TWM467798U - Wide-angle type LED light bulb - Google Patents

Description

Wide-angle light-emitting diode bulb

The present invention relates to a wide-angle type light-emitting diode bulb, and more particularly to an omnidirectional wide-angle type light-emitting diode bulb which is improved in illumination by providing a light-emitting diode on both sides of the substrate.

In 1962, General Electric's Nick Holonyak Jr. developed the first practical application of Light Emitting Diode (LED), and with the ever-increasing technology, related lighting Diode applications should also emerge. Under the premise of the pursuit of sustainable development by human beings today, the low power consumption of LEDs and the long-lasting illumination have gradually replaced the indicators used in daily life for lighting or various electrical equipment. Or use of light sources. What's more, the development of light-emitting diodes towards multi-color and high brightness has been applied to large outdoor display billboards or traffic signs.

However, compared with the incandescent lamp, the light emitted by the light-emitting diode has directivity, and the light output gradually decreases with the light-emitting angle, so that the light-emitting diode bulb always has uneven illumination. Although many conventional techniques have been attempted to design various improvements in an attempt to achieve omnidirectional illumination such as incandescent lamps, such as increasing the power of the LED to compensate for insufficient illumination, such a design must be matched with a suitable heat dissipation design to avoid Luminous two The polar bulb is damaged due to poor heat dissipation. On the other hand, other conventional techniques often use complicated structural design to improve the illumination unevenness of the light-emitting diode bulb, but this improvement method is not beneficial to the development of related industries, and only causes an increase in cost. Therefore, there is a need for a new type of light-emitting diode bulb that does not require a complicated structural design to completely improve the problems caused by the uneven illumination of the light-emitting diode bulb.

In view of this, the present invention proposes a wide-angle type light-emitting diode bulb with omnidirectional illumination to effectively overcome the above problems.

The main purpose of this creation is to provide a wide-angle light-emitting diode bulb, which can thoroughly improve the illumination unevenness and its derivative problems of the conventional light-emitting diode bulb through a simple structural design.

In order to achieve the above object, the present invention provides a wide-angle LED light bulb, comprising: a lamp cap; a heat sink can be disposed on the lamp cap; a light frame can be disposed on the top of the heat sink; The unit can be disposed on the surface of the lamp holder and electrically connected to the lamp cap, and the light-emitting unit can be composed of a substrate and a light-emitting diode; and a lamp cover can be disposed on the lamp frame and outside the light-emitting unit .

In the above-mentioned wide-angle type light-emitting diode bulb, as long as the problem of improving the illumination unevenness of the light-emitting diode bulb can be achieved, the present invention does not particularly limit the relative arrangement of the substrate and the light-emitting diode wafer. For example, in one aspect of the present invention, the substrate can be a single-layer substrate, and the light-emitting diodes can be disposed on both sides of the single-layer substrate. In this creation In another aspect, the substrate can be a two-layer substrate, and the light-emitting diode can be disposed on an outer side of the two-layer substrate. In another aspect of the present invention, the two-layer substrate may be formed by combining two pairs of single-layer substrates by a bonding layer or a mechanical structure, wherein the bonding layer may be a resin bonding agent. The metal bond, or the ceramic bond, or the like, or a combination thereof, in addition, the mechanical structure may be a screw fixing, a combination cassette, or the like, and the present creation is not limited thereto. In another aspect of the present invention, the single-layer substrate or the two-layer substrate may have a plurality of through holes, so that the light-emitting diodes on the outer side of the single-layer substrate or the two-layer substrate can be made through the through holes. Electrically connected.

In the above-mentioned wide-angle type light-emitting diode bulb, as long as the problem of improving the illumination unevenness of the light-emitting diode bulb can be achieved, the present invention does not particularly limit the relative arrangement of the light-emitting unit and the light fixture. For example, in one aspect of the present invention, the light emitting unit can be disposed at the top of the light fixture, and the light emitting unit can be perpendicular to the light fixture, so that the light emitting unit can simultaneously generate a direction away from the heat sink seat and Light is directed toward the heat sink. In another aspect of the present invention, the light emitting unit can be disposed on the side of the light fixture, and the light emitting unit can be parallel to the light fixture, thereby enabling the light emitting unit to simultaneously generate a direction toward the shade and a back cover. Illumination in one direction.

