TWI484117B - Illuminating device - Google Patents

Description

Lighting device

The present invention relates to a lighting device, and more particularly to a lighting device having a different architecture than that of the conventional lighting device.

In recent years, people have been working on the development of new lighting sources. Because light emitting diodes (LEDs) have the advantages of power saving, durability, and small size, and this is unmatched by traditional lighting sources such as incandescent lamps and fluorescent lamps. As a result, LEDs are recognized as the most valuable "green" lighting in the new century, and will replace incandescent and fluorescent lamps as the leading products in the lighting market.

In detail, the light-emitting diode belongs to a semiconductor element whose material mainly uses a compound of a group III-V chemical element such as gallium phosphide (GaP) or gallium arsenide (GaAs). The light-emitting diode emits excess energy to a specific wavelength range by applying a current to the compound semiconductor and through the combination of electrons and holes. Since the luminescence phenomenon of the illuminating diode is not by heating or discharging, the life of the illuminating diode is as long as 100,000 hours or more, and the photoelectric conversion efficiency thereof is better than that of the conventional illumination source.

1 is a partial perspective view of a conventional illumination device using a light-emitting diode as its light source, and FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. Referring to FIG. 1 and FIG. 2 simultaneously, in a lighting device 100 using a light-emitting diode as a light source, the circuit board 120 disposed in the hollow body 110 of the lighting device 100 may be disposed through the hollow body 110. A pair of hooking portions 112 are defined on the side wall, wherein the hooking portion 112 is located at an open end 110a of the hollow body 110 relatively close to the heat sink (not shown). As can be seen from FIG. 1 and FIG. 2, the hollow body 110 and the circuit board 120 each have a neck portion 114, 122. Therefore, when the circuit board 120 is inserted into the hollow body 110 from the open end 110a having a large diameter, the circuit board 120 is inserted. The neck portion 122 can bear against the neck portion 114 of the hollow body 110, and the hook portion 112 abuts against the circuit board 120, so that the circuit board 120 can be restrained in the hollow body 110.

However, under such an arrangement, limited by the position of the hooking portion 112, the size of the circuit board 120 cannot be effectively increased. In addition, since the hooking portion 112 is located at the open end 110a of the hollow body 110 relatively close to the heat sink (not shown), and the hooking portion 112 is formed by the portion of the side wall of the airborne body 110, the heat is dissipated. When the glue (not shown) is filled in the hollow body 110, the heat-dissipating glue (not shown) easily leaks from the hollowed portion 116.

The present invention provides a lighting device having a different architecture than conventional lighting devices.

The invention provides a lighting device, comprising a hollow body and a circuit board, wherein the hollow body has a first open end, a second open end and a pair of first hooking portions, and the second open end has a larger diameter than the first opening The diameter of the end, and the first hooking portion is disposed at the first open end. The circuit board is disposed in the hollow body and has a pair of second hooking portions, and the first hooking portion and the second hooking portion interfere with each other.

In an embodiment of the illumination device of the present invention, the first open end is a threaded portion.

In an embodiment of the illumination device of the present invention, the first hooking portion is located at both ends of a diameter of the first open end.

In an embodiment of the lighting device of the present invention, the hooking direction of the first hooking portion faces the circuit board.

In an embodiment of the illumination device of the present invention, the hooking direction of the second hooking portion faces the hollow body and is located outside the hollow body.

In an embodiment of the lighting device of the present invention, the first hooking portion is formed as a portion of a side wall of the airborne body.

In an embodiment of the illumination device of the present invention, the hollow body has a first neck portion, and the circuit board has a second neck portion, and the second neck portion abuts against the first neck portion.

In an embodiment of the illumination device of the present invention, the hollow body further has a pair of rails located in the hollow body and disposed adjacent to the first hooking portion, and the circuit board is inserted into the rail.

In an embodiment of the lighting device of the present invention, a heat sink disposed at the second open end is further included.

In an embodiment of the lighting device of the present invention, a lampshade coupled to the heat sink is further included, wherein the heat sink is located between the lamp cover and the hollow body.

In an embodiment of the illumination device of the present invention, a threaded base that is coupled to the first open end of the hollow body is further included.

In an embodiment of the illumination device of the present invention, a heat dissipating gel filled in the hollow body is further included.

Based on the above, in the lighting device of the present invention, the hooking portion located in the hollow body is disposed at one end of the hollow body and the threaded base, and thus the structure is different from that of the conventional lighting device. Through such an arrangement, the internal space of the hollow body can be increased, thereby increasing the size of the circuit board. On the other hand, when the heat-dissipating gel is filled in the hollow body, since the hooking portion is in the threaded portion where the hollow body and the screw base are joined, the threaded portion is covered by the threaded base, so that the glue leakage can be prevented.

