TW201604473A - Large-angle light-emitting diode bulb - Google Patents

Abstract

A large-angle light-emitting diode bulb is disclosed. The large-angle light-emitting diode bulb comprises: a base; a mounting base having a top surface, a side surface and a bottom surface and disposed on the base, wherein the side surface connects the top surface and the bottom surface, and the bottom surface of the mounting base is connected to the base, wherein the angle between the side surface and the top surface of the mounting base is within the range of 90 to 135 degrees; at least one light-emitting unit disposed on the top surface of the mounting base; a fluorescence spherical shell disposed on the top surface of the mounting base for covering the light-emitting unit; and a lampshade disposed on the base for covering the fluorescence spherical shell, the light-emitting unit and the mounting base.

Description

Large angle light bulb

This invention relates to a light bulb, and more particularly to a high angle light exit bulb.

With the advancement of science and technology and the development of the people's livelihood economy, it will bring comfort and convenience to human beings. In addition to providing the necessary light in life at night, lighting fixtures also play an important role in daytime work and business activities. LEDs have the advantages of low energy consumption, long service life, no flickering of light sources, and low pollution. Therefore, it has become a trend to replace traditional tungsten filament bulbs with LED bulbs.

Since the assembly characteristics of the LED bulb itself are different from those of the conventional tungsten filament lamp, the LED is directly disposed on the circuit board, so the illumination angle cannot be 360 degrees like the conventional tungsten filament lamp, but can only be oriented away from the circuit board as the illumination plane. The direction of the board is illuminated, so the conventional LED bulb has a maximum illumination angle of only about 180 degrees.

In order to improve the problem of insufficient illumination range of conventional LED bulbs, there are techniques for providing a plurality of LED rings on their bases to provide multi-directional illumination. Therefore, although the illumination range of the LED bulb can be improved, the thermal energy generated by the LEDs is easily accumulated in the LED bulb due to the use of an excessive number of LEDs, and the thermal degeneration of the LEDs is not caused. Shorten component life while An efficient heat sink is also needed to achieve the heat dissipation effect, which actually increases the manufacturing cost of the bulb.

In view of the above-mentioned problems of the prior art, it is an object of the present invention to provide a large-angle light-emitting bulb to solve the disadvantage that the conventional LED bulb has an exit angle of less than 180 degrees.

In accordance with another aspect of the present invention, the present invention provides a high-angle light-emitting bulb that addresses the lack of heat dissipation of the LED bulb due to the use of an excessive number of LEDs.

In order to achieve the foregoing objective, the present invention provides a large-angle light-emitting bulb, and in an embodiment of the present invention, the large-angle light-emitting bulb of the present invention comprises: a base; a mounting base disposed on the base, wherein the base is mounted The utility model has an upper surface, a side surface and a lower surface, wherein the side surface is connected to the upper surface and the lower surface, wherein the lower surface of the mounting base is connected to the base, and the upper surface of the mounting base has an angle with the side surface, and the angle is between Between 90 degrees and 135 degrees; at least one light emitting unit is disposed on the upper surface of the mounting base; a fluorescent spherical shell is disposed on the upper surface of the mounting base to cover the light emitting unit; and a light cover is disposed On the base, it is used to cover the fluorescent spherical shell, the light emitting unit and the mounting base.

According to one aspect of the large-angle light-emitting bulb of the present invention, the mounting base and the base are integrally formed.

According to one aspect of the large-angle light-emitting bulb of the present invention, the light transmittance of the lamp cover is greater than 80%.

According to one aspect of the large-angle light-emitting bulb of the present invention, wherein the fluorescent spherical shell has an opening, the opening is in contact with the upper surface of the mounting base, and the area of the opening Less than the area of the upper surface.

According to one aspect of the large-angle light-emitting bulb of the present invention, the orthographic projection area of the lower surface of the mounting base on the base is greater than or equal to the orthographic projection area of the upper surface of the mounting base on the base.

According to another aspect of the large angle light-emitting bulb of the present invention, the vertical distance from the upper surface of the mounting base to the base is between 3/10 and 7/10 of the height of the lamp cover.

According to another aspect of the large-angle light-emitting bulb of the present invention, the mounting base is a columnar body and the upper surface is circular, the lamp cover is a spherical body, and the circumferential diameter of the upper surface of the mounting base and the maximum diameter of the lamp cover The ratio is less than 1/2.

