TWI499737B - Light emitting device - Google Patents

Description

Illuminating device

The present invention relates to a light-emitting device, and more particularly to a light-emitting device assembled in a snap-fit manner.

The size and specifications of the conventional light-emitting device are regulated by national/international standards such as CNS 691 and IEC 60081, and include a light-emitting element, a light-transmitting tube member, and a two-end cover, wherein the light-emitting element is disposed in the light-transmitting tube member, and the two-end cover is respectively Cover the two ends of the closed light pipe.

The current end caps are combined with the light-transmitting pipe fittings to ensure the structural strength, but at the same time increase the assembly time and cost, even need to add parts to cover the screws themselves, or cover the assembled tools when assembled ( Such as a screwdriver to pass through the hole.

The invention provides a light-emitting device which assembles an end cover of a light-emitting device by means of a snap-fit manner, thereby improving assembly speed.

According to an embodiment of the invention, a lighting device is proposed. The light emitting device comprises a light transmitting tube member, a heat dissipating bottom plate, a first engaging member and an end cover. The heat dissipating bottom plate is disposed in the light transmissive tube member, and the light emitting element is disposed on the heat dissipating bottom plate, and the first engaging member is disposed at one end of the light transmissive tube member and has a first card hole. The end cap has an inner side wall and includes a first engaging portion. The first engaging portion has a first fixing surface and a first guiding surface. The first fixing surface is fixed on the inner side wall, and the first guiding surface is closer to the first fixing surface than the opening of the end cover The manner is inclined with respect to the first fixed surface. When the end cover is sleeved into one end of the light-transmitting tube, the first engaging portion is engaged with the first card hole through the first guiding surface.

In order to provide a better understanding of the above and other aspects of the present invention, the following detailed description of the embodiments and the accompanying drawings

1A and 1B, FIG. 1A is an external view of a light-emitting device according to an embodiment of the present invention, and FIG. 1B is an exploded view of the light-emitting device of FIG. 1A. The light-emitting device 100 is, for example, a light tube including a light-transmitting tube member 110, a light-emitting element 120 (Fig. 1B), a heat-dissipating bottom plate 130 (Fig. 1B), a first engaging member 140 (Fig. 1B), and a second engaging portion. Piece 160 (Fig. 1B) and two end caps 150. As shown in FIG. 1A, the two end caps 150 are respectively disposed at two ends of the light transmitting tube member 110.

As shown in FIG. 1B, the first engaging member 140 has a first engaging hole 141, and the end cover 150 has a first engaging portion 152. When the end cover 150 is sleeved on one end of the light-transmitting tube member 110, the first engaging portion 152 of the end cover 150 is engaged with the first card through the first guiding surface 152b of the first engaging portion 152 (Fig. 2). The first card hole 141 of the fitting 140. By assembling the end cover 150 and the first engaging member 140 by the engagement, the assembling property can be improved.

The detailed structure of the light-emitting device 100 will be further described below with reference to FIGS. 2 to 5.

Referring to Fig. 2, there is shown an enlarged view of a portion 2' of the light-transmitting tube member 110 of Fig. 1A.

The light-transmissive tube member 110 is, for example, a long-shaped light-transmitting tube member, but may also be a short-type light-transmitting tube member, the length of which is not limited by the embodiment of the present invention. Light-transmitting pipe member 110 The interior has a space 111 for accommodating the light-emitting component 120, the heat dissipation substrate 130, the first latching member 140, and the second latching member 160. In order to improve the light-emitting brightness of the light-emitting device 100, the light-transmitting tube member 110 is made of a material having a high light transmittance, such as glass or plastic. In addition, although the cross-sectional shape of the light-transmitting tube member 110 of the present embodiment is circular, it is not limited thereto. In other embodiments, the cross-sectional shape of the light-transmitting tube member may be changed according to actual application requirements, such as a light-transmitting tube member. The cross-sectional shape may be a rectangle or an ellipse or the like.