The above described features and advantages of the present invention will be more apparent from the following description.

3 is a cross-sectional view of a lighting device in accordance with an embodiment of the present invention, and FIG. 4 is a cross-sectional view of the hollow body of FIG. Referring to FIG. 3 and FIG. 4 simultaneously, the illumination device 200 of the present embodiment includes a hollow body 210 and a circuit board 220. The hollow body 210 has a first open end 210a, a second open end 210b, and a pair of first The hooking portion 212 has a diameter d1 of the second open end 210b that is larger than the diameter d2 of the first open end 210a, and the first hooking portion 212 is disposed at the first open end 210a. The circuit board 220 is disposed in the hollow body 210 and has a pair of second hooking portions 222 , and the first hooking portion 212 and the second hooking portion 222 interfere with each other.

In detail, the first open end 210a is a threaded portion, and the first hooking portion 212 is located at the threaded portion, and the lighting device further includes a threaded base 230 that is coupled to the first open end 210a of the hollow body 210. , wherein the inner diameter (not shown) of the threaded base 230 is slightly larger than the outer diameter of the threaded portion (not drawn The screw portion is screwed into the threaded base 230 and fits tightly, and the hollow body 210 is assembled with the threaded base 230.

In addition, the first hooking portion 212 is located at one end of a diameter (not shown) of the first open end 210a, and the hooking direction of the first hooking portion 212 faces the circuit board 220, that is, toward the inner side of the hollow body 210; The hooking direction of the second hooking portion 222 faces the hollow body 210, that is, the hooking direction of the second hooking portion 222 faces the outer side of the circuit board 220, and when the circuit board 220 is assembled inside the hollow body 210, the second hooking The portion 222 passes through the first open end 210a to be located outside of the hollow body 210. In the present embodiment, the first hooking portion 212 is a portion of the side wall of the airborne body 210 from the edge of the first open end 210a of the hollow body 210 along the axial direction of the hollow body 210 toward the second open end 210b. form. In other words, the first hooking portion 212 is a bullet hook.

In the above, the hollow body 210 has a first necking portion 214, and the circuit board 220 has a second necking portion 224. When the circuit board 220 is assembled inside the hollow body 210, the second necking portion 224 can be further abutted. Relying on the first neck portion 214. In addition, in order to facilitate the assembly of the circuit board 220 and the hollow body 210, the hollow body 210 further has a pair of rails 216 disposed in the hollow body 210 adjacent to the first hooking portion 212, and the circuit board 220 is inserted into the rails 216. The track 216 can also fix the relative position of the circuit board 220 and the hollow body 210, and prevent the circuit board 220 from rotating in the hollow body 210 with a central axis C of the hollow body 210 as an axis.

When the circuit board 220 is assembled to the hollow body 210, one end of the circuit board 220 having the second hooking portion 222 is directed toward the hollow body 210, and along The axial direction of the hollow body 210 is inserted into the rail 216 of the hollow body 210 from the second open end 210b of the hollow body 210, due to the direction of the hook of the first hooking portion 212 and the direction of the hook of the second hooking portion 222. On the contrary, the first hooking portion 212 of the hollow body 210 and the second hooking portion 222 of the circuit board 220 interfere with each other to be hooked together, thereby restricting the circuit board 220 from being able to move relative to each other along the axial direction of the hollow body 210. . Moreover, the arrangement of the track 216 limits the rotation of the circuit board 220 relative to the hollow body 210, and the second necked portion 224 of the circuit board 220 can more abut against the first necked portion 214 of the hollow body 210.

By arranging the first hooking portion 212 at the first open end 210a, the space at the second open end 210b is given out, thus increasing the optional size of the circuit board 220. In brief, the width or length of the circuit board 220 relative to the second open end 210b can be increased, and the configuration of the electronic components disposed on the circuit board 220 is also more adjusted.

In addition, the illuminating device 200 further includes a heat dissipating rubber 240 filled in the hollow body 210, wherein the heat dissipating rubber 240 can be filled between the hollow body 210 and the circuit board 220 after the relative positions of the circuit board 220 and the hollow body 210 are fixed. It is used to improve the heat dissipation effect of the electronic components on the circuit board 220. In particular, since the first hooking portion 212 is located at the first open end 210a which is a threaded portion, the threaded base 230 is further assembled to the outside of the first open end 210a by being screwed with the threaded portion. In other words, the threaded base 230 covers the hollow portion 218 of the hollow body 210, so that when the heat-dissipating rubber 240 is filled into the hollow body 210, leakage of the heat-radiating rubber 240 can be prevented.