According to still another aspect of the large-angle light-emitting bulb of the present invention, the mounting base is a columnar body and the upper surface is polygonal, the lampshade is a spherical body, and the distance from the farthest point in the upper surface of the mounting base is two. The ratio of the largest diameter to the lampshade is less than 1/2.

According to another embodiment of the large-angle light-emitting bulb of the present invention, the large-angle light-emitting bulb of the present invention further comprises at least one heat-dissipating fin, and the heat-dissipating fin is connected to the base.

According to another embodiment of the high-angle light-emitting bulb of the present invention, the heat-dissipating fin is integrally formed with the base.

According to another embodiment of the high angle light-emitting bulb of the present invention, the heat sink fins cover a portion of the light cover.

As described above, the high-angle light-emitting bulb according to the present invention may have one or more of the following advantages:

(1) The high-angle light-emitting bulb of the present invention is installed by installing a mounting base The seat, with the design of the mounting base and the configuration of the fluorescent spherical shell, can improve the light-emitting angle and solve the shortcomings of the traditional LED bulb with an angle of less than 180 degrees.

(2) The high-angle light-emitting bulb of the present invention can achieve the technical effect of improving the light-emitting angle of the LED bulb without using an excessive number of LEDs.

10‧‧‧Base

20‧‧‧Installation base

22‧‧‧ upper surface

24‧‧‧ side surface

26‧‧‧ Lower surface

30‧‧‧Lighting unit

40‧‧‧Fuel sphere shell

42‧‧‧ openings

50‧‧‧shade

D1‧‧‧ distance

H1‧‧‧ Height

Θ‧‧‧ angle

L1, L2‧‧‧ diameter

60‧‧‧heat fins

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic cross-sectional view showing a first preferred embodiment of the high-angle light-emitting bulb of the present invention.

Figure 2 is a perspective view of a first preferred embodiment of the high-angle light-emitting bulb of the present invention.

Figure 3 is an isometric view of a first preferred embodiment of the high angle light-emitting bulb of the present invention.

Fig. 4 is an isometric view showing the surface of the mounting base of the large-angle light-emitting bulb of the present invention in a quadrangular shape.

Figure 5 is a cross-sectional view showing a second preferred embodiment of the high-angle light-emitting bulb of the present invention.

Figure 6 is a perspective view of a second preferred embodiment of the high-angle light-emitting bulb of the present invention.

Figure 7 is an isometric view of a second preferred embodiment of the high angle light-emitting bulb of the present invention.

Please refer to FIG. 1 and FIG. 2 together. FIG. 1 is a cross-sectional view showing a first preferred embodiment of the high-angle light-emitting bulb of the present invention, and FIG. 2 is the first of the large-angle light-emitting bulb of the present invention. A perspective view of a preferred embodiment. As number 1 As shown in FIG. 2 and FIG. 2, the high-angle light-emitting bulb of the present invention includes a base 10, a mounting base 20 disposed on the base 10, at least one light emitting unit 30, a fluorescent globe 40, and a lamp cover 50. The mounting base 20 has an upper surface 22, a side surface 24 and a lower surface 26. The side surface 24 connects the upper surface 22 and the lower surface 26, and the lower surface 26 of the mounting base 20 connects the base 10. The light emitting unit 30 can be substantially a light emitting diode wafer, for example, disposed on the upper surface 22 of the mounting base 20. The fluorescent bulb 40 is disposed on the upper surface 22 of the mounting base 20 to cover the light emitting unit 30 such that the light emitted from the light emitting unit 30 passes through the fluorescent bulb 30 for wavelength conversion. The lamp cover 50 is disposed on the base 10 to cover the fluorescent spherical shell 40, the light emitting unit 30, and the mounting base 20. Wherein, the mounting base 20 and the base 10 are selectively integrally formed, which can save process cost and increase heat transfer rate. The light transmittance of the lamp cover 50 is greater than 80% to improve the brightness of the light bulb, and the material of the lamp cover 50 can be, for example, plastic, acrylic or glass, but is not limited thereto. It is worth mentioning that when the lampshade 50 is made of glass with a light transmittance of more than 96%, the light-emitting brightness is optimal; if a matte lamp cover 50 having a surface roughness of micrometers is selected, the effect of homogenizing the light can be achieved. soft.

