TWI440797B - LED bulb structure - Google Patents

Description

LED bulb structure

The invention relates to an LED bulb structure, in particular to an LED bulb structure which increases the LED illumination angle to enhance the brightness.

With the rapid depletion of energy consumption, how to reduce the energy consumption of various items in the maintenance of modern living standards and even the pursuit of higher living technology has become a major issue facing all mankind. Taking lighting as an example, LEDs (LEDs) ) It has an extremely long service life and extremely low power consumption. It is more energy-saving and carbon-reducing than tungsten bulbs and fluorescent tubes. In addition, LEDs have the advantages of safe fireproof, noiseless and ultraviolet radiation due to the cold light source. Lighting is gradually replacing existing lighting fixtures.

The commercially available LED bulb structure includes a lamp cap, a lamp cover, a substrate, and an LED die and a driving circuit mounted on the substrate. The lamp cap is electrically connected to the LED die and the driving circuit, and the lamp cover is mounted and fixed on the top end of the substrate to cover the LED die. When the LED die module is activated for illumination, the light generated by the LED die can be illuminated through the lamp cover for illumination purposes. However, under this architecture, in the event of a LED die or drive circuit failure, the entire LED bulb structure must be discarded, resulting in unnecessary waste, and the light emitted by the LED is more concentrated, so the brightest in front of the LED, around The brightness is insufficient.

In view of the above, the present invention proposes an LED bulb structure that increases the illumination angle to enhance the brightness in order to effectively overcome the above problems in view of the above-mentioned shortcomings of the prior art.

The main object of the present invention is to provide an LED bulb structure in which LED dies are arranged on a three-dimensional substrate, and light is emitted from various directions above the horizontal level to increase the illuminating angle and enhance the brightness of the bulb.

Another object of the present invention is to provide an LED bulb structure that can be applied to a desk lamp to simplify the overall desk lamp architecture.

Still another object of the present invention is to provide an LED bulb structure that can be replaced when a LED die or an electronic component fails, without discarding the entire set of LED bulbs, thereby reducing unnecessary waste and achieving environmental protection and Economic Effects.

Another object of the present invention is to provide an LED bulb structure in which heat dissipating fins can be disposed on the lower lamp cup and the lamp holder to increase the heat dissipation area and reduce the probability that the LED crystal grains are worn out due to overheating.

In order to achieve the above object, the present invention provides an LED light bulb structure, comprising: an LED module comprising an upper lamp cup and a three-dimensional substrate, wherein the three-dimensional substrate is disposed in the upper lamp cup, and is respectively disposed on the plurality of surfaces of the three-dimensional substrate There is a plurality of LED dies, a first joint portion is disposed at the bottom of the LED module; a driving circuit module is disposed in the lower lamp cup, and the driving circuit module is provided with a second joint portion that is engaged with the first joint portion To form an electrical connection; and a lamp cover that is disposed on the LED module.

The purpose, technical content, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments.

The present invention relates to an LED bulb structure. Please refer to FIG. 1 , FIG. 2 and FIG. 3 simultaneously, which are cross-sectional, sectional and exploded views of the LED bulb structure of the present invention. As shown in the figure, the LED light bulb structure 10 of the present invention mainly comprises a lower lamp cup 12, a driving circuit module 14, an LED module 16 and a lamp cover 18.

The bottom end of the lower lamp cup 12 is provided with a power connector 20, which can be a screw connector structure of the prior art, a screw connector having an external thread and a first electrical contact 22 at the top end. The external thread around the screw joint is another electrical contact. The two electrical contacts are the first wire 23 in the figure, which is the input end of the positive and negative poles of the bulb.

The driving circuit module 14 is received in the lower lamp cup 12, and the driving circuit module 14 includes a first circuit board 24; a female screwing portion 26 disposed at the center of the first circuit board 24 is used as the second a bonding portion; and at least one electronic component 28 disposed on the first circuit board 24 and disposed around the outer periphery of the female screwing portion 26. The second end of the first circuit board 24 is provided with two second electrical properties. The contact 30 is electrically connected to the positive and negative terminals of the first electric wire 23 connected to the power connector 20. A third electrical contact 44 is disposed above the first circuit board 24 and is located in the center of the female screw portion 26.