The light-emitting element 120 is disposed on the heat dissipation substrate 130, such as an elongated light source module or other suitable light source. This embodiment is represented by a light-emitting diode light bar. The light emitting element 120 can be attached to the heat dissipation substrate 130 by attaching, locking or snapping, or simply placed on the heat dissipation substrate 130.

The heat dissipation substrate 130 is used to derive the heat generated by the light-emitting element 120, and may be made of a material having good thermal conductivity, such as an aluminum extruded heat sink. Further, the heat dissipation base plate 130 may be made of a material having good workability so that it can be formed by a bending or stamping process.

The first engaging member 140 and the second engaging member 160 are continuous elongated strips having a length greater than the length of the transparent tubular member 110 and both ends of which extend beyond the ends of the transparent tubular member 110 (FIG. 1B). In other embodiments, the two first engaging members 140 having a shorter length may be respectively disposed at the two ends of the transparent tubular member 110 and beyond the two ends of the transparent tubular member 110.

The first engaging member 140 and the second engaging member 160 respectively have a first engaging hole 141 and a second engaging hole 161. The first engaging member 140 has a protruding end portion 142 protruding beyond one end of the transparent tubular member 110, and the first engaging hole 141 is disposed on the protruding end portion 142. In an embodiment, the first card holes 141 are apart from each other. The end face 110s of the light transmitting tube member 110 is about 1 to 3 centimeters (mm), although this value is not intended to limit the embodiment of the present invention. Since the first card hole 141 is disposed on the protruding end portion 142, it is exposed to the light transmitting tube member 110, and the assembly of the end cap 150 is facilitated.

Similarly, the second engaging member 160 has a protruding end portion 162 that protrudes beyond one end of the light transmitting tubular member 110, and a second engaging hole 161 may be disposed at the protruding end portion 162. In one embodiment, the second card hole 161 is about 1 to 3 cm away from the end surface 110s of the light transmitting tube member 110. However, this value is not intended to limit the embodiment of the present invention.

One side of the first engaging member 140 and the second engaging member 160 are respectively connected to the two sides of the heat dissipating bottom plate 130, so that the first engaging member 140 and the second engaging member 160 and the heat dissipating bottom plate 130 form a similar U. Shaped structure. The other side of the first engaging member 140 and the second engaging member 160 abuts against the rib 112 on the transparent tubular member 110. The ribs 112 can limit the amount of rotation of the first engaging member 140 and the second engaging member 160 to achieve the effect of stabilizing the first engaging member 140 and the second engaging member 160. The first engaging member 140 and the second engaging member 160 can be assembled or engaged to the heat dissipating bottom plate 130, or can be integrally formed with the heat dissipating bottom plate 130. In addition, the first engaging member 140, the second engaging member 160, and the heat dissipation base plate 130 may be made of the same or different materials. In this example, the first engaging member 140 and the second engaging member 160 can be made of a material having good thermal conductivity, and the heat dissipating area of the first engaging member 140, the second engaging member 160 and the heat dissipating bottom plate 130 is increased. .

Please refer to FIG. 3 and FIG. 4 at the same time. FIG. 3 is an enlarged view of the end cover 150 in FIG. 1B, and FIG. 4 is a top view of the end cover in FIG.

The end cover 150 has an inner side wall 151, a first engaging portion 152 and a second card Joint 153. The first engaging portion 152 includes a first fixing surface 152a and a first guiding surface 152b. The second engaging portion 153 includes a second fixing surface 153a and a second guiding surface 153b. The first engaging portion 152 is disposed on the inner side wall 151 with the first fixing surface 152a, and the first guiding surface 152b is closer to the first fixing surface 152a than the opening 150p of the end cover 150. The face 152a is inclined.

Similarly, the second engaging portion 153 is disposed on the inner side wall 151 with the second fixing surface 153a, and the second guiding surface 153b is opposite to the second fixing surface 153a by the opening 150p of the end cover 150. The two fixing faces 153a are inclined.

In this embodiment, the first guide angle surface 152b and the second guide angle surface 153b are exemplified by the inclined surface. However, in other embodiments, the first guide angle surface 152b and the second guide angle surface 153b may be inclined surfaces, curved surfaces or A combination thereof, wherein the slope is, for example, a plane, and the curved surface is, for example, a cylindrical surface, an elliptical cylinder, or the like. In addition, the surface geometric profiles of the first and second guide faces 152b and 153b may be identical or different.

