尤其涉及一种LED直管灯。
 背景技术
LED直管灯包括灯管、固定在所述灯管两端的端盖、位于灯管内的驱动电源，位于灯管内并与驱动电源电连接的LED模组。其中，端盖带有两接线柱，各接线柱与驱动电源连接，接线柱插接于灯座，以与外部电源相连通。
但在使用的过程中灯管会产生热量使其寿命降低，针对这一问题，市面上现推出了具有散热作用的灯，如公开号为CN208519538U的专利文献公开了LED直管灯，包括灯管、分别设于灯管的相对两端的两灯头、设于灯头内的电源，以及设于所述灯管内的LED灯板，LED灯板上设有多个LED光源，LED光源和电源之间通过LED灯板电性连接，而灯头包括管状的侧壁以及端壁，端壁上设置至少一用于散热的孔洞，使灯头内部空间与外部连通。
 技术问题
本申请提供了一种便于散热的LED直管灯，解决了现有LED灯中散热效果不理想的问题。
 技术解决方案
LED直管灯，包括灯管以及固定于所述灯管两端的端盖，所述端盖包括处在灯管外周的套筒以及固定于套筒轴向一端的封板，使得所述端盖具有封闭端和开口端，其特征在于，所述灯管的端部插入对应侧的端盖内，且与该端盖的内壁之间留有散热间隙，所述灯管的内部经由所述散热间隙与灯管外部相连通。
以下还提供了若干可选方式，但并不作为对上述总体方案的额外限定，仅仅是进一步的增补或优选，在没有技术或逻辑矛盾的前提下，各可选方式可单独针对上述总体方案进行组合，还可以是多个可选方式之间进行组合。
可选的，所述套筒设置有限制灯管轴向移动的限位台阶，所述灯管的端面与限位台阶之间局部相抵，间隔部分构成第一间隙。
可选的，所述限位台阶带有沿周向分布的多个凸起，并通过所述多个凸起与灯管形成局部相抵。
可选的，所述套筒的内壁设置有多根沿灯管轴向延伸的支撑于所述灯管的肋条，与灯管的外壁之间形成和第一间隙连通的第二间隙。
可选的，所述肋条起始于所述限位台阶，向套筒的开口端沿轴向延伸。
可选的，所述肋条的径向尺寸为0.2~2mm。
可选的，所述肋条沿所述灯管的周向均匀分布有3~20条。
可选的，所述灯管和端盖之间采用胶水粘结固定。
可选的，所述LED直管灯内部还设置有灯条和驱动电源，灯条由基板和设置在基板上的LED灯珠组成，驱动电源和灯条之间为电连接。
本申请还提供了另一种LED直管灯，包括：
呈中空设置的灯管；
固定在所述灯管两端的端盖，所述端盖内设置限位台阶，所述灯管的端部插入对应侧的端盖内，并通过粘接材料与所述限位台阶相贴靠固定，所述限位台阶具有贴靠灯管端部的限位面，所述限位面为糙面结构；
安装在所述灯管内的LED灯条，所述LED灯条包括基板以及固定在基板上的LED灯珠；
与所述LED灯条电连接的驱动电源。
可选的，所述糙面结构包括多个凹槽以及多个凸起，各凹槽与各凸起沿灯管的周向依次间隔布置。
可选的，所述端盖包括处在灯管外周的套筒以及固定于套筒轴向一端的封板，使得所述端盖具有封闭端和开口端；
所述限位台阶位于所述套筒的内壁。
可选的，所述端盖的内壁设置有多根支撑筋，各支撑筋沿灯管的周向分布、且在径向上支撑于灯管外壁。
可选的，沿所述灯管的轴向，所述支撑筋由所述限位台阶处延伸至临近所述开口端处。
。
 有益效果
本申请通过在端盖和灯管之间留存间隙用于散热，提高了LED直管灯的散热效果。
 附图说明
图1为本申请LED直管灯中灯管和端盖的装配结构示意图；
图2为图1所示LED直管灯中端盖的内部结构示意图。
图3为本申请提供的另一实施例LED直管灯的结构示意图；
图4为图3中LED直管灯局部剖视图；
图5为图3中端盖的结构示意图；
图6为图4中基板的结构示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，当组件被称为与另一个组件“连接”时，它可以直接与另一个组件连接或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是在于限制本申请。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
一般的LED灯，直接将灯管和端盖固定连接，其没有散热功能，影响了灯管1的使用寿命。为了提高灯管的使用寿命，市面上推出了能够使灯头内部空间与外部连通的LED灯，如在端板上开设散热孔，但是散热效果并不理想。
针对上述问题，本申请提供了一种LED直管灯，如图1~2所示，包括灯管1以及固定于灯管1两端的端盖2，灯管1的端部插入对应侧的端盖2内，且与该端盖2的内壁21之间留有散热间隙3，灯管1的内部经由散热间隙3与灯管1外部相连通，其中图1的Y方向为散热方向。
