TWI385341B - Light source assembly - Google Patents

Description

Light source module

The present invention relates to a light emitting device, and more particularly to a light source module.

Light-emitting diodes (LEDs) have been widely used in communication products and consumer electronic products in recent years due to their small size, power saving, fast response time and long life.

In a light source module using a light-emitting diode, the light-emitting diode system is fixed on the circuit board by surface bonding technology, wherein the lead pins of the light-emitting diode are electrically connected to the circuit board through solder. However, when the light-emitting diode and the circuit board pass through the reflow furnace, the light-emitting diode may be damaged, resulting in a decrease in luminous efficiency of the light-emitting diode or being unusable, which will reduce the production yield of the light source module. In addition, when the light emitting diode is damaged, it is more difficult and time consuming to replace the new light emitting diode.

The invention provides a light source module to improve production yield.

To achieve the above advantages, the present invention provides a light source module including at least one light source and a circuit board. The point light source includes a light emitting portion, a first guiding pin and a second guiding pin. The first guiding pin and the second guiding pin are electrically connected to the light emitting portion, and each has a first sliding portion. The circuit board has at least one connection unit adapted to be electrically connected to the point source. The number of connected units corresponds to the number of point sources. The connecting unit includes two second sliding portions that are shaped to cooperate with the first sliding portion. The point light source is electrically connected to the circuit board through a combination of the first sliding portion and the second sliding portion.

In an embodiment of the invention, the first guiding pin and the second guiding pin are identical in structure, and the first guiding pin and the second guiding leg respectively comprise a base connecting the engaging portions. The light emitting portion has opposite light emitting surfaces and a back surface, and the back surface is connected to the base portions of the first guiding pin and the second guiding pin.

In an embodiment of the invention, the first sliding portions are respectively a convex rail, and the second sliding portions respectively have a concave rail.

In an embodiment of the invention, each of the concave rails has an opposite end and a bottom end, and the bottom end is provided with a stop.

In an embodiment of the invention, the first sliding portions are respectively convex rails, and the second sliding portions respectively have a concave rail.

In an embodiment of the invention, each of the concave rails has opposite end and bottom ends, and the bottom end is provided with a stopper.

In an embodiment of the invention, the light source module further includes at least one first heat sink disposed on the circuit board, and the first heat sink contacts the light emitting portion of the point source.

In an embodiment of the invention, the light emitting portion has a light emitting surface, a first surface opposite to the light emitting surface, and a second surface connected between the light emitting surface and the first surface, the first surface facing the circuit board. The second surface is in contact with the first heat sink. In addition, the first heat sink may extend further between the first surface and the circuit board and be in contact with the first surface.

In an embodiment of the invention, the light emitting portion has a light emitting surface, a first surface opposite to the light emitting surface, and a second surface connected between the light emitting surface and the first surface. The first surface is in contact with the first heat sink and the second surface is facing the circuit board.

In an embodiment of the invention, the light source module further includes at least one second heat sink disposed on the light emitting portion, and the light emitting portion is in contact with the first heat sink through the second heat sink.

In an embodiment of the invention, the first heat dissipating member is provided with a first engaging portion, and the second heat dissipating member is provided with a second engaging portion that cooperates with the first engaging portion, and the first engaging portion The portion is engaged with the second engaging portion.

In an embodiment of the invention, the first guiding pin and the second guiding leg are disposed on opposite sides of the light emitting portion.

In an embodiment of the invention, the point source is a light emitting diode or a laser.

In an embodiment of the invention, the number of the at least one light source and the at least one connecting unit is plural, and the point light sources and the connecting units are arranged in a straight line.