The LED module 16 mainly includes an upper lamp cup 32, a three-dimensional substrate 33, a plurality of second circuit boards 34, and a plurality of LED dies 36 disposed on the second circuit board 34. The three-dimensional substrate 33 can be a triangular pyramid, a cube, or The rectangular parallelepiped or the polygonal body is provided with a second circuit board 34 on each side of the three-dimensional substrate 33, and the second circuit board 34 on each side further comprises a film 37 covering the LED die 36. A bottom surface of the upper lamp cup 32 is provided with a male screw portion 38 corresponding to the female screw portion 26, and the male screw portion serves as a first joint portion. The bottom end of the upper cup 32 engages the top end of the lower cup 12, and the joining described herein can be performed in any manner known to those skilled in the art, for example, as shown in the upper cup. The bottom end of the 32 is provided with a recess 40 for fitting into the top end of the lower lamp cup 12. The second circuit board 34 is located at the bottom of the three-dimensional substrate 33 and is disposed in the upper lamp cup 32 and electrically connected to the male screw portion 38. The electrical connection described herein may be as shown in the figure, and the second circuit Two fifth electrical contacts 42 are disposed at the bottom end of the board 34, and two second electric wires 39 are connected to the male screwing portion 38. The fifth electrical contacts 42 are electrically connected to the second electric wires 39, respectively.

A fourth electrical contact 46 is disposed at the bottom of the male screwing portion 38, and the position thereof corresponds to the third electrical contact 44 of the female screwing portion 26 to be screwed into the female screwing portion 26 at the male screwing portion 38. Turn on when there is no need to use wire bonding.

The bottom end of the lamp cover 18 is joined to the front end of the upper lamp cup 32 to cover the LED module 16. The manner of engagement herein can be carried out in any manner known to those skilled in the art. For example, as shown, the inner side wall of the front end of the upper cup 32 is provided with a female thread 48, and the outer side wall of the bottom end of the lamp cover 18 A male thread 50 is provided to engage the shade 18 with the upper cup 32 by screwing the male thread 50 and the female thread 48 together.

Furthermore, a limiting ring 52 is protruded from the inner surface of the upper lamp cup 32. The inner surface of the lamp cover 18 is provided with a receiving groove 54 for positioning on the three-dimensional substrate when the bottom end of the lamp cover 18 is engaged with the front end of the upper lamp cup 32. The second circuit board 34 at the bottom of the 33 is received in the accommodating groove 54 and abuts against the limiting ring 52 to form a good positioning.

In addition, since the number of the LED dies 36 in the present invention is large, the generated thermal energy is large, and the LED is easily worn out due to overheating. Therefore, in order to increase the heat dissipation effect of the LED bulb structure of the present invention, the lower lamp cup 12 may be provided with plural numbers. The first heat dissipation fins 13 may also extend to the outer casing of the upper lamp cup 32 to increase the heat dissipation area.

In the LED bulb structure of the present invention, when the LED die 36 fails, the second circuit board 34 on which the LED die 36 is mounted can be replaced by disassembling the lamp cover 18 and the upper lamp cup 32. As shown in Figure 4. When it is determined that the electronic component 28 is malfunctioning, the drive screw module 14 can be taken out and replaced by disassembling the male screw portion 38 and the female screw portion 26, as shown in FIG. Therefore, it can be appropriately replaced when the LED die 36 or the electronic component 28 fails, without discarding the entire LED bulb structure, which can reduce unnecessary waste and achieve environmental and economic effects.

Please refer to FIG. 6, which is a schematic diagram of an embodiment of a desk lamp incorporating the LED bulb structure of the present invention. As shown, the desk lamp 56 primarily includes a socket 58 and the LED bulb structure 10 of the present invention described above. A bulb holder 62 is disposed above the socket 58 for engagement with the power connector 20 of the LED bulb structure 10 of the present invention. The bulb holder 62 is recessed and has a thread on the inner wall that conforms to the power connector 20 to The power connector 20 is screwed. In order to dissipate excess heat energy more effectively, the second heat sink fin 60 is also disposed on the outer casing of the lamp holder 58 to increase the heat dissipation area.

In summary, the LED bulb structure provided by the present invention not only sets the LED dies in multiple directions of the three-dimensional substrate, increases the illuminating angle, enhances the illumination brightness, but also sets the number of heat dissipating fins on the lamp cup. The heat energy generated by the plurality of LED dies is dissipated, and the thermal energy consumption caused by the aggregation of the LED dies is prevented from damaging the life of the LED dies; in addition, the LED bulb structure of the present invention is easy to disassemble and easy to replace, and when any component is damaged, It is necessary to replace the LED bulbs in a complete group, which is both energy-saving and environmentally friendly.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any changes or modifications of the features and spirits of the present invention should be included in the scope of the present invention.