散热间隙3内设有多根肋条4，各肋条4沿灯管1的周向分布、且在径向上支撑于灯管1外壁11与对应侧的端盖2内壁21之间，使得灯管端部和端盖之间形成间隙配合，同时形成多个散热通道。
LED直管灯内部还设置有灯条和驱动电源，灯条由基板和设置在基板上的LED灯珠组成，驱动电源和灯条之间为电连接。正常工作时，驱动电源与灯条会产生大量热量，此时通过本申请所述的散热间隙3，可以将直管灯内部的热量及时散发出去，降低灯管1内部的温度，提高LED直管灯管1的使用寿命。
在一实施例中，肋条4沿灯管1的轴向延伸。轴向延伸能够使热量的传导路径最短，便于热空气流通，另外灯管1与端盖2的安装方式为轴向对插，肋条4轴向延伸可以避免安装时产生额外的摩擦力。另外为了便于安装，肋条4朝向端盖口的一侧设置有倒角。
为了给端盖提供有效的支撑，肋条4沿灯管1的周向均匀分布有3~20条。肋条4周向分布具有径向支撑作用，但在实际的安装过程中，考虑到安装灯管1与端盖2时产生的摩擦力，在不占用散热通道的情况下，优选的肋条4的数量为6条。
在一实施例中，为了使灯管1的端部与端盖2之间的间隙不至于过大或过小，优选的，肋条4的径向尺寸为0.2~2mm。
在一实施例中，端盖2包括处在灯管1外周的套筒22以及固定于套筒22轴向一端的封板23，使得端盖2具有封闭端和开口端，且在封闭端设置有连接件，比如插针等。
为了增加散热效果，在一实施例中，灯管1的端面与限位台阶24这两者中的至少一者带有沿周向部分的多个凸起，并通过多个凸起与另一者形成局部相抵,，形成第一间隙31。
限位台阶24用于限定灯管1端部插入对应侧的位置，为了不影响散热，限位台阶24为可以为曲面，或沿周向排布有多个凸起，使得当灯管1端部与限位台阶24相抵时局部存有一定间隙，当然，本实施例对限位台阶24的具体形状没有限定，也可以设置为不规则形。
在一实施例中，为了保持灯管1与端盖2之间的相对固定，两者之间采用胶水粘结固定，当然在涂胶时应避免堵塞散热通道。例如，在相邻两肋条4之间的第二间隙32的某些单元区中填充胶水，在保证粘结强度的前提下，尽量保留第二间隙32单元区，使其达到更好地散热效果。
在一实施例中，肋条4起始于限位台阶24，向套筒22的开口端沿轴向延伸，但并不延伸至其开口端，为了方便装配，套筒22的开口端往往会设置倾斜度。
当然，在本实施例中，轴向延伸的肋条4可采用多种形式，例如：连续延伸或者间隔布置延伸。
上述肋条4的固定方式可为一体式和分体式。一体式时，灯管1的外壁11或端盖2的内壁21与肋条4通过模具一体成型。如图2所示，肋条4优选固定于端盖2的内壁21，且采用一体结构。
如图3及图4所示，本申请提供了一种LED直管灯100，包括灯管10、固定在灯管10两端的端盖20、安装在灯管10内的LED灯条30以及安装在灯管10内、并与LED灯条30电连接的驱动电源40。
灯管10具有一长度方向（如图1中的X方向），灯管10呈中空设置、且沿长度方向的两端呈开放设置，LED灯条30以及驱动电源40从灯管10的其中一端进入到灯管10内、并通过粘接或者卡接等方式固定安装在灯管10内，最后通过端盖20对灯管10的两端进行封闭。其中，在本实施方式中，灯管10的截面呈圆形，端盖20套设在灯管10端部的外侧；灯管10的材质为玻璃，端盖20的材质为塑料。当然，在其它实施方式中，灯管10的截面也可以呈方形等，灯管10的材质为全塑等材质。
其中，端盖20内设置限位台阶205，灯管10的端部插入对应侧的端盖20内，并通过粘接材料（例如胶水）与限位台阶205相贴靠固定，由于灯管10以及限位台阶205两者相接触的面为平面，造成粘接材料与端盖20相接触的面积较小，会出现固化不牢固的问题。
为了解决该技术问题，在本实施例中，如图3所示，限位台阶205具有贴靠灯管10端部的限位面，限位面为糙面结构糙面结构206，。糙面结构206能够增加粘接材料与限位台阶205的接触面积，从而能够增加粘接材料与限位台阶205增加固化后的扭力，以加强灯管10与端盖20两者在固化后的牢固性。