In the above-mentioned wide-angle type light-emitting diode bulb, the number of the substrate and the light-emitting diode chip of the light-emitting unit is not particularly limited as long as the illumination unevenness problem of the light-emitting diode bulb can be improved. For example, the light emitting unit may be composed of 1 to 10 of the substrates; The light emitting diode may have one to 20 light emitting diode chips, and the light emitting diode may be disposed on the surface of the substrate. In addition, the present invention does not particularly limit the type of the substrate. Preferably, the substrate can be a transparent substrate to obtain an omnidirectional illumination of the LED bulb. On the other hand, as long as the illuminance of the light-emitting diode bulb can be improved, the material of the substrate is not particularly limited in the present creation. For example, in one aspect of the present invention, the substrate can be a glass substrate, a ceramic substrate (eg, a sapphire substrate), or an aluminum substrate. Furthermore, as long as the light required for the light-emitting diode bulb can be provided, the present invention does not particularly limit the wavelength of the light emitted by the LED chip, and those skilled in the art can select the light-emitting diode according to the needs thereof. The wavelength range of light emitted by the wafer, for example, in one aspect of the present invention, the wide-angle LED chip can emit light having a wavelength between 200 nm and 800 nm. In addition, the light-emitting diode chip may include a sealing resin containing phosphor powder, thereby stimulating the phosphor powder to generate fluorescence by the light emitted by the light-emitting diode chips. A mixed wavelength of light, but this creation is not limited to this. In one aspect of the present invention, the light-emitting unit of the wide-angle LED can be a transparent glass single-layer substrate, and 10 light-emitting diodes of 1 watt are respectively arranged on the glass single-layer substrate. On both sides, in addition, the substrate can be perpendicular to the lamp holder, so that the light-emitting unit can simultaneously generate a distance of 10 watts of light away from the direction of the heat sink and a direction toward the heat sink. In another aspect of the present invention, the light-emitting unit of the wide-angle LED may be a transparent sapphire single-layer substrate, and 20 0.5 watt LEDs are respectively arranged on the sapphire monolayer. On both sides of the substrate, in addition, the substrate can be perpendicular to the lamp holder, so that the light-emitting unit can simultaneously A 10 watt light is emitted away from the direction of the heat sink and toward the heat sink. In another aspect of the present invention, the light-emitting unit of the wide-angle LED can be a two-layer substrate composed of two transparent sapphire substrates, and 100 LED watt LEDs are arranged respectively. The two sides of the sapphire two-layer substrate, in addition, the substrate can be perpendicular to the lamp holder, so that the light-emitting unit can simultaneously generate a distance of 10 watts of light away from the direction of the heat sink and a direction toward the heat sink. In another aspect of the present invention, the light-emitting unit of the wide-angle LED can be composed of an opaque substrate (for example, an aluminum substrate) as a single-layer substrate emitting light on both sides, or two opaque layers. The substrate is composed of a two-layer substrate which emits light on both sides, or a multi-layer substrate in which a plurality of opaque substrates are formed to emit light on both sides, and the creation is not limited thereto. Furthermore, as long as the light emitting diodes are properly arranged on the surface of the substrate, and the substrate can be easily disposed on the lamp holder, those skilled in the art can select a suitable substrate shape according to their needs. Limited. For example, in one aspect of the present invention, the shape of the substrate may be square, rectangular, elliptical, circular, or polygonal, but the creation is not limited thereto. Preferably, in one embodiment of the present invention, the shape of the substrate may be circular.

In the above wide-angle type light-emitting diode bulb of the present invention, the shape of the lamp holder is not particularly limited as long as it can improve the illumination of the light-emitting diode bulb. For example, in one aspect of the present invention, the side of the lamp holder may be a curved outer shape, and the curved surface may be a columnar structure, a tapered structure, or a branch structure having a plurality of extensions. In one embodiment of the present invention, the light stand can be a columnar structure. In another specific aspect of the creation, the lamp holder can be a tapered structure, and the cross-sectional area of the bottom portion is It is qualitatively larger than the cross-sectional area of the top. In another aspect of the present invention, the lamp holder can be a branch structure having a plurality of extensions for setting a plurality of illumination units to improve illumination and illumination angle of the LED bulb. Furthermore, the surface of the lamp holder can be a reflecting surface, thereby achieving the purpose of improving the illumination of the LED bulb. The material of the lamp holder is also not particularly limited as long as it can effectively transmit the waste heat generated by the light-emitting unit to the heat sink. In one aspect of the present invention, the lamp holder can be made of copper, aluminum, silver, chromium, zirconium, or alloys thereof. In one embodiment of the present invention, the lamp holder can be made of aluminum, thereby simultaneously reflecting the light to improve illumination and high thermal conductivity.

