TWI410584B - Annular lamp assembly - Google Patents

Abstract

An annular lamp assembly is provided. The annular lamp comprises an at least one first circuit board, a second circuit board and a tube. The at least one first circuit board comprises a first substrate and a plurality of light emitting diodes disposed on the first substrate. The second circuit board comprises a second substrate and a driving circuit disposed on the second substrate for driving and lighting up the light-emitting diodes. The at least one first circuit board and the second circuit board are fastened on an inside of the tube. Therein, the at least one first circuit board form an annular profile for extending along the inside of tube and electrically connect to the second circuit board.

Description

Ring tube assembly

The invention relates to a ring-shaped lamp tube assembly, in particular to a ring-shaped lamp tube assembly using a light-emitting diode (LED) as a light-emitting source.

Conventional ring lamps use gas discharge to generate light, which is commonly referred to as a fluorescent tube or fluorescent tube. The principle of illuminating is to release electrons by current to activate the mercury vapor in the lamp to generate ultraviolet rays, and the phosphor powder coated on the inner side of the lamp tube absorbs ultraviolet rays, and finally converts and emits visible fluorescent light. However, the photoelectric conversion efficiency of the final conversion to visible light is not high, and high heat is generated.

Furthermore, since the conventional ring lamp contains toxic mercury and emits harmful ultraviolet light and high heat, it must be made of glass to prevent leakage of harmful substances. However, the glass tube made of glass is easily damaged, and the mercury and other substances in the glass tube are leaked out, which is harmful to the human body, and the random disposal will pollute the environment. In addition, since the conventional ring-shaped lamp generates a flickering light source with the frequency of the voltage, the long-term use may cause adverse effects such as fatigue and vertigo on the human eye.

On the other hand, the light source generated by the conventional annular tube is filled on the entire surface of the tube, and the light on the back or the wall of the lighting fixture actually does not contribute much to the illumination, and reduces the efficiency of use of the light.

In view of the above, an annular lamp tube assembly is provided, which has high photoelectric conversion efficiency, illumination efficiency, and does not contain toxic substances in the lamp tube, does not need to be made of glass, and has the advantages of convenient manufacture, assembly, and safety of use. The industry expects to achieve the goal.

The main object of the present invention is to provide an annular lamp tube assembly which can be installed in an existing lighting fixture, which has the characteristics of non-polluting substances, high photoelectric conversion efficiency and illumination efficiency, and has the characteristics of convenient manufacture, assembly and safety. .

To achieve the above object, the present invention provides an annular lamp tube assembly including at least a first circuit board, a second circuit board, and a tube body. The at least one first circuit board includes a first substrate and a plurality of light emitting diodes disposed on the first substrate. The second circuit board includes a second substrate and a driving circuit disposed on the second substrate, and is adapted to drive and illuminate the light emitting diodes. The at least one first circuit board and the second circuit board are fixed inside one of the tubes. The at least one first circuit board forms an annular profile extending along the interior of the tubular body and electrically connected to the second circuit board.

The above objects, technical features and advantages will be more apparent from the following description.

Light-emitting diode (LED) is a cold light source, which has the advantages of long life, low power consumption, no mercury, and is not easy to be broken. Moreover, with the advancement of manufacturing technology and the improvement of luminous efficiency, it has no The characteristics of pollutants and high photoelectric conversion efficiency have made it widely used in lighting applications.

Referring first to Figures 1A, 1B and 1C, the main components of the annular lamp tube assembly 4 of the present invention using a light-emitting diode are shown. Referring to FIGS. 1A and 1C , the annular lamp tube assembly 4 includes at least one first circuit board 1 , a second circuit board 2 , and a tube body 3 . The second circuit board 2 includes a second substrate 21 and a driving circuit 22, and the driving circuit 22 is disposed on the second substrate 21. The first circuit board 1 and the second circuit board 2 are fixed to the inside 33 of the tube body 3. In this embodiment, the annular lamp tube assembly 4 includes a plurality of first circuit boards 1. The first circuit board 1 is sequentially connected to each other to form an annular profile adapted to extend along the interior 33 of the tubular body 3. The annular contour may be one of a circular contour, an elliptical annular contour, a rectangular annular contour, and an irregular annular contour. As shown in FIGS. 1A and 1B, the tubular body 3 is composed of a first annular half shell 31 and a second annular half shell 32.