In the present invention, since the first guide pin and the second guide pin of the point light source respectively have a first sliding portion, and the connecting unit includes two second sliding portions that are shaped to cooperate with the first sliding portions, the point The light source is electrically connected to the circuit board through a combination of the first sliding portion and the second sliding portion. In this way, the point light source is not required to be fixed on the circuit board by the surface bonding technology, so that the point light source can be prevented from being damaged, thereby improving the production yield of the light source module of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

1 is a perspective view of a light source module according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the light source module shown in FIG. 1. Referring to FIG. 1 and FIG. 2, the light source module 100 of the present embodiment includes at least one light source 110 and a circuit board 120. In FIG. 1, a point light source 110 is taken as an example. The point source 110 can be a light emitting diode or a laser, but is not limited thereto. The point light source 110 includes a light emitting portion 112, a first lead leg 114, and a second lead pin 116. The first lead leg 114 and the second lead leg 116 are electrically connected to the light emitting portion 112 and have first sliding portions 115 and 117 respectively. The circuit board 120 has at least one connection unit 122 adapted to be electrically connected to the point light source 110, wherein the number of the connection units 122 corresponds to the number of the point light sources 110. The connecting unit 122 includes two second sliding portions 124, 125 that are shaped to cooperate with the first sliding portions 115, 117. The point light source 110 passes through the first sliding portion 115, The 117 is electrically connected to the circuit board 120 in combination with the second sliding portions 124 and 125.

The first guiding leg 114 and the second guiding pin 116 are respectively disposed on opposite sides of the light emitting portion 112. The first sliding portions 115, 117 are, for example, convex rails, respectively, and the second sliding portions 124, 125 have, for example, concave rails 126, respectively. Each of the concave rails 126 is formed between each of the second sliding portions 124 and 125 and the circuit board 120, and the concave rails 126 of the second sliding portions 124 and 125 are opposite to each other. Each of the recessed rails 126 has opposite entrance and exit ends 126a and 126b, and the bottom end 126b is provided with a stop portion 126c, for example. The first sliding portions 115, 117 can slide into the concave rail 126 from the corresponding access end 126a along the direction A until they abut against the stop portion 126c. As such, the point light source 110 can be fixed to the circuit board 120 through the combination of the first sliding portions 115, 117 and the second sliding portions 124, 125. In addition, the second sliding portions 124 and 125 are made of a conductive metal, so that the point light source 110 can be electrically connected to the circuit board 120 through the second sliding portions 124 and 125 .

In the light source module 100 of the present embodiment, since the point light source 110 is fixed to the circuit board 120 by means of sliding connection, there is an advantage that assembly is easy. Moreover, when the assembly is poor and the rework or the point source 110 is damaged and needs to be updated, the rework or update step is also easier. In addition, since the point light source 110 is not fixed on the circuit board 120 by using the surface bonding technology, the point light source 110 can be prevented from being damaged in the bonding process, thereby improving the production yield of the light source module 100 of the embodiment. .

It should be noted that although the first sliding portions 115, 117 of the embodiment are convex rails, and the second sliding portions 124, 125 have concave rails that cooperate with the convex rails, the concave rails and the convex rails are interchangeable. That is, the first sliding portions 115, 117 may have a concave rail, and the bottom end of the concave rail may also be provided with a stopping portion, and the second sliding portion 124, 125 may be a convex rail that cooperates with the concave rail.

In addition, although the present embodiment is a point light source 110 and a connecting unit 122 as an example, in another embodiment, as shown in the light source module 100' of FIG. 3, the number of the point light source 110 and the connecting unit 122 may be There are a plurality of, and the point light sources 110 and the connection units 122 are, for example, arranged in a straight line.

In addition, the form of the concave rail 126 of the second sliding portion 124, 125 is only used as an example, and the present invention does not limit the form of the concave rail. The following is another embodiment of the concave rail, but it is not used. The invention is defined.

4 is an exploded perspective view of a light source module according to another embodiment of the present invention. Referring to FIG. 4 , the light source module 200 of the present embodiment is similar to the light source module 100 described above, except that the second sliding portions 224 and 225 of the embodiment are respectively hollow rectangular bodies having concave rails. 226.

FIG. 5 is a perspective view of a light source module according to another embodiment of the present invention, and FIG. 6 is an exploded perspective view of the light source module shown in FIG. 5. Referring to FIG. 5 and FIG. 6 , the light source module 300 of the present embodiment is similar to the light source module 100 described above, except that the light source module 300 further includes at least one first heat sink 330 . In FIG. 5, a first heat sink 330 is taken as an example, but the embodiment does not limit the number of the first heat sinks 330. For example, the first heat sink 330 shown in FIG. 5 can also be replaced with a plurality of heat sinks having a smaller size. The first heat sink 330 is disposed on the circuit board 320 , and the first heat sink 330 contacts the light emitting portion 312 of the point light source 310 .