In the above-described wide-angle type light-emitting diode bulb, the material of the heat sink is not particularly limited as long as it can effectively conduct waste heat generated by the light-emitting unit. In one aspect of the present invention, the heat sink can be a metal, a ceramic, or a heat conductive plastic, wherein the metal can be at least one selected from the group consisting of copper, aluminum, silver, chromium, zirconium, and alloys thereof. Group; the ceramic may be selected from the group consisting of alumina, aluminum nitride, and mixtures thereof. In one preferred aspect of the present invention, the heat sink can be made of aluminum. In addition, in order to optimize the waste heat generated by the conductive light-emitting unit to the heat sink, a person skilled in the art can also integrally form the heat-dissipating body and the lamp holder.

Furthermore, since the heat generated by the light-emitting unit of the light-emitting diode bulb is mainly conduction heat, in the above-mentioned wide-angle type light-emitting diode bulb, the heat sink further includes a black body radiation layer. The surface of the heat sink is coated to improve the heat dissipation efficiency of the light emitting diode bulb. In one aspect of the present invention, the black body radiation layer can be a distorted amorphous carbon, such as graphite, diamond, diamond-like carbon, and the like. In order to enable the black body radiation layer to function as a fast heat dissipation function, and based on the total number of sp ³ and sp ² bonds, the number of sp ³ bonds of the twisted amorphous carbon is 50 to 100%. Preferably, the black body radiation layer can be a type of drill carbon.

In addition, since the black body radiation layer has the characteristics of high thermal conductivity and high thermal emissivity, it can be achieved by coating only on the surface of the heat sink. Therefore, in one aspect of the present invention, the black body radiation layer may have a thickness of 0.1 μm to 10 μm, preferably 0.5 μm to 5 μm, more preferably 2 μm. Furthermore, the surface of the heat sink can be processed in advance by a method such as sand blasting, so that the surface of the heat sink forms a roughened surface, so that the black body radiation layer coated on the surface of the heat sink can have A nanometer rough surface. Accordingly, the black body radiation layer can accelerate the removal of the waste heat generated by the light-emitting diode bulb by the heat release of the tip, thereby improving the illumination of the light-emitting diode bulb and improving the heat dissipation problem.

In the above-mentioned wide-angle type light-emitting diode bulb, various ways of electrically connecting the light-emitting unit and the lamp cap can be used as long as the light-emitting unit can be electrically connected to the lamp cap without causing short circuit or leakage. The problem is not limited to this creation. In more detail, the light emitting unit is electrically connected to the lamp cap through a line disposed in the lamp holder and the heat sink.

In the above wide-angle LED light bulb, the light cover can be a light-transmissive glass or a plastic outer casing. In addition, the surface of the lamp cover can also After the atomization treatment, the effect of soft light is achieved, and the creation is not particularly limited.

1,1',2,3,4,5‧‧‧ wide-angle LED bulb

11,11’,21,31,41,51‧‧‧light cap

12,12’,22,32,42,52‧‧‧heating seat

13,13’,23,33,43,53‧‧‧light stand

14,14',24,34,44,54‧‧‧Lighting unit

141,141',241,341,441,541‧‧‧substrate

142, 142', 242, 342, 442, 542 ‧ ‧ LEDs

15,15’,25,35,45,55‧‧‧shade

443‧‧‧bonding layer

531‧‧‧Extension

1A is a perspective view of a wide-angle type light-emitting diode bulb of the first embodiment of the present invention.

1B is a perspective view of a wide-angle type light-emitting diode bulb of the second embodiment of the present invention.

2 is a cross-sectional view of a wide-angle type light-emitting diode bulb of the third embodiment of the present invention.

3 is a perspective view of a wide-angle type light-emitting diode bulb of the fourth embodiment of the present invention.

Fig. 4 is a cross-sectional view showing the wide-angle type light-emitting diode of the fifth embodiment of the present invention.

Fig. 5 is a perspective view showing a wide-angle type light-emitting diode bulb of the sixth embodiment of the present invention.