Please refer to FIG. 2A in combination to show one of the first circuit boards 1 of the present invention. Each of the first circuit boards 1 of the present invention includes a first substrate 11 and a plurality of light emitting diodes 12. The light emitting diodes 12 are arranged on the first substrate 11 at intervals. The first circuit board 1 is electrically connected to the second circuit board 2, and the driving circuit 22 of the second circuit board 2 is adapted to drive the light-emitting diodes 12 of the first circuit board 1.

Please refer to FIG. 2B, FIG. 5 and FIG. 6. For convenience of description, the annular lamp tube assembly 4 can define a ring center 41.

2B is a schematic view showing the first circuit board 1 of the present invention being sequentially connected to each other. In this embodiment, the annular lamp tube assembly 4 is sequentially connected to each other by the four first circuit boards 1 at the two end portions 14a of the first circuit boards 1 to form an annular profile 13. In order to achieve a better illumination effect, the higher the arrangement density of the LEDs 12, the better the uniformity of illumination. The present invention is formed by the light-emitting diodes 12 being equidistant from each other and closely arranged on the first substrate 11 to achieve a high-density arrangement. In the present embodiment, the light-emitting diodes 12 are arranged at intervals substantially 12 degrees from the center of the ring 41. It should be noted that the arrangement interval 12a of the light-emitting diodes on the first substrate 11 is not limited to 3 degrees, and the size and optical design of the visible light-emitting diodes are appropriately adjusted to achieve a better spacing. Lighting effect. Furthermore, the shape of the first circuit board 1 can be based on the use and shape of the annular lamp tube assembly 4, so that the first circuit board 1 is sequentially connected to each other to form a circular contour of various shapes, such as an elliptical annular contour and a moment. The annular contour or the irregular annular contour is not shown in this embodiment.

The detailed structure of the first annular half shell 31 and the second annular half shell 32 will be described in detail below. 3A is a schematic cross-sectional view of the first annular half-shell 31 of the present invention; FIG. 3B is a schematic cross-sectional view of the first annular half-shell 31 in the circle shown in FIG. 3A; FIG. A perspective view of the second annular half-shell 32 of the present embodiment.

As shown in FIGS. 3A and 3B, the first annular half-shell 31 defines an inner ring side wall 31a and an outer ring side wall 31b, and the first annular half-shell 31 includes at least one engaging protrusion 311. Referring to FIG. 4, the second annular half-shell 32 defines an inner ring side wall 32a and an outer ring side wall 32b, and the second annular half-shell 32 includes at least one engaging groove 321 corresponding to the at least one engaging protrusion 311. The at least one engaging protrusion 311 is engaged with the at least one engaging groove 321 to combine the first annular half shell 31 and the second annular half shell 32 into the tubular body 3 as shown in FIGS. 1A and 1B. The length of the engaging groove 321 of the second annular half shell 32 is substantially greater than or equal to the length of the engaging protrusion 311 of the first annular half shell 31. Thereby, the engaging protrusion 311 of the first annular half shell 31 is adapted to be easily engaged in the engaging groove 321 of the second annular half shell 32 to avoid the engagement convexity of the first annular half shell 31. The manufacturing error or assembly error of the engaging groove 321 of the second annular half shell 32 is not matched. It is easily accessible to those skilled in the art that the engaging projection 311 and the engaging groove 321 can be disposed oppositely to the second annular half shell 32 and the first annular half shell 31, respectively.

In this embodiment, as shown in FIGS. 3A and 3B, the plurality of engaging projections 311 are disposed on the inner ring side wall 31a and the outer ring side wall 31b of the first annular half shell 31, and the plurality of engaging grooves 321 are Correspondingly disposed on the inner ring side wall 32a and the outer ring side wall 32b of the second annular half shell 32.

5 is a schematic view showing the distribution of the engaging projections 311 of the first annular half-shell 31 of the present invention, and FIG. 6 is a schematic view showing the distribution of the engaging grooves 321 of the second annular half-shell 32 of the present invention. As shown in FIGS. 5 and 6, the inner ring side wall 31a and the outer ring side wall 31b of the first annular half-shell 31 are equidistantly disposed with a plurality of engaging projections 311, and the inner ring side walls 32a of the second annular half-shell 32 and The outer ring side wall 32b is provided with a plurality of engaging grooves 321 at equal intervals.

