TW201441540A - Light emitting diode bulb - Google Patents

Abstract

An light emitting diode(LED) bulb includes a lamp shade, a circuit board, a plurality of LEDs and a lamp holder. The circuit board includes a first surface and a second surface opposite to the first surface of the circuit board. The plurality of LEDs includes at least one first LED and at least one second LED, and each of first and second LEDs emits white light with different color temperatures. The at least one first LED is arranged on the first surface of the circuit board as a first light source. At least one second LED is arranged on the second surface of the circuit board as a second light source. The lamp shade covers the first and second light sources in order to adjust the light field distribution of the first and second light sources. The lamp holder contacts the lamp shade, and electrically connected with the circuit board and the plurality of LEDs. The LED bulb of present invention emits white light with different color temperatures, and has a wide viewing angle.

Description

Light-emitting diode bulb

The invention relates to a light-emitting diode bulb.

LED bulbs use LED components as a light source. However, due to the limitation of the LED bulb architecture, the LED bulb has an exit angle of less than 180 degrees, and its illumination range has obvious locality, and the color temperature is single, which cannot be applied to the diverse needs of special regions or application scenarios.

The present invention aims to provide a light-emitting diode bulb which not only overcomes the disadvantage that the angle of the light field of the conventional LED bulb is small, but also emits white light having two different color temperatures.

A light-emitting diode bulb includes a lamp cover, a circuit substrate, an LED assembly and a lamp base, the circuit substrate is a double-sided circuit substrate and has oppositely disposed first and second faces; and the LED assembly includes a first LED component and a second LED component The first and second LED components both emit white light and have different color temperatures; the first and second LED components are respectively mounted on the first side and the second side of the double-sided circuit substrate as the first light source and the second a light source; the lamp cover is disposed on the first and second light sources to adjust the light field dispersion of the first and second light sources; the lamp cap is connected to the lamp cover and electrically connected between the circuit substrate and the LED assembly.

The light-emitting diode bulb provided by the invention has two kinds of white light and different color temperature LED components respectively disposed on both sides of the double-sided circuit substrate, so that the color temperature of the light emitted from the two sides of the double-sided circuit substrate of the light-emitting diode bulb is different. And make the overall light angle increase. In addition, with the use of the lampshade, the light field of the entire wide-angle LED bulb can be evenly dispersed.

10. . . Light-emitting diode bulb

110. . . First light source

120. . . Second light source

101. . . First lampshade

1011. . . side

1012. . . Concave surface

1013. . . Convex surface

102. . . Second lampshade

103. . . Double-sided circuit substrate

1031. . . First side

1032. . . Second side

1041. . . First LED component

1042. . . Second LED component

105. . . lens

106, 1061. . . Heat sink fin

107. . . Lamp head

1 is a schematic view of a light-emitting diode bulb in a first embodiment of the present invention.

2 is a schematic view of a double-sided circuit substrate of the light-emitting diode bulb shown in FIG. 1.

3 is a schematic view showing the first surface side of the double-sided circuit board of the light-emitting diode bulb shown in FIG. 1.

4 is a schematic view of a light-emitting diode bulb in a second embodiment of the present invention.

Fig. 5 is a schematic view showing a second surface side of a double-sided circuit board of a light-emitting diode bulb according to a third embodiment of the present invention.

Fig. 6 is a schematic view showing a second surface side of a double-sided circuit board of a light-emitting diode bulb according to a fourth embodiment of the present invention.

Fig. 7 is a schematic view showing a second surface side of a double-sided circuit board of a light-emitting diode bulb according to a fifth embodiment of the present invention.

The invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 to FIG. 2 , the LED bulb 10 includes a first lamp cover 101 , a second lamp cover 102 , a double-sided circuit substrate 103 , a first LED component 1041 , a second LED component 1042 , a lens 105 , and a heat dissipation fin 106 and the base 107. The first LED component 1041 and the second LED component 1042 are electrically connected to the base 107 through the double-sided circuit substrate 103, and the base 107 includes components such as a power supply.

The first LED component 1041 and the second LED component 1042 both emit white light, and the color temperatures of the two are different. For example, according to different application requirements, the color temperature interval of the first LED component 1041 and the second LED component 1042 can be matched with a cool color temperature and a warm color temperature, a warm color temperature and a neutral color temperature, or a cool color temperature and a neutral color temperature. In order to meet the psychological needs and physiological needs of the user, the color temperatures of the first LED component 1041 and the second LED component 1042 can also select different color temperatures of the same color temperature interval to improve the comfort of the LED light bulb.