The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily appreciate other advantages and effects of the present invention from the disclosure herein. The present invention can also be implemented or applied by various other specific embodiments. The details of the present specification can also be modified and changed without departing from the spirit of the present invention.

In the embodiment of the present invention, the drawings are simplified Figure. However, the illustrations only show the components related to the creation, and the components displayed are not in the actual implementation. The actual number of components, the shape and the like are designed as a selective design, and the component layout The pattern may be more complicated.

Example 1

Please refer to FIG. 1A , which is a perspective view of a wide-angle LED bulb 1 of the embodiment 1 , which includes a lamp cap 11 , a heat sink 12 disposed on the lamp cap 11 , and a lamp holder 13 . The light-emitting unit 14 is disposed on the surface of the lamp holder 13 and electrically connected to the lamp cap 11, and the light-emitting unit 14 is composed of a substrate 141 and a light-emitting diode 142; And a light cover 15 disposed on the outer side of the light frame 13 and the light emitting unit 14 , wherein the light emitting unit 14 is disposed on the top of the light frame 13 and perpendicular to the light frame by a fixing member (not shown) 13; the substrate 141 is a single-layer and transparent sapphire substrate; the light-emitting diode 142 is composed of 10 1-watt LED chips emitting light of 200 nm to 800 nm, and the light-emitting diode The 142 is disposed on the surface of the substrate 141, wherein the four LED chips are located on one side of the substrate 141 connected to the lamp holder 13 (ie, facing the heat sink 12), and the remaining six LED chips are disposed. It is then located on the opposite side of the substrate 141 (ie, facing away from the heat sink 12). Furthermore, in the first embodiment, the lamp holder 13 has a columnar structure and the surface is a reflecting surface to improve the illumination of the wide-angle LED bulb 1. The lamp holder 13 and the heat sink 12 are made of aluminum to facilitate conduction of heat generated by the LED 142 to the heat sink 12 . In addition, a person skilled in the art can further provide a black body spoke on the surface of the heat sink 12 according to the needs thereof. A shot layer (not shown) is used to improve the heat dissipation efficiency of the wide-angle LED bulb 1.

Example 2

Referring to Fig. 1B, a perspective view of a wide-angle type light-emitting diode bulb 1' of the second embodiment is shown. The structure of Embodiment 2 is substantially similar to that of Embodiment 1, except that the substrate 141' of Embodiment 2 is a multi-layer substrate in which two sapphire substrates are formed to emit light on both sides of a single layer. Therefore, Embodiment 2 can provide more by providing A plurality of light-emitting units 14' are used to increase the illumination of the wide-angle type light-emitting diode bulb 1'.

Accordingly, the LED bulb 1' of the embodiment 2 includes: a cap 11'; a heat sink 12' is disposed on the cap 11'; a lamp holder 13' is disposed on the lamp cap 13' a light-emitting unit 12' is disposed on the surface of the lamp holder 13' and electrically connected to the lamp cap 11', and the light-emitting unit 14' is composed of a substrate 141' and a light-emitting diode The cover 142' is configured to be disposed on the lamp holder 13' and the outside of the light-emitting unit 14'. The substrate 141' is a multi-layer substrate composed of two sapphire substrates and a single layer of light-emitting on both sides. And the substrates 141 ′ are perpendicular to the lamp holder 23 ; the substrates 141 ′ each independently contain 10 0.5 watt LED chips emitting light of 200 nm to 800 nm, and the LEDs The 142' is disposed on the surface of the substrate 141', wherein the eight LED chips are also located on one side of the substrate 141' connected to the lamp holder 13' (ie, toward the heat sink 12'), and the remaining 12 The LED chips are located on opposite sides of the substrate 141' (ie, facing away from the heat sink 12')Furthermore, in the second embodiment, the lamp holder 13' is a column. The structure is a reflective surface to improve the illumination of the wide-angle LED bulb 1'. The lamp holder 13' and the heat sink 12' are made of aluminum to facilitate conduction of heat generated by the light-emitting diode 142' to the heat sink 12'. In addition, a person skilled in the art can provide a black body radiation layer (not shown) on the surface of the heat sink 12' to improve the heat dissipation efficiency of the wide-angle LED bulb 1'.

