WO2014089931A1 - Direct-welding type led down lamp - Google Patents

Direct-welding type led down lamp Download PDF

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Publication number
WO2014089931A1
WO2014089931A1 PCT/CN2013/071431 CN2013071431W WO2014089931A1 WO 2014089931 A1 WO2014089931 A1 WO 2014089931A1 CN 2013071431 W CN2013071431 W CN 2013071431W WO 2014089931 A1 WO2014089931 A1 WO 2014089931A1
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Prior art keywords
pcb board
led
led lamp
direct
pcb
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PCT/CN2013/071431
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French (fr)
Chinese (zh)
Inventor
林培林
李艳潮
Original Assignee
Lin Peilin
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Publication of WO2014089931A1 publication Critical patent/WO2014089931A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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 utility model relates to an LED lamp, in particular to a straight-welded LED downlight.
  • an aluminum substrate (a type of PCB board) is applied to an LED, and the heat dissipation effect is poor.
  • a layer of heat-dissipating adhesive is required to be bonded between the aluminum substrate and the aluminum alloy casing, and the thermal resistance is too large.
  • the heat of the LED is conducted to the aluminum substrate, the heat of the aluminum substrate can be directly transmitted to the outer casing of the street lamp through the heat-dissipating glue, resulting in high temperature of the LED and the outer casing.
  • the junction temperature of the LED lamp bead or LED module is greater than 75 ° C, the life of the LED will be greatly shortened.
  • the heat-dissipating paste will age after long-term use, and can not achieve the heat-dissipating effect and easily cause insufficient contact.
  • the uneven heat dissipation will also cause the local temperature of the lamp to be too high and affect the life.
  • the purpose of the utility model is to overcome the defects of the prior art and provide a direct welding type LED downlight.
  • the direct-welded LED downlight comprises an LED lamp bead, a PCB board and a heat sink, the LED board is fixed on one side of the PCB board, and the first solder paste layer is disposed on the other side, and the heat sink is provided on the heat sink a nickel plating layer, wherein the PCB board is soldered to a side of the heat sink having a nickel plating layer by a first solder paste layer; the heat sink body is a disc-shaped lamp shell provided with a cavity, and the bottom of the cavity
  • the aforementioned PCB board and LED lamp bead are provided.
  • a further technical solution is that the sidewall of the cavity is conical and provided with a reflective layer; the front end of the disc-shaped lamp housing is provided with a cover; and a light guide plate is disposed in the middle of the cover.
  • the PCB board is a metal PCB board or a bakelite PCB board.
  • the metal PCB board is a copper clad PCB board, a full copper PCB board or an aluminum PCB board.
  • the LED lamp bead is a plurality of; the PCB board is further provided with a second solder paste layer for soldering and fixing the LED lamp bead.
  • the utility model has the beneficial effects compared with the prior art: the direct welding type LED downlight of the utility model adopts the heat dissipating body which directly has the heat dissipation effect of the PCB board, the thermal resistance is reduced, the heat dissipation speed is reduced in advance, and the heat dissipation is reduced.
  • the light decay of LED lamp beads improves the service life of LED lamps.
  • the overall structure of the LED luminaire is further optimized to make the product structure more compact.
  • the test data shows that the LED downlight of the utility model can have a service life of more than ten years.
  • FIG. 1 is a perspective exploded structural view of a specific embodiment of a direct-welded LED downlight of the present invention.
  • the direct-welding LED downlight of the present invention comprises a non-isolated power supply (not shown), and an LED lamp bead 32 electrically connected to the non-isolated power supply, and the LED lamp bead 32 is fixed to
  • On the bakelite PCB board 33 one side of the bakelite PCB board 33 is provided with a second solder paste layer 30 for electrically connecting the LED lamp bead 32 and the non-isolated power source (while functioning as a fixed connection);
  • the other side of the 33 is provided with a heat dissipating body (the heat sink is coated with a nickel plating layer for soldering), and a first solder paste layer 35 is disposed between the bakelite PCB board 33 and the heat sink;
  • the heat dissipating body is a disc-shaped lamp housing 34 provided with a cavity 341.
  • the bottom of the cavity 341 is provided with the aforementioned bakelite PCB board 33 and LED lamp bead 32; the sidewall of the cavity 341 is conical and is provided with reflection
  • the layer 342 (which may be composed of a reflective paper material); the front end of the disc-shaped lamp housing 34 is provided with a cover 36; and the center of the cover 36 is provided with a light guide plate 37.
  • the power supply may also be an isolated power supply
  • the PCB board may also be a metal PCB board, such as a copper clad PCB board, a full copper PCB board, or an aluminum PCB board.
  • the first solder paste layer and the second solder paste layer may be simultaneously heated and welded, or may be heated and soldered in several stages.
  • the direct-welding LED downlight of the utility model adopts a heat sink body which directly has a heat dissipation function of the PCB board, reduces the thermal resistance, reduces the heat dissipation speed in advance, reduces the light decay of the LED lamp bead, and improves the LED.
  • the service life of the luminaire The overall structure of the LED luminaire is further optimized to make the product structure more compact.
  • the test data shows that the LED downlight of the utility model can have a service life of more than ten years.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A direct-welding type LED down lamp comprises an LED lamp bead (32), a PCB (33) and a radiator. The LED lamp bead (32) is fixed on one side of the PCB (33), and a first soldering paste layer (35) is arranged on the other side of the PCB. A nickle plating layer is arranged on the radiator. The PCB is welded with one side, provided with the nickle plating layer, of the radiator through the first soldering paste layer (35). The radiator is a disc-shaped lamp shell (34) provided with a concave cavity (341). The PCB (33) and the LED lamp bead (32) are arranged at a bottom of the concave cavity (341). According to the direct-welding type LED down lamp, the PCB (33) is welded with the radiator that can directly dissipate heat, thus thermal resistance is reduced, a heat dissipation speed is increased, light wane of the LED lamp bead (32) is reduced, and a service life of the LED lamp is prolonged. An overall structure of the LED lamp is further optimized, making a product structure of the LED lamp miniaturized.