糙面结构206的具体设置上，参考其中一实施例，如图3所示，糙面结构206包括多个凹槽261与多个凸起262，各凹槽261与各凸起262沿灯管10的周向呈间隔布置。凹槽261朝向灯管10端部的一侧呈开放设置，粘接材料置于灯管10与限位台阶205两者之间时，部分粘接材料会置于凹槽261内，通过凹槽261可以增加粘接材料与限位台阶205的接触面积；同时，凸起262能够增加灯管10端部与限位台阶205之间的间隙，以能够在灯管10与限位台阶205之间填充更多的粘接材料。
在本实施例中，沿灯管10的周向，相邻两凸起262之间设置有两凹槽261，且两凹槽261分别临近对应的凸起261。在本实施方式中，凹槽261分别与对应的凸起261相贴靠。
在本实施例中，如图2所示，LED灯条30包括基板301以及固定在基板301上的LED灯珠302。基板301具长度方向，LED灯条30安装于灯管10内时，基板301长度方向与LED灯条30长度方向呈一致设置。LED灯珠302的数量为多个，各LED灯珠302沿基板301长度方向间隔布置，相邻的两LED灯珠302之间的间距根据LED直管灯100的实际需要进行设置，在此不在进行阐述。
在本实施例中，如图6所示，基板301包括金属层311、绝缘层312和电路层313，LED灯珠302焊接于电路层313，插针与电路层313电连接。其中，基板31可以选用金属基板，优选为铝基板31，也可以选择FR-4玻纤板。在一些实施例中，基板301的表面涂覆有阻焊油墨层，阻焊油墨层为白色，以提高反光效率。
在本实施例中，如图4及图5所示，端盖20包括处在灯管10外周的套筒201以及固定于套筒201轴向一端的封板202，使得端盖20具有封闭端204和开口端203；限位台阶205位于套筒201的内壁。套筒201具有一轴线；在套筒201套在灯管10的外侧时，套筒201的轴线与灯管10的轴线呈平行设置（在本实施方式中，套筒201的轴线与灯管10的轴线呈一致设置）。为了能够将端盖20内的热量及时的散出，在一些实施例中，封板202开设有多个散热孔。
在本实施方式中，套筒201与封板202之间呈一体设置，以能够加强端盖20的结构强度，同时还能够降低端盖20的加工工艺难度。
在本实施例中，套筒201通过自身缩径形成限位台阶205。具体的，套筒201沿自身的轴向包括扩径段211与缩径段212（在套筒21的壁厚一致的情况下，扩径段211的内径大于缩径段212的内径），扩径段211与缩径段212两者的衔接处形成限位台阶205，限位台阶205与套筒201一体成型，以能够加强套筒201的结构强度，以及降低套筒201加工工艺难度。
端盖20因为注塑等原因，沿灯管10轴向，套筒201由开口端203至封闭端204的内径逐渐缩小，直接将灯管10插入端盖20内时，会出现端盖20偏心及歪头的情况（端盖20的轴线与灯管10的轴线会出现一定的角度）。为了解决该技术问题，本实施例中，如图2及图3所示，端盖20的内壁设置有多根支撑筋207，各支撑筋207沿灯管10的周向分布、且在径向上支撑于灯管10外壁。支撑筋207的设置能够增加端盖20与灯管10的同心度，有效降低端盖20歪头的角度。
支撑筋207的具体设置上，参考其中一实施例，沿灯管10的轴向，支撑筋207由限位台阶205处延伸至临近开口端203处，可以增加支撑筋207在灯管10的轴向上与灯管10的接触点，从而能够保证有效降低端盖20歪头的角度。
支撑筋207与套筒201之间呈一体设置，以能够加支撑筋207与套筒201的结构强度，同时还能够降低支撑筋207与套筒201的加工工艺难度。
为了避免支撑筋27影响凹槽261的开口大小，参考其中一实施例，沿灯管10的轴向，支撑筋27与对应的凸起262呈相对设置。当然，在其它一些实施例中。沿灯管10的周向，支撑筋27与凹槽261呈错位设置。
在本实施例中，支撑筋207沿灯管10的周向均匀分布有3~20条。支撑筋207周向分布具有径向支撑作用。为了使灯管10的外侧壁与端盖内侧壁之间的间隙不至于过大或过小，参考其中一实施例中，支撑筋27的径向尺寸为0.2 mm ~2mm。
在本实施例中，支撑筋207的数量为六根，且六根支撑筋207沿灯管10轴向均匀间隔设置。沿灯管轴向对称布置的两支撑筋207之间的距离为L1，灯管10的外径为L2，且满足L1：L2=1：（0.9~1）。在本实施例中，灯管10的外径为25.85 mm；封闭端204的内径为26.3 mm -26.5mm；开口端203的内径为25.9 mm；L1为25.85 mm。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。不同实施例中的技术特征体现在同一附图中时，可视为该附图也同时披露了所涉及的各个实施例的组合例。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。

