TWI407205B - Light source assembly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light source assembly endowed with superb positioning reliability with warping back or peeling off of a light bar duly avoided. <P>SOLUTION: The light source assembly includes a back plate, a first pressing piece, a second pressing piece, and a light bar. The back plate has a bottom part and at least one side part, with the bottom part and the side part at a given angle, and the side part has an oblong external form and is equipped with a first end and a second end opposed to each other in a longer axis direction of the side part. The first pressing piece is formed at the first end of the side part of the back plate, and the first pressing piece and the side part make up a first housing space, while, the second pressing piece is formed at the second end of the side part of the back plate, and the second pressing piece and the side part make up a second housing space. The light bar is affixed to the side part of the back plate, the first end of the light bar is placed inside the first housing space, and the second end opposed to the first end of the light bar is placed inside the second housing space. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

Light source assembly

The invention relates to a light source assembly.

In terms of technology and cost, the backlight module is gradually improved in the way of fixing the light bar. The early light strips are fixed to the back plate by means of thermal pads and screwing, and are usually fixed to the back plate by adhesive attachment. As shown in the light source assembly 100 of FIG. 1, a light bar 104 is adhered to the back plate 102 by a thermal tape 106. However, the heat-conductive double-sided tape 106 is liable to cause peeling or peeling, and in particular, the head and the tail ends of the light bar 104 are more prominently adhered. When one end of the thermal double-sided tape 106 between the light bar 104 and the back plate 102 is peeled off, the positioning reliability between the light bar 104 and the back plate 102 is reduced. If the deterioration is further caused, the light bar 104 is gradually degummed. The heat generated by the light source is concentrated and is not easily dissipated, resulting in a decrease in optical efficiency and deteriorating the performance, reliability and quality of a backlight module as a whole. In addition, Taiwan Patent Publication No. 200811522, 201007276, 200928500 and U.S. Patent Publication No. 20080186425 disclose the fixing manner of the light source of the backlight module.

The invention provides a light source assembly which can avoid warping or peeling of the light bar and has good positioning reliability.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein. To achieve one or a part or all of the above or other purposes, an embodiment of the present invention provides a light source assembly including a back plate, a first pressing piece, a second pressing piece, and a light bar. The back plate has a bottom portion and at least one side portion. The bottom portion is at an angle to the side portion. The side portion has an elongated shape and has a first end and a second end in a long axis direction of the side portion. The first pressing piece is formed on the first end of the side portion of the back plate and defines a first accommodating space with the side portion, and the second pressing piece is formed on the second end of the side portion of the back plate and is defined with the side portion A second housing space is available. The light bar is attached to the side of the back plate, and a first end of the light bar is disposed in the first receiving space and is disposed in the second receiving space with a second end of the first end of the light bar.

In an embodiment, the first end of the light bar abuts or engages the first pressing piece, and the second end of the light bar abuts or engages the second pressing piece.

In one embodiment, one of the first tablet and the second tablet includes a base and a bent portion. The base joins the side of the backing plate, the bent portion connects the base and faces the side of the backing plate, and the bent portion has a spacing from the side of the backing plate.

In one embodiment, a surface of the bent portion facing the side of the back plate is a plane or a curved surface, and one of the first pressing piece and the second pressing piece has an L-shaped or S-shaped cross-sectional shape. .

In one embodiment, the light source assembly further includes a heat conductive double-sided tape disposed between the back plate and the light bar, and the first pressure piece and the second pressure piece are integrally formed with the back plate.

Another embodiment of the present invention provides a light source assembly including a back plate, a heat sink, a first pressing piece, a second pressing piece, and a light bar. The back plate is disposed on a bottom side of a light guide plate, and the heat sink is disposed at a position adjacent to a light incident surface of the light guide plate. The heat sink has a bottom portion and a side portion, and the bottom portion is connected to one side of the back plate and is sandwiched with the side portion. At one angle, the side portion has a longitudinally shaped shape and has a first end and a second end in a longitudinal direction of the side portion. The first pressing piece is formed on the first end of the side portion of the heat sink and defines a first accommodating space with the side portion. The second pressing piece is formed on the second end of the side portion of the heat sink and defines a second portion with the side portion. Accommodate space. The light bar is attached to the side of the heat sink. A first end of the light bar is disposed in the first receiving space, and a second end of the opposite first end of the light bar is disposed in the second receiving space.

