TWI522569B - LED flood light - Google Patents

Description

LED flood light

The invention relates to an LED lamp, in particular to an LED spotlight capable of producing decorative illumination.

Conventional LED lamps usually have a lamp cap, a heat dissipating portion, a light emitting portion, and a non-optical lampshade or an optically effective conical spotlight, and the LED lamps are mostly used in homes, work places or public places, etc. Place and use only as lighting.

In addition, conventional LED lamps can generate different illuminating effects by generating specific ray changes or flickers by different color illuminating portions. However, these effects are only linearly emitted from the light source, and do not produce a unique illuminating shape.

Therefore, how to invent an LED floodlight for decorative lighting to produce a unique illumination shape, which is applied to a night light, an art light, an atmosphere light or a pillar light, etc., will be actively disclosed by the present invention. Where.

It is an object of the present invention to provide an LED floodlight that enables the illuminated light to be shaped into a decorative shape for decorative lighting.

Another object of the present invention is to provide an LED floodlight which can mimic the light and shadow effect of polar aurora, thereby allowing the user to view the light and shadow effect of the polar aurora even in the polar region.

To achieve the above and other objects, the present invention provides an LED floodlighting The lamp comprises a base and a lamp cover.

The base includes: a power connection portion; a heat dissipation portion connected to the power connection portion; a circuit board electrically connected to the power connection portion, one of the circuit board center points to the circuit board The edge is a first length; and at least one LED unit is disposed on the circuit board, the center point of the LED unit to the circuit board is a second length, and the second length is at least 1/ of the first length 10, and the LED unit has at least one LED chip to emit a first light and a second light.

The lamp cover includes: an opaque tube body having a first end and a second end, the first end having a latching portion, the second end being coupled to the heat dissipating portion; and a convex lens The system is disposed at the engaging portion.

The first light passes through the convex lens to form a first light-emitting area, and the second light is reflected by the inner wall of the light-impermeable tube body to form a second light-emitting area.

In a specific embodiment of the present invention, when the second length is close to 1/10 of the first length, the shape of the second light emitting region is a crescent shape; and when the second length is close to the first length /2, the shape of the second light-emitting area is elongated; when the second length is close to the first length, the shape of the second light-emitting area is two connected crescent shapes, and the crescent shapes They are arranged in the length direction.

In an embodiment of the invention, the inner wall of the opaque tube body is treated by polishing, engraving or casting. Wherein, the inner wall of the opaque tube body has a straight or oblique line.

In an embodiment of the invention, the LED unit and the circuit board There is an angle, and the first light emitted by the LED chip faces away from the center point of the circuit board. Wherein, the angle ranges from 10° to 80°.

In an embodiment of the invention, the LED unit has a shape that is geometric. Wherein, the LED unit has a round shape or a heart shape.

In one embodiment of the invention, the focal length of the convex lens is 1f, and the distance from the convex lens to the LED unit is 0.2f to 1f.

In one embodiment of the invention, the LED chip is a yellow wafer, a white wafer, a red wafer, a green wafer, or a blue wafer.

In one embodiment of the invention, the LED unit has three LED wafers, which are a red wafer, a green wafer, and a blue wafer, respectively.

In an embodiment of the present invention, when the susceptor has a plurality of LED units, the pedestal further includes a controller electrically connected to the circuit board to control the LED chips of each of the LED units. Luminous time.

In an embodiment of the invention, when the LED unit has a plurality of LED chips, the base further includes a controller electrically connected to the circuit board to control the illumination time of each of the LED chips.

In one embodiment of the invention, the base has five LED units.

In an embodiment of the invention, the opaque tube system is constructed of a heat dissipating material. Wherein, the opaque tube system is a metal or a highly thermally conductive plastic material.

In summary, the LED floodlight of the present invention is powered by the LED unit The arrangement relationship of the center of the circuit board can make the irradiated light form a special shape; in addition, after the inner wall of the opaque tube body is polished, engraved or cast, the irradiated light can be irradiated Light mimics the light and shadow effects of polar aurora.

In order to fully understand the object, features and advantages of the present invention, the present invention will be described in detail by the following specific embodiments and the accompanying drawings, which are illustrated as follows: A schematic view of an LED floodlight of the present invention. The LED flood light 100 includes a base 10 and a lamp cover 20.