In more detail, the point light source 310 is, for example, a top-emitting type point light source, and the light-emitting portion 312 has, for example, a light-emitting surface 312a, a first surface 312b opposite to the light-emitting surface 312a, and a connection between the light-emitting surface 312a and the first surface 312b. Second surface 312c. The first surface 312b faces the circuit board 320, and the second surface 312c contacts the first heat sink 330 to transfer the heat generated by the light emitting portion 312 to the first heat sink 330 to achieve the heat dissipation effect.

In the present embodiment, the second surface 312c contacts the first heat sink 330 through the second heat sink 340, for example. In other words, the light source module 300 further includes at least one second heat sink 340 disposed on the second surface 312c of the light emitting portion 312, and the generated heat generated by the light emitting portion 312 is transmitted to the first through the second heat sink 340. Heat sink 330. In FIG. 5, a second heat sink 340 is taken as an example, but the embodiment does not limit the number of the second heat sinks 340. For example, the second heat sink 340 shown in FIG. 5 can also be replaced with a plurality of heat sinks having a smaller size.

In another embodiment, as shown in the light source module 300' shown in FIG. 7, the first heat sink 330' and the second heat sink 340' can be engaged with each other. That is, the first heat dissipating member 330' is provided with, for example, a first engaging portion 332, and the second heat dissipating member 340' is provided with, for example, a second engaging portion 342 that cooperates with the first engaging portion 332. For example, the first engaging portion 332 is, for example, a groove, and the second engaging portion 342 is, for example, a bump that matches the shape of the groove. By engaging the first engaging portion 332 with the second engaging portion 342, the first heat sink 330' and the second heat sink 340' can be brought into closer contact to enhance the heat dissipation effect.

FIG. 8 is an exploded perspective view of a light source module according to another embodiment of the present invention. Referring to FIG. 8 , the light source module 400 of the present embodiment is similar to the light source module 300 described above, except that the first heat sink 430 of the light source module 400 extends to the first surface 412 b of the light emitting portion 412 and the circuit board. Between 420. That is, the first heat dissipating member 430 has an extending portion 436 for contacting the first surface 412b of the light emitting portion 412, so that the heat generated by the light emitting portion 412 can be further transmitted to the first surface 412b. A heat sink 430 improves heat dissipation efficiency.

FIG. 9 is a perspective view of a light source module according to another embodiment of the present invention. FIG. 10 is an exploded perspective view of the light source module shown in FIG. 9. Referring to FIG. 9 and FIG. 10 , the light source module 500 of the present embodiment is similar to the light source module 300 described above, except that the point light source 510 of the light source module 500 is, for example, a side-lighting point light source. The light emitting surface 512a of the light emitting portion 512 of the point light source 510 is adjacent to the circuit board 520, the second heat sink 540 is fixed on the first surface 512b, and the first surface 512b is in contact with the first heat sink 530 through the second heat sink 540. The second surface 512c faces the circuit board 520. In addition, the second heat sink 540 of the embodiment may be omitted, that is, the first surface 512b may directly contact the first heat sink 530.

In summary, the light source module of the present invention has at least the following advantages:

In the light source module of the present invention, since the point light source can be electrically connected to the circuit board through the combination of the first sliding portion and the second sliding portion, the point light source is not required to be fixed to the circuit by surface bonding technology. On the board. In this way, the point light source can be prevented from being damaged, thereby improving the production yield.

