TW201425810A - Wide angle illumination device - Google Patents

Abstract

A wide angle illumination device of the present invention at least includes a substrate, at least one light emitting module and a lampshade. The substrate has a pyramid structure body, a heat conducting part and a heat dissipation part. The heat conducting part is located between the pyramid structure body and the heat dissipation part. A connection neck part is formed between the pyramid structure body and the heat conducting part. The width of the heat conducting part is gradually increased along a direction from the connection neck part toward the heat dissipation part, or the sum of the thicknesses of two opposite side walls of the heat conducting part is greater than or equal to the thickness of the connection neck part. Each of the light emitting modules is located on a top surface or lateral surface of the pyramid structure body. The lampshade covers on the substrate. Through forming different projection surfaces in different angles by arranging the top surface and each lateral surface toward different directions, the illumination range of the light emitting module is increased for achieving a wide angle illumination effect, which increases brightness and uniform lighting effect, and heat dissipation is increased by the substrate structure, for ensuring illumination efficiency of each light emitting module.

Description

Wide-angle lighting device

The invention relates to a wide-angle illumination device, in particular to a wide-angle illumination device which can achieve wide-angle illumination effect, can improve luminance and homogenization effect, and has better heat dissipation effect.

In recent years, due to the increasing global warming problem, various environmentally-friendly products that save energy and reduce carbon have been paid attention to. In terms of light bulbs, incandescent bulbs have traditionally been used, but incandescent bulbs consume 90% of the energy consumed in the process of illuminating. Converted into heat, less than 10% of the energy will become light, so the luminous efficiency is low, and energy is seriously wasted.

In view of the low luminous efficiency of incandescent light bulbs, many light-emitting units that can replace incandescent light bulbs have been developed on the market, one of which is a Light Emitting Diode (LED), which has high brightness, power saving, environmental protection and service life. Longer advantages, and can reduce carbon dioxide emissions during manufacturing, in addition to effectively reducing costs, can also achieve the purpose of reducing pollution.

In the prior art, a light bulb with a LED as a light source is mainly provided with an illuminant and a lamp cover on the screw joint. The illuminating system has a flat circuit board and an LED light emitting unit thereon. However, the LED The light source belongs to direct light. When the LED light emitting unit is disposed on a flat circuit board, the LED light emitting unit only illuminates in a single direction, and generally the LED light emitting unit has an illumination angle of about 120 degrees, so that the illumination range is small, resulting in the The light of the LED light-emitting unit is not easily projected to the side and the bottom of the lamp cover, thereby causing the lack of brightness of the side and the bottom of the light-transmitting lamp cover, and cannot provide a good Lighting effects, so it needs to be improved.

Therefore, there is a conventional LED light bulb, such as U.S. Patent No. 6,220,722, the patent name "LED LAMP", as shown in the first figure (A), which discloses an LED bulb 1 having a columnar body 11, the column body 11 The top end is connected to the corner pyramid 13 by the connecting portion 12, and the plurality of light emitting diodes 14 are fixed on the surfaces of the corner cone 13 to achieve the effect of wide-angle illumination, and the columnar body 11 is provided with a fan 15 and two. The opening 16 of the end side can transmit the working heat source of each of the LEDs 14 from the pyramid 13 to the column 11 through the connecting portion 12, and the heat source is provided by the fan 15 in the column 11. Dissipated by the opening 16 at both ends, please also refer to the first figure (B).

However, the column body 11 must be provided with the fan 15, the overall structure is relatively complicated and the assembly is time consuming, and a large space needs to be opened in the columnar body 11 to accommodate the fan 15, resulting in the columnar body in the heat source conduction path. The thickness of 11 is smaller than the width of the connecting portion 12, so that the heat source cannot be effectively conducted from the connecting portion 12 to the columnar body 11, so that the heat dissipation effect is still not good.

In view of the above, the present invention relates to a wide-angle illumination device, and more particularly to a wide-angle illumination device that can achieve a wide-angle illumination effect, and can improve luminance and homogenization effects, and has a better heat dissipation effect as its main purpose.