The susceptor 10 includes a power connection portion 11, a heat dissipation portion 12, a circuit board 13 and at least one LED unit 14; the heat dissipation portion 12 is connected to the power connection portion 11; the circuit board 13 is electrically connected to the power supply a connecting portion 11 and a length from a center point C of the circuit board 13 to an edge E of the circuit board 13 is a first length S1; the LED unit 14 is disposed on a surface of the circuit board 13, the LED unit 14 Electrically connected to the circuit board 13, the length of the center point C of the LED unit 14 to the circuit board 13 is a second length S2, and the second length S2 is at least 1/10 of the first length S1, and the The LED unit 14 has at least one LED chip 141 for emitting a first light L1 and a second light L2, wherein the first light L1 is a light having a small emission angle, and the second light L2 is a large emission angle. Light. The LED chip 141 can be a yellow light wafer, a white light wafer, a red light crystal, a green light crystal or a blue light wafer. Furthermore, when the LED unit 14 has three LEDs In the case of the wafer 141, the LED chips 141 are respectively a red chip, a green chip and a blue chip; when the LED unit 14 has four LED chips 141, the LED chips 141 are respectively a yellow wafer, a red wafer, Green and blue wafers.

The hood 20 includes a opaque tube body 21 and a convex lens 22; the opaque tube body 21 has a first end 211 and a second end 212. The first end has a latching portion 2111. The two ends 212 are connected to the heat dissipating portion 12; the convex lens 22 is disposed on the engaging portion 2111 by being engaged, fastened, or locked. The opaque tube body 21 is made of a heat dissipating material, such as a metal or a highly thermally conductive plastic material, by which the heat dissipation of the LED floodlight can be accelerated.

When the LED light source 100 is used by the user, the first light L1 passes through the convex lens 22, and a first light-emitting area A1 is formed on an illumination surface W (for example, a wall, a ceiling or a floor, etc.). The second light ray L2 is reflected by the inner wall of the opaque tube body 21 through the convex lens 22, and a second light-emitting area A2 is formed on the irradiation surface W. Wherein, when the focal length of the convex lens 22 is 1f, the distance from the convex lens 22 to the LED unit 14 is preferably 0.2f to 1f.

Next, please refer to FIGS. 2A to 4B for explaining various schematic views of the light-emitting regions on the irradiation surface W when the distance between the LED unit 14 and the center point C is different.

First, as shown in FIGS. 2A and 2B, when the second length S2 is close to 1/10 of the first length S1, the shape of the second light-emitting area A2 is a crescent shape; and, again, as in the 3A Figure and Figure 3B, when the second When the length S2 is close to 1/2 of the first length S1, the shape of the second light-emitting area A2' is elongated; and, as shown in FIGS. 4A and 4B, when the second length S2 is close to the When the first length S1, the shape of the second light-emitting area A2" is two connected crescent shapes, and the crescent shapes are arranged in the length direction; however, the above only illustrates the second length S2 and the The relationship of the first length S1 may actually be other ratios of the first length S1.

In summary, the present invention can be configured to provide different shapes for the light irradiated by the LED floodlight 100 by providing the LED unit 14 at different positions of the circuit board 13, thereby applying to nightlights and fine arts. The lamp, the atmosphere lamp or the column lamp, etc.; in addition, the color of the LED chip 141 can be set according to the needs of the user.

A specific embodiment of the LED floodlight 100 will be described below by way of illustration. As shown in FIGS. 5A and 5B, the circuit board 13 is provided with five LED units 14 for the illumination when the second length S2 of the LED unit 14 to the center point C is close to the first length S1. Each of the second light-emitting regions A2" of the face W may form a flower pattern; as shown in FIGS. 6A and 6B, the circuit board 13 is provided with three LED units 14 for each of the LED units 14 to the center point C. When the second length S2 is 1/2 of the first length S1, a triangular pattern is formed in each of the second light-emitting regions A2' of the irradiation surface W; as shown in FIGS. 7A and 7B, the circuit board 13 is provided with five LED unit 14, wherein the second length S2 of the two LED units 14 to the center point C is 1/2 of the first length S1, and the second length S2 of the other two LED units 14 to the center point C is 1/10 of the first length S1, the last LED The second length S2 of the unit 14 to the center point C is close to the first length S1. With the above design, each of the second light-emitting areas A2, A2', A2" of the irradiation surface W forms a heart-shaped pattern.

Referring to FIG. 1 , FIG. 8A and FIG. 8B , when the inner wall of the opaque tube 22 is polished, embossed or cast, the inner wall of the opaque tube 22 has a linear texture. Or a diagonal line (not shown); when the inner wall of the opaque tube 22 is a linear line, the second light L2 reflects the inner wall of the opaque tube 22 through the convex lens 22, and is formed on The second light-emitting area A2 of the irradiation surface W has a corrugation feeling of a straight strip, as shown in FIG. 8A, so that the light and shadow effect of the polar aurora can be simulated; when the inner wall of the opaque tube 22 is a diagonal line, After the second light ray L2 reflects the inner wall of the opaque tube 22 passing through the convex lens 22, the second illuminating area A2 formed on the illuminating surface W has a corrugated feeling of a diagonal line, as shown in FIG. 8B. Therefore, it can simulate the light and shadow effect of the polar aurora; in summary, the LED flood light of the present invention can simulate the light and shadow effect of the polar aurora by the above design, and thus can be applied to a night light, an art light, an atmosphere light or a column light. ...Wait.

Referring to FIG. 9, the design of the LED floodlight 200 is substantially the same as the design of the LED floodlight 100. The LED unit 14 has an angle D with the circuit board 13, and the LED chip 14 The emitted first light ray L1 faces in a direction away from the center point C of the circuit board 13. Wherein, the angle D ranges from 10° to 80°. When the angle of the angle D is larger, the brightness of the first light-emitting area A1 of the first light ray L1 formed on the illumination surface W is weaker, so that the first light-emitting area A1 becomes inconspicuous, so the user Only notice the second illuminating area on the illuminated surface W The shape formed by A2.

Next, referring to FIG. 10A and FIG. 10B, the appearance of the LED unit (ie, the plastic package) can be various shapes, such as: circular, rectangular, triangular, star, heart, or polygonal, etc. . As shown in FIG. 10A, the circuit board 13 is provided with a circular LED unit 14 and a heart-shaped LED unit 14H. The second length S2 of the LED units 14, 14H to the center point C is the same. a length S1 of 1/2, so that the irradiation surface W will form a circular first light-emitting area A1, a heart-shaped first light-emitting area A1H and a long-shaped second light-emitting area A2'; although not shown, In the present invention, the five LED units 14 of FIG. 7A can also be replaced with a heart shape so that the first light-emitting area and the second light-emitting area are both heart-shaped patterns.

Continuing to refer to FIG. 11A and FIG. 11B, the circuit board 13 is provided with three LED units 14', each of which has three LED chips, respectively, which are red light wafers 141'r, The green light wafer 141'g and the blue light wafer 141'b, the second length S2 of the LED unit 14' to the center point C is 1/2 of the first length S1, so when each of the LED units 14' When an LED chip simultaneously forms a light-emitting region on the irradiation surface W, as shown in FIG. 11B, there will be three red first light-emitting regions A1r, three green first light-emitting regions A1g, and three blue first portions. A light-emitting area A1b, three red second light-emitting areas A2'r, three green second light-emitting areas A2'g, and three blue light-emitting areas A2'b have unique color and shape combinations. In addition, although not shown, if the inner wall of the opaque tube of the LED floodlight has a straight line, in combination with the above design, the second illuminating region generated by the LED floodlight is more similar to the polar region. Aurora, so that users can see the light and shadow effects of polar aurora even if they are not in the polar.

Next, referring to FIG. 12A and FIG. 13A, the pedestal 10 of the LED floodlight 300 has a first LED unit 14A to a fifth LED unit 14E, which are disposed on the circuit board 13, and the pedestal 10 is further A controller 15 is included. The controller 15 is electrically connected to the circuit board 13 to control the illumination time of the LED chip 141 of the first LED unit 14A to the fifth LED unit 14E. More specifically, the controller 15 It is controlled by a control module and a drive module. For example, the controller 15 can simultaneously turn on and off the first LED unit 14A to the fifth LED unit 14E, and can also illuminate the first LED unit 14A to the fifth LED unit 14E respectively. The design allows the first light-emitting region and the second light-emitting region formed on the irradiation surface W to change in light and shape. Referring to FIG. 13B and Table 1, when the controller 15 is the No. 1 circuit, the first LED unit 14A to the fifth LED unit 14E are simultaneously lit, so there are five on the illumination surface W. a light-emitting area A1A, A1B, A1C, A1D, A1E and five second light-emitting areas A2A, A2B, A2C, A2D, A2E, thereby forming a circular pattern; when the controller 15 is a circuit No. 2, only the The first LED unit 14A, the third LED unit 14C and the fifth LED unit 14E are simultaneously illuminated, so that there are three first light-emitting areas A1A, A1C, A1E and three second light-emitting areas A2A on the illumination surface W. , A2C, A2E; when the controller 15 is the No. 3 loop, only the second LED unit 14B and the fourth LED unit 14D are simultaneously lit, so there are only two first illuminations on the illumination surface W. Area A1B, A1D and two second light emitting areas A2B, A2D. With the above design, the effect of light and shape change can be achieved, so that it can be effectively applied to art lamps, column lamps or night lamps.

Referring to FIGS. 12B and 14A, the LED unit 14'H of the LED floodlight 400 has a heart-shaped shape, and the LED unit 14'H has three LED chips, and the LED chips The red light wafer 141'r, the green light wafer 141'g, and the blue light wafer 141'b, respectively, and the base 10 further includes a controller 15 electrically connected to the circuit board 13 The illumination time of each of the LED chips of the LED unit 14'H is controlled. For example, the controller 15 can enable the red light chip 141'r, the green light chip 141'g, and the blue light wafer 141'b of the LED unit 14'H to be simultaneously turned on and off, and the LED unit 14' can be made. The red light-emitting wafer 141'r, the green light-emitting wafer 141'g, and the blue light-emitting wafer 141'b of H are respectively turned on or off. With the above design, the first light-emitting area and the second light-emitting area formed on the irradiation surface W can be made. Make a difference. Referring to FIG. 14B and Table 2, when the controller 15 is the circuit No. 1a, the red light chip 141'r, the green light chip 141'g and the blue light wafer 141'b of the LED unit 14'H are simultaneously lit. Therefore, there are three first light-emitting areas A1Hr, A1Hg, A1Hb and three second light-emitting areas A2"r, A2"g, A2"b on the illumination surface W; when the controller 15 is the circuit 2a, Only the red light wafer 141'r and the blue light wafer 141'b of the LED unit 14'H are simultaneously lit and lit at the same time, so there are two first light emitting on the illumination surface W. The area A1Hr, A1Hb and the two second light-emitting areas A2"r, A2"b; when the controller 15 is the circuit No. 3a, only the green light chip 141'g of the LED unit 14'H is lit, so There is only one first light-emitting area A1Hg and one second light-emitting area A2"g on the illumination surface W. By the above design, the effect of light change is achieved.

Finally, referring to FIG. 12C and Table 3, the LED flood light 500 has a first LED unit 14'A to a third LED unit 14'C, and the first LED unit 14'A to the third LED unit 14' C has three LED chips, respectively, the red light wafer 141'r, the green light chip 141'g and the blue light wafer 141'b, and the base 10 further includes a controller 15, which The controller 15 is electrically connected to the circuit board 13 to control the lighting time of each of the first LED unit 14'A to the third LED unit 14'C. As shown in Table 3, when the controller 15 is a circuit No. 1b, the first LED unit 14'A illuminates the red wafer 141'r, and the second LED unit 14'B illuminates the green wafer 141'g. The third LED unit 14'C illuminates the blue light wafer 141'b; when the controller 15 is the 2b circuit, the first LED unit 14'A illuminates the green light wafer 141'g, the second LED unit 14'B illuminates the blue light wafer 141'b, the third LED unit 14'C illuminates the red light wafer 141'r; when the controller 15 is the 3b circuit, the first LED unit 14'A lights up the blue light Wafer 141'b, the second LED unit 14'B illuminates the red wafer 141'r, the third LED unit 14'C illuminates the green light chip 141'g. With the above design, the effect of light changes is achieved.

In summary, the LED floodlight of the present invention can make the irradiated light form a special shape by the arrangement relationship between the LED unit and the center of the circuit board; furthermore, by using the inner portion of the opaque tube After the wall is polished, engraved or cast, the irradiated light can be mimicked by the polar aurora light effect; furthermore, the LED floodlight can be changed in color and shape by the design of the controller. effect.

The invention has been described above in terms of the preferred embodiments, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the invention. It should be noted that variations and permutations equivalent to those of the embodiments are considered to be within the scope of the invention. Therefore, the scope of protection of the present invention is defined by the scope of the patent application.

10‧‧‧ Pedestal

11‧‧‧Power connection

12‧‧‧ Department of heat dissipation

13‧‧‧Circuit board

14,14’, 14H, 14’H‧‧‧LED units

14A, 14’A‧‧‧ first LED unit

14B, 14’B‧‧‧second LED unit

14C, 14’C‧‧‧ third LED unit

14D‧‧‧4th LED unit

14E‧‧‧ fifth LED unit

141‧‧‧LED chip

141’r‧‧‧Red Wafer

141’g‧‧‧Green Wafer

141’b‧‧‧Blue Wafer

15‧‧‧ Controller

20‧‧‧shade

21‧‧‧ opaque tube

211‧‧‧ first end

2111‧‧‧Clock Department

212‧‧‧ second end

22‧‧‧ convex lens

100-500‧‧‧LED flood light

A1, A1H‧‧‧ first light-emitting area

A1r, A1g, A1b‧‧‧ first light-emitting area

A1A, A1B, A1C‧‧‧ first light-emitting area

A1Hr, A1Hg, A1Hb‧‧‧ first light-emitting area

A1D, A1E‧‧‧ first light-emitting area

A2, A2’, A2”‧‧‧second light-emitting area

A2'r, A2'g, A2'b‧‧‧ second light-emitting area

A2"r, A2"g, A2"b‧‧‧second light-emitting area

A2A, A2B, A2C‧‧‧ second light-emitting area

A2D, A2E‧‧‧second light-emitting area

C‧‧‧ center point

D‧‧‧ angle

E‧‧‧ edge

L1‧‧‧First light

L2‧‧‧second light

S1‧‧‧ first length

S2‧‧‧ second length

W‧‧‧ illuminated surface

Figure 1 is a schematic view of an LED floodlight of the present invention.

Figure 2A is a first embodiment of the relative position of the LED unit to the center point of the board.

2B is a schematic view showing the first light-emitting region and the second light-emitting region irradiated to the irradiation surface in the state of the first embodiment.

Figure 3A is a second embodiment of the relative position of the LED unit to the center point of the board.

Fig. 3B is a schematic view showing the first light-emitting region and the second light-emitting region irradiated to the irradiation surface in the state of the second embodiment.

Figure 4A is a third embodiment of the relative position of the LED unit to the center point of the board.

Fig. 4B is a schematic view showing the first light-emitting region and the second light-emitting region irradiated to the irradiation surface in the case of the third embodiment.

Figure 5A is a configuration diagram of five LED units near the edge of the board.

Fig. 5B is a schematic view showing the first light-emitting region and the second light-emitting region when the LED flood light of Fig. 5A is irradiated onto the irradiation surface.

Figure 6A is a configuration diagram in which three LED units are located between the center point and the edge of the board.

Fig. 6B is a schematic view showing the first light-emitting region and the second light-emitting region when the LED flood light of Fig. 6A is irradiated onto the illuminated surface.

Fig. 7A is a configuration diagram in which five LED units are disposed on a circuit board.

Fig. 7B is a schematic view showing the first light-emitting region and the second light-emitting region when the LED flood light of Fig. 7A is irradiated onto the illuminated surface.

Fig. 8A is a schematic view showing the second light-emitting region irradiated to the irradiation surface when the inner wall of the opaque tube body has a straight line.

Fig. 8B is a schematic view showing the second light-emitting region irradiated to the irradiation surface when the inner wall of the opaque tube body has a diagonal line.

Figure 9 is a schematic diagram showing the angle between the LED unit and the circuit board.

Fig. 10A is a schematic view showing the shape of the LED unit.

Fig. 10B is a schematic view showing the first light-emitting region and the second light-emitting region when the LED flood light of Fig. 10A is irradiated on the irradiation surface.

Figure 11A is a schematic diagram of three LED cells having three LED wafers, respectively.

