TWI773548B - Car led lamp diffusion module for both heat conduction and heat diffusion - Google Patents

Car led lamp diffusion module for both heat conduction and heat diffusion Download PDF

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TWI773548B
TWI773548B TW110136720A TW110136720A TWI773548B TW I773548 B TWI773548 B TW I773548B TW 110136720 A TW110136720 A TW 110136720A TW 110136720 A TW110136720 A TW 110136720A TW I773548 B TWI773548 B TW I773548B
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heat
led lamp
diffusion
fin
dissipation module
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TW110136720A
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TW202316056A (en
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林清彬
鍾文正
林郁傑
黃晟瑜
黃惟澤
廖彥翔
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淡江大學學校財團法人淡江大學
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Abstract

A car LED lamp diffusion module for both heat conduction and heat diffusion is disclosed. The car LED lamp diffusion module for both heat conduction and heat diffusion includes metal shell, a heat conducting body, at least one LED lamp, a heat pipe part, a fin heat sink body and a fan. The heat conducting body is in contact with the metal shell. The at least one LED lamp is arranged on the heat conducting body. The heat pipe part is integrally formed at one end of the heat conducting body and penetrates the inner side of the metal shell. The fin heat sink body is in contact with the heat pipe part. The fan is arranged at one end of the fin heat sink body to remove the heat energy diffused by the fin heat sink body. The heat conducting body is used for absorbing the heat energy generated by at least one LED lamp, and the heat pipe part is used for conducting the absorbed heat energy to the fin heat sink. The fin heat sink body is used for diffusing the heat energy conducted by the heat pipe part.

Description

兼顧熱傳導與熱擴散之車用LED燈散熱模組A heat dissipation module for automotive LED lamps that takes into account both heat conduction and heat diffusion

本發明是有關於一種LED燈散熱模組，特別是關於一種兼顧熱傳導與熱擴散之車用LED燈散熱模組。The present invention relates to a heat dissipation module for an LED lamp, in particular to a heat dissipation module for an LED lamp for a vehicle that takes both heat conduction and heat diffusion into consideration.

由於發光二極體(Light Emitting Diode，LED)具有高發光效率、工作電壓低、耗電量小、體積小等優點，近年來廣泛應用在車用照明系統上。Due to the advantages of high luminous efficiency, low operating voltage, low power consumption, and small size, light-emitting diodes (Light Emitting Diodes, LEDs) have been widely used in automotive lighting systems in recent years.

但車用LED燈存在極大的散熱問題，一般來說，車用LED燈所產生的熱有約60%為不可逆功。當車用LED燈達到一定高溫時，將會使輸出功率降低，並減少其使用壽命。However, automotive LED lights have great heat dissipation problems. Generally speaking, about 60% of the heat generated by automotive LED lights is irreversible work. When the automotive LED lamp reaches a certain high temperature, the output power will be reduced and its service life will be reduced.

目前常見的散熱模組材料主要分為全鋁或全銅，鋁的熱擴散係數高但熱傳導係數低，銅的的熱擴散係數低但熱傳導係數高，兩者無法同時滿足高擴散係數與高熱傳導係數。換言之，由單一材料構成的散熱模組，其散熱效果受到限制。另外，若使用高轉速的風扇來加強散熱，則需要雙軸承結構或加粗軸承的方式，此方式會導致成本太高的問題。At present, the common heat dissipation module materials are mainly divided into all aluminum or all copper. Aluminum has high thermal diffusivity but low thermal conductivity, and copper has low thermal diffusivity but high thermal conductivity. Both cannot satisfy both high diffusivity and high thermal conductivity. coefficient. In other words, the heat dissipation effect of the heat dissipation module composed of a single material is limited. In addition, if a high-speed fan is used to enhance heat dissipation, a double-bearing structure or a method of thickening the bearing is required, which leads to a problem of high cost.

因此，如何能提供一種『兼顧熱傳導與熱擴散之車用LED燈散熱模組』，成為業界所待解決之課題。Therefore, how to provide a "heat dissipation module for automotive LED lamps that takes into account both heat conduction and heat diffusion" has become a problem to be solved in the industry.