As shown in FIGS. 1 and 2, the fluorescent spherical shell 40 has an opening 42 which is in contact with the upper surface 22 of the mounting base 20 and the area of the opening 42 is smaller than the area of the upper surface 22 (ie, the fluorescent sphere) The opening 42 of the casing 40 is located on the upper surface 22 of the mounting base 20) so that the fluorescent spherical shell 40 can be more easily and firmly fixed to the mounting base 20, and the fluorescent spherical shell 40 can be completely covered. The light emitting unit 30 on the upper surface 22 of the base 20 is mounted. However, the fluorescent globe 40 having an opening area larger than the upper surface 22 of the mounting base 20 may be disposed on the mounting base 20 according to user requirements. (not shown), that is, at this time, the opening 42 of the fluorescent spherical shell 40 is in contact with the side surface 24 of the mounting base 20 as long as the fluorescent spherical shell 40 completely covers the upper surface 22 of the mounting base 20. Light unit 30, which is the hair The scope of the Ming. The fluorescent spherical shell 40 can be, for example, a spherical shell coated with a fluorescent material or a spherical shell containing a fluorescent material itself, such that light passing through the fluorescent spherical shell 40 can be wavelength-transmitted by the properties of the fluorescent material. The conversion to change the wavelength and color of the light emitted by the bulb. For example, the fluorescent material can, for example, convert light emitted by a blue LED or an ultraviolet LED into white light. For example, a blue LED is used to emit blue light, and then the blue light is absorbed by the fluorescent material to be converted into yellow light, and the blue light and the yellow light are further mixed to generate white light.

Further, as shown in FIGS. 1 and 2, the upper surface 22 of the mounting base 20 has an included angle θ with the side surface 24, and the angle range of the included angle θ is approximately between 90 degrees and 135 degrees. In this way, the light emitted by the light-emitting unit 30 after being emitted by the fluorescent bulb 40 and wavelength-converted is not blocked by the mounting base 20 or the base 10, so that the light-emitting angle of the bulb of the present invention is greater than 180. Degree, even up to about 270 degrees, does achieve the purpose of light out of the bulb. On the other hand, if the angle θ is greater than 135 degrees, the side surface 24 of the mounting base 20 blocks the light emitted by the phosphor sphere shell 40 after wavelength conversion, and the light source can not be lighted at a large angle, and the amount of light emitted may also be Loss.

In one aspect of the high-angle light-emitting bulb of the present invention, the orthographic projection area of the lower surface 26 of the mounting base 20 on the base 10 can be greater than or equal to the orthographic projection of the upper surface 22 of the mounting base 20 on the base 10. The area, preferably, the orthographic projection area of the lower surface 26 of the mounting base 20 on the base 10 is greater than the orthographic projection area of the upper surface 22 of the mounting base 20 on the base 10, that is, the upper surface 22 and the side surface 24 The angle θ is greater than 90 degrees. For example, as shown in FIGS. 1 and 2, the angle θ between the upper surface 22 of the mounting base 20 and the side surface 24 may be, for example, 115 degrees, and the lower surface 26 of the mounting base 20 is The orthographic projection area on the base 10 is larger than the orthographic projection area of the upper surface 22 of the mounting base 20 on the base 10. As a result, the contact surface of the lower surface 26 of the mounting base 20 and the base 10 is larger, and thus the base 10 is The bonding can be relatively stable, and the reliability of the bulb is improved. If the area of the lower surface 26 of the mounting base 20 is smaller than the area of the upper surface 22, the mounting base 20 is susceptible to external force due to the small contact area between the mounting base 20 and the base 10. Causes dumping or breaking, poor bearing capacity, affecting the overall reliability of the bulb. In this aspect, due to the improved design of the angle θ and the orthographic projection area of the lower surface 26 and the upper surface 22 on the base 10, the mounting base 20 can be prevented from blocking the light, and the light exit angle of the light bulb can be improved, thereby achieving a large angle of light output. The purpose of the bulb can also improve the reliability of the bulb.