Fig. 11B is a schematic view showing the first light-emitting region and the second light-emitting region when the LED flood light of Fig. 11A is irradiated onto the irradiation surface.

12A through 12C are various embodiments of the LED floodlight of the present invention having a controller.

Fig. 13A is a configuration diagram in which the LED unit of Fig. 12A is disposed on a circuit board.

Fig. 13B is a schematic view showing the first light-emitting region and the second light-emitting region when the LED flood light of Fig. 13A is irradiated onto the illuminated surface.

Fig. 14A is a configuration diagram in which the LED unit of Fig. 12B is disposed on a circuit board.

Fig. 14B is a schematic view showing the first light-emitting region and the second light-emitting region when the LED flood light of Fig. 14A is irradiated onto the illuminated surface.

100‧‧‧LED flood light

10‧‧‧ Pedestal

11‧‧‧Power connection

12‧‧‧ Department of heat dissipation

13‧‧‧Circuit board

14‧‧‧LED unit

141‧‧‧LED chip

20‧‧‧shade

21‧‧‧ opaque tube

211‧‧‧ first end

2111‧‧‧Clock Department

212‧‧‧ second end

22‧‧‧ convex lens

A1‧‧‧First light-emitting area

A2‧‧‧second light-emitting area

C‧‧‧ center point

E‧‧‧ edge

L1‧‧‧First light

L2‧‧‧second light

S1‧‧‧ first length

S2‧‧‧ second length

W‧‧‧ illuminated surface

Claims (18)

An LED flood light comprising a base and a lamp cover, wherein the base comprises: a power connection portion; a heat dissipation portion connected to the power connection portion; and a circuit board electrically connected to the circuit board The power connection portion, a center point of the circuit board to an edge of the circuit board is a first length; and at least one LED unit is disposed on the circuit board, and the center point of the LED unit to the circuit board is a second length, the second length is at least 1/10 of the first length, and the LED unit has at least one LED chip to emit a first light and a second light; and the light cover comprises: an impervious The light pipe body has a first end and a second end, the first end has a latching portion, the second end is connected to the heat dissipating portion, and a convex lens is disposed on the engaging portion The first light passes through the convex lens to form a first light-emitting region, and the second light is reflected by the inner wall of the light-impermeable tube body to form a second light-emitting region. The LED floodlight of claim 1, wherein the shape of the second light-emitting region is a crescent shape when the second length is close to 1/10 of the first length. For example, the LED flood light of the first application of the patent scope, wherein When the length is close to 1/2 of the first length, the shape of the second light-emitting region is elongated. The LED flood light of claim 1, wherein when the second length is close to the first length, the shape of the second light-emitting area is two connected crescent shapes, and the crescent shapes They are arranged in the length direction. The LED flood light of claim 1, wherein the inner wall of the opaque tube body is polished, embossed or cast. The LED floodlight of claim 5, wherein the inner wall of the opaque tube has a straight or diagonal line. The LED floodlight of claim 1, wherein the LED unit has an angle with the circuit board, and the first light emitted by the LED chip faces away from a center point of the circuit board. The LED floodlight of claim 7, wherein the included angle ranges from 10° to 80°. The LED floodlight of claim 1, wherein the LED unit has a geometric shape. The LED flood light of claim 9, wherein the LED unit has a circular shape or a heart shape. The LED floodlight of claim 1, wherein the focal length of the convex lens is 1f, and the distance from the convex lens to the LED unit is 0.2f to 1f. The LED floodlight of claim 1, wherein the LED wafer is a yellow wafer, a white wafer, a red wafer, a green wafer or a blue wafer. The LED floodlight of claim 1, wherein the LED unit has three LED wafers, which are a red wafer, a green wafer, and a blue wafer, respectively. The LED flood light of claim 1, wherein when the base has a plurality of LED units, the base further includes a controller electrically connected to the circuit board to control each of the The illumination time of the LED chip of the LED unit. The LED flood light of claim 1, wherein when the LED unit has a plurality of LED chips, the base further includes a controller electrically connected to the circuit board to control each of the The illumination time of the LED chip. The LED floodlight of claim 1, wherein the base has five LED units. The LED flood light of claim 1, wherein the opaque tube system is made of a heat dissipating material. The LED flood light of claim 17, wherein the opaque tube system is a metal or a highly thermally conductive plastic material.