The first guiding surface 152b is spaced apart from the second guiding surface 153b by a second distance L2 (Fig. 4), and the first aperture 141 is spaced apart from the second aperture 161 by a first distance L1 (Fig. 2), wherein The second distance L2 is smaller than the first distance L1. Please refer to FIG. 5 at the same time, which shows a schematic view of the combination of the engaging portion of the end cap and the engaging hole of the engaging member. In this design, when the end cover 150 is sleeved into one end of the light-transmitting tube member 110, the first guiding surface 152b of the first engaging portion 152 pushes the first engaging member 140 to retract, thereby allowing the first card to be retracted. The joint 152 enters the first card hole 141. After the first engaging portion 152 enters the first engaging hole 141, the first engaging portion 152 protrudes beyond the first engaging hole 141 and is not easily engaged with the first engaging portion 141. The piece 140 is detached. In other embodiments, the first engaging member 140 has flexibility such that the first engaging member 140 is more easily retracted when pushed by the first guiding surface 152b. The process of the second engaging portion 153 entering the second engaging hole 161 is similar to the process of the first engaging portion 152 entering the first engaging hole 141, and details are not described herein again.

In order to make the engaging member and the engaging portion more secure, the illuminating device of the embodiment further includes an adhesive (not shown) for bonding the first engaging member 140 and the first engaging member 150. The portion 152 and the second engaging portion 153 of the end cover 150 are bonded to the second engaging member 160.

The illuminating device 100 of the present embodiment includes two sets of engaging structures formed by the engaging members and the engaging portions, but is not limited thereto. In other embodiments, one of the engaging structures may be omitted, that is, the first engaging portion 152 and the first engaging hole 141 (or the first engaging member 140) may be omitted, or the second engaging portion may be omitted. 153 and the second card hole 161 (or the second engaging member 160).

In addition, the engaging portion of the end cover of the present invention is not limited to the above-mentioned design, as long as the engaging portion of the end cover can be engaged with the engaging hole of the engaging member, which will be exemplified below.

Please refer to FIG. 6 , which is an enlarged view of an end cover of a light emitting device according to another embodiment of the present invention. In this example, the light-emitting device includes a light-transmitting tube member 110 (not shown), a light-emitting element 120 (not shown), a heat-dissipating bottom plate 130 (not shown), a first engaging member 140 (not shown), and an end cover 250. .

The end cover 250 includes two sets of engaging portions, and each of the engaging portions includes a first engaging portion 152 and a bottom plate 253. The two first engaging portions 152 each have an end portion 152c facing the inner side of the end cover 250. The bottom plate 253 connects the two end portions 152c of the two first engaging portions 152, so that the overall rigidity of the two first engaging portions 152 and the bottom plate 253 can be improved. When the end cover 250 is sleeved into the transparent tube member 110 At one end, the two first guiding surfaces 152b of the two first engaging portions 152 are simultaneously engaged into the first engaging holes 141. In addition, the embodiment of the present invention does not limit the number of groups of the engaging portions, and may be a single group or two or more groups.

The fixing manner of the engaging hole of the engaging member and the engaging portion of the end cover is better and faster than that of the screw locking, which greatly reduces the assembly time and cost.

In conclusion, the present invention has been disclosed in the above embodiments, but it is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100‧‧‧Lighting device

110‧‧‧Transparent pipe fittings

110s‧‧‧ end face

111‧‧‧ Space

112‧‧‧ Ribs

120‧‧‧Lighting elements

130‧‧‧Dissipation bottom plate

140‧‧‧First card fittings

141‧‧‧First card hole

142, 162‧‧‧ protruding end

150, 250‧‧‧ end caps

150p‧‧‧ openings

151‧‧‧ inner side wall

152‧‧‧First engagement department

152a‧‧‧First fixed surface

152b‧‧‧first guide angle

152c‧‧‧ end

153‧‧‧Second engagement department

153a‧‧‧Second fixed surface

153b‧‧‧second guide angle

160‧‧‧Second snap-on parts

161‧‧‧Second card hole

253‧‧‧floor

2’‧‧‧Local

L1‧‧‧ first distance

FIG. 1A is a perspective view showing a light-emitting device according to an embodiment of the present invention.