Claims (14)

  1. LED直管灯，包括灯管以及固定于所述灯管两端的端盖，所述端盖包括处在灯管外周的套筒以及固定于套筒轴向一端的封板，使得所述端盖具有封闭端和开口端，其特征在于，所述灯管的端部插入对应侧的端盖内，且与该端盖的内壁之间留有散热间隙，所述灯管的内部经由所述散热间隙与灯管外部相连通。
  2. 根据权利要求1所述的LED直管灯，其特征在于，所述套筒设置有限制灯管轴向移动的限位台阶，所述灯管的端面与限位台阶之间局部相抵，间隔部分构成第一间隙。
  3. 根据权利要求2所述的LED直管灯，其特征在于，所述限位台阶带有沿周向分布的多个凸起，并通过所述多个凸起与灯管形成局部相抵。
  4. 根据权利要求2所述的LED直管灯，其特征在于，所述套筒的内壁设置有多根沿灯管轴向延伸的支撑于所述灯管的肋条，与灯管的外壁之间形成和第一间隙连通的第二间隙。
  5. 根据权利要求4所述的LED直管灯，其特征在于，所述肋条起始于所述限位台阶，向套筒的开口端沿轴向延伸。
  6. 根据权利要求4所述的LED直管灯，其特征在于，所述肋条的径向尺寸为0.2~2mm。
  7. 根据权利要求4所述的LED直管灯，其特征在于，所述肋条沿所述灯管的周向均匀分布有3~20条。
  8. 根据权利要求8所述的LED直管灯，其特征在于，所述灯管和端盖之间采用胶水粘结固定。
  9. 根据权利要求1所述的LED直管灯，其特征在于，所述LED直管灯内部还设置有灯条和驱动电源，灯条由基板和设置在基板上的LED灯珠组成，驱动电源和灯条之间为电连接。
  10. LED直管灯，其特征在于，包括：
    呈中空设置的灯管；
    固定在所述灯管两端的端盖，所述端盖内设置限位台阶，所述灯管的端部插入对应侧的端盖内，并通过粘接材料与所述限位台阶相贴靠固定，所述限位台阶具有贴靠灯管端部的限位面，所述限位面为糙面结构；
    安装在所述灯管内的LED灯条，所述LED灯条包括基板以及固定在基板上的LED灯珠；
    与所述LED灯条电连接的驱动电源。
  11. 根据权利要求10所述的LED直管灯，其特征在于，所述糙面结构包括多个凹槽以及多个凸起，各凹槽与各凸起沿灯管的周向依次间隔布置。
  12. 根据权利要求10所述的LED直管灯，其特征在于，所述端盖包括处在灯管外周的套筒以及固定于套筒轴向一端的封板，使得所述端盖具有封闭端和开口端；
    所述限位台阶位于所述套筒的内壁。
  13. 根据权利要求12所述的LED直管灯，其特征在于，所述端盖的内壁设置有多根支撑筋，各支撑筋沿灯管的周向分布、且在径向上支撑于灯管外壁。
  14. 根据权利要求13所述的LED直管灯，其特征在于，沿所述灯管的轴向，所述支撑筋由所述限位台阶处延伸至临近所述开口端处。
PCT/CN2021/126799 2021-02-04 2021-10-27 Led直管灯 WO2022166269A1 (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015170405A (ja) * 2014-03-05 2015-09-28 株式会社リコー 直管形ランプ及び照明装置
CN206656173U (zh) * 2017-05-02 2017-11-21 厦门市信达光电科技有限公司 Led日光灯
CN214275387U (zh) * 2021-02-04 2021-09-24 晨辉光宝科技股份有限公司 便于散热的led直管灯

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015170405A (ja) * 2014-03-05 2015-09-28 株式会社リコー 直管形ランプ及び照明装置
CN206656173U (zh) * 2017-05-02 2017-11-21 厦门市信达光电科技有限公司 Led日光灯
CN214275387U (zh) * 2021-02-04 2021-09-24 晨辉光宝科技股份有限公司 便于散热的led直管灯

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