本發明實施例提供一種兼顧熱傳導與熱擴散之車用LED燈散熱模組，包含有：一金屬殼體；一導熱本體，與金屬殼體接觸；至少一LED燈，設置於導熱本體上；一熱管部，一體成形於導熱本體的一端，並穿設於金屬殼體之內側；一鰭片散熱體，與熱管部接觸；及一風扇，設置於鰭片散熱體之一端，以排除鰭片散熱體擴散的熱能；其中導熱本體用以吸收至少一LED燈產生的熱能，並由熱管部傳導所吸收的熱能至鰭片散熱體，而鰭片散熱體用以擴散熱管部傳導的熱能。An embodiment of the present invention provides a heat dissipation module for a vehicle LED lamp that takes into account both heat conduction and heat diffusion, including: a metal shell; The heat pipe part is integrally formed at one end of the heat conducting body and is inserted into the inner side of the metal shell; a fin heat sink is in contact with the heat pipe part; The heat energy diffused by the body; wherein the heat conduction body is used for absorbing the heat energy generated by at least one LED lamp, and the absorbed heat energy is conducted by the heat pipe part to the fin heat sink, and the fin heat sink body is used for dissipating the heat energy conducted by the heat pipe part.

在一些實施例中，熱管部之內部具有一毛細結構與一工作流體，工作流體吸收至少一LED燈產生的熱能後呈現一氣體狀態，並於熱管部之另一端凝結回一液體狀態。In some embodiments, the inside of the heat pipe has a capillary structure and a working fluid. The working fluid absorbs the heat energy generated by the at least one LED lamp and assumes a gas state, and condenses back to a liquid state at the other end of the heat pipe.

在一些實施例中，熱管部之外觀呈現一圓柱狀結構。In some embodiments, the appearance of the heat pipe portion presents a cylindrical structure.

在一些實施例中，導熱本體為一多面體，且每一面分別與至少一LED燈直接接觸。In some embodiments, the thermally conductive body is a polyhedron, and each side is in direct contact with at least one LED light.

在一些實施例中，金屬殼體為一多面體，且具有與導熱本體之多面體相同的面數。In some embodiments, the metal shell is a polyhedron having the same number of faces as the polyhedron of the thermally conductive body.

在一些實施例中，導熱本體為銅材質，而鰭片散熱體為鋁材質。In some embodiments, the thermally conductive body is made of copper, and the finned heat sink is made of aluminum.

在一些實施例中，銅材質的熱膨脹係數介於16~19ppm/K之間，而鋁材質的熱膨脹係數介於18~21ppm/K之間。In some embodiments, the thermal expansion coefficient of the copper material is between 16-19 ppm/K, and the thermal expansion coefficient of the aluminum material is between 18-21 ppm/K.

在一些實施例中，金屬殼體與鰭片散熱體之間還設置有一襯套，用以與一車體燈殼進行固定。In some embodiments, a bushing is further provided between the metal shell and the fin heat sink for fixing with a vehicle body lamp housing.

在一些實施例中，導熱本體、熱管部、鰭片散熱體與風扇設置於同一軸向上。In some embodiments, the heat conducting body, the heat pipe portion, the fin heat sink and the fan are arranged on the same axis.

在一些實施例中，金屬殼體上還設置有至少一軟性電路板，以驅動至少一LED燈發亮。In some embodiments, at least one flexible circuit board is further disposed on the metal casing to drive at least one LED light to light up.

為讓本發明能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。In order to make the present invention more obvious and easy to understand, the following specific embodiments are given and described in detail in conjunction with the accompanying drawings as follows.

以下結合附圖和實施例，對本發明的具體實施方式作進一步描述。以下實施例僅用於更加清楚地說明本發明的技術方案，而不能以此限制本發明的保護範圍。The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and embodiments. The following examples are only used to more clearly illustrate the technical solutions of the present invention, but not to limit the protection scope of the present invention.

為了清楚與方便圖式說明之故，圖式中的各部件在尺寸與比例上可能會被擴大或縮小地呈現。在以下描述及/或申請專利範圍中，當提及元件「連接」或「耦合」至另一元件時，其可直接連接或耦合至該另一元件或可存在介入元件；而當提及元件「直接連接」或「直接耦合」至另一元件時，不存在介入元件，用於描述元件或層之間之關係之其他字詞應以相同方式解釋；「第一」、「第二」等序數，彼此之間並沒有順序上的先後關係，其僅用於標示區分兩個具有相同名字之不同元件。為使便於理解，下述實施例中之相同元件係以相同之符號標示來說明。For the sake of clarity and convenience in the description of the drawings, various components in the drawings may be shown exaggerated or reduced in size and proportion. In the following description and/or claims, when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present; When "directly connected" or "directly coupled" to another element, there are no intervening elements present, and other words used to describe the relationship between elements or layers should be interpreted in the same fashion; "first," "second," etc. The ordinal numbers have no sequential relationship with each other, and are only used to identify and distinguish two different elements with the same name. For ease of understanding, the same elements in the following embodiments are denoted by the same symbols.