Fig. 1B is an exploded view of the light-emitting device of Fig. 1A.

Fig. 2 is a partially enlarged view showing the light-transmitting pipe member of Fig. 1A.

Figure 3 is an enlarged view of the end cap of Figure 1B.

Figure 4 is a top view of the end cap of Figure 3.

FIG. 5 is a schematic view showing the combination of the engaging portion of the end cover of FIG. 1B and the engaging hole of the engaging member.

FIG. 6 is an enlarged view of an end cover of a light emitting device according to another embodiment of the present invention.

110‧‧‧Transparent pipe fittings

120‧‧‧Lighting elements

130‧‧‧Dissipation bottom plate

140‧‧‧First card fittings

141‧‧‧First card hole

150‧‧‧End cover

160‧‧‧Second snap-on parts

Claims (14)

A light-emitting device comprising: a light-transmitting tube; a heat-dissipating bottom plate disposed in the light-transmitting tube; a light-emitting element disposed on the heat-dissipating bottom plate; a first engaging member disposed at one end of the light-transmitting tube member The first engaging hole has an inner side wall and includes a first engaging portion, the first engaging portion has a first fixing surface and a first guiding surface, and the first engaging portion The first fixing surface is fixed on the inner side wall, and the first guiding surface is inclined relative to the first fixing surface in such a manner as to be closer to the first fixing surface toward the opening of the end cover; When the cover is inserted into one end of the light-transmitting tube, the first engaging portion is engaged with the first card hole through the first guiding surface. The illuminating device of claim 1, wherein the first guiding surface is a bevel, a curved surface or a combination thereof. The illuminating device of claim 1, comprising: the first engaging portions are oppositely disposed and each having an end portion facing the end cap; and a bottom plate connecting the first engaging portions The ends of the department. The illuminating device of claim 1, wherein the first engaging member is coupled to the heat dissipating bottom plate. The illuminating device of claim 1, wherein the first engaging member and the heat dissipating bottom plate are integrally formed. Such as the illuminating device described in claim 1 of the patent scope, The second engaging member has a second engaging hole, wherein the second engaging portion further includes a second engaging portion, and the second engaging portion has a second fixing surface and a second guiding surface. The second engaging portion is fixed on the inner side wall by the second fixing surface, and the second guiding surface is opposite to the second fixing surface in such a manner that the opening of the end cover is closer to the second fixing surface. The second engaging portion is engaged with the second engaging hole through the second guiding surface when the end cover is inserted into the end of the transparent tubular member. The illuminating device of claim 6, wherein the first engaging member and the second engaging member are respectively connected to two sides of the heat dissipating bottom plate. The illuminating device of claim 6, wherein the first engaging member, the second engaging member and the heat dissipating bottom plate are integrally formed. The illuminating device of claim 6, wherein the first card hole is spaced apart from the second card hole by a first distance, and the first guiding surface and the second guiding surface are separated by a second distance, Wherein the first distance is greater than the second distance. The light-emitting device of claim 1, wherein the light-emitting device is a light-emitting diode lamp, and the light-emitting device is a light-emitting diode light bar, and the light-transmitting pipe member is a long light-transmitting pipe member. The illuminating device of claim 1, wherein the first engaging member comprises a protruding end protruding beyond an end surface of the light-transmitting tubular member, the first engaging hole being located at the protruding end portion. The illuminating device of claim 11, wherein The first card hole is spaced apart from the end surface by a distance. The light-emitting device of claim 1, wherein the light-transmitting tube member comprises a rib, one side of the first engaging member is adjacent to the rib, and the other side of the first engaging member is connected to the rib. Heat sink. The illuminating device of claim 1, further comprising: an adhesive bonding the first engaging member and the first engaging portion of the end cover.