Description

直焊式LED筒灯  Straight welded LED downlight
　　　技术领域Technical field
　　　本实用新型涉及一种LED灯具，更具体地说是指一种直焊式LED筒灯。The utility model relates to an LED lamp, in particular to a straight-welded LED downlight.
　　
　　　背景技术 Background technique
　　　现有技术中，在LED灯具行业，其散热是一项技术难题。目前为止，各大LED灯具制造厂家都没有更好的办法解决这个散热问题。现有的采用铝基板与散热膏粘合的散热结构，造成LED、铝基板和铝基座（路灯外壳）间的散热温差较大，LED结温较高。当LED结温在70℃以上时，LED灯珠就会受到严重损坏，造成光衰，影响整个LED灯具的寿命。In the prior art, in the LED lighting industry, heat dissipation is a technical problem. So far, major LED luminaire manufacturers have no better way to solve this heat dissipation problem. The existing heat dissipation structure using an aluminum substrate and a heat-dissipating paste causes a large temperature difference between the LED, the aluminum substrate and the aluminum base (the street lamp housing), and the LED junction temperature is high. When the LED junction temperature is above 70 °C, the LED lamp bead will be seriously damaged, causing light decay, affecting the life of the entire LED lamp.
　　　目前，采用铝基板（PCB板的一种）应用于LED上，其散热效果欠佳。特别是铝基板与铝合金外壳间需要设置一层散热粘合剂粘合在一起，热阻太大。当LED热量传导至铝基板后，铝基板的热量通过散热胶才能直接传导到路灯外壳体上，造成LED和外壳温度偏高。而LED灯珠或LED模组的结温大于75℃时，LED的寿命会大大缩短。另外，散热膏经长期使用会老化，不能达到散热效果且易造成接触不充分，散热不均匀也会使灯的局部温度过高而影响寿命。At present, an aluminum substrate (a type of PCB board) is applied to an LED, and the heat dissipation effect is poor. In particular, a layer of heat-dissipating adhesive is required to be bonded between the aluminum substrate and the aluminum alloy casing, and the thermal resistance is too large. When the heat of the LED is conducted to the aluminum substrate, the heat of the aluminum substrate can be directly transmitted to the outer casing of the street lamp through the heat-dissipating glue, resulting in high temperature of the LED and the outer casing. When the junction temperature of the LED lamp bead or LED module is greater than 75 ° C, the life of the LED will be greatly shortened. In addition, the heat-dissipating paste will age after long-term use, and can not achieve the heat-dissipating effect and easily cause insufficient contact. The uneven heat dissipation will also cause the local temperature of the lamp to be too high and affect the life.
　　　因此，有必要开发出一种更为直接的散热结构，以解决LED灯具的散热问题。Therefore, it is necessary to develop a more direct heat dissipation structure to solve the heat dissipation problem of LED lamps.
　　　
　　　实用新型内容Utility model content
　　　本实用新型的目的在于克服现有技术的缺陷，提供一种直焊式LED筒灯。The purpose of the utility model is to overcome the defects of the prior art and provide a direct welding type LED downlight.
　　　为实现上述目的，本实用新型采用以下技术方案：In order to achieve the above object, the utility model adopts the following technical solutions:
　　　直焊式LED筒灯，包括LED灯珠、PCB板和散热体，所述PCB板的一面固定有所述的LED灯珠，另一面设有第一焊锡膏层，所述散热体上设有镀镍层，所述的PCB板通过设有的第一焊锡膏层与散热体具有镀镍层的一面焊接；所述的散热体为设有凹腔的圆盘形灯壳，凹腔的底部设有前述的PCB板和LED灯珠。The direct-welded LED downlight comprises an LED lamp bead, a PCB board and a heat sink, the LED board is fixed on one side of the PCB board, and the first solder paste layer is disposed on the other side, and the heat sink is provided on the heat sink a nickel plating layer, wherein the PCB board is soldered to a side of the heat sink having a nickel plating layer by a first solder paste layer; the heat sink body is a disc-shaped lamp shell provided with a cavity, and the bottom of the cavity The aforementioned PCB board and LED lamp bead are provided.