10‧‧‧LED bulb structure

12‧‧‧ Lower light cup

13‧‧‧First heat sink fin

14‧‧‧Drive Circuit Module

16‧‧‧LED module

18‧‧‧shade

20‧‧‧Power connector

22‧‧‧First electrical contact

23‧‧‧First wire

24‧‧‧First board

26‧‧‧ Female screw joint

28‧‧‧Electronic components

30‧‧‧Second electrical contacts

32‧‧‧Upper light cup

33‧‧‧Three-dimensional substrate

34‧‧‧Second circuit board

36‧‧‧LED dies

37‧‧‧film

38‧‧‧Male screw joint

39‧‧‧second wire

40‧‧‧ slotted

42‧‧‧ fifth electrical contact

44‧‧‧ Third electrical contact

46‧‧‧4th electrical contact

48‧‧‧Female thread

50‧‧‧ male thread

52‧‧‧ Limit ring

54‧‧‧ accommodating slots

56‧‧‧ lamps

58‧‧‧ lamp holder

60‧‧‧Second heat sink fins

62‧‧‧ bulb holder

Figure 1 is a cross-sectional view showing the structure of an LED bulb of the present invention.

Figure 2 is an exploded cross-sectional view showing the structure of the LED bulb of the present invention.

Fig. 3 is an exploded perspective view showing the structure of the LED light bulb of the present invention.

Fig. 4 is a schematic view showing the replacement of the second circuit board on which the LED die is mounted by disassembling the lamp cover and the upper lamp cup when the LED die in the LED lamp structure of the present invention fails.

Fig. 5 is a schematic view showing the replacement of the driving circuit module by replacing the male screwing portion and the female screwing portion when the electronic component in the LED light bulb structure of the present invention is broken.

Fig. 6 is a schematic view showing an embodiment of a desk lamp incorporating a lamp bulb structure of the present invention in combination with a lamp holder.

10‧‧‧LED bulb structure

12‧‧‧ Lower light cup

13‧‧‧First heat sink fin

14‧‧‧Drive Circuit Module

16‧‧‧LED module

18‧‧‧shade

20‧‧‧Power connector

22‧‧‧First electrical contact

23‧‧‧First wire

24‧‧‧First board

26‧‧‧ Female screw joint

28‧‧‧Electronic components

30‧‧‧Second electrical contacts

32‧‧‧Upper light cup

33‧‧‧Three-dimensional substrate

34‧‧‧Second circuit board

36‧‧‧LED dies

37‧‧‧film

39‧‧‧second wire

38‧‧‧Male screw joint

42‧‧‧ fifth electrical contact

44‧‧‧ Third electrical contact

46‧‧‧4th electrical contact

Claims (11)

An LED light bulb structure includes: an LED module comprising an upper light cup and a three-dimensional substrate, wherein the three-dimensional substrate is disposed in the upper light cup, and a plurality of LED crystals are respectively disposed on the plurality of surfaces of the three-dimensional substrate a first bonding portion is disposed on the bottom of the LED module; a driving circuit module is disposed in the lower lamp cup, and the driving circuit module is provided with a second bonding portion that is engaged with the first bonding portion To form an electrical connection; and a lamp cover that is disposed on the LED module. The LED light bulb structure of claim 1, wherein the driving circuit module comprises: a first circuit board having the second joint portion disposed thereon, and second electrical contacts at the bottom; and at least one electron The component is disposed on the first circuit board and is disposed around the outer periphery of the second joint. The LED light bulb structure of claim 2, wherein a bottom of the lower light cup is provided with a power connector, the power connector is provided with a first electrical contact, and the first electrical contact is connected with two first wires. The second electrical contacts are respectively connected to the first wires. The LED light bulb structure of claim 1, wherein the LED module further comprises a plurality of second circuit boards respectively disposed on a plurality of surfaces of the three-dimensional substrate, wherein the LED chips are disposed on the second circuit boards . The LED light bulb structure of claim 2, wherein the first circuit board is further provided with a third electrical contact, and the bottom of the first joint of the LED module is further provided with a The fourth electrical contact is electrically connected to the fourth electrical contact when the first bonding portion is bonded to the second bonding portion. The LED light bulb structure of claim 5, wherein the third electrical contact is disposed in the second joint. The LED light bulb structure of claim 1, wherein the inner side wall of the front end of the upper light cup is provided with a female thread, and the outer side wall of the bottom end of the light cover is provided with a male thread to be screwed with the female thread. The LED light bulb structure of claim 3, wherein the power connector is a screw connector having an external thread, and the first electrical contact is disposed at a bottom end of the power connector. The LED light bulb structure of claim 4, wherein a limiting ring is protruded from an inner surface of the upper light cup, and an inner surface of the light cover is provided with a receiving groove at a bottom end of the light cover and the front end of the upper light cup The second circuit board is received in the receiving groove and abuts against the limiting ring. The LED light bulb structure of claim 1, wherein the outer side of the lower light cup is further provided with a plurality of first heat dissipation fins. The LED light bulb structure according to claim 10, further comprising a lamp holder, wherein the outer side further comprises a plurality of second heat dissipation fins.