In order to achieve the above, the wide-angle illumination device of the present invention comprises at least a base body, at least one light-emitting module and a lamp cover, the base body has a pyramid structure, a heat-conducting portion and a heat-dissipating portion, and the heat-conducting portion is located in the pyramid structure and Between the heat dissipating portions, a connecting neck portion is formed between the pyramid structure and the heat conducting portion, and the width of the heat conducting portion is gradually increased from the connecting neck portion toward the heat dissipating portion, or the thickness and the thickness of the heat conducting portion opposite to the side walls. Greater than or equal to the thickness of the connecting neck, each of the light emitting modules is located on the top surface and each side of the pyramid structure The cover is covered on the base body, and the top surface and the side surfaces are oriented in different directions to form projection surfaces of different angles, so that the illumination range of the light-emitting module is enlarged, thereby achieving a wide-angle illumination effect, and at the same time The brightness and the uniform light effect are improved, and the heat dissipation effect can be increased by the base structure to ensure the luminous efficacy of each light-emitting module.

To achieve the above object, the side wall of the heat conducting portion has an inclination angle of more than 0 to 45 degrees.

To achieve the above objective, the light emitting module has a circuit board and a plurality of light emitting diodes on the circuit board, and the circuit board is respectively positioned on the top surface and each side surface.

To achieve the above object, the base body is further provided with a power controller, and the heat conducting portion has at least two through holes for wires to be connected to the power controller and the circuit board.

In order to achieve the above object, the heat conducting portion may further be provided with a heat pipe, one end of which is in contact with the pyramid structure, and the other end is in contact with the heat dissipating portion.

For the above purpose, the pyramid structure may be a triangular pyramid having three triangular sides and a triangular top surface; or the pyramid structure may be a quadrangular pyramid having four The sides of the triangle and a top surface that is square.

To achieve the above object, the heat dissipating portion is formed with a plurality of heat dissipating fins.

1‧‧‧LED bulb

11‧‧‧ columnar body

12‧‧‧Connecting Department

13‧‧‧Corner

14‧‧‧Lighting diode

15‧‧‧fan

16‧‧‧Opening

2‧‧‧wide-angle lighting

21‧‧‧ base

211‧‧‧Corner structure

211a‧‧‧ side

211b‧‧‧ top surface

212‧‧‧Transfer Department

212a‧‧‧ side wall

213‧‧‧ Department of heat dissipation

214‧‧‧Power Controller

215‧‧‧Perforation

216‧‧‧Connected to the neck

217‧‧‧heat pipe

218‧‧‧heat fins

22‧‧‧Lighting module

221‧‧‧ boards

222‧‧‧Lighting diode

223‧‧‧Wire

23‧‧‧shade

24‧‧‧Spiral joint

241‧‧ Thread Department

The first figures (A) and (B) are perspective views of the structure of the bulb in U.S. Patent No. 6220722.

The second figure is a perspective view of the structure of the wide-angle illumination device of the present invention.

The third figure is an exploded view of the structure of the wide-angle illumination device of the present invention.

The fourth figure is a cross-sectional view showing the structure of the wide-angle illumination device of the present invention.

The fifth drawing is a cross-sectional view of the structure of the substrate in the present invention.

The sixth figure is another schematic diagram of the structure of the wide-angle illumination device of the present invention.

The seventh figure is a further schematic structural view of the wide-angle illumination device of the present invention.

The eighth figure is a perspective view of another structure of the pyramid structure of the present invention.

The ninth drawing is a cross-sectional view showing another structure of the substrate in the present invention.

The features of the present invention can be clearly understood by referring to the drawings and the detailed description of the embodiments.

2 is a perspective view showing the structure of the wide-angle illumination device of the present invention. The wide-angle illumination device 2 of the present invention includes at least a base 21, at least one illumination module 22, and a lamp cover 23.