The double-sided circuit substrate 103 has a first surface 1031 and a second surface 1032 that are oppositely disposed. At least one first LED component 1041 is loaded on the first face 1031 as the first light source 110. At least one second LED component 1042 is loaded on the second side 1032 as the second light source 120.

The double-sided circuit substrate 103 can be circular, elliptical or polygonal, whereby the shape of the outer frame of the first lamp cover 101 and the second lamp cover 102 and the double-sided circuit substrate 103 can be adjusted accordingly, so that the first lamp cover can be adjusted accordingly. 101. The portion where the second lampshade 102 is joined to the double-sided circuit substrate 103 is a corresponding circular, elliptical or polygonal shape. The double-sided circuit substrate 103 shown in this embodiment has a circular shape.

The first lamp cover 101 is disposed on the first light source 110 to adjust the light field dispersion of the first light source 110. In order to fit the circular double-sided circuit board 103, the portion where the first lamp cover 101 and the double-sided circuit board 103 are joined is circular.

Further, referring to FIG. 3, both the inner surface and the outer surface of the first lampshade 101 can be atomized to divergence the light beam transmitted through the first lampshade 101 to enhance the uniformity of light transmitted through the first lampshade 101.

Preferably, in the embodiment, only the inner surface of the first lampshade 101 is atomized, so that the light beam transmitted through the first lampshade 101 is diverged, which not only softens the light, but also enhances the light output of the light-emitting diode bulb 10. Uniformity; the outer surface of the first lampshade 101 is smooth, and the smooth outer surface is not only less viscous, but also easy to clean.

The second lampshade 102 is a cylindrical structure with open ends. The outer sidewall of the second lampshade 102 has a concave curved surface. One end of the second lamp cover 102 is coupled to the circular double-sided circuit substrate 103 such that the second lamp cover 102 covers the second light source 120 to adjust the light field dispersion of the second light source 120.

It can be understood that the first lamp cover 101 and the second lamp cover 102 can be integrally formed, so that the double-sided circuit substrate 103 enters from the bottom of the second lamp cover 102, and the double-sided circuit substrate 103 is fixed to the first lamp cover by means of bonding or the like. 101 and the appropriate position in the space surrounded by the second lampshade 102. At this time, the double-sided circuit substrate 103 can be selected from a flexible and bendable material, and the double-sided circuit substrate 103 can also be used, and the bending and the bending are ensured. The connection does not affect the performance of the double-sided circuit substrate 103 and the components mounted on the double-sided circuit substrate 103.

The heat dissipating fins 106 are loaded between the second lamp cover 102 and the lamp cap 107, and the air, the first lampshade 101, the second lampshade 102, and the outer casing of the lamp cap 107 are heat transfer media, and the first light source is used. 110. The heat generated by the second light source 120 and the lamp cap 107 is transferred to the external environment. In addition, when the heat generated by the LED bulb 10 is sufficient to be evacuated through the outer casing of the first lampshade 101, the second lampshade 102, and the lamp cap 107, the heat sink fins 106 may not be loaded, so that the second lampshade 102 directly The base 107 is connected.

Further, referring to FIG. 4 , in order to enhance the heat dissipation function of the LED bulb, an auxiliary heat dissipation fin 1061 may be added, and the auxiliary heat dissipation fin 1061 is mounted on the periphery of the double-sided circuit substrate 103 and located in the first lampshade. Between 101 and the second shade 102.

Furthermore, between the first lamp cover 101 and the double-sided circuit substrate 103, between the double-sided circuit substrate 103 and the second lamp cover 102, between the second lamp cover 102 and the heat dissipation fins 106, the heat dissipation fins 106 and the lamp cap 107 The joints are coated with thermal adhesive to improve thermal conductivity.

Since the intensity of the light intensity of the LED component is unevenly distributed, the forward light intensity is greater than the lateral light intensity. When the human eye is directly viewed by the naked eye, the LED light bulb is glaring. The LED bulb 10 provided in this embodiment can be mounted on a wall or a roof in a room, and the first lamp cover 101 having an atomizing surface is covered on the first light source 110 when the human eye is used. When the light-emitting diode bulb 10 is viewed in direct view, the light of the light-emitting diode bulb 10 is not felt to be glaring.