In one embodiment, the heat sink has an L-shaped or a T-shaped cross-sectional shape.

In one embodiment, the light source assembly further includes a heat conductive double-sided tape disposed between the heat sink and the light bar, and the first pressure piece and the second pressure piece are integrally formed with the heat sink.

Another embodiment of the present invention provides a light source assembly including a back plate, at least two light bars, a first pressing piece, a second pressing piece, and a third pressing piece. The back plate has a bottom portion and at least one side portion. The bottom portion is at an angle to the side portion. The side portion has an elongated shape and has a first end and a second end in a long axis direction of the side portion. At least two light bars are attached to the side of the backboard, and two adjacent light bars are connected to each other and form a joint. A first sheet is formed on the first end of the side and abuts or snaps the first end of the connected light strip. A second tablet is formed on the second end of the side and abuts or snaps the second end of the connected light strip. The third pressing piece is formed on the side portion and located between the first pressing piece and the second pressing piece, and the third pressing piece abuts or engages the joint.

Another embodiment of the present invention provides a light source assembly including a back plate, a heat sink, at least two light bars, a first pressure piece, a second pressure piece, and a third pressure piece. The back plate is disposed on a bottom side of a light guide plate, and the heat sink is disposed at a position adjacent to a light incident surface of the light guide plate. The heat sink has a bottom portion and a side portion, and the bottom portion is connected to one side of the back plate and is sandwiched with the side portion. At one angle, the side portion has a longitudinally shaped shape and has a first end and a second end in a longitudinal direction of the side portion. The light bar is attached to the side of the heat sink, and two adjacent light bars are connected to each other and form a joint. a first pressing piece is formed on the first end of the side portion and abuts or engages the first end of the connected light bar, and the second pressing piece is formed on the second end of the side portion and abuts or engages the connected lamp The second end of the strip, the third pressing piece is formed on the side portion and located between the first pressing piece and the second pressing piece, and the third pressing piece abuts or engages the joint.

Another embodiment of the present invention provides a light source assembly including a back plate, at least two light bars, a first pressing piece, a second pressing piece, and a fastening component. The back plate has a bottom portion and at least one side portion, the bottom portion is at an angle to the side portion, the bottom portion has at least one buckle hole, the side portion has a longitudinal shape and has a first end in a long axis direction of the side portion. And a second end. At least two light bars are attached to the side of the backboard, and two adjacent light strips are connected to each other and form a joint, and the buckle holes are formed adjacent to the joint. A first pressing piece is formed on the first end of the side portion and abuts or engages a first end of the connected light strips. A second pressing piece is formed on the second end of the side portion and abuts or engages a second end of the connected light strips. One end of the fastener abuts against the joint and the other end is embedded in the buckle hole.

Another embodiment of the present invention provides a light source assembly including a back plate, a heat sink, at least two light bars, a first pressure piece, a second pressure piece, and a buckle. The back plate is disposed on a bottom side of a light guide plate. The heat sink is disposed at a position adjacent to a light incident surface of the light guide plate. The heat sink has a bottom portion and a side portion. The bottom portion has at least one button hole, and the bottom portion is connected to one side of the back plate and is at an angle to the side portion. The utility model has a longitudinal shape and a first end and a second end opposite to each other in a longitudinal direction of the side portion. At least two light bars are attached to the side of the heat sink, and two adjacent light bars are connected to each other and form a joint, and the button holes are formed adjacent to the joint. A first pressing piece is formed on the first end of the side portion and abuts or engages a first end of the connected light strips. A second pressing piece is formed on the second end of the side portion and abuts or engages a second end of the connected light strips. One end of the fastener abuts against the joint and the other end is embedded in the buckle hole.