請參照第1圖，為本發明一實施例之結構俯視示意圖。如第1圖所示，兼顧熱傳導與熱擴散之車用LED燈散熱模組100包含有：LED燈101、軟性電路板102、導熱本體103、熱管部1030、金屬殼體104、襯套105、鰭片散熱體106及風扇107。Please refer to FIG. 1 , which is a schematic top view of the structure of an embodiment of the present invention. As shown in FIG. 1 , the heat dissipation module 100 for a vehicle LED lamp with both heat conduction and heat diffusion includes: an LED lamp 101 , a flexible circuit board 102 , a thermally conductive body 103 , a heat pipe portion 1030 , a metal shell 104 , a bushing 105 , Fin radiator 106 and fan 107 .

導熱本體103與金屬殼體104接觸。導熱本體103為多面體所構成。所述多面體的每一表面朝向不同。所述多面體可以例如是三角形、矩形、正多邊形等。導熱本體103的外觀結構可根據LED發光角度需求進行對應的設計、調整與變化。導熱本體103用以吸收LED燈101發光時或熄滅後產生的熱能。在本實施例中，導熱本體103為單一材質結構。舉例而言，導熱本體103為銅材質。所述銅材質的熱膨脹係數(Coefficient of Thermal Expansion，CTE)介於16~19ppm/K之間。The thermally conductive body 103 is in contact with the metal casing 104 . The thermally conductive body 103 is formed of a polyhedron. Each surface of the polyhedron is oriented differently. The polyhedron may be, for example, a triangle, a rectangle, a regular polygon, or the like. The appearance structure of the thermally conductive body 103 can be designed, adjusted and changed correspondingly according to the requirements of the LED lighting angle. The heat-conducting body 103 is used for absorbing the heat energy generated when the LED lamp 101 emits light or after it is extinguished. In this embodiment, the thermally conductive body 103 is a single material structure. For example, the thermally conductive body 103 is made of copper. The coefficient of thermal expansion (CTE) of the copper material is between 16-19 ppm/K.

熱管部1030具有與導熱本體103相同的材質。熱管部1030係一體成形於導熱本體103的一端。熱管部1030的另一端穿設於金屬殼體104之內側。熱管部1030之內部為真空腔體，並具有毛細結構與工作流體。所述的毛細結構可以例如是網狀(Mesh)、溝狀(Groove)或纖維狀(Fiber)等。所述的工作流體吸收LED燈101產生的熱能後呈現一氣體狀態，並於熱管部1030之另一端凝結回一液體狀態，再藉由毛細結構吸回靠近導熱本體103的一端，進而形成氣-液循環。在一些實施例中，導熱本體103與熱管部1030可以非一體成型結構，而採用套設方式彼此結合，例如，將導熱本體103套設於熱管部1030的一端。The heat pipe portion 1030 has the same material as the thermally conductive body 103 . The heat pipe portion 1030 is integrally formed on one end of the heat conducting body 103 . The other end of the heat pipe portion 1030 is penetrated inside the metal casing 104 . The inside of the heat pipe part 1030 is a vacuum cavity, and has a capillary structure and a working fluid. The capillary structure can be, for example, mesh, groove, or fiber. The working fluid absorbs the heat energy generated by the LED lamp 101 and assumes a gas state, and condenses back to a liquid state at the other end of the heat pipe portion 1030, and then sucks back the end close to the heat conducting body 103 through the capillary structure, thereby forming a gas- fluid circulation. In some embodiments, the thermally conductive body 103 and the heat pipe portion 1030 may be non-integrated and combined with each other in a sheathing manner, for example, the thermally conductive body 103 is sheathed on one end of the heat pipe portion 1030 .

更具體的說，熱管部1030靠近導熱本體103的一端為蒸發端，工作流體吸收LED燈101產生的熱能後而氣化。熱管部1030靠近鰭片散熱體106的一端為冷凝端，工作流體遇到相對冷的區域後而液化。實際上，工作流體可以例如是甲醇、水、丙酮或汞等。More specifically, the end of the heat pipe portion 1030 close to the heat conducting body 103 is the evaporation end, and the working fluid absorbs the heat energy generated by the LED lamp 101 and then evaporates. One end of the heat pipe portion 1030 close to the finned radiator 106 is a condensation end, and the working fluid liquefies after encountering a relatively cold area. In practice, the working fluid may be, for example, methanol, water, acetone or mercury, among others.

金屬殼體104為多面體所構成。所述多面體的每一表面朝向不同。所述多面體可以例如是三角形、矩形、正多邊形等。金屬殼體104的外觀結構可根據LED發光角度需求進行對應的設計、調整與變化。金屬殼體104的外側用以承載軟性電路板102。金屬殼體104的內側用以容納熱管部1030。金屬殼體104可以例如是鋁材質。The metal casing 104 is formed of a polyhedron. Each surface of the polyhedron is oriented differently. The polyhedron may be, for example, a triangle, a rectangle, a regular polygon, or the like. The appearance structure of the metal casing 104 can be designed, adjusted and changed correspondingly according to the LED lighting angle requirements. The outer side of the metal casing 104 is used to carry the flexible circuit board 102 . The inner side of the metal casing 104 is used for accommodating the heat pipe part 1030 . The metal housing 104 may be, for example, an aluminum material.

LED燈101設置於導熱本體103上。LED燈101與軟性電路板102彼此電性連接。LED燈101由軟性電路板102驅動而發亮。實際上，軟性電路板102可以例如是柔性印刷電路板(Flexible Printed Circuit，FPC)。另外，軟性電路板102透過第一固定件202(如第3圖所示)固定於金屬殼體104上。第一固定件202可以例如是螺絲、鉚釘等。The LED lamp 101 is disposed on the heat conducting body 103 . The LED lamp 101 and the flexible circuit board 102 are electrically connected to each other. The LED lamp 101 is driven by the flexible circuit board 102 to emit light. In practice, the flexible circuit board 102 may be, for example, a flexible printed circuit (Flexible Printed Circuit, FPC). In addition, the flexible circuit board 102 is fixed on the metal casing 104 through the first fixing member 202 (as shown in FIG. 3 ). The first fixing member 202 may be, for example, a screw, a rivet or the like.

請一併參照第2圖與第3圖，第2圖為本發明一實施例之結構組合示意圖，第3圖為本發明一實施例之另一視角結構組合示意圖。如第2圖所示，可更清楚看出導熱本體103與金屬殼體104為多面體結構。Please refer to FIG. 2 and FIG. 3 together. FIG. 2 is a schematic diagram of a structural combination according to an embodiment of the present invention, and FIG. 3 is a schematic diagram of a structural combination of another viewing angle according to an embodiment of the present invention. As shown in FIG. 2 , it can be clearly seen that the thermally conductive body 103 and the metal shell 104 are polyhedral structures.

如第3圖所示，襯套105設置於金屬殼體104與鰭片散熱體106之間。襯套105用以與一車體燈殼進行固定。另外，襯套105具有耐高溫的特性。在一些實施例中，襯套105也可以省略。As shown in FIG. 3 , the bushing 105 is provided between the metal case 104 and the fin heat sink 106 . The bushing 105 is used for fixing with a vehicle body lamp housing. In addition, the bushing 105 has high temperature resistance properties. In some embodiments, the bushing 105 may also be omitted.

鰭片散熱體106的一端與熱管部1030接觸。鰭片散熱體106用以擴散熱管部1030所傳導的熱能。鰭片散熱體106的另一端與風扇107接觸。鰭片散熱體106的整體外觀大致上為輻射狀的圓形所構成。在一些實施中，鰭片散熱體106的外觀也可以是輻射狀的三邊形、四邊形或多邊形所構成。鰭片散熱體106為鋁材質。所述鋁材質的熱膨脹係數介於18~21ppm/K之間。One end of the fin heat sink 106 is in contact with the heat pipe portion 1030 . The fin heat sink 106 is used for dissipating the heat energy conducted by the heat pipe portion 1030 . The other end of the fin heat sink 106 is in contact with the fan 107 . The overall appearance of the fin heat sink 106 is generally formed of a radial circle. In some implementations, the appearance of the fin heat sink 106 may also be formed by a radial triangle, a quadrangle or a polygon. The fin heat sink 106 is made of aluminum. The thermal expansion coefficient of the aluminum material is between 18 and 21 ppm/K.

請參照第4圖，為本發明一實施例之結構分解示意圖。如第4圖所示，由Z軸方向觀看導熱本體103，具有與金屬殼體104相似的外觀形狀。Please refer to FIG. 4 , which is a schematic exploded view of the structure of an embodiment of the present invention. As shown in FIG. 4 , when viewed from the Z-axis direction, the thermally conductive body 103 has an external shape similar to that of the metal case 104 .

