TWI573959B

TWI573959B - High heat dissipating lamp

Info

Publication number: TWI573959B
Application number: TW103125088A
Authority: TW
Inventors: 林郅燊; 洪銘琪; 王建發
Original assignee: 玉晶光電股份有限公司
Priority date: 2014-07-22
Filing date: 2014-07-22
Publication date: 2017-03-11
Also published as: TW201604486A

Description

High heat dissipation lamp

The invention relates to a lighting fixture; in particular to a high-power LED as a light source, and the lamp has a heat sink to assist the heat sink of the lamp.

In general, high-power lamps, such as industrial and mining lamps, road lights, stadium lights, etc., in order to save energy and improve heat generation, most of them use high-power LEDs as light sources, but LEDs are prone to generate a lot of heat when they emit light, which causes the lamps to overheat and Reducing the life of the luminaire, so the heat dissipation design on the luminaire has always been the focus of the relevant industry to improve.

It is known that the high-power LED is used as the light source of the lamp. The heat dissipation design is nothing more than the "large LED lamp" of China Patent Certificate No. M452307, which is coated with the heat-dissipating paint on the surface of the LED lamp board and the heat-dissipating lamp cover. In order to produce the effect of rapid heat dissipation, most of them can no longer effectively remove the heat around the heat-dissipating paint, so the heat-dissipating effect is limited; or, as for the patent certificate No. M416037, "an LED industrial light", it is additionally installed on the lamp. Heat sinks such as heat sinks or fans are provided. However, the additional heat sinks increase the weight of the fixture itself and are not conducive to use.

In view of this, the inventor has conceived and studied more deeply. Invented a high heat dissipation lamp.

The invention provides a high heat dissipation lamp whose main purpose is to maintain the lamp with a high efficiency heat dissipation without increasing the weight of the lamp.

To achieve the foregoing objective, the present invention provides a high heat dissipation lamp, comprising: a heat sink comprising a rectangular bottom wall, the bottom wall having a lower end surface and an upper end surface opposite to the lower end surface, wherein the bottom wall is two Forming a sidewall on the side of the opposite side, the bottom wall is formed with a plurality of heat dissipation fins facing the upper end, and each of the heat dissipation fins has an air flow passage; and an air supply device is disposed on the heat sink The airflow generated by the air blowing device is freely circulated in the airflow passage; and at least one light component is disposed on a lower end surface of the bottom wall of the heat sink, and the light component comprises at least one LED module.

The invention utilizes the provided high heat dissipation luminaire, and the obtained function is that the lamp component of the luminaire comprises at least one LED module, and the lamp component is directly disposed on the bottom wall of a heat sink, thereby eliminating the need for An additional heat sink is added to avoid adding weight to the luminaire; in addition, the heat sink has an air flow passage and generates a gas flow in the air flow passage through a air supply device, thereby effectively removing heat energy to improve heat dissipation efficiency.

The present invention has been described in connection with the preferred embodiments of the present invention in accordance with the accompanying drawings.

〔this invention〕

20‧‧‧ radiator

21‧‧‧ bottom wall

211‧‧‧ lower end

212‧‧‧ upper end

22‧‧‧ side wall

23‧‧‧ Heat sink fins

231‧‧‧ Groove

24‧‧‧Air passage

25‧‧‧ openings

26‧‧‧Connecting Department

27‧‧‧ ribs

28‧‧‧Connecting piece

281‧‧‧through hole

29‧‧‧Locks

30‧‧‧Upper cover

301‧‧‧ Positioning wall

31‧‧‧ top wall

311‧‧‧ lower end

312‧‧‧ upper end

32‧‧‧Bound wall

33‧‧‧Fixed parts

34‧‧‧Perforation

35‧‧‧Air supply device

36‧‧‧Heat fins

361‧‧‧ Groove

37‧‧‧Air passage

38‧‧‧Waterproof box

381‧‧‧through hole

39‧‧‧ Thermal patch

40‧‧‧Lights

41‧‧‧LED module

42‧‧‧reflector

43‧‧‧ Thermal patch

44‧‧‧ copper substrate

45‧‧‧Cover parts

46‧‧‧ flat glass

47‧‧‧Under the cover

48‧‧‧Locks

49‧‧‧ water ring

50‧‧‧Support frame

70‧‧‧Mold

701‧‧‧ protruding parts

71‧‧‧Power supply

1 is a perspective view of an embodiment of the present invention.

2 is an exploded perspective view of an embodiment of the present invention.

Figure 3 is a cross-sectional view of an embodiment of the present invention.

Figure 4 is a plan view of an embodiment of the present invention.

Figure 5 is another perspective cross-sectional view of an embodiment of the present invention.

Fig. 6 is a schematic view showing the heat sink of the embodiment of the present invention when it is molded through a mold.

Figure 7 is an exploded perspective view of a lamp member in accordance with an embodiment of the present invention.