The base body 21 has a pyramid structure 211, a heat conducting portion 212, and a heat dissipating portion 213. The heat conducting portion 212 is located between the pyramid structure 211 and the heat dissipating portion 213. The pyramid structure 211 is provided with at least three triangular sides. 211a and a top surface 211b, in the embodiment shown, the pyramid structure may be a triangular pyramid having three triangular sides 211a and a triangular top surface 211b, the top surface 211b and Each of the side surfaces 211a is connected to each other by a corresponding side thereof. The top surface 211b faces the heat conducting portion 212, and the other three side surfaces 211a face the heat conducting portion 212. Please refer to the third figure, the base 21 Further, a power controller 214 is further disposed. The base 21 is further provided with a screw joint 24. The bottom end of the screw joint 24 is a threaded portion 241 for screwing to a general power socket to obtain a power source. Furthermore, the pyramid structure 211 can also be a quadrangular pyramid, as shown in the eighth figure. It has four triangular side faces 211a and a square top surface 211b; of course, the pyramid structure can also be other polygonal pyramids.

The light-emitting module 22 has a circuit board 221 and a plurality of light-emitting diodes 222 on the circuit board 221, and the circuit board 221 is respectively positioned on the top surface 211b and each side surface 211a. As shown in the third and fourth figures, the heat conducting portion 212 has at least two through holes 215 through which the wires 223 can be connected to connect the power controller 214 and the circuit board 221, thereby controlling the LEDs 222. Luminous effect.

The lamp cover 23 is covered on the heat dissipating portion 213 to cover the base body 21 and protect the light emitting module 22 on the base body 21. The top surface 211b and the side surfaces 211a are oriented in different directions to form projection surfaces of different angles, so that the illumination range of the light-emitting module 22 located thereon is enlarged, thereby achieving a wide-angle illumination effect, and at the same time, the brightness and the brightness can be improved. Light effect.

The heat conducting portion 212 is a hollow structure, and the heat conducting portion 212 is formed in the embodiment. As shown in FIG. The thickness and (a1+a2) of the opposite side walls 212a are greater than or equal to the thickness (a3) of the connecting neck portion 216, that is, a1+a2≧a3; and the working heat source of the light emitting diode is used by the pyramid structure 211. The working heat source is dissipated by the connecting neck portion 216 to the heat conducting portion 212 and the heat dissipating portion 213 to ensure the luminous efficiency of each of the light emitting modules. In the heat conducting path, the thickness of the connecting neck portion 216 is smaller than the heat conducting portion. The thickness of the portion 212 opposite to the two side walls 212a allows the heat source to be naturally pushed by the connecting neck portion 216 to the heat conducting portion 212 to smoothly discharge the heat source. Moreover, the width of the heat conducting portion 212 is gradually increased from the connecting neck portion 216 toward the heat radiating portion 213, and the inclined angle of the heat conducting portion sidewall 212a is greater than 0 to 45 degrees, and can be along the heat conduction path (the arrow in the figure) Direction) increase the distance between the side walls 212a, further increase Add heat dissipation.

In addition, as shown in FIG. 6, the heat conducting portion 212 may further be provided with a heat pipe 217, one end of which is in contact with the pyramid structure 211, and the other end is in contact with the heat radiating portion 213, and the heat pipe 217 may be The heat dissipation portion 213 can be formed with a plurality of heat dissipation fins 218. In the embodiment shown in the figure, the extending direction of each of the heat dissipation fins 218 is along the extending direction of the heat dissipation portion 213; As shown in the seventh figure, each of the heat dissipation fins 218 is annularly disposed on the heat dissipation portion 213.

Furthermore, as shown in another embodiment of the ninth embodiment, the heat conducting portion 212 is a solid structure, and the width of the heat conducting portion 212 is gradually increased from the connecting neck portion 216 toward the heat radiating portion 213, and the heat conducting portion The inclination angle of the side wall 212a is greater than 0 to 45 degrees, and the width of the heat conducting portion 212 can be increased along the heat conduction path (the direction of the arrow in the figure), which can also increase the heat dissipation effect.

In addition, the pyramid structure forms a chamfer at the intersection of the top surface and each side surface, and a chamfer is also formed at the intersection of each side surface; or, the corner cone structure is on the top surface and the corresponding connection side of each side surface A chamfered surface is formed therein, and a correspondingly connected side of each side surface is formed with a chamfered surface, which facilitates assembly of the pyramid structure.