In the present embodiment, referring to FIGS. 5 and 6, the inner ring side wall 31a and the outer ring side wall 31b of the first annular half-shell 31 are each provided with an average of four engaging projections 311 and a second annular half-shell. The inner ring side wall 32a and the outer side wall 32b of the 32 are respectively provided with four engaging grooves 321 on average.

Further, in the embodiment, the length 311a of the engaging protrusion 311 disposed on the inner ring side wall 31a of the first annular half-shell 31 is substantially 35 degrees with respect to the ring center 41; The length 321a of the engaging groove 321 of the inner ring side wall 32a of the two annular half-shells 32 is substantially 40 degrees with respect to the ring center 41. Furthermore, in the embodiment, the length 311b of the engaging protrusion 311 disposed on the outer ring side wall 31b of the first annular half-shell 31 is substantially 40 degrees with respect to the ring center 41; The length 321b of the engaging groove 321 of the outer ring side wall 32b of the two annular half-shell 32 is substantially 50 degrees with respect to the ring center 41. It can be seen that the lengths 321a, 321b of the engaging grooves 321 of the second annular half-shell 32 exemplified in the embodiment are substantially greater than or equal to the length 311a of the engaging projection 311 of the first annular half-shell 31, 311b, so that the engaging projection 311 of the first annular half-shell 31 is adapted to be easily engaged in the engaging groove 321 of the second annular half-shell 32. It can be easily inferred by those skilled in the art that the number, length, and angle of the engaging protrusion 311 and the engaging groove 321 are not limited to the above, and the outline of the annular tube assembly 4 can be seen. For the shape or size requirement, the number of the engaging protrusions 311 and the engaging grooves 321 is appropriately arranged, and are respectively disposed on the inner ring side walls 31a of the first annular half shell 31 and the second annular half shell 32 in an equidistant manner, 32a and the outer ring side walls 31b, 32b, thereby achieving a stable assembly and engagement effect.

Referring to FIGS. 3A and 3B, the manner in which the tubular body 3 of the present invention is combined with the first circuit board 1 will be described below. In the embodiment, the first circuit board 1 is fixed to the first annular half shell 31. Referring to FIG. 3B, in order to fix at least one first circuit board 1 to the inner portion 33 of the tube body 3, the tube body 3 includes at least one recess correspondingly disposed on the first annular half-shell 31 and extending along a circumferential direction of the tube body 3. The slot 312 and the at least one flange 313 are engaged with the at least one first circuit board 1 , and the at least one flange 313 abuts against the at least one first circuit board 1 . In this embodiment, the tube body 3 includes a plurality of grooves 312 and a plurality of flanges 313. The groove 312 is disposed on the outer ring side wall 31b of the first annular half shell 31, and the flange 313 is disposed on the inner ring side wall 31a of the first annular half shell 31. In other embodiments, the recess 312 is disposed on the inner ring side wall 31a of the first annular half shell 31, and the flange 313 is disposed on the outer annular side wall 31b of the first annular half shell 31.

On the other hand, in order to position at least one first circuit board 1 at the position of the tube body 3, at least one first circuit board 1 does not slide inside the tube body 3, and the tube body 3 is formed in the first annular half-shell 31. At least one positioning protrusion 314. The at least one first circuit board 1 is suitably positioned by the at least one positioning recess 14 of the first circuit board 1 corresponding to the at least one positioning protrusion 314 of the tube body 3. In this embodiment, the tube body 3 includes a plurality of positioning protrusions 314 that cooperate with the first circuit board 1.

In the present embodiment, referring to FIGS. 3A and 3B, each of the end portions 14a of each of the first circuit boards 1 is formed with two positioning notches 14. The positioning notches 14 of the end portions 14a of the first circuit board 1 respectively cooperate with the positioning protrusions 314 formed on the inner ring side wall 31a and the outer ring side wall 31b of the first annular half shell 31 to position the first circuit. Board 1. It should be noted that the first circuit board may also be provided with only one positioning recess on its edge, correspondingly corresponding to the positioning protrusion 314 of the inner ring side wall 31a or the outer ring side wall 31b of the first annular half shell 31. Yes, it is not limited to the two positioning notches of the end of the first circuit board.

Referring to FIG. 1A and FIG. 1B simultaneously, correspondingly in this embodiment, the second circuit board 2 is fixed to the second annular half-shell 32. The annular lamp assembly 4 includes a plurality of electrodes 325 electrically coupled to the second circuit board 2. The electrode 325 passes through the second annular half-shell 32 and is exposed to the inner side 326 of the tubular body 3. Thereby, the annular lamp tube assembly 4 of the present invention can be installed in an existing lighting fixture in the same manner as a conventional ring lamp.