However, in the above embodiment 2, the substrate 141' may be a multi-layer substrate in which a plurality of single-layer light-emitting layers are formed by using a sapphire substrate, and an aluminum substrate may be used to form a plurality of double-layer substrates on both sides of the light-emitting layer. Not limited to this.

Example 3

Please refer to FIG. 3, which is a cross-sectional view of the wide-angle LED bulb 2 of Embodiment 3. The structure of Embodiment 3 is substantially similar to that of Embodiment 1, except that the lamp holder 23 of Embodiment 3 has a tapered structure, and the cross-sectional area of the bottom portion is substantially larger than the cross-sectional area of the top portion. Therefore, the embodiment The lamp holder 23 of 3 can provide more reflective surfaces to enhance the illumination of the wide-angle LED bulb 2.

Accordingly, the light-emitting diode bulb 2 of the embodiment 3 includes: a lamp cap 21; a heat sink 22 is disposed on the lamp cap 21; a light frame 23 is disposed on the top of the heat sink 22; An illumination unit 24 is disposed on the surface of the lamp holder 23 and electrically connected to the lamp cap 21, and the illumination unit 24 is composed of a substrate 241 and a light-emitting diode 242; and a lamp cover 25, a cover Provided on the outside of the lamp holder 23 and the light-emitting unit 24, wherein the hair The light unit 24 is disposed on the top of the lamp holder 23 and perpendicular to the lamp holder 23 by a fixing member (not shown); the substrate 241 is a single-layer and transparent sapphire substrate; the light-emitting diode 242 is 10 watts of light-emitting diode chips having an emission wavelength of 200 nm to 800 nm, and a light-emitting diode 242 disposed on the surface of the substrate 241, wherein 4 LED substrates are also located on the substrate 241 is connected to one side of the lamp holder 23 (ie, toward the heat sink 22), and the remaining six LED chips are located on the opposite side of the substrate 241 (ie, facing away from the heat sink 22). Furthermore, in the third embodiment, the lamp holder 23 has a tapered structure, and the cross-sectional area of the bottom portion is substantially larger than the cross-sectional area of the top portion to improve the illumination of the wide-angle type light-emitting diode bulb 2. The lamp holder 23 and the heat sink 22 are made of aluminum to facilitate conduction of heat generated by the LED 242 to the heat sink 22. In addition, a person skilled in the art can provide a black body radiation layer (not shown) on the surface of the heat sink 22 to improve the heat dissipation efficiency of the wide-angle LED bulb 2.

Example 4

Please refer to FIG. 3 , which is a perspective view of a wide-angle LED bulb 3 of Embodiment 4. The structure of Embodiment 4 is substantially similar to that of Embodiment 1, except that the light-emitting diode 342 of Embodiment 4 includes 20 0.5 watt LED chips emitting light of 200 nm to 800 nm. The light-emitting diodes 342 are disposed on the surface of the substrate 341, wherein the eight light-emitting diode chips are located on one side of the substrate 341 connected to the lamp holder 33 (ie, facing the heat sink 32), and the remaining 12 Light-emitting diode chip Located on the opposite side of the substrate 341 (i.e., facing away from the heat sink 32), thereby improving its illumination.

Accordingly, the wide-angle LED bulb 3 of the embodiment 4 includes: a cap 31; a heat sink 32 is disposed on the cap 31; a lamp holder 33 is disposed on the heat sink 32. a light-emitting unit 34 is disposed on the surface of the lamp holder 33 and electrically connected to the lamp cap 31, and the light-emitting unit 34 is composed of a substrate 341 and a light-emitting diode 342; and a light cover 35, The light-emitting unit 34 is disposed on the top of the light frame 33 and perpendicular to the light frame 33 by a fixing member (not shown); the substrate 341 is disposed on the lamp holder 33 and the light-emitting unit 34. The system is a single-layer transparent sapphire substrate; the light-emitting diode 342 comprises 20 0.5-watt LED chips emitting light from 200 nm to 800 nm, and the LED 342 is disposed on The surface of the substrate 341, and 8 of the LED chips are located on one side of the substrate 341 connected to the lamp holder 33 (ie, facing the heat sink 32), and the remaining 12 LED chips are located on the substrate 341. The opposite side (ie, the direction away from the heat sink 32). Furthermore, in the fourth embodiment, the lamp holder 33 has a columnar structure and the surface is a reflecting surface to improve the illumination of the wide-angle LED bulb 3. The lamp holder 33 and the heat sink 32 are made of aluminum to facilitate conduction of heat generated by the LED 342 to the heat sink 32. In addition, a black body radiation layer (not shown) may be disposed on the surface of the heat sink 32 to improve the heat dissipation efficiency of the wide-angle LED bulb 3 according to the needs thereof.