Figure 8 is a cross-sectional view showing another embodiment of the present invention.

Figure 9 is a perspective view of a heat sink according to another embodiment of the present invention.

Figure 10 is a side elevational view of yet another embodiment of the present invention.

Figure 11 is a partial cross-sectional view showing still another embodiment of the present invention.

Figure 12 is a partial cross-sectional view showing still another embodiment of the present invention.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

In order to enable the reviewing committee to have a better understanding and understanding of the purpose, features and effects of the present invention, the following is a detailed description of the following: a preferred embodiment of the high heat dissipation luminaire of the present invention, for example, FIG. As shown in FIG. 7 , a heat sink 20 , an air blowing device 35 , and at least one light component 40 are included And a support frame 50, wherein the heat sink 20 includes a rectangular bottom wall 21 having a lower end surface 211 and an upper end surface 212 opposite to the lower end surface 211, wherein two of the bottom walls 21 are opposite A side wall 22 is formed on the side of the side wall, and the bottom wall 21 and the two side walls 22 are formed in a meandering structure. The bottom wall 21 and the plurality of heat dissipation fins 23 are formed upwardly on the upper end surface 212. The heat dissipating fins 23 and the side walls 22 are both parallel, such that each of the heat dissipating fins 23 has an air flow passage 24, and the other two sides of the bottom wall 21 are formed with an opening 25, and the bottom wall 21 is at the opening 25 The connecting portion 26 has a connecting portion 26, and the upper end surface 212 of the bottom wall 21 does not have the heat dissipating fins 23 at the connecting portion 26, that is, the upper end surface 212 of the bottom wall 21 is flat on the connecting portion 26. The heat dissipating fins 23 are formed with a plurality of grooves 231, thereby increasing the area of heat dissipation; the bottom wall 21 is formed with a rib on the outer side of the side wall 22 27; the heat sink 20 has two connecting pieces 28, and the connecting piece 28 is an L-shaped sheet structure, the two connections The two connecting portions 26 are respectively coupled to the two connecting portions 26 of the bottom wall 21, and the connecting piece 28 is locked to the connecting portion 26 through a plurality of locking members 29; An upper cover 30 is defined between the side walls 22, and the upper cover 30 has a top wall 31 having a lower end surface 311 and an upper end surface 312 opposite to the lower end surface 311, and two opposite sides of the top wall 31 The edge system respectively extends downwardly to form a bonding wall 32, and the upper cover 30 is The two connecting walls 32 are spanned on the two side walls 22, and the connecting wall 32 and the side wall 22 are locked by a plurality of fixing members 33. The air blowing device 35 is mounted on the heat sink 20, in this embodiment, The air blowing device 35 is fixed on the top wall 31 of the upper cover 30. In more detail, the upper cover 30 defines a through hole 34 on the top wall 31. The position of the air blowing device 35 is opposite to the through hole 34. Correspondingly, the air outlet is directed toward the airflow passage 24 of the radiator 20, whereby the airflow generated by the air blowing device 35 collides with the bottom wall 21 of the radiator 20, and is freely circulated in the airflow passage 24. Openings 25 on the two sides of the heat sink 20 to assist in the removal of heat energy in the air flow passage 24; the air blowing device 35 can also be reversely mounted, that is, the air inlet passage 24 facing the heat sink 20 with the air suction port, thereby also having The light source 40 is disposed on the lower end surface 211 of the bottom wall 21 of the heat sink 20, and the light unit 40 includes at least one LED module 41. In this embodiment, The number of the lamp members 40 is two, and is respectively located at two ends of the bottom wall 21; the lamp member 40 includes A reflective cover 42 , a thermal conductive patch 43 , a copper substrate 44 , a cover member 45 , a flat glass 46 , and a lower cover member 47 . The at least one LED module 41 is disposed on one end of the copper substrate 44 . The reflector 42 is fixed to the lower end surface 211 of the bottom wall 21 through a plurality of locking members 48, and surrounds the at least one LED module 41. The heat conducting patch 43 is coupled to the lower end surface of the bottom wall 21. 211, the copper substrate 44 is coupled to the heat conductive patch 43 by an end surface of the LED module 41, and is locked to the bottom wall 21, and the flat glass 46 is Covering the copper substrate 44 with the cover member 45, and locking the lower cover member 47, the flat glass 46, the cover member 45 and the heat sink 20 through the plurality of lock members 48, the heat sink 20 and A water stop ring 49 is disposed between the cover member 45, the cover member 45 and the flat glass 46, and between the flat glass 46 and the lower cover member 47. The flat glass 46 is made of reinforced optical glass. Therefore, the light output rate can be increased and the light loss of the plastic aging can be reduced; the flat glass 46 is closely assembled by the cover member 45 and the lower cover member 47, and if the luminaire is impacted, the force can be transferred to the body of the heat sink 20, thereby Protecting the flat glass 46; the support frame 50 is substantially dome-shaped, and the two ends of the support frame 50 are respectively locked on the two connecting pieces 28, and the support frame 50 is pivotable relative to the heat sink 20, The connecting piece 28 has a plurality of through holes 281 for the user to change the illumination angle of the lamp.

The above description is the main components of the embodiment of the present invention and their configuration description. As shown in FIG. 3 and FIG. 5, the heat sink 20 of the present invention has a plurality of heat dissipation fins 23 formed on the bottom wall 21 thereof, and between the heat dissipation fins 23 Each has an air flow passage 24, whereby the air supply device 35 can generate an air flow in the air flow passage 24 to assist in eliminating thermal energy in the air flow passage 24 to improve heat dissipation efficiency.

Referring to FIG. 6, the heat sink 20 of the present invention is designed by using an aluminum extrusion type through a mold 70. It is to be noted that since the heat radiating fins 23 are elongated structures, the mold 70 for forming the heat radiating fins 23 is also formed with elongated projections 701. However, if the heat sink fin 23 and the mold 70 are The longer the length, the more easily the damage is broken due to the force. Therefore, in order to make the molding process smoother, the heat dissipation fins 23 of the present invention are designed to be unequal to reduce the projections 701 of the mold 70. The length is thereby facilitated the manufacture of the heat sink 20.

In addition, as shown in FIG. 8 , in order to improve the heat dissipation efficiency of the heat sink 20 , the lower end surface 311 of the top wall 31 of the upper cover 30 can also form a plurality of heat dissipation fins 36 downwardly, and the heat dissipation fins 36 of the upper cover 30 are connected to each other. The upper cover 30 is also designed and manufactured by an aluminum extrusion type, and is coupled to the bottom wall 21 of the heat sink 20 in cooperation with the rib 27, and each of the heat dissipation fins 36 of the upper cover 30 has a heat dissipation fin 36. A plurality of grooves 361. It is to be noted that the rib 27 is formed on the outer side of one side of the bottom wall 21, and the top wall of the upper cover 30 is also formed with a positioning wall on one side of the lower end surface 311 with respect to one side of the rib 27. 301. Thereby, when the upper cover 30 is combined with the bottom wall 21, the ribs 27 and the positioning wall 301 are abutted against each other and positioned to assist the upper cover 30 to stably engage with the bottom wall 21.

Referring to FIG. 9 and FIG. 8 , the lower end surface 311 of the top wall 31 of the upper cover 30 is formed with a plurality of heat dissipation fins 36 downwardly, and the upper cover 30 is provided with a through hole 34 in the top wall 31. That is, the perforation 34 is as shown in the figure, and has no heat dissipation fins 36, thereby facilitating the installation of the air supply device 35 in the through hole 34 of the upper cover 30.

The applicant specifically describes that the air blowing device 35 of the present invention can be installed at different positions in the heat sink 20. For example, as shown in FIG. 10, the air blowing device 35 is installed on the bottom wall of the heat sink 20. Piercing of 21 (not shown in the figure) In this way, the overall size of the luminaire can be saved to suit different places.

In addition, as shown in FIG. 11 , the upper cover 30 is not formed with heat dissipation fins, and the lower end surface 311 of the top wall 31 of the upper cover 30 is further formed to have at least one waterproof box 38, and each of the waterproof boxes 38 is The number of the waterproof boxes 38 is two in the embodiment, and the number of the waterproof boxes 38 is two. For example, the waterproof case 38 is provided with a power supply 71. The waterproof case 38 is provided with a through hole 381 for the power supply line of the power supply unit 71. Further, the waterproof case 38 is provided. The surface has a thermally conductive patch 39 to assist in the dissipation of heat from the contents of the waterproof case 38.

Referring to FIG. 12, the lamp has only one lamp member 40, and the air blowing device 35 is installed at one of the openings 25 of the heat sink 20. In more detail, the bottom wall 21 is at the opening 25. The cable has a connecting portion, and one end of the L-shaped connecting piece 28 is respectively fixedly coupled to the connecting portion, and the air blowing device 35 is locked at the other end of the connecting piece 28, and faces the heat dissipation with the air outlet thereof. The air flow passage of the device 20 (not shown). Thereby, the airflow generated by the air blowing device 35 is freely flowing in the air flow passage (not shown) of the heat sink 20, thereby assisting in eliminating heat energy in the airflow passage (not shown) to improve heat dissipation. The effect of efficiency.

In addition, the air blowing device 35 can also be directly locked to the connecting portion to avoid the arrangement of the connecting piece 28, and the two ends of the dome-shaped support frame (not shown) can be locked on the side wall of the heat sink 20 (Fig. Not shown).

From the above, it is known that the present invention truly conforms to "industrial availability," "novelty," and "progressiveness", and submits an invention patent application in accordance with the law, praying for review and early granting of a patent, and it is truly sensible.