One of ordinary skill in the art can readily deduce that the recess 312, the flange 313, and the locating projection 314 can be formed oppositely to the second annular half-shell 32, whereby the first circuit board 1 can be coupled to the second annular half-shell 32. Fixed, while the second circuit board 2 can be fixed to the first annular half-shell 31.

It should be noted that the first circuit board 1 and the second circuit board 2 may be a metal core printed circuit board (MCPCB), and the light emitting diode 12 and the second circuit board 2 of the first circuit board 1 The heat generated by the driving circuit 22 can only be dissipated by the first substrate 11 and the second substrate 21, and can be directly dissipated through the plurality of heat dissipation holes 327 of the second annular half shell 32. Therefore, the annular lamp tube assembly 4 of the present invention can meet the heat dissipation requirement without providing a heat sink.

Furthermore, the first annular half shell 31 can transmit light, and the second annular half shell 32 can be opaque or light transmissive. The light generated by the light-emitting diode 12 can enter the environment directly through the first annular half-shell 31 that can transmit light.

In addition, since the annular lamp tube assembly 4 of the present invention utilizes the light-emitting diode as a light source, the tube body 3 does not need to accommodate the mercury vapor of the conventional ring-shaped lamp tube, so the tube body 3 (including the first annular half-shell 31 and The second annular half shell 32) can be made of inexpensive and non-fragile plastic. Further, the first annular half shell 31 and the second annular half shell 32 are made of plastic, and the first annular half shell 31 and the second annular half shell 32 can be simply the above-mentioned engaging protrusion 311 and the engaging groove 321 combination. Furthermore, since the tube 3 is combined with the first annular half shell 31 and the second annular half shell 32, the internal components of the annular tube assembly 4 such as the first circuit board 1 and the second circuit board 2 are obtained. Firstly, the first annular half-shell 31 and the second annular half-shell 31 are combined with each other to be easily engaged and fixed in the tubular body 3, so that the assembly procedure of the annular circular tube assembly 4 of the present invention is relatively simple.

In summary, the present invention provides a ring-shaped lamp tube assembly in which light-emitting diodes are used as light-emitting sources to closely arrange various annular profiles. Therefore, the shape of the lamp tube has various variability, and can be installed not only in existing lighting fixtures. Inside, the light source generated directly enters the environment toward the light exit surface to improve photoelectric conversion efficiency and illumination uniformity. In addition, since the pipe system is combined in a simple snap-fit manner, it is not necessary to use additional parts to lock, and has the advantages of manufacturing, assembly convenience, and safety of use.

The embodiments described above are only intended to illustrate the embodiments of the present invention, and to explain the technical features of the present invention, and are not intended to limit the scope of protection of the present invention. Any changes or equivalents that can be easily made by those skilled in the art are within the scope of the invention. The scope of the invention should be determined by the scope of the claims.

1. . . First board

11. . . First substrate

12. . . Light-emitting diode

12a. . . interval

13. . . Circular contour

14. . . Positioning notch

14a. . . Ends

2. . . Second circuit board

twenty one. . . Second substrate

twenty two. . . Drive circuit

3. . . Tube body

31. . . First annular half shell

31a. . . Inner ring side wall

31b. . . Outer ring side wall

311. . . Clamping bulge

311a, 311b. . . length

312. . . Groove

313. . . Flange

314. . . Positioning bulge

32. . . Second annular half shell

32a. . . Inner ring side wall

32b. . . Outer ring side wall

321. . . Engagement slot

321a, 321b. . . length

325. . . electrode

326. . . Inside

327. . . Vents

33. . . internal

4. . . Ring tube assembly

41. . . Ring center

Figure 1A is a schematic view showing the explosion of the annular lamp tube assembly of the present invention;

1B is a schematic view showing the combination of the annular lamp tube assembly of the present invention;

1C is a schematic perspective cross-sectional view of the annular lamp tube assembly of the present invention;

2A is a schematic view of the first circuit board of the present invention;

2B is a schematic view showing the first circuit board of the present invention being sequentially connected to each other;

3A is a schematic perspective cross-sectional view showing the first annular half-shell of the annular lamp tube assembly of the present invention combined with the first circuit board;

3B is a schematic perspective cross-sectional view of the first annular half-shell in the circle shown in FIG. 3A combined with the first circuit board;

Figure 4 is a perspective view of the second annular half-shell of the present invention;

Figure 5 is a schematic view showing the distribution of the engaging projections of the present invention;

Figure 6 is a schematic view showing the distribution of the engaging grooves of the present invention.