　　　其进一步技术方案为：所述凹腔的侧壁为圆锥形，并设有反光层；所述圆盘形灯壳的前端设有面盖；所述面盖的中间设有导光板。A further technical solution is that the sidewall of the cavity is conical and provided with a reflective layer; the front end of the disc-shaped lamp housing is provided with a cover; and a light guide plate is disposed in the middle of the cover.
　　　其进一步技术方案为：所述的PCB板是金属PCB板或电木PCB板。A further technical solution is that the PCB board is a metal PCB board or a bakelite PCB board.
　　　其进一步技术方案为：所述金属PCB板是覆铜PCB板、全铜PCB板或铝PCB板。A further technical solution is that the metal PCB board is a copper clad PCB board, a full copper PCB board or an aluminum PCB board.
　　　其进一步技术方案为：所述的LED灯珠为若干个；所述的PCB板还设有用于焊接固定LED灯珠的第二焊锡膏层。A further technical solution is: the LED lamp bead is a plurality of; the PCB board is further provided with a second solder paste layer for soldering and fixing the LED lamp bead.
　　　本实用新型与现有技术相比的有益效果是：本实用新型直焊式LED筒灯，采用了将PCB板直接具有散热作用的散热体焊接在一起，热阻减小，提前散热速度，减少LED灯珠的光衰，提高LED灯具的使用寿命。并进一步优化了LED灯具的整体结构，使其产品结构更趁于小型化。经测试数据显示，采用本实用新型LED筒灯，其使用寿命可以到十年以上。The utility model has the beneficial effects compared with the prior art: the direct welding type LED downlight of the utility model adopts the heat dissipating body which directly has the heat dissipation effect of the PCB board, the thermal resistance is reduced, the heat dissipation speed is reduced in advance, and the heat dissipation is reduced. The light decay of LED lamp beads improves the service life of LED lamps. The overall structure of the LED luminaire is further optimized to make the product structure more compact. The test data shows that the LED downlight of the utility model can have a service life of more than ten years.
　　　下面结合附图和具体实施例对本实用新型作进一步描述。The present invention will be further described below in conjunction with the drawings and specific embodiments.
　　　
　　　附图说明DRAWINGS
　　　图1为本实用新型直焊式LED筒灯具体实施例的立体爆炸结构图。1 is a perspective exploded structural view of a specific embodiment of a direct-welded LED downlight of the present invention.
　　　附图说明DRAWINGS
　　　30 第二焊锡膏层 32 LED灯珠30 second solder paste layer 32 LED lamp beads
　　　33 电木PCB板 34 圆盘形灯壳33 electric wood PCB board 34 disc shaped lamp housing
　　　341 凹腔 342 反光层341 cavity 342 reflective layer
　　　35 第一焊锡膏层 36 面盖35 first solder paste layer 36 cover
　　　37 导光板37 light guide
　　　
　　　具体实施方式 detailed description
　　　为了更充分理解本实用新型的技术内容，下面结合具体实施例对本实用新型的技术方案进一步介绍和说明，但不局限于此。In order to more fully understand the technical content of the present invention, the technical solutions of the present invention are further introduced and described below in conjunction with specific embodiments, but are not limited thereto.