In summary, the light source assembly of the embodiment of the present invention has at least one of the following advantages:

According to the design of the above embodiment, the pressing sheet is formed on the back plate or the heat sink, and the light bar can be firmly restrained on the back plate or the heat sink by the abutting or engaging effect of the pressing piece, thereby effectively avoiding the light bar The warpage, peeling or peeling phenomenon on the back sheet or the heat sink can improve the quality and reliability of the light source assembly and the life and luminous efficiency of the light emitting element. In addition, the component construction and assembly work of the above design are relatively simple and rapid, so that the positioning enhancement effect can be additionally provided without causing an increase in cost, and the tablet can be integrally formed with the back plate or the heat sink to further simplify the process. In addition, the bottom portion and the side portion of the back plate or the heat dissipating member may form an T-shaped cross-sectional shape or an L-shaped cross-sectional shape at an angle to each other, because the light bar may be attached to the T-shaped or L-shaped type according to actual needs. The horizontal wall surface or the vertical wall surface of the cross section allows the light-emitting elements of different light-emitting directions to be applied.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein. The above and other objects, features, and advantages of the invention will be apparent from

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the embodiments of the invention. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

2 is a schematic view of a light source assembly according to an embodiment of the present invention, and FIGS. 3 and 4 are partial enlarged views M and N of FIG. Referring to FIG. 2 to FIG. 4 , the light source assembly 10 includes a back plate 12 and a light bar 14 . The back plate 12 includes a bottom portion 12 a and at least one side portion 12 b . The back plate bottom portion 12 a is disposed on a bottom side of a light guide plate 18 . The back side portion 12b is at an angle to the back plate bottom portion 12a. In the present embodiment, the back plate side portion 12b and the back plate bottom portion 12a are, for example, perpendicular to each other, but the present invention is not limited to this embodiment. The light bar 14 is disposed adjacent to a light incident surface 18a of the light guide plate 18 and attached to the back plate side portion 12b. For example, the light bar 14 can be adhered to the thermal tape by a thermal tape. On the back side portion 12b. The back side portion 12b has, for example, an elongated shape, and has a first end P and a second end Q in a long axis direction of the back side portion 12b. A first pressing piece 22 is formed on the first end P of the back plate side portion 12b, and a second pressing piece 24 is formed on the second end Q of the backing plate side portion 12b. In the embodiment, the first pressing piece 22 includes a base portion 22a and a bent portion 22b. The base portion 22a is connected to the back plate side portion 12b. The bent portion 22b is connected with the base portion 22a and faces the back plate side portion 12b, and is bent. The portion 22b has a spacing from the backing plate side portion 12b. Similarly, the second pressing piece 24 includes a base portion 24a and a bent portion 24b. The base portion 24a is coupled to the back plate side portion 12b. The bent portion 24b is coupled to the base portion 24a and faces the backing plate side portion 12b, and the bent portion 24b is The back side portion 12b has a pitch. Therefore, the bent portions 22b, 24b respectively define an accommodation space with the back plate side portion 12b. When the opposite ends of the light bar 14 are respectively placed in the accommodating spaces formed by the first pressing piece 22 and the second pressing piece 24 and the back plate side portion 12b, the bending of the first pressing piece 22 and the second pressing piece 24 is performed. The distance between the folded portions 22b and 24b and the back side portion 12b can be adjusted according to actual conditions. Both ends of the light bar 14 can respectively abut or engage the first pressing piece 22 and the second pressing piece 24 to obtain good positioning. effect. In detail, when the distance between the bent portions 22b and 24b of the first pressing piece 22 and the second pressing piece 24 and the back plate side portion 12b is large, both ends of the light bar 14 can be respectively placed on the first pressing piece 22 And the second pressing piece 24, the light bar is limited to the back plate; when the distance between the bent portions 22b, 24b of the first pressing piece 22 and the second pressing piece 24 and the back plate side portion 12b is small, the light bar The two ends of the 14 can be relatively tightly engaged in the first pressing piece 22 and the second pressing piece 24, so that the bending portions 22b, 24b can further clamp the two ends of the light bar 14. Therefore, even if the heat-conductive double-sided tape 16 between the light bar 14 and the back plate 12 is deteriorated or peeled off, the light bar 14 can be restricted to the back plate 12 by the first pressing piece 22 and the second pressing piece 24.

5 clearly shows the form in which the first pressing piece 22 and the second pressing piece 24 are formed on the backing plate 12. The first pressing piece 22 and the second pressing piece 24 can be integrally formed with the backing plate 12, for example, or can be a separate member. It can be connected to the backboard 12. Furthermore, in the above embodiment, the surface of the sheet bending portion 22b, 24b facing the side portion 12b of the backing plate is a flat surface, so that the first pressing piece 22 or the second pressing piece 24 has an L-shaped cross section as a whole. The outer shape of the first pressing piece 22 or the second pressing piece 24 is not limited, and only the effect of the limiting light bar 14 can be achieved. In another embodiment, as shown in FIG. 6, a surface of the sheet bending portion 22b, 24b facing the side portion 12b of the backing plate is a curved surface, so that the first pressing piece 22 or the second pressing piece 24 has a whole S. The cross-sectional shape of the font can also obtain the effect of the limit light bar 14. In addition, the S-shaped tablet can further improve the convenience during assembly. When the user wants to put the light bar into the back plate, the S-shaped pressing piece can be slightly opened, and then the light bar is placed. Backboard.

FIG. 7 is a schematic diagram of a light source assembly according to another embodiment of the present invention. Here, in order to clearly show the connection state of the back plate 32 and the heat sink 36, the light guide plate 38 is indicated by a broken line. As shown in FIG. 7, the light source assembly 30 includes a back plate 32, a light bar 34, and a heat sink 36. The back plate 32 is disposed on a bottom side of the light guide plate 38. The heat sink 36 is disposed at a position adjacent to a light incident surface 38a of the light guide plate 38 and connects to a side of the bottom plane 32a of the back plate 32. The heat sink 36 has a bottom portion 36a and a side portion 36b. The heat sink center portion 36a has an angle with the heat sink side portion 36b. The heat sink side portion 36b has a longitudinal shape and has a longitudinal direction in the longitudinal direction of the heat sink side portion 36b. A first end U and a second end V. The first pressing piece 42 is formed on the first end U of the fin side portion 36b and defines a first accommodating space with the fin side portion 36b, and the second pressing piece 44 is formed on the second end V of the fin side portion 36b and A second accommodating space is defined with the fin side portion 36b. The light bar 34 is attached to the side of the fin side portion 36b facing the light guide plate 38. The two ends of the light bar 34 respectively abut or engage the first pressing piece 42 and the second pressing piece 44, so that a good positioning effect can be obtained. . In the embodiment, the light bar 34 is combined with the heat sink 36 and then connected to the back plate 32, which can effectively improve the structural strength and heat dissipation effect, and is easy to modularize. Similarly, a heat-conductive double-sided tape 46 can be disposed between the heat sink 36 and the light bar 34, and the first pressure piece 42 and the second pressure piece 44 can be integrally formed with the heat sink 36. Of course, the outer shape of the heat sink 36 is not limited, and may have, for example, an L-shape (as shown in FIG. 8) or a T-shape (as shown in FIG. 9).

FIG. 10 is a schematic diagram of a light source assembly according to another embodiment of the present invention. In the present embodiment, the light source assembly 50 includes two light bars 54a, 54b, and two adjacent light bars 54a, 54b are connected to each other and form a contact W. The back plate 52 has a back plate bottom portion 52a and a back plate side portion 52b. The back plate bottom portion 52a and the back plate side portion 52b are at an angle. The back plate side portion 52b has a longitudinal shape and is on the back plate side portion 52b. The first axis S and the second end T are opposite to each other in the long axis direction. A first pressing piece 62 is formed on the first end S of the back plate side portion 52b, and a second pressing piece 64 is formed on the second end T of the backing plate side portion 52b. A third pressing piece 66 is formed between the first pressing piece 62 and the second pressing piece 66 on the back plate side portion 52b, and the third pressing piece 66 is formed at a position corresponding to the contact point of the two light bars 54a, 54b. . Therefore, the first pressing piece 62, the second pressing piece 64, and the third pressing piece 66 can respectively abut or engage the left end, the right end, and the intermediate indirect point W of the two connected light bars 54a, 54b, so that a plurality of connected The light bars 54a, 54b achieve a good positioning effect. Of course, the two light strips 54a, 54b of the above embodiment are for illustrative purposes only. The number of the light strips of the light source assembly 50 is not limited at all, and only a pressure is required at the position corresponding to each joint on the back side portion 52b. Tablets for good positioning. Moreover, the positioning manner of the plurality of light bars 54a, 54b can also be applied to a heat sink structure. As shown in FIG. 11, the light source assembly 70 includes two light bars 54a, 54b attached to the side portion 76b of a heat sink 76, and the bottom portion 76a of the heat sink 76 is coupled to the back plate 52. On one side of the bottom. The first pressing piece 62, the second pressing piece 64, and the third pressing piece 66 are respectively formed at the left end and the right end of the side portion 76b of the heat sink 76 and at the position corresponding to the center corresponding joint W, and a good positioning effect can also be obtained. Moreover, as shown in the light source assembly 80 of FIG. 12, a snap member 82 can also be used to abut the intermediate indirect point W of the two connected light strips 54a, 54b, that is, the first pressing piece 62 and the second pressing piece 64. And a fastening member 82 can respectively abut or engage the left end, the right end and the intermediate indirect point W of the two connected light strips 54a, 54b, so that a plurality of connected light strips 54a, 54b obtain a good positioning effect. FIG. 13 is a schematic view of a snap fastener according to an embodiment of the present invention, and FIG. 14 is a schematic view showing a manner of engaging and snapping a snap fastener and a buckle hole. Referring to FIG. 13 and FIG. 14 simultaneously, in an embodiment, the bottom of the latching member 82 has a T-shaped cross-section of the latch 821. When the latch 821 of the latching member 82 is snapped into the bottom of the backboard 12a. Or after a buttonhole 84 of the bottom portion 76a of the heat sink, the latching member 82 can be fixed to the bottom portion 12a of the back plate or the bottom portion 76a of the heat sink and abut against the intermediate point W of the connected light strips 54a, 54b. Of course, the shape of the snap member 82 and the matching shape with the button hole 84 are not limited, as long as the engagement effect can be achieved and the limit light bar is achieved.

In summary, the light source assembly of the embodiment of the present invention has at least one of the following advantages:

According to the design of the above embodiment, the pressing sheet is formed on the back plate or the heat sink, and the light bar can be firmly restrained on the back plate or the heat sink by the abutting or engaging effect of the pressing piece, thereby effectively avoiding the light bar The warpage, peeling or peeling phenomenon on the back sheet or the heat sink can improve the quality and reliability of the light source assembly and the life and luminous efficiency of the light emitting element. In addition, the component construction and assembly work of the above design are relatively simple and rapid, so that the positioning enhancement effect can be additionally provided without causing an increase in cost, and the tablet can be integrally formed with the back plate or the heat sink to further simplify the process. In addition, the bottom portion and the side portion of the back plate or the heat dissipating member may form an T-shaped cross-sectional shape or an L-shaped cross-sectional shape at an angle to each other, because the light bar may be attached to the T-shaped or L-shaped type according to actual needs. The horizontal wall surface or the vertical wall surface of the cross section allows the light-emitting elements of different light-emitting directions to be applied.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.

10. . . Light source assembly

12. . . Backplane

12a. . . Back plate bottom

12b. . . Back side

14. . . Light

16. . . Thermal double-sided tape

18. . . Light guide

18a. . . Light guide plate

22, 24. . . Tablet

22a, 24a. . . Tablet base

22b, 24b. . . Tablet bending

30. . . Light source assembly

32. . . Backplane

32a. . . Backplane bottom plane

34. . . Light

36. . . heat sink

36a. . . Heat sink bottom

36b. . . Heat sink side

38. . . Light guide

38a. . . Light guide plate

42, 44. . . Tablet

46. . . Thermal double-sided tape

50. . . Light source assembly

52. . . Backplane

52a. . . Back plate bottom

52b. . . Back side

54a, 54b. . . Light

62, 64, 66. . . Tablet

70. . . Light source assembly

76. . . heat sink

76a. . . Heat sink bottom

76b. . . Heat sink side

80. . . Light source assembly

82. . . Fastener

821. . . Latch

84. . . Buckle hole

100. . . Light source assembly

102. . . Backplane

104. . . Light

106. . . Thermal double-sided tape

M, N. . . Partial enlargement

P, Q, S, T, U, V. . . end

W. . . contact

Figure 1 is a schematic illustration of a conventional light source assembly.

2 is a schematic view of a light source assembly according to an embodiment of the present invention, and FIGS. 3 and 4 are partial enlarged views M and N of FIG.

FIG. 5 is a schematic view showing that the first pressing piece and the second pressing piece are formed on the back plate.

Figure 6 is a schematic illustration of a tablet according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of a light source assembly according to another embodiment of the present invention.

FIG. 8 is a schematic structural view of a heat sink according to an embodiment of the present invention.

FIG. 9 is a schematic structural view of a heat sink according to another embodiment of the present invention.

FIG. 10 is a schematic diagram of a light source assembly according to another embodiment of the present invention.

11 is a schematic view of a light source assembly according to another embodiment of the present invention.

FIG. 12 is a schematic diagram of a light source assembly according to another embodiment of the present invention.

FIG. 13 is a schematic view of a snap fastener according to an embodiment of the invention.

FIG. 14 is a schematic view showing the manner in which the display card fastener and the buttonhole are engaged and engaged according to an embodiment of the invention.

10. . . Light source assembly

12. . . Backplane

14. . . Light

16. . . Thermal double-sided tape

18. . . Light guide

18a. . . Light guide plate

22, 24. . . Tablet

M, N. . . Partial enlargement

P, Q. . . end

Claims (16)

A light source assembly comprising: a back plate having a bottom portion and at least one side portion, the bottom portion being at an angle to the side portion, the side portion having an elongated shape and having a relative axial direction in the side portion a first end and a second end; a first pressing piece formed on the first end of the side of the backing plate and defining a first receiving space with the side portion; a second pressing a sheet formed on the second end of the side portion of the back panel and defining a second receiving space with the side portion, wherein one of the first pressing piece and the second pressing piece has an S a cross-sectional shape of the font; and a light strip attached to the side of the back panel, a first end of the light strip is disposed in the first receiving space and the first end of the light strip is opposite to the first end A second end is disposed in the second accommodating space. The light source assembly of claim 1, wherein the first end of the light bar abuts or engages the first pressing piece, and the second end of the light bar abuts or engages the second pressing piece. The light source assembly of claim 1, wherein one of the first pressing piece and the second pressing piece comprises: a base portion connecting the side portion of the back plate; and a bent portion connecting the base portion Facing the side of the backing plate, and the bent portion has a spacing from the side of the backing plate. The light source assembly of claim 3, wherein the bent portion faces A surface of the side portion of the back plate is a curved surface. The light source assembly of claim 1, further comprising a heat conductive double-sided tape disposed between the back plate and the light bar. The light source assembly of claim 1, wherein the first pressing piece and the second pressing piece are integrally formed with the backing plate. A light source assembly includes: a back plate disposed on a bottom side of a light guide plate; a heat sink disposed at a position adjacent to a light incident surface of the light guide plate, the heat sink having a bottom portion and a side portion The bottom portion is connected to a side of the back plate and is at an angle to the side portion, the side portion has a longitudinally long outer shape and has a first end and a second end in a long axis direction of the side portion; a first pressing piece is formed on the first end of the side portion of the heat sink and defines a first receiving space with the side portion; a second pressing piece is formed on the side of the heat sink And a second accommodating space is defined on the second end and the side portion, wherein one of the first pressing piece and the second pressing piece has an S-shaped cross-sectional shape; and a light bar, Attached to the side of the heat sink, a first end of the light strip is placed in the first receiving space, and a second end of the light strip opposite the first end is placed in the second Set the space. The light source assembly of claim 7, wherein the heat sink has an L-shaped or a T-shaped cross-sectional shape. The light source assembly of claim 7, wherein the first tablet and the first One of the two compression sheets includes: a base portion connecting the side portions of the heat sink; and a bent portion connecting the base portion and facing the side portion of the heat sink, and the bent portion and the heat sink The side has a spacing. The light source assembly of claim 9, wherein a surface of the bent portion facing the side portion of the heat sink is a curved surface. The light source assembly of claim 7, further comprising a heat conductive double-sided tape disposed between the heat sink and the light bar. The light source assembly of claim 7, wherein the first pressing piece and the second pressing piece are integrally formed with the heat sink. A light source assembly comprising: a back plate having a bottom portion and at least one side portion, the bottom portion being at an angle to the side portion, the side portion having an elongated shape and having a relative axial direction in the side portion a first end and a second end; at least two light strips attached to the side of the back panel, two adjacent light strips connected to each other and forming a joint; a first pressing sheet formed on a first end of the light strip on the first end of the side portion and abutting or snapping; a second pressing piece formed on the second end of the side portion and abutting or engaging a second end of the connected light strips, wherein one of the first pressing piece and the second pressing piece has an S-shaped cross-sectional shape; and a third pressing piece is formed on the side portion And located in the first tablet and the first Between the two sheets, and the third sheet abuts or engages the joint. A light source assembly includes: a back plate disposed on a bottom side of a light guide plate; a heat sink disposed at a position adjacent to a light incident surface of the light guide plate, the heat sink having a bottom portion and a side portion The bottom portion is connected to a side of the back plate and is at an angle to the side portion, the side portion has a longitudinally long outer shape and has a first end and a second end in a long axis direction of the side portion; At least two light strips are attached to the side of the heat sink, and two adjacent light strips are connected to each other to form a joint; a first pressing piece is formed on the first end of the side portion and abuts a first end of the light strips connected or snapped together; a second pressing piece formed on the second end of the side portion and abutting or engaging a second end of the light strips connected thereto Wherein one of the first pressure piece and the second pressure piece has an S-shaped cross-sectional shape; and a third pressure piece formed on the side portion and located at the first pressing piece and the second Between the tablets, and the third pressing piece abuts or engages the joint. A light source assembly comprising: a back plate having a bottom portion and at least one side portion, the bottom portion being at an angle to the side portion, the bottom portion having at least one buckle hole, the side portion having an elongated shape and being on the side portion a first end and a second end in a long axis direction; at least two light strips are attached to the side of the backboard, and two adjacent strips are connected to each other and form a joint. And the button hole is formed adjacent to the contact point; a first pressing piece formed on the first end of the side portion and abutting or engaging a first end of the connected light strips; a second pressing piece formed on the second side of the side portion a second end of the light strips that are connected to and abutted or engaged, wherein one of the first pressure piece and the second pressure piece has an S-shaped cross-sectional shape; and a fastening piece One end abuts the joint and the other end is embedded in the buckle hole. A light source assembly includes: a back plate disposed on a bottom side of a light guide plate; a heat sink disposed at a position adjacent to a light incident surface of the light guide plate, the heat sink having a bottom portion and a side portion The bottom portion has at least one buckle hole, the bottom portion is connected to one side of the back plate and is at an angle with the side portion, the side portion has an elongated shape and has a relative length in a long axis direction of the side portion One end and a second end; at least two light strips attached to the side of the heat sink, two adjacent light strips are connected to each other and form a joint, and the button hole is formed adjacent to the joint a first pressing piece formed on the first end of the side portion and abutting or engaging a first end of the light strips connected thereto; a second pressing piece formed on the side portion a second end of the light strips connected to or engaged with the two ends, wherein one of the first pressing piece and the second pressing piece has an S-shaped cross-sectional shape; and a buckle One end of the piece abuts against the joint and the other end of which is embedded in the buckle hole.