1. . . First board

11. . . First substrate

14. . . Positioning notch

2. . . Second circuit board

twenty one. . . Second substrate

twenty two. . . Drive circuit

3. . . Tube body

31. . . First annular half shell

31a. . . Inner ring side wall

31b. . . Outer ring side wall

314. . . Positioning bulge

32. . . Second annular half shell

32a. . . Inner ring side wall

32b. . . Outer ring side wall

325. . . electrode

326. . . Inside

327. . . Vents

4. . . Ring tube assembly

Claims (13)

An annular lamp tube assembly comprising: a first circuit board, wherein the first circuit board comprises a first substrate and a plurality of light emitting diodes disposed on the first substrate; and a second circuit board comprising a first a second substrate and a driving circuit disposed on the second substrate to drive and illuminate the light emitting diodes; and a tube body including at least one groove extending along a circumferential direction of the tube body and at least one convex portion The first circuit board and the second circuit board are fixed inside one of the tube bodies, the tube body comprises: a first annular half shell, which is permeable to light; and a second annular half shell, a plurality of heat dissipation holes are disposed; wherein the first circuit board forms an annular profile extending along the interior of the pipe body and electrically connected to the second circuit board, and the groove and the first circuit The plate is engaged, and the flange abuts against the first circuit board. The annular tube assembly of claim 1, wherein the first annular half shell and the second annular half shell each define an inner ring sidewall and an outer ring sidewall, the first annular half shell including a a latching protrusion, the second annular half shell includes an engaging groove corresponding to the engaging protrusion, and the engaging protrusion is engaged with the engaging groove to combine the first annular half shell and the The second annular half shell is the tube body. The ring light tube assembly of claim 2, wherein one of the lengths of the engaging groove is greater than or equal to a length of the engaging projection. The ring-shaped lamp tube assembly of claim 3, wherein the first annular half-shell further comprises a plurality of the engaging projections, the second annular half-shells comprising a plurality of the corresponding snaps corresponding to the engaging projections a slot, the engaging protrusions are disposed on the first annular half shell The inner ring side wall and the outer ring side wall, and the engaging grooves are correspondingly disposed on the inner ring side wall and the outer ring side wall of the second annular half shell. The annular lamp tube assembly of claim 4, wherein the inner ring side walls of the first annular half-shell are equidistantly disposed with the engaging protrusions, and the inner ring side walls of the second annular half-shells are correspondingly The outer ring side walls of the first annular half-shell are equidistantly disposed with the engaging protrusions, and the outer ring side walls of the second annular half-shell are correspondingly equidistantly disposed. There are such engagement slots. The annular lamp tube assembly of claim 1, wherein the first annular half-shell comprises the at least one groove and the at least one flange extending along the circumferential direction of the pipe body, the groove and the first A circuit board is engaged, and the flange abuts the first circuit board to fix the first circuit board to the first annular half shell. The annular lamp tube assembly of claim 6, wherein the first annular half-shell comprises at least one positioning protrusion, the first circuit board comprising the at least one positioning notch engaged with the positioning protrusion for positioning The first circuit board. The annular tube assembly of claim 1, wherein the second annular half-shell comprises the at least one groove and the at least one flange extending along the circumference of the tube, the groove and the first The circuit board is engaged, and the flange abuts against the first circuit board to fix the first circuit board to the second annular half shell. The annular lamp tube assembly of claim 8, wherein the second annular half-shell comprises at least one positioning protrusion, the first circuit board comprising the at least one positioning notch engaged with the positioning protrusion to position the The first board. The ring light tube assembly of claim 1, wherein the second circuit board is fixed to the second annular half shell. The ring light tube assembly of claim 10, the ring light tube assembly comprising a plurality An electrode, and the electrodes are electrically connected to the second circuit board and pass through the second annular half shell to be exposed inside one of the tubes. The ring light tube assembly of claim 1, wherein the light emitting diode systems are equidistantly arranged on the first substrate. The ring light tube assembly of claim 1, wherein the annular light tube assembly comprises a plurality of the first circuit boards, which are sequentially connected to each other to form the annular contour.