Example 5

Referring to FIG. 4, a cross-sectional view of a wide-angle LED bulb 4 of Embodiment 5 is shown. The structure of the embodiment 5 is substantially similar to that of the first embodiment, and the difference is only that the substrate 441 of the light-emitting unit 44 of the embodiment 5 is a double-layer aluminum substrate and the light-emitting diode 442 is disposed on the double-layer aluminum substrate. Outside. In this embodiment 5, two single-layer aluminum substrates provided with the light-emitting diodes 442 are joined by a bonding layer 443, thereby forming the light-emitting unit 44. However, it should be understood that, as long as the light-emitting unit 44 can be fixed on the lamp holder 43, the bonding layer 443 can be used without any use of the bonding layer 443, and the two devices can be directly provided by a fixing member (not shown). A single-layer aluminum substrate of the pole body 442 is fixed to the lamp holder 43.

Accordingly, the wide-angle LED bulb 4 of the embodiment 5 includes: a cap 41; a heat sink 42 is disposed on the cap 41; a lamp holder 43 is disposed on the heat sink 42. a light-emitting unit 44 is disposed on the surface of the lamp holder 43 and electrically connected to the lamp cap 41, and the light-emitting unit 44 is composed of a substrate 441 and a light-emitting diode 442; and a lamp cover 45, The light-emitting unit 44 is disposed on the top of the light frame 43 and perpendicular to the light frame 43 by a fixing member (not shown); the substrate 441 is disposed on the lamp holder 43 and the light-emitting unit 44. The invention is a double-layer aluminum substrate, wherein the double-layer aluminum substrate is formed by combining two pairs of single-layer aluminum substrates by a bonding layer or a mechanical structure, and the bonding layer may be a resin. a bonding agent, a metal bonding agent, or a ceramic bonding agent, or the like, or a combination thereof, and further, the mechanical structure may be a screw fixing, a combined cassette, or the like, in this embodiment 5, the double-layer aluminum substrate is Two pairs of single-layer aluminum substrates are opposite each other by a resin binder Together and Formed, and this creation is not limited to this. In addition, the double-layer aluminum substrate may have a plurality of through holes, so that the light-emitting diodes on the outer side of the double-layer aluminum substrate can be electrically connected by the through holes. In the fifth embodiment, the light-emitting diode 442 includes ten 1-watt light-emitting diode chips emitting light of 200 nm to 800 nm, and the light-emitting diode 442 is disposed on the surface of the substrate 441. The four LED chips are located on one side of the substrate 441 connected to the lamp holder 43 (ie, facing the heat sink 42), and the remaining six LED chips are located on the opposite side of the substrate 441. (ie, facing away from the heat sink 42). Furthermore, in the fifth embodiment, the lamp holder 43 is a columnar structure, and the surface is a reflecting surface to improve the illumination of the light-emitting diode bulb 4. The lamp holder 43 and the heat sink 42 are made of aluminum to facilitate conduction of heat generated by the LED 442 to the heat sink 42. In addition, a black body radiation layer (not shown) may be disposed on the surface of the heat sink 42 to improve the heat dissipation efficiency of the wide-angle LED bulb 4 according to the needs thereof.

Example 6

Please refer to FIG. 5 , which is a perspective view of a wide-angle LED bulb 5 of Embodiment 6. The structure of the embodiment 6 is substantially similar to that of the first embodiment except that the lamp holder of the wide-angle type LED package 5 of the embodiment 6 is a branch structure having three extensions 531, and the illumination unit 54 is provided. They are disposed on both sides of the extension portion 531.

