TW201441524A - Light emitting diode bulb - Google Patents

Abstract

An light emitting diode(LED) bulb includes two lamp shades, a circuit board, a plurality of LEDs and a lamp holder. The lamp shades includes a first lamp shade and a second lamp shade. The circuit board includes a first surface and a second surface opposite to the first surface of the circuit board. At least one LED is arranged on the first surface of the circuit board as the first light source. The first lamp shade covers the first source in order to adjust the optical field distribution of the first light source. At least one LED is arranged on the second surface of the circuit board as the second light source. The second lamp shade covers the second light source in order to adjust the optical field distribution of the second light source. The lamp holder is arranged at the side of the second surface of the circuit board, and electrically connected with the circuit board and the plurality of LEDs.

Description

Light-emitting diode bulb

The invention relates to a light-emitting diode bulb.

Conventional light-emitting diode bulbs use LED components as a light source. However, the LED assembly has a special light field distribution in which the forward light intensity is greater than the lateral light intensity, resulting in uneven distribution of the light field intensity formed by the light-emitting diode bulb. In addition, due to the limitation of the structure of the light-emitting diode bulb, the light-emitting diode bulb has an exit angle of less than 180 degrees, and the illumination range has obvious locality.

The present invention aims to provide a light-emitting diode bulb that overcomes the shortcomings of the conventional light-emitting diode bulb with a small light-emitting angle and insufficient illumination range.

A light-emitting diode bulb, comprising a lamp cover, a circuit substrate, a plurality of LED components and a lamp cap; the lamp cover comprises a first lamp cover and a second lamp cover; the circuit substrate is a double-sided circuit substrate and has opposite first and second faces; At least one LED component is mounted on the first side of the double-sided circuit substrate as a first light source; the first lamp cover is disposed on the first light source to adjust a light field distribution of the first light source; and at least one LED component is mounted on the double-sided circuit substrate The second surface is used as the second light source; the second lamp cover is disposed on the second light source to adjust the light field distribution of the second light source; the lamp head is disposed on the second side of the circuit substrate and is provided by the circuit substrate and the LED assembly Electrical connection.

The light-emitting diode bulb provided by the invention has LED components on both sides of the double-sided circuit substrate, so that the light-emitting angle of the entire light-emitting diode bulb is increased to meet the requirement of large-angle illumination, and further, the cooperation of the lampshade It can also make the intensity distribution of the light field uniform.

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

104. . . LED assembly

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 of FIG. 1 according to the present invention.

3 is a schematic view showing a first side of a double-sided circuit substrate of the light-emitting diode bulb of FIG. 1 according to the present invention.

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

FIG. 5 is a schematic view 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.

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

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

Referring to FIGS. 1 to 3, the LED bulb 10 includes a first lamp cover 101, a second lamp cover 102, a double-sided circuit substrate 103, an LED assembly 104, a lens 105, heat dissipation fins 106, and a lamp cap 107. The LED assembly 104 is electrically connected to the base 107 by the double-sided circuit substrate 103, and the base 107 includes components such as a power supply driver.

The double-sided circuit board 103 has a first surface 1031 and a second surface 1032 that are opposite to each other. At least one LED assembly 104 is mounted on the first face 1031 as the first light source 110. At least one LED assembly 104 is mounted on the second side 1032 as the second source 120.

The double-sided circuit substrate 103 can be circular, elliptical or polygonal, whereby the contour shape 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 101 can be adjusted accordingly. The portion where the second lamp cover 102 and the double-sided circuit substrate 103 are joined is a corresponding circular shape, elliptical shape 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 distribution of the first light source 110. The first lampshade 101 includes a side surface 1011 that rotates circumferentially along the edge of the double-sided circuit substrate 103 and extends away from the second surface 1032 of the double-sided circuit substrate 103, and is located at the center of the top of the first lampshade 101 with respect to the first The concave curved surface 1012 of the light source 110 is recessed, and an annular convex curved surface 1013 that is convex with respect to the first light source 110 connecting the concave curved surface 1012 and the side surface 1011. In order to fit the circular double-sided circuit board 103, the bottom portion of the side surface 1011 of the first globe 101, that is, the portion where the side surface 1011 and the double-sided circuit board 103 are joined is circular. The concave curved surface 1012 of the first lamp cover 101 is recessed toward the first light source 110 to diverge the light from the first light source 110, and the convex curved surface 1013 is convex away from the first light source 110 to be from the pair. The light of the first light source 110 acts to converge, so that the design can increase the uniformity of the light field of the light-emitting diode bulb 10.