In summary, the present invention provides a preferred and feasible wide-angle illumination device, and an application for a patent for invention is provided according to the law; the technical content and technical features of the present invention are disclosed above, but those skilled in the art may still be based on the present invention. The disclosure is made 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

2‧‧‧wide-angle lighting

21‧‧‧ base

211‧‧‧Corner structure

211a‧‧‧ side

211b‧‧‧ top surface

212‧‧‧Transfer Department

213‧‧‧ Department of heat dissipation

215‧‧‧Perforation

216‧‧‧Connected to the neck

22‧‧‧Lighting module

221‧‧‧ boards

222‧‧‧Lighting diode

Claims (13)

A wide-angle illumination device includes at least: a base body having a pyramid structure, a heat conducting portion, and a heat dissipating portion, wherein the heat conducting portion is located between the pyramid structure and the heat dissipating portion, and the pyramid structure is provided with at least three a side surface of the triangle and a top surface, the top surface and each side surface being connected to each other by a corresponding side thereof, the top surface facing the heat conducting portion, and the other three sides facing downward of the heat conducting portion, and the pyramid structure Forming a connecting neck portion with the heat conducting portion, the width of the heat conducting portion is gradually increasing from the connecting neck portion toward the heat dissipating portion; at least one light emitting module is located on the top surface and each side surface; and the lamp cover is covered by the cover The substrate is covered on the heat dissipating portion. The wide-angle illumination device of claim 1, wherein the side wall of the heat conducting portion has an inclination angle of more than 0 to 45 degrees. The wide-angle illumination device of claim 1 or 2, wherein the illumination module has a circuit board and a plurality of light-emitting diodes on the circuit board, the circuit boards being respectively positioned on the top surface and each side surface. The wide-angle illumination device of claim 3, wherein the base body is further provided with a power controller, and the heat conducting portion has at least two through holes for wires to be connected to the power controller and the circuit board. The wide-angle illumination device of claim 1 or 2, wherein the pyramid structure may be a triangular pyramid having three triangular sides and a triangular top surface; or the pyramid structure may be A quadrangular pyramid having four triangular sides and a square top surface. The wide-angle illumination device of claim 1 or 2, wherein the heat dissipation portion is formed with a plurality of heat dissipation fins. A wide-angle illumination device comprising at least: a base body having a pyramid structure, a heat conducting portion and a heat dissipating portion, the heat conducting portion being located between the pyramid structure and the heat dissipating portion, wherein the pyramid structure is provided with at least three triangular sides and a top surface, the top portion The surface and the sides are connected to each other by a corresponding side thereof, the top surface is facing the heat conducting portion, the other three sides are facing the heat conducting portion, and the connecting portion is formed between the pyramid structure and the heat conducting portion. The heat conducting portion is a hollow structure, and the thickness of the heat conducting portion opposite to the two side walls is greater than or equal to the thickness of the connecting neck portion; at least one light emitting module is located on the top surface and each side surface; and the lamp cover is covered Covering the heat dissipating portion to cover the substrate. The wide-angle illumination device of claim 7, wherein the width of the heat conducting portion is gradually increased from the connecting neck toward the heat dissipating portion, and the side wall of the heat conducting portion is inclined at an angle greater than 0 to 45 degrees. The wide-angle illumination device of claim 7 or 8, wherein the illumination module has a circuit board and a plurality of light-emitting diodes on the circuit board, the circuit boards being respectively positioned on the top surface and each side surface. The wide-angle illumination device of claim 9, wherein the base body is further provided with a power controller, and the heat conducting portion has at least two through holes for wires to be connected to the power controller and the circuit board. The wide-angle illumination device of claim 7 or 8, wherein the heat conducting portion is further provided with a heat pipe, the heat pipe is in contact with the pyramid structure at one end, and the other end is in contact with the heat dissipating portion. The wide-angle illumination device of claim 7 or 8, wherein the pyramid structure may be a triangular pyramid having three triangular sides and a triangular top surface; or the pyramid structure may be A quadrangular pyramid having four triangular sides and a square top surface. The wide-angle illumination device of claim 7 or 8, wherein the heat dissipation portion is formed with a plurality of heat dissipation fins.