　　　如图1所示，本实用新型直焊式LED筒灯，包括非隔离式电源（图中未示出），及与非隔离式电源电性联接的LED灯珠32，LED灯珠32固定于电木PCB板33上，电木PCB板33的一面设有用于电性联接LED灯珠32与非隔离式电源的第二焊锡膏层30（同时起到固定联接的作用）；电木PCB板33的另一面与设有的散热体（散热体上涂有一层镀镍层，用于锡焊焊接）焊接式联接，电木PCB板33与散热体之间设有第一焊锡膏层35；散热体为设有凹腔341的圆盘形灯壳34，凹腔341的底部设有前述的电木PCB板33和LED灯珠32；凹腔341的侧壁为圆锥形，并设有反光层342(可由反光纸材料构成)；圆盘形灯壳34的前端设有面盖36；面盖36的中间设有导光板37。As shown in FIG. 1 , the direct-welding LED downlight of the present invention comprises a non-isolated power supply (not shown), and an LED lamp bead 32 electrically connected to the non-isolated power supply, and the LED lamp bead 32 is fixed to On the bakelite PCB board 33, one side of the bakelite PCB board 33 is provided with a second solder paste layer 30 for electrically connecting the LED lamp bead 32 and the non-isolated power source (while functioning as a fixed connection); The other side of the 33 is provided with a heat dissipating body (the heat sink is coated with a nickel plating layer for soldering), and a first solder paste layer 35 is disposed between the bakelite PCB board 33 and the heat sink; The heat dissipating body is a disc-shaped lamp housing 34 provided with a cavity 341. The bottom of the cavity 341 is provided with the aforementioned bakelite PCB board 33 and LED lamp bead 32; the sidewall of the cavity 341 is conical and is provided with reflection The layer 342 (which may be composed of a reflective paper material); the front end of the disc-shaped lamp housing 34 is provided with a cover 36; and the center of the cover 36 is provided with a light guide plate 37.
　　　于其它实施例中，电源也可以是隔离式电源，PCB板也可以是金属PCB板，比如覆铜PCB板、全铜PCB板或铝PCB板。In other embodiments, the power supply may also be an isolated power supply, and the PCB board may also be a metal PCB board, such as a copper clad PCB board, a full copper PCB board, or an aluminum PCB board.
　　　加工过程中，第一焊锡膏层和第二焊锡膏层可以同时进行加热焊接，也可以分次进行加热焊接。During the processing, the first solder paste layer and the second solder paste layer may be simultaneously heated and welded, or may be heated and soldered in several stages.
　　　综上所述，本实用新型直焊式LED筒灯，采用了将PCB板直接具有散热作用的散热体焊接在一起，热阻减小，提前散热速度，减少LED灯珠的光衰，提高LED灯具的使用寿命。并进一步优化了LED灯具的整体结构，使其产品结构更趁于小型化。经测试数据显示，采用本实用新型的LED筒灯，其使用寿命可以到十年以上。In summary, the direct-welding LED downlight of the utility model adopts a heat sink body which directly has a heat dissipation function of the PCB board, reduces the thermal resistance, reduces the heat dissipation speed in advance, reduces the light decay of the LED lamp bead, and improves the LED. The service life of the luminaire. The overall structure of the LED luminaire is further optimized to make the product structure more compact. The test data shows that the LED downlight of the utility model can have a service life of more than ten years.
　　　上述仅以实施例来进一步说明本实用新型的技术内容，以便于读者更容易理解，但不代表本实用新型的实施方式仅限于此，任何依本实用新型所做的技术延伸或再创造，均受本实用新型的保护。本实用新型的保护范围以权利要求书为准。The technical content of the present invention is further described by way of example only, so that the reader can understand the present invention more easily, but the embodiment of the present invention is not limited thereto, and any technology according to the present invention is extended or recreated. Protected by the utility model. The scope of protection of the present invention is defined by the claims.

Claims (5)

  1. 直焊式LED筒灯，其特征在于包括LED灯珠、PCB板和散热体，所述PCB板的一面固定有所述的LED灯珠，另一面设有第一焊锡膏层，所述散热体上设有镀镍层，所述的PCB板通过设有的第一焊锡膏层与散热体具有镀镍层的一面焊接；所述的散热体为设有凹腔的圆盘形灯壳，凹腔的底部设有前述的PCB板和LED灯珠。 The direct-welded LED downlight is characterized in that it comprises an LED lamp bead, a PCB board and a heat sink, the LED board is fixed on one side of the PCB board, and the first solder paste layer is disposed on the other side, the heat sink body a nickel-plated layer is disposed on the PCB, and the first solder paste layer is soldered to a side of the heat-dissipating body having a nickel-plated layer; the heat-dissipating body is a disk-shaped lamp shell provided with a cavity, concave The bottom of the cavity is provided with the aforementioned PCB board and LED lamp beads.
  2. 根据权利要求1所述的直焊式LED筒灯，其特征在于所述凹腔的侧壁为圆锥形，并设有反光层；所述圆盘形灯壳的前端设有面盖；所述面盖的中间设有导光板。The direct-welded LED downlight according to claim 1, wherein the sidewall of the cavity is conical and provided with a reflective layer; the front end of the disc-shaped lamp housing is provided with a cover; A light guide plate is arranged in the middle of the cover.
  3. 根据权利要求1所述的直焊式LED筒灯，其特征在于所述的PCB板是金属PCB板或电木PCB板。The direct soldering LED downlight according to claim 1, wherein the PCB board is a metal PCB board or a bakelite PCB board.
  4. 根据权利要求3所述的直焊式LED筒灯，其特征在于所述金属PCB板是覆铜PCB板、全铜PCB板或铝PCB板。The direct soldering LED downlight according to claim 3, wherein the metal PCB board is a copper clad PCB board, a full copper PCB board or an aluminum PCB board.
  5. 根据权利要求1所述的直焊式LED筒灯，其特征在于所述的LED灯珠为若干个；所述的PCB板还设有用于焊接固定LED灯珠的第二焊锡膏层。The direct soldering LED downlight according to claim 1, wherein the LED lamp bead is a plurality of; the PCB board is further provided with a second solder paste layer for soldering and fixing the LED lamp bead.
PCT/CN2013/071431 2012-12-13 2013-02-06 Direct-welding type led down lamp WO2014089931A1 (en)

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CN201220688461.9 2012-12-13
CN2012206884619U CN202972674U (en) 2012-12-13 2012-12-13 Direct-welding type light-emitting diode (LED) down light

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WO2014089931A1 true WO2014089931A1 (en) 2014-06-19

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CN105221980A (en) * 2014-06-27 2016-01-06 安徽兆利光电科技有限公司 A kind of heat dissipation LED bulkhead lamp capable

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