Accordingly, the wide-angle LED bulb 5 of the embodiment 6 includes: a cap 51; a heat sink 52 is disposed on the cap 51; The light frame 53 is disposed on the top of the heat sink 52. A light emitting unit 54 is disposed on the surface of the light frame 53 and electrically connected to the light cap 51. The light emitting unit 54 is formed by a substrate 541 and a light emitting unit The lamp body 542 is configured to be disposed outside the lamp holder 53 and the light-emitting unit 54. The lamp holder 53 is a branch structure having three extending portions 531, and the light-emitting unit 54 is disposed. The substrate 541 is a single-layer aluminum substrate; the light-emitting diode 542 is disposed on the outer side of the substrate 541, and each of the light-emitting units 54 is disposed on the two sides of the extending portion 531. The light-emitting diode 542 comprises eight 0.5-watt LED chips emitting light of 200 nm to 800 nm, so that the light-emitting unit 54 can simultaneously produce a direction toward the shade 55 and a back cover 55. Illumination in one direction. Furthermore, in the sixth embodiment, the lamp holder 53 and the heat sink 52 are made of aluminum to facilitate conduction of waste heat generated by the LED 542 to the heat sink 52. In addition, a person skilled in the art can provide a black body radiation layer (not shown) on the surface of the heat sink 52 to improve the heat dissipation efficiency of the wide-angle LED bulb 5.

The above-described embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

1‧‧‧ wide-angle LED bulb

11‧‧‧Light cap

12‧‧‧ Heat sink

13‧‧‧Light stand

14‧‧‧Lighting unit

141‧‧‧Substrate

142‧‧‧Lighting diode

15‧‧‧shade

Claims (19)

A wide-angle LED bulb includes: a lamp cap; a heat sink disposed on the lamp cap; a lamp holder disposed on the top of the heat sink; and an illumination unit disposed on the surface of the lamp holder And electrically connected to the lamp cap, and the light emitting unit is composed of a substrate and a light emitting diode; and a lamp cover is disposed on the lamp frame and the outside of the light emitting unit. The wide-angle light-emitting diode bulb according to claim 1, wherein the substrate is a single-layer substrate, and the light-emitting diode system is disposed on both sides of the single-layer substrate. The wide-angle light-emitting diode bulb according to claim 1, wherein the substrate is a two-layer substrate, and the light-emitting diode system is disposed on an outer side of the two-layer substrate. The wide-angle light-emitting diode bulb according to claim 3, wherein the two-layer substrate is bonded to each other by a pair of single-layer substrates by a bonding layer or a mechanical structure. form. The wide-angle LED light bulb of claim 1, wherein the light-emitting unit is disposed at the top of the light fixture, and the light-emitting unit is perpendicular to the light fixture. The wide-angle LED light bulb of claim 1, wherein the light-emitting unit is disposed on a side of the light fixture, and the light-emitting unit is parallel to the light fixture. The wide-angle light-emitting diode bulb according to claim 1, wherein the substrate is a transparent substrate. The wide-angle light-emitting diode bulb according to claim 1, wherein the substrate is a glass substrate, a ceramic substrate, or an aluminum substrate. The wide-angle light-emitting diode bulb according to claim 1, wherein the side of the light frame is a curved outer shape, and the curved surface is a columnar structure, a tapered structure, or a A branched structure having a plurality of extensions. The wide-angle type light-emitting diode bulb according to claim 1, wherein the light-emitting unit is composed of one to ten of the substrates. The wide-angle light-emitting diode bulb according to claim 1, wherein the light-emitting diode system comprises from 1 to 20 light-emitting diode chips. The wide-angle light-emitting diode bulb according to claim 11, wherein the light-emitting diode chip emits light having a wavelength of from 200 nm to 800 nm. The wide-angle LED light bulb of claim 1, wherein the heat sink is a metal, a ceramic, or a heat conductive plastic. The wide-angle LED light bulb of claim 1, wherein the lampshade is a light transmissive glass or a plastic outer casing. The wide-angle LED light bulb of claim 1, wherein the heat sink further comprises a black body radiation layer applied to the surface of the heat sink. The wide-angle light-emitting diode bulb according to claim 15, wherein the black body radiation layer is a twisted amorphous carbon, and the twisted amorphous carbon is based on the total number of sp ³ and sp ² bonds. The number of sp ³ bonds is 50 to 100%. The wide-angle light-emitting diode bulb according to claim 15, wherein the black body radiation layer has a thickness of 0.1 μm to 100 μm. The wide-angle light-emitting diode bulb according to claim 17, wherein the black body radiation layer has a thickness of 0.5 μm to 5 μm. The wide-angle type light-emitting diode bulb according to claim 15, wherein the black body radiation layer has a nano-roughened surface.