導熱本體103與LED燈101直接接觸(如第1圖所示)。導熱本體103用以吸收LED燈101產生的熱能。由於導熱本體103與LED燈101為直接接觸，因此可快速吸收LED燈101產生的熱能。在一些實施例中，導熱本體103與LED燈101的接觸面之間，可填補低熱阻之散熱膠，來減少介面熱阻，並提升散熱效率。The thermally conductive body 103 is in direct contact with the LED lamp 101 (as shown in FIG. 1 ). The thermally conductive body 103 is used for absorbing the thermal energy generated by the LED lamp 101 . Since the thermally conductive body 103 is in direct contact with the LED lamp 101 , the thermal energy generated by the LED lamp 101 can be quickly absorbed. In some embodiments, between the contact surfaces of the thermally conductive body 103 and the LED lamp 101 , a heat-dissipating adhesive with low thermal resistance can be filled to reduce the interface thermal resistance and improve the heat-dissipation efficiency.

熱管部1030的外觀大致上呈現圓柱狀結構。導熱本體103與熱管部1030接觸。熱管部1030用以傳導導熱本體103所吸收的熱能至鰭片散熱體106。The appearance of the heat pipe portion 1030 is substantially cylindrical. The thermally conductive body 103 is in contact with the heat pipe portion 1030 . The heat pipe portion 1030 is used for conducting the thermal energy absorbed by the thermally conductive body 103 to the fin heat sink 106 .

導熱本體103的外觀結構可配合LED燈101的數量與發光角度需求進行設計與變化，以搭配著不同的LED燈101數量去安裝，達到了節能且散熱的目標。The appearance and structure of the thermally conductive body 103 can be designed and changed according to the quantity and lighting angle of the LED lamps 101 , so as to be installed with different quantities of the LED lamps 101 , so as to achieve the goal of energy saving and heat dissipation.

值得說明的是，熱管部1030與鰭片散熱體106具有不同的熱膨脹係數。但因兩者的熱膨脹係數相差不大，故可以透過將熱管部1030與鰭片散熱體106接觸部分的尺寸加厚，以使熱管部1030與鰭片散熱體106可以達到緊密配合。在一些實施例中，熱管部1030與鰭片散熱體106的接觸面之間，可填補低熱阻之散熱膠，來減少介面熱阻，並提升散熱效率。It should be noted that the heat pipe portion 1030 and the fin heat sink 106 have different thermal expansion coefficients. However, since the thermal expansion coefficients of the two are not much different, the size of the contact portion of the heat pipe portion 1030 and the fin heat sink 106 can be increased so that the heat pipe portion 1030 and the fin heat sink 106 can be closely matched. In some embodiments, between the contact surface of the heat pipe portion 1030 and the fin heat sink 106 , a heat dissipation glue with low thermal resistance can be filled to reduce the interface thermal resistance and improve the heat dissipation efficiency.

風扇107設置於鰭片散熱體106一端。風扇107包含有葉片1070與風扇外殼1072所組成。風扇107利用強制對流來加快鰭片散熱體106的熱擴散，並用以排除鰭片散熱體106擴散的熱能。藉此，風扇107可縮短散熱的時間，減少熱的累積，也可以提高LED燈101的效能與壽命。實際上，風扇107可以例如是軸流風扇。另外，風扇107可透過第二固定件(圖中為示)鎖固於鰭片散熱體106上。第二固定件可以例如是螺絲、鉚釘等。The fan 107 is disposed at one end of the fin heat sink 106 . The fan 107 includes blades 1070 and a fan casing 1072 . The fan 107 utilizes forced convection to speed up the heat diffusion of the fin heat sink 106 and is used to remove the heat energy diffused by the fin heat sink 106 . In this way, the fan 107 can shorten the heat dissipation time, reduce the accumulation of heat, and can also improve the performance and life of the LED lamp 101 . In practice, the fan 107 may be, for example, an axial fan. In addition, the fan 107 can be locked on the fin heat sink 106 through a second fixing member (shown in the figure). The second fixing member may be, for example, a screw, a rivet, or the like.

在本實施例中，導熱本體103、熱管部1030、鰭片散熱體106與風扇107設置於同一軸向(例如，Z軸)上。藉此，風扇107產生的對流可快速將LED燈101產生的熱能有效排除，並配合導熱本體103、熱管部1030、鰭片散熱體106的組合結構，快速將LED燈101產生的熱能吸收、導熱、擴散與排除。In this embodiment, the thermally conductive body 103 , the heat pipe portion 1030 , the finned heat sink 106 and the fan 107 are disposed on the same axis (eg, Z axis). In this way, the convection generated by the fan 107 can quickly and effectively remove the heat energy generated by the LED lamp 101 , and with the combined structure of the heat conducting body 103 , the heat pipe portion 1030 and the fin heat sink 106 , the heat energy generated by the LED lamp 101 can be quickly absorbed and conduct heat. , diffusion and exclusion.