Further, a lens 105 is provided on the second LED assembly 1042 of the second light source 120 of the light-emitting diode bulb 10. The lens 105 is used to refract light emitted by the second LED assembly 1042. The top center of the lens 105 has a concave curved surface that is recessed toward the second LED assembly 1042.

Further, referring to FIG. 5, the concave curved surface at the center of the top of the lens 105 is atomized, so that the light emitted by the second light source 120 is diverged through the concave curved surface of the lens 105, thereby enhancing the uniformity of the light output, and is not limited thereto. One lens 105 corresponds to a second LED assembly 1042.

In addition, referring to FIG. 6, the concave curved surface at the top center of the lens 105 may also be mirror-finished to reflect the light emitted from the second light source 120 and reaching the mirror surface, so that more light can pass through the side of the lens 105, thereby More light passes through the second shade 102 to increase the brightness of the light-emitting diode bulb 10.

Further, referring to FIG. 7, the inner surface of the second lampshade 102 is atomized to disperse the light beam transmitted through the second lampshade 102, which not only softens the light but also enhances the light output of the light-emitting diode bulb 10. Uniformity; the outer surface of the second lampshade 102 is smooth, and the smooth outer surface is not only less viscous, but also easy to clean.

It can be understood that the outer surface of the second lamp cover 102 can be atomized or the inner and outer surfaces of the second lamp cover 102 can be atomized.

The technical and technical features of the present invention have been disclosed as above, and those skilled in the art can still make various substitutions and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should be construed as being limited by the scope of the appended claims

10. . . Light-emitting diode bulb

101. . . First lampshade

102. . . Second lampshade

103. . . Double-sided circuit substrate

105. . . lens

106. . . Heat sink fin

107. . . Lamp head

Claims (10)

A light-emitting diode bulb includes a lamp cover, a circuit substrate, an LED assembly and a lamp base, the circuit substrate is a double-sided circuit substrate and has oppositely disposed first and second faces; and the LED assembly includes a first LED component and a second LED component The first and second LED components both emit white light and have different color temperatures; the first and second LED components are respectively mounted on the first side and the second side of the double-sided circuit substrate as the first light source and the second a light source; the lamp cover is disposed on the first and second light sources to adjust the light field dispersion of the first and second light sources; the lamp cap is connected to the lamp cover and electrically connected between the circuit substrate and the LED assembly. The light-emitting diode bulb of claim 1, wherein the lamp cover comprises a first lamp cover and a second lamp cover, the first lamp cover is disposed on the first light source to adjust the light field dispersion of the first light source, and the second lamp cover is A light source dispersion of the second light source is adjusted on the second light source. The light-emitting diode bulb of claim 2, wherein the second lamp cover is a cylindrical structure with open ends, and the second lamp cover has one end connected to the double-sided circuit substrate and the other end connected to the lamp cap. The light-emitting diode bulb of claim 3, wherein the outer side wall of the second lamp cover is a concave curved surface. The light-emitting diode bulb of claim 4, further comprising a heat-dissipating fin added between the other end of the second lamp cover and the lamp cap. The light-emitting diode bulb according to claim 5, wherein the first lamp cover and the double-sided circuit substrate, the double-sided circuit substrate and the second lamp cover, the second lamp cover and the heat dissipation fin A heat conducting medium is disposed between the heat dissipating fins and the lamp cap. The light-emitting diode bulb of claim 2, further comprising an auxiliary heat-dissipating fin mounted on a periphery of the double-sided circuit substrate, wherein the auxiliary heat-dissipating fin is located in the first lampshade and the first Between the two shades. The light-emitting diode bulb of claim 2, further comprising a lens mounted on the LED assembly of the second light source, the lens for adjusting an optical path of the second light source, the lens top center having a A concave curved surface that is recessed toward the LED assembly. The light-emitting diode bulb of claim 8, wherein the concave curved surface at the center of the top of the lens is mirror-finished or atomized. The light-emitting diode bulb according to any one of the items 2 to 9, wherein at least one of an inner surface and an outer surface of the first lamp cover or the second lamp cover is atomized to emit The light has a scattering effect.