2. Since the point light source is electrically connected to the circuit board by the combination of the first sliding portion and the second sliding portion, the assembly is easy, and it is also easy to rework or replace the point source.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

100, 100', 200, 300, 300', 400, 500. . . Light source module

110, 310, 510. . . point Light

112, 312, 412, 512. . . Light department

114. . . First lead

115, 117. . . First sliding part

116. . . Second lead

120, 420, 520. . . Circuit board

122. . . Connection unit

124, 125, 224, 225. . . Second sliding part

126, 226. . . Concave rail

126a. . . Access

126b. . . Bottom end

126c. . . Stop

A. . . direction

312a, 512a. . . Luminous surface

312b, 412b, 512b. . . First surface

312c, 512c. . . Second surface

330, 330', 430, 530. . . First heat sink

332. . . First engagement

340, 340', 540. . . Second heat sink

342. . . Second engagement

436. . . Extension

FIG. 1 is a perspective view of a light source module according to an embodiment of the invention.

2 is an exploded perspective view of the light source module shown in FIG. 1.

3 is a perspective view of a light source module according to another embodiment of the present invention.

4 is an exploded perspective view of a light source module according to another embodiment of the present invention.

FIG. 5 is a perspective view of a light source module according to another embodiment of the present invention.

FIG. 6 is an exploded perspective view of the light source module shown in FIG. 5.

FIG. 7 is a side cross-sectional view of a light source module according to another embodiment of the present invention.

FIG. 8 is an exploded perspective view of a light source module according to another embodiment of the present invention.

FIG. 9 is a perspective view of a light source module according to another embodiment of the present invention.

FIG. 10 is an exploded perspective view of the light source module shown in FIG. 9.

100. . . Light source module

110. . . point Light

112. . . Light department

114. . . First lead

115, 117. . . First sliding part

116. . . Second lead

120. . . Circuit board

124, 125. . . Second sliding part

126. . . Concave rail

126a. . . Access

126b. . . Bottom end

126c. . . Stop

A. . . direction

Claims (14)

A light source module includes: at least one light source, the light source includes: a light emitting portion; a first lead electrically connected to the light emitting portion; and a second lead electrically connected to the light emitting portion, the first a lead leg and the second lead leg respectively have a first sliding portion; and a circuit board having at least one connecting unit adapted to be electrically connected to the point light source, the connecting unit including a shape and the first sliding The two second sliding portions are matched with each other, and the point light source is electrically connected to the circuit board through the combination of the first sliding portions and the second sliding portions. The light source module of claim 1, wherein the first sliding portions are respectively a convex rail, and the second sliding portions respectively have a concave rail. The light source module of claim 2, wherein each of the concave rails has an opposite end and a bottom end, and the bottom end is provided with a stop. The light source module of claim 1, wherein the second sliding portions are respectively a convex rail, and the first sliding portions respectively have a concave rail. The light source module of claim 4, wherein each of the concave rails has an opposite end and a bottom end, and the bottom end is provided with a stop. The light source module of claim 1, further comprising at least one first heat sink disposed on the circuit board, wherein the first heat sink contacts the light emitting portion of the point source. The light source module of claim 6, wherein the light emitting portion has a light emitting surface, a first surface opposite the light emitting surface, and a second surface connected between the light emitting surface and the first surface The surface, the first surface faces the circuit board, and the second surface is in contact with the first heat sink. The light source module of claim 7, wherein the first heat sink extends further between the first surface and the circuit board and is in contact with the first surface. The light source module of claim 6, wherein the light emitting portion has a light emitting surface, a first surface opposite the light emitting surface, and a second surface connected between the light emitting surface and the first surface The surface, the first surface is in contact with the first heat sink, and the second surface is facing the circuit board. The light source module of claim 6, further comprising at least one second heat dissipating member disposed on the light emitting portion, wherein the light emitting portion contacts the first heat dissipating member through the second heat dissipating member. The light source module of claim 10, wherein the first heat sink is provided with a first engaging portion, and the second heat sink is provided with a second card that cooperates with the first engaging portion. And engaging the first engaging portion with the second engaging portion. The light source module of claim 1, wherein the first guiding pin and the second guiding leg are disposed on opposite sides of the light emitting portion. The light source module of claim 1, wherein the point source is a light emitting diode or a laser. The light source module of claim 1, wherein the number of the at least one light source and the at least one connecting unit is plural, and the point light sources and the connecting units are arranged in a straight line.