請參照第5圖，為本發明另一實施例之結構分解示意圖。如第5圖所示，由Z軸方向觀看導熱本體103，具有與金屬殼體104相似的外觀形狀。第5圖實施例與第4圖實施例不同之處在於：第5圖實施例之導熱本體103與熱管部1030為一體成形的結構，其餘結構相同，於此不再贅述。Please refer to FIG. 5 , which is an exploded schematic diagram of another embodiment of the present invention. As shown in FIG. 5 , when viewed from the Z-axis direction, the thermally conductive body 103 has an external shape similar to that of the metal case 104 . The difference between the embodiment in FIG. 5 and the embodiment in FIG. 4 is that the thermally conductive body 103 and the heat pipe portion 1030 in the embodiment in FIG. 5 are integrally formed, and other structures are the same, and will not be repeated here.

由於導熱本體103與熱管部1030為一體成形的結構。藉此，導熱本體103與熱管部1030沒有熱轉介面的問題。在本實施例中，所述一體成形的結構可以利用擠型或鍛造的製造方式來進行加工。Due to the structure of the heat conducting body 103 and the heat pipe part 1030 being integrally formed. Therefore, there is no problem of heat transfer interface between the thermally conductive body 103 and the heat pipe portion 1030 . In this embodiment, the integrally formed structure may be processed by extrusion or forging.

接下來，請參照第6圖為本發明實施例與習知技術之散熱溫度變化實驗數據圖。如第6圖所示，橫軸為時間，縱軸為溫度。習知技術(標示為虛線)採用單一材質(例如，全銅或全鋁)散熱模組，其散熱結構與本發明實施例(標示為實線)不同。在90秒時，習知技術的車用LED燈的溫度約58℃，而本發明實施例之車用LED燈的溫度約52℃。在210秒時，習知技術的車用LED燈的溫度約67℃，而本發明實施例之車用LED燈達到平衡溫度約60℃。在270秒時，習知技術的車用LED燈的溫度約69℃，而本發明實施例之車用LED燈的溫度約60℃。在390秒時，習知技術的車用LED燈達到了平衡溫度約71℃。由實驗結果可得知，採用本發明實施例之兼顧熱傳導與熱擴散之車用LED燈可以更快速的達到散熱目標，同時擁有較低的飽和溫度。相較於習知技術而言，本發明實施例的散熱效率提升約15%。Next, please refer to FIG. 6 , which is a graph of experimental data of heat dissipation temperature variation according to the embodiment of the present invention and the prior art. As shown in Fig. 6, the horizontal axis is time, and the vertical axis is temperature. The conventional technology (marked by the dotted line) uses a single material (eg, all-copper or all-aluminum) heat dissipation module, and its heat dissipation structure is different from that of the embodiment of the present invention (marked by the solid line). At 90 seconds, the temperature of the vehicle LED lamp of the prior art is about 58°C, while the temperature of the vehicle LED lamp of the embodiment of the present invention is about 52°C. At 210 seconds, the temperature of the conventional vehicle LED lamp is about 67°C, while the vehicle LED lamp of the embodiment of the present invention reaches an equilibrium temperature of about 60°C. At 270 seconds, the temperature of the vehicle LED lamp of the prior art is about 69°C, while the temperature of the vehicle LED lamp of the embodiment of the present invention is about 60°C. At 390 seconds, the prior art automotive LED light reached an equilibrium temperature of about 71°C. From the experimental results, it can be known that the vehicle LED lamp with both heat conduction and heat diffusion according to the embodiment of the present invention can achieve the heat dissipation target more quickly and at the same time have a lower saturation temperature. Compared with the prior art, the heat dissipation efficiency of the embodiment of the present invention is improved by about 15%.

綜上所述，本發明之兼顧熱傳導與熱擴散之車用LED燈散熱模組，利用一體化的柱狀導熱體減少熱轉換介面，並降低熱阻的問題。另外，由於銅材質的柱狀導熱體具有良好的熱傳導性，而鋁材質的鰭片散熱體具有良好的熱擴散性，搭配內嵌式的風扇設計，可快速且有效效地排除LED燈產生的熱能。To sum up, the heat dissipation module for vehicle LED lamps of the present invention, which takes both heat conduction and heat diffusion into consideration, utilizes the integrated columnar heat conductor to reduce the problem of heat transfer interface and thermal resistance. In addition, since the columnar heat conductor made of copper has good thermal conductivity, and the finned heat sink made of aluminum has good thermal diffusivity, with the built-in fan design, it can quickly and effectively eliminate the heat generated by LED lights. thermal energy.

