TW201329401A - LED bulb with a structure of expansion of side projection light - Google Patents

Abstract

This present invention relates to an LED bulb with a structure of expansion of side projection light.TheLED bulb includes a transparent lamp seat, a transparent lampshade, a light emitting module, and a reflective plate. A lamp head is mounted on a lower end of the lamp seat. A chamber is defined by the lamp seat and the lampshade, and a driver is mounted in a lower portion of the chamber. The light emitting module is mounted in the chamber and has a substrate and severalLEDs (SMD /chip) provided on the substrate. The light emitting module is electrically connected with the driver, so that the light emitting module can be driven to project light towards the lower end of the lamp seat. The reflective plate is mounted in the chamber and located between the light emitting module and the lamp head. When the light emitting module projects light towards the lower end of the lamp seat, it will be reflected by the reflective plate. The LEDs of the LED bulb of the present invention can provide a downward direct projection light and a side projection light formed by reflection of the reflective plate, achieving the expansion of side projection angle illumination of the LED bulb.

Description

LED bulb with enlarged edge light structure

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an LED light bulb, and more particularly to an enlarged edge light-emitting structure of a reverse-projection type LED bulb in which the lamp head is directed upward and the light is directed downward.

With the international response to the green energy policy, all advanced countries have set the exit period of tungsten filament bulbs. LED bulbs are also included in the market for tungsten filament bulbs.

The light source of the conventional tungsten filament bulb is 360° projection light. However, the bulb made by LED (SMD, wafer) as the light source can only be used for one-way projection light. If such a unidirectionally projected LED light bulb is to be used on a standing lamp, a desk lamp, a wall lamp or a bedside lamp, the direction of the projected light can only project the beam in the direction of the ceiling, and the projection light in the direction of the floor can only be placed against it. Irradiation of the reflected light on the slope of the lampshade of the standing lamp, table lamp, wall lamp or bedside lamp clearly illuminates the problem of insufficient illumination. Therefore, after the exit of the tungsten filament bulb, this type of luminaire can only be replaced by the HCFL, CCFL type of energy-saving bulb.

However, HCFL and CCFL type energy-saving bulbs have ultraviolet rays, electromagnetic waves and radiation, which are harmful to the human body. If they are used close to the body, they are more harmful; and they contain mercury substances, argon and antimony, among which mercury is used for human brain, kidney and skin. The damage is more lethal to the pollution of the land. In addition, the lamp body of HCFL and CCFL is made of glass material, which is extremely easy to be broken. When broken, the mercury metal may escape. If the human body touches or inhales, it will cause lesions of the brain and kidney. In order to decompose the toxicity of HCFL and CCFL scrap, the cost is very large and does not meet the environmental protection needs. In addition, HCFL and CCFL bulbