TWI510735B - Light-emitting diode lamp - Google Patents

Description

Light-emitting diode tube

The present invention relates to a lamp, and more particularly to a light-emitting diode lamp.

In a general lamp, a driving circuit (for example, a circuit board) is required to connect the light bar to enable the lamp to emit light. The driving circuit is located in the end cover on both sides of the lamp tube, and the light bar is located in the central transparent tube body. However, because the size of the driving circuit is too long to protrude the end cover, the light-transmitting tube body is often formed to form a dark band, or a longer end cover is required to cover the driving circuit, so that the overall light-transmissive area of the lamp tube is reduced.

Accordingly, the present invention provides a lamp tube structure that not only does not require the use of a longer end cap to cover the drive circuit, but also avoids the generation of a dark strip by the light transmissive tube body.

The invention relates to a light-emitting diode lamp tube, which utilizes an optical component and a light-emitting diode arrangement to avoid dark bands in the light-transmissive tube body of the lamp tube, and also shorten the end cover of the lamp tube. length.

According to the present invention, a light-emitting diode lamp tube includes a light-transmitting tube body, a light bar, a first end cover and a second end cover, a driving circuit, and a Optical element. The light transmissive tube body has a first end and a second end. The light bar is located in the light-transmitting tube body, wherein the light bar has a plurality of light-emitting diodes. The first end cover and the second end cover are respectively sleeved on the first end and the second end of the light transmitting tube body. The driving circuit is received in the first end cover and electrically connected to the light emitting diode on the light bar. The optical component is disposed in the tube body adjacent to the first end of the first end cover and the first end of the light transmissive tube body for shielding the driving circuit protruding from the first end cap, and is irradiated on the optical component by changing the light emitting diode The direction of the path of the outgoing light illuminates the dark band caused by the drive circuit of the first end cap.

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

100‧‧‧Lighting diode lamp

10‧‧‧Light pipe body

101‧‧‧ first end

102‧‧‧ second end

20‧‧‧Light strips

200‧‧‧Light Diode Wafer

201, 202‧‧‧Lighting diode

208‧‧‧Transparent package

209‧‧‧Light-transmitting lens

2011, 2012, 2013, 2014‧‧‧Light Emitting Diodes

30‧‧‧First end cap

40‧‧‧Second end cap

50‧‧‧ drive circuit

60‧‧‧Optical components

601‧‧‧Into the glossy surface

602‧‧‧ accommodating space

L1, L2‧‧‧ launch path

X, y, z‧‧‧ coordinate axis

FIG. 1 is a perspective view of a light-emitting diode lamp according to an embodiment of the invention.

FIG. 2 is a partially enlarged schematic view showing the light emitting diode of FIG. 1

3 is a partial cross-sectional view of the light-emitting diode lamp of the embodiment of the present invention in the xz plane.

4A and 4B are schematic views showing a light emitting diode package according to another embodiment of the present invention.

FIG. 1 is a perspective view of a light-emitting diode lamp 100 according to an embodiment of the present invention. FIG. 2 is a partially enlarged schematic view showing the light-emitting diode lamp 100 of FIG. 1. As shown in the first and second figures, the LED lamp 100 includes a light-transmissive tube body 10, a light bar 20, and a first end cover 30. And a second end cap 40, a driving circuit 50 and an optical component 60. The light transmissive tube body 10 has a first end 101 and a second end 102. The light bar 20 is located in the light-transmissive tube body 10, and the light bar 20 has a plurality of light-emitting diodes 201 and at least one light-emitting diode 202. The first end cover 30 and the second end cover 40 are respectively sleeved on the first end 101 and the second end 102 of the transparent tube body 10. The driving circuit 50 is housed in the first end cover 30 and electrically connected to the LED 201 on the light bar 20. The optical component 60 is disposed in the tube body of the first end cap 30 adjacent to the first end 101 of the light transmissive tube body 10 for shielding the driving circuit 50 protruding from the first end cap 30, and the at least one LED body 202 is emitted. Upon exiting the optical element 60, the path direction of the exiting light is changed via the optical element 60 to illuminate the dark band caused by the drive circuit 50 that protrudes from the first end cap 30.

In the present embodiment, the light-emitting diode 201 is different from the light-emitting surface of the light-emitting diode 202 (indicated by oblique lines in FIGS. 1 and 2). For example, the light exiting surface of the light emitting diode 201 is perpendicular to the z direction, and the light emitting surface of the light emitting diode 202 is perpendicular to the x direction. FIG. 3 is a partial cross-sectional view of the LED lamp 100 of the embodiment of the present invention in the xz plane. The light emitting diode 201 and the light emitting diode 202 may be a light emitting diode wafer or a package having a light emitting diode.

As shown in FIG. 3, in an embodiment, the light emitting diode 201 may include a plurality of front view LED packages 2011, and the light emitting diodes 202 may include at least one lateral direction. A light-emitting diode (side view LED) package 2012. The light emitting diode 202 (or the lateral light emitting diode package 2012) is located at the end of the light bar 20, adjacent to the first end 101 and adjacent to the optical element 60.

Optical element 60 can be a reflective sheet or a light directing structure. Referring also to Figures 1 and 2, in one embodiment, optical component 60 is a reflective sheet. The reflective sheet is disposed obliquely in the body of the first end cap 30 adjacent to the first end 101 of the light transmissive tube body 40 and faces the light emitting diode. The drive circuit 50 protruding from the first end cap 30 can be obscured by the vertical projection of the reflective sheet.

The reflective sheet can be, for example, a UX-188 reflective sheet, has a reflective lacquer or is made of a material such as metallic silver, and has means for reflecting light.

In another embodiment, optical component 60 is a light directing structure. Refer to Figures 1~3. The light guiding structure has a light incident surface 601 such that the outgoing light path of the light emitting diode is changed after entering the light incident surface 601. The light incident surface 601 can be an inclined surface and face the light emitting diode.

As shown in FIG. 3, the light emission path of the forward light emitting type LED package 2011 can be as shown by L1, and the light emitting path of the side light emitting type LED package 2012 can be as shown by L2. Since the lateral light-emitting diode package 2012 emits light toward the light-incident surface 601 of the optical element 60, the light is changed after entering the light-incident surface 601, and is then emitted to the outside of the light-transmitting tube 10.

In addition, the LEDs 202 can also be different LED packages. 4A and 4B are schematic views showing the light emitting diode packages 2013 and 2014 according to another embodiment of the present invention. As shown in FIG. 4A, the LED package 2013 is such that the LED package 200 is covered by the transparent package 208. In another embodiment, the transparent package 208 can be doped with phosphor powder. As shown in FIG. 4B, the light-emitting diode package 2014 is such that the light-emitting diode wafer 200 is covered by the light-transmitting lens 209. Due to the structure of the LED package 2013 and 2014, the light exiting angle is large, and the lateral and forward light emission paths can be provided at the same time. Therefore, the LEDs 202 can also be disposed in the two embodiments. The end of the light bar 20 is adjacent to the optical element 60.

In one embodiment, the LED 201 and the LED 202 can be all of the LED package 2013 or all of the LED package 2014.

In an embodiment, the light guiding structure further includes an accommodating space 602 for accommodating the driving circuit protruding from the first end cover. As can be seen from the emission path L2, the light emitted by the lateral illumination type LED package 2012 can illuminate the dark band caused by the drive circuit 50 of the first end cover 30.

As can be seen from the above embodiments, the light-emitting diode of the present invention is configured by the optical element 60, the light-emitting diode 201, and the light-emitting diode 202, so that dark bands can be avoided in the light-transmitting tube body 10. At the same time, the length of the first end cap 30 and the second end cap 40 can also be shortened (for example, from a general 30 to 40 mm to 15 mm). Further, the optical element 60 of the present invention can be applied to lamps of various shapes, and is not limited to the circular shape as shown in FIGS. 1 to 3.

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.

30‧‧‧First end cap

50‧‧‧ drive circuit

60‧‧‧Optical components

601‧‧‧Into the glossy surface

602‧‧‧ accommodating space

2011‧‧‧ Forward Light Emitting Diode Package

2012‧‧‧Side-emitting LED package

L1, L2‧‧‧ launch path

x, z‧‧‧ coordinate axis

Claims (10)

A light-emitting diode lamp comprising: a light-transmissive tube body having a first end and a second end; a light strip disposed in the light-transmitting tube body, wherein the light strip has a plurality of light-emitting diodes a first end cover and a second end cover are respectively sleeved on the first end and the second end of the transparent tube; a driving circuit is received in the first end cover, and The light-emitting diodes are electrically connected to the light-emitting diodes, wherein a part of the driving circuit protrudes from the first end cover into the light-transmitting tube body; and an optical component is disposed on the first end cover and the light-transmitting tube a body adjacent to the first end of the body, wherein the optical element shields the driving circuit protruding from the first end cap and changes a path of the emitted light that is irradiated on the optical element by the light emitting diodes The direction illuminates the dark band caused by the driving circuit of the first end cover. The light-emitting diode lamp of claim 1, wherein the light-emitting diodes are light-emitting diode chips or packages having light-emitting diodes. The light-emitting diode lamp of claim 1, wherein the light-emitting diodes comprise a plurality of forward-emitting light-emitting diode packages, and at least one lateral light-emitting diode package body. The light-emitting diode lamp of claim 3, wherein the lateral light-emitting diode package is located at an end of the light bar, adjacent to the first end Adjacent to the optical element. The light-emitting diode lamp of any one of claims 1 to 4, wherein the optical element is a reflective sheet. The light-emitting diode lamp of claim 5, wherein the reflective sheet is disposed obliquely in the body of the first end cap adjacent to the first end of the light-transmitting tube body and faces the tube The light emitting diode, the driving circuit protruding from the first end cover can be shielded by the vertical projection of the reflective sheet. The illuminating diode lamp of any one of claims 1 to 4, wherein the optical component is a light guiding structure. The light-emitting diode lamp of claim 7, wherein the light guiding structure has a light-incident surface such that the light-emitting paths of the light-emitting diodes are changed after entering the light-incident surface. The light-emitting diode lamp of claim 8, wherein the light-incident surface is an inclined surface and faces the light-emitting diodes. The light-emitting diode lamp of claim 9, wherein the light guiding structure further comprises an accommodating space for accommodating the driving circuit protruding from the first end cover.