根據本發明實施例之柱狀導熱體可採用一體成型結構，除了減少熱轉換介面，並降低熱阻的問題外，由於柱狀導熱體直接與LED燈接觸的關係，故可快速吸收LED燈產生的熱能，並導往鰭片散熱體與風扇排除熱能。According to the embodiment of the present invention, the columnar heat conductor can adopt an integral molding structure. In addition to reducing the thermal conversion interface and thermal resistance, the columnar heat conductor is in direct contact with the LED lamp, so it can quickly absorb the generation of the LED lamp. The heat energy is guided to the fin heat sink and the fan to remove the heat energy.

根據本發明另一實施例之柱狀導熱體採用非一體成型結構，在製造與加工上較為方便，相對可降低車用LED燈複合材質散熱模組的製造成本。According to another embodiment of the present invention, the columnar heat conducting body adopts a non-integrated molding structure, which is convenient in manufacture and processing, and can relatively reduce the manufacturing cost of the composite material heat dissipation module of the vehicle LED lamp.

根據本發明實施例之鰭片散熱體具有凹槽結構，用以容納風扇。藉此，可縮小車用LED燈複合材質散熱模組的體積，符合輕薄短小的設計趨勢。The fin heat sink according to the embodiment of the present invention has a groove structure for accommodating a fan. In this way, the volume of the composite material heat dissipation module of the vehicle LED lamp can be reduced, which conforms to the design trend of light, thin and short.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，故本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

100:兼顧熱傳導與熱擴散之車用LED燈散熱模組 101:LED燈 102:軟性電路板 103:導熱本體 1030:熱管部 104:金屬殼體 105:襯套 106:鰭片散熱體 107:風扇 1070:葉片 1072:風扇外殼 202:第一固定件 100: Heat dissipation module for automotive LED lamps that takes into account both heat conduction and heat diffusion 101: LED lights 102: Flexible circuit board 103: Thermal body 1030: Heat Pipe Department 104: Metal shell 105: Bushing 106: Fin heat sink 107: Fan 1070: Blade 1072: Fan Housing 202: First Fixture

第1圖為本發明一實施例之結構俯視示意圖。 第2圖為本發明一實施例之結構組合示意圖。 第3圖為本發明一實施例之另一視角結構組合示意圖。 第4圖為本發明一實施例之結構分解示意圖。 第5圖為本發明另一實施例之結構分解示意圖。 第6圖為本發明實施例與習知技術之散熱溫度變化實驗數據圖。 FIG. 1 is a schematic top view of the structure of an embodiment of the present invention. FIG. 2 is a schematic diagram of a structural combination according to an embodiment of the present invention. FIG. 3 is a schematic diagram of another viewing angle structure combination according to an embodiment of the present invention. FIG. 4 is a schematic exploded view of the structure of an embodiment of the present invention. FIG. 5 is a schematic exploded view of the structure of another embodiment of the present invention. FIG. 6 is an experimental data diagram of the variation of heat dissipation temperature according to the embodiment of the present invention and the prior art.

100:兼顧熱傳導與熱擴散之車用LED燈散熱模組 100: Heat dissipation module for automotive LED lamps that takes into account both heat conduction and heat diffusion

101:LED燈 101: LED lights

102:軟性電路板 102: Flexible circuit board

103:導熱本體 103: Thermal body

1030:熱管部 1030: Heat Pipe Department

104:金屬殼體 104: Metal shell

105:襯套 105: Bushing

106:鰭片散熱體 106: Fin heat sink

107:風扇 107: Fan

1070:葉片 1070: Blade

1072:風扇外殼 1072: Fan Housing

Claims (9)