In another aspect of the high angle light-emitting bulb of the present invention, the vertical distance D1 of the upper surface 22 of the mounting base 20 to the base 10 is between 3/10 and 7/10 of the height H1 of the globe 50. In detail, since the function of the mounting base 20 is to raise the height of the light-emitting unit 30 to increase the light-emitting angle of the light bulb, it has been found by the applicant of the present invention that the distance D1 is 3/10 of the height H1 of the globe 50. By 7/10, the light exit angle of the bulb is optimal. If the distance D1 is less than 3/10 of the height H1 of the lamp cover 50, since the light is more easily blocked by the mounting base 20 and the base 10, the distance between the light-emitting unit 30 and the lamp cover 50 is too long, except that the light-emitting angle of the light bulb is not good. If the distance D1 is greater than 7/10 of the height H1 of the lampshade 50, the space inside the lampshade 50 is too small, except that the overall light bulb is not aesthetically pleasing. The space for causing air convection is insufficient, and the effect of good heat dissipation cannot be achieved, resulting in a decrease in component life.

In still another aspect of the large-angle light-emitting bulb of the present invention, the mounting base 20 is a columnar body and the upper surface 22 is circular, the lamp cover 50 is a spherical body, and the circumference of the upper surface 22 of the mounting base 20 is mounted. The ratio of the diameter to the maximum diameter of the globe 50 is less than 1/2. Please refer to FIG. 3, which is the first of the large-angle light-emitting bulbs of the present invention. An isometric view of the preferred embodiment. As shown in FIG. 3, the circumferential diameter of the upper surface 22 of the mounting base 20 is indicated by L1, and the maximum diameter of the lamp cover 50 is represented by L2, and in still another aspect of the large-angle light-emitting bulb of the present invention, The ratio of L1 to L2 may be, for example, less than 1/2, and more preferably, the ratio of L1 to L2 may be, for example, 1/4 or less. In the example where the ratio of L1 to L2 is 1/4, not only can there be sufficient thermal convection space in the lamp cover 50, but the light-emitting unit 30 can be seen from the outside of the lamp cover 50 even after being refracted and scattered by the lamp cover 50. The large-angle light-emitting bulb of the present invention is still the illumination of the point source. On the other hand, if the circumferential diameter L1 of the upper surface 22 of the mounting base 20 is too large, not only the heat dissipation space is reduced, but also the light output of the light-emitting element 30 is directly blocked, which is disadvantageous for the realization of the large-angle light-emitting bulb.

In still another aspect of the large-angle light-emitting bulb of the present invention, the mounting base 20 is a columnar body and the upper surface 22 is polygonal, and the lamp cover 50 is a spherical body. For example, as shown in FIG. 4, the upper surface 22 of the mounting base 20 can be, for example, quadrangular, and the distance from the farthest point in the upper surface 22 of the mounting base 20 (ie, in two diagonals) The ratio of the diagonal length of the longer length to the maximum diameter of the globe 50 may be, for example, less than 1/2, more preferably 1/4 or less. As in the above-mentioned manner, the upper surface 22 of the mounting base 20 has a circular shape. In the polygonal surface of the upper surface 22 of the mounting base 20, when the ratio of L1 to L2 is 1/4, the point source illumination can be achieved. The purpose is to provide sufficient thermal convection space within the lampshade 50.

5 is a schematic cross-sectional view showing a second preferred embodiment of the high-angle light-emitting bulb of the present invention; and FIG. 6 is a perspective view showing a second preferred embodiment of the high-angle light-emitting bulb of the present invention; and FIG. It is an isometric view of a second preferred embodiment of the high angle light-emitting bulb of the present invention. Referring to FIGS. 5-7, in the second preferred embodiment of the large-angle light-emitting bulb of the present invention, the large-angle light-emitting bulb of the present invention further includes at least one heat-dissipating fin 60, wherein the heat-dissipating fins 60 are connected to bottom Block 10. The second preferred embodiment of the present invention differs from the first preferred embodiment only in that the second preferred embodiment is provided with heat dissipation fins 60 for connecting the base 10 to improve the efficiency of heat dissipation of the bulb. The heat sink fins 60 and the base 10 are selectively integrally formed according to actual needs. Moreover, as shown in FIG. 7, the user can set the appearance of the heat dissipation fins 60 into a lotus shape according to the heat dissipation requirement of the light bulb, and extend and cover a part of the light cover 50, thereby increasing the heat dissipation area. The heat sink fin 60 has a sheet-like appearance and does not affect the light exit angle of the bulb. The material of the heat dissipation fins 60 may be, for example, aluminum, aluminum alloy or copper, but is not limited thereto.