Further, referring to FIG. 4, 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, only the inner surface of the first lampshade 101 is atomized, which not only softens the light but also enhances the uniformity of the light output of the light-emitting diode bulb 10. 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 lamp cover 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 distribution 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 by means of bonding or the like. A suitable position in the space surrounded by the lamp cover 101 and the second lamp cover 102. At this time, the double-sided circuit substrate 103 can be made of a flexible, bendable material, or a spliced double-sided circuit substrate 103 can be used, and the bending and the bending can be ensured. The splicing 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 installed between the second lamp cover 102 and the lamp cap 107, and the air source, 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 transmitted to the external environment. In addition, when the heat generated by the LED bulb 10 is sufficient to be evacuated by 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 installed, so that the second lampshade 102 is directly Connected to the base 107.

Further, referring to FIG. 5, in order to enhance the heat dissipation function of the light-emitting diode bulb, a heat dissipation fin 1061 may be further disposed, and the heat dissipation fin 1061 is installed around the double-sided circuit substrate 103, and is located at the first lampshade 101 and Between the second lamp covers 102.

Further, between the first lamp cover 101 and the heat dissipation fins 1061 , between the heat dissipation fins 1061 and the second lamp cover 102 , between the second lamp cover 102 and the heat dissipation fins 106 , between the heat dissipation fins 106 and the lamp cap 107 The joints are coated with a thermal paste to improve thermal conductivity.

Since the intensity distribution of the light intensity of the LED component is uneven, 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 light-emitting diode bulb 10 provided in this embodiment can be installed on a wall or a roof in a room, and the first light cover 101 having an atomizing surface is covered on the first light source 110 when the human eye is directly viewed by the naked eye. When the LED bulb 10 is illuminated, the light of the LED bulb 10 is not felt to be glaring.

In addition, a lens 105 may be added to the LED assembly 104 of the second light source 120 of the LED bulb 10. Lens 105 is used to refract light emitted by LED assembly 104. The top center of the lens 105 has a concave curved surface that is recessed toward the LED assembly 104 of the second light source 120.

Further, referring to FIG. 6, 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 one LED assembly 104.

In addition, referring to FIG. 7, the concave curved surface at the top center of the lens 105 can 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 enabling More light passes through the second shade 102 to increase the brightness of the light-emitting diode bulb 10.

Further, referring to FIG. 8, 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

104. . . LED assembly

105. . . lens

106. . . Heat sink fin

107. . . Lamp head

Claims (10)

A light-emitting diode bulb, comprising a lamp cover, a circuit substrate, a plurality of LED components and a lamp cap; the lamp cover comprises a first lamp cover and a second lamp cover; the circuit substrate is a double-sided circuit substrate and has opposite first and second faces; At least one LED component is mounted on the first side of the double-sided circuit substrate as a first light source; the first lamp cover is disposed on the first light source to adjust a light field distribution of the first light source; and at least one LED component is mounted on the double-sided circuit substrate The second surface is used as the second light source; the second lamp cover is disposed on the second light source to adjust the light field distribution of the second light source; the lamp head is disposed on the second side of the circuit substrate and is provided by the circuit substrate and the LED assembly Electrical connection. The light-emitting diode bulb of claim 1, wherein the first lamp cover comprises a side surface that rotates circumferentially along an edge of the double-sided circuit substrate and extends away from a second surface of the double-sided circuit substrate. a concave curved surface located at the center of the top of the first lamp cover and recessed in a direction close to the first light source, and an annular convex curved surface connecting the concave curved surface and the side surface and protruding away from the double-sided circuit substrate. The light-emitting diode bulb according to claim 1, wherein the second lamp cover is a cylindrical structure with both ends open, and one end of the second lamp cover is connected to the double-sided circuit substrate. 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 1, wherein the light-emitting diode bulb further comprises a heat-dissipating fin mounted between the second lamp cover and the lamp cap. The light-emitting diode bulb of claim 1, wherein the light-emitting diode bulb further comprises a heat-dissipating fin mounted on a periphery of the double-sided circuit substrate and located at the first Between the lamp cover and the second lamp cover. The light-emitting diode bulb of claim 6, wherein the first lamp cover and the heat dissipation fin, between the heat dissipation fin and the second lamp cover, and between the heat dissipation fin and the lamp holder Both are provided with a heat transfer medium. The light-emitting diode bulb of claim 1, 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 of the second light source. 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 claims 1 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 so that the emitted light has Scattering effect.