Incidentally, since the hollow portion 218 of the hollow body 210 is threaded The base 230 is covered, so that the exposed portion of the hollow body 210 does not appear to be broken and presents a complete appearance. Therefore, the hollow body 210 can be directly used as an appearance member, in other words, the outer side of the hollow body 210 is not It needs to be covered with other components.

Fig. 5 is a schematic view showing the assembly of the lighting device. Referring to FIG. 5 , the lighting device further includes a heat sink 250 disposed at the second open end 210 b and a light cover 260 coupled to the heat sink 250 , wherein the heat sink 250 is located between the lamp cover 260 and the hollow body 210 . Of course, the illuminating device 200 may further include at least one light emitting diode (not shown) as a light source, a lens covering the light emitting diode, a heat dissipating pad and the like, and these components are in the field. Personnel can be selected according to the needs of the general knowledge, and is not a technical feature of the present invention, and therefore will not be further explained.

In summary, in the lighting device of the present invention, the hooking portion located in the hollow body is disposed at one end of the hollow body and the threaded base, and thus the structure is different from that of the conventional lighting device. Through such an arrangement, the internal space of the hollow body can be increased, thereby increasing the size of the circuit board and increasing the setting margin of the electronic components on the circuit board.

On the other hand, when the heat-dissipating glue is filled in the hollow body, since the hooking portion is in the threaded portion where the hollow body and the threaded base are engaged, the threaded base covers the threaded portion from the outside, thereby preventing the heat-dissipating glue from being hollowed out Leaking out can not only save material costs, but also allow the assembler to maintain the cleanliness of the hands.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art does not deviate. In the spirit and scope of the present invention, the scope of protection of the present invention is defined by the scope of the appended claims.

100, 200‧‧‧ lighting devices

110, 210‧‧‧ hollow body

110a‧‧‧Open end

112‧‧‧Hooking Department

114, 122‧‧‧ necking

116‧‧‧ hollow part of the hollow body

120, 220‧‧‧ circuit board

210a‧‧‧first open end

210b‧‧‧second open end

212‧‧‧First hooking department

214‧‧‧First necking

216‧‧‧ Track

218‧‧‧ hollow part

222‧‧‧Second hooking department

224‧‧‧Second necking

230‧‧‧Threaded base

240‧‧‧Solution glue

250‧‧‧heatsink

260‧‧‧shade

D1, d2‧‧‧ caliber

C‧‧‧ center axis

FIG. 1 is a partial perspective view of a conventional illumination device using a light-emitting diode as its light source.

Figure 2 is a cross-sectional view taken along line A-A of Figure 1.

3 is a schematic cross-sectional view of a lighting device in accordance with an embodiment of the present invention.

Figure 4 is a cross-sectional view of the hollow body of Figure 3.

Fig. 5 is a schematic view showing the assembly of the lighting device.

200‧‧‧Lighting device

210‧‧‧ hollow body

210a‧‧‧first open end

210b‧‧‧second open end

212‧‧‧First hooking department

214‧‧‧First necking

220‧‧‧Circuit board

222‧‧‧Second hooking department

224‧‧‧Second necking

240‧‧‧Solution glue

D1, d2‧‧‧ caliber

C‧‧‧ center axis

Claims (12)

A lighting device includes: a hollow body having a first open end, a second open end, and a pair of first hooking portions, wherein a diameter of the second open end is greater than a diameter of the first open end, and the pair a hooking portion is disposed at the first open end; and a circuit board disposed in the hollow body, having a pair of second hooking portions, and the pair of first hooking portions and the pair of second hooking portions are mutually put one's oar in. The lighting device of claim 1, wherein the first open end is a threaded portion. The lighting device of claim 1, wherein the pair of first hooking portions are located at both ends of a diameter of the first open end. The lighting device of claim 1, wherein the pair of first hooking portions are oriented toward the circuit board. The illuminating device of claim 4, wherein the pair of hooking portions of the pair of hooking portions face the hollow body and are located outside the hollow body. The lighting device of claim 1, wherein the pair of first hooking portions are formed by hollowing out a portion of a side wall of the hollow body. The illuminating device of claim 1, wherein the hollow body has a first necking portion, and the circuit board has a second necking portion, and the second necking portion abuts the first Necking. The lighting device of claim 1, wherein the hollow body further has a pair of rails located in the hollow body and disposed adjacent to the pair of first hooking portions, and the circuit board is inserted into the pair of rails . The lighting device of claim 1, further comprising a heat sink disposed at the second open end. The illuminating device of claim 9, further comprising a lamp cover coupled to the heat sink, wherein the heat sink is located between the lamp cover and the hollow body. The lighting device of claim 1, further comprising a threaded base joined to the first open end of the hollow body. The lighting device of claim 1, further comprising a heat dissipating glue filled in the hollow body.