As described above, in the second preferred embodiment of the present invention, the heat dissipation fins 60 are disposed on the base 10 to improve the heat dissipation efficiency of the bulb. In addition, the user can also use materials with high heat transfer coefficient according to actual needs (for example, A material having a conductivity greater than 10 W/mK, such as aluminum, copper, or the like, is formed into the base 10 to achieve heat dissipation by the high heat dissipation efficiency of the base 10 itself.

It is worth mentioning that the heat dissipation fins 60 can also be disposed around the mounting base 20 (not shown) to improve the efficiency of heat dissipation inside the lamp cover. The heat sink fins 60 and the mounting base 20 are selectively integrally formed according to actual needs. In addition, since the heat dissipation fin 60 has a sheet-like appearance and does not affect the light-emitting angle of the bulb, it can also improve the overall heat dissipation efficiency without shielding.

In summary, the large-angle light-emitting bulb of the present invention can improve the light-emitting angle by improving the appearance of the mounting base and the fluorescent spherical shell, and solve the disadvantage that the traditional LED bulb has an exit angle of less than 180 degrees, and The invention can increase the light-emitting angle of the bulb without using an excessive number of light-emitting units, and is practical and commercially convenient. In addition, since the present invention can further provide heat dissipating fins on the base, the present invention can provide an illuminating luminaire with a large light exiting angle under the condition of good heat dissipation efficiency.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

10‧‧‧Base

20‧‧‧Installation base

22‧‧‧ upper surface

24‧‧‧ side surface

26‧‧‧ Lower surface

30‧‧‧Lighting unit

40‧‧‧Fuel sphere shell

42‧‧‧ openings

50‧‧‧shade

D1‧‧‧ distance

H1‧‧‧ Height

Θ‧‧‧ angle

Claims (10)

A large-angle light-emitting bulb includes: a base; a mounting base disposed on the base; a light-emitting component disposed on the mounting base and having a mounting height relative to the base, the light-emitting component including at least one a light-emitting unit and a wavelength conversion layer, the wavelength conversion layer is disposed on the light-emitting unit; and a light cover disposed on the base for covering the light-emitting element and the mounting base, wherein a part of the light emitted by the light-emitting element A bottom edge of the light bulb that can be emitted is unobstructed downward, and the light angle of the large-angle light-emitting bulb is greater than 180 degrees. The large-angle light-emitting bulb according to claim 1, further comprising a plurality of heat-dissipating fins, wherein the heat-dissipating fins are connected to the base. The large-angle light-emitting bulb of claim 1, wherein the connecting line of the light-emitting element and the bottom edge of the light-emitting cover has an angle with the normal, and the angle is between 0 and 45 degrees. The large-angle light-emitting bulb according to claim 1, further comprising a plurality of heat-dissipating fins, wherein the heat-dissipating fin rings are disposed around the base. The large-angle light-emitting bulb of claim 1, wherein the lamp cover has a lamp cover height relative to the bottom edge of the lamp cover, and the installation height is between 3/10 and 7/10 of the height of the lamp cover. . A large angle light bulb, including: a mounting base is disposed on the base; a light emitting component is disposed on the mounting base, the light emitting component includes at least one light emitting unit and a wavelength conversion layer, and the wavelength conversion layer covers the light emitting unit And a light cover disposed on the base to cover the light-emitting component and the mounting base, wherein a portion of the light emitted by the light-emitting component reaches the bottom edge of the light-emitting cover of the light-emitting device without hindrance, the light-emitting component The mounting cover has a mounting height relative to the base, and the cover has a shade height relative to the bottom edge of the shade that is between 3/10 and 7/10 of the height of the shade. The large-angle light-emitting bulb according to claim 6, further comprising a plurality of heat-dissipating fins, wherein the heat-dissipating fins are connected to the base. The large-angle light-emitting bulb of claim 6, wherein the light-emitting element and the bottom edge of the light-emitting cover have an angle with the normal, the angle being between 0 and 45 degrees. The large-angle light-emitting bulb according to claim 6, further comprising a plurality of heat-dissipating fins, wherein the heat-dissipating fin rings are disposed around the base. The large-angle light-emitting bulb of claim 6, wherein the light-emitting element emits a white light.