一種兼顧熱傳導與熱擴散之車用LED燈散熱模組，包含有：一金屬殼體；一導熱本體，與該金屬殼體接觸；至少一LED燈，設置於該導熱本體上；一熱管部，一體成形於該導熱本體的一端，並穿設於該金屬殼體之內側；一鰭片散熱體，與該熱管部接觸；及一風扇，設置於該鰭片散熱體之一端，以排除該鰭片散熱體擴散的熱能；其中該導熱本體為一多面體，且每一面分別與該至少一LED燈直接接觸，用以吸收該至少一LED燈產生的熱能，並由該熱管部傳導所吸收的熱能至該鰭片散熱體，而該鰭片散熱體用以擴散該熱管部傳導的熱能。 A heat dissipation module for a vehicle LED lamp that takes into account both heat conduction and heat diffusion, comprising: a metal shell; It is integrally formed on one end of the heat-conducting body and passes through the inner side of the metal shell; a finned radiator is in contact with the heat pipe; and a fan is arranged on one end of the finned radiator to remove the fins The heat energy diffused by the fin heat sink; wherein the thermally conductive body is a polyhedron, and each side is in direct contact with the at least one LED lamp, so as to absorb the heat energy generated by the at least one LED lamp and conduct the absorbed heat energy by the heat pipe portion to the fin heat sink, and the fin heat sink is used for dispersing the heat energy conducted by the heat pipe portion. 如請求項1所述之兼顧熱傳導與熱擴散之車用LED燈散熱模組，其中該熱管部之內部具有一毛細結構與一工作流體，該工作流體吸收該至少一LED燈產生的熱能後呈現一氣體狀態，並於該熱管部之另一端凝結回一液體狀態。 As claimed in claim 1, the heat dissipation module for a vehicle LED lamp with both heat conduction and heat diffusion, wherein the heat pipe portion has a capillary structure and a working fluid inside, and the working fluid absorbs the heat energy generated by the at least one LED lamp and presents a gas state, and condenses back to a liquid state at the other end of the heat pipe. 如請求項1所述之兼顧熱傳導與熱擴散之車用LED燈散熱模組，其中該熱管部之外觀呈現一圓柱狀結構。 The heat dissipation module for a vehicle LED lamp with both heat conduction and heat diffusion as claimed in claim 1, wherein the appearance of the heat pipe portion presents a cylindrical structure. 如請求項1所述之兼顧熱傳導與熱擴散之車用LED燈散熱模組，其中該金屬殼體為一多面體，且具有與該導熱本體之該多面體相同的面數。 The heat dissipation module for a vehicle LED lamp with both heat conduction and heat diffusion as claimed in claim 1, wherein the metal shell is a polyhedron having the same number of faces as the polyhedron of the thermally conductive body. 如請求項1所述之兼顧熱傳導與熱擴散之車用LED燈散熱模組，其中該導熱本體為銅材質，而該鰭片散熱體為鋁材質。 The heat dissipation module for a vehicle LED lamp with both thermal conduction and heat diffusion as claimed in claim 1, wherein the thermally conductive body is made of copper, and the fin heat sink is made of aluminum. 如請求項5所述之兼顧熱傳導與熱擴散之車用LED燈散熱模組，其中該銅材質的熱膨脹係數介於16~19ppm/K之間，而該鋁材質的熱膨脹係數介於18~21ppm/K之間。 The heat dissipation module for automotive LED lamps with both thermal conduction and thermal diffusion as claimed in claim 5, wherein the thermal expansion coefficient of the copper material is between 16 and 19 ppm/K, and the thermal expansion coefficient of the aluminum material is between 18 and 21 ppm. /K. 如請求項1所述之兼顧熱傳導與熱擴散之車用LED燈散熱模組，其中該金屬殼體與該鰭片散熱體之間還設置有一襯套，用以與一車體燈殼進行固定。 As claimed in claim 1, the heat dissipation module for a vehicle LED lamp with both heat conduction and heat diffusion is provided, wherein a bushing is further arranged between the metal casing and the fin heat sink for fixing with a vehicle body lamp casing . 如請求項1所述之兼顧熱傳導與熱擴散之車用LED燈散熱模組，其中該導熱本體、該熱管部、該鰭片散熱體與該風扇設置於同一軸向上。 The heat dissipation module for a vehicle LED lamp with both heat conduction and heat diffusion as claimed in claim 1, wherein the heat conducting body, the heat pipe portion, the fin heat sink and the fan are disposed on the same axis. 如請求項1所述之兼顧熱傳導與熱擴散之車用LED燈散熱模組，其中該金屬殼體上還設置有至少一軟性電路板，以驅動該至少一LED燈發亮。 The heat dissipation module for a vehicle LED lamp with both heat conduction and heat diffusion as claimed in claim 1, wherein at least one flexible circuit board is further disposed on the metal casing to drive the at least one LED lamp to light up.
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TWM520604U (en) * 2015-06-24 2016-04-21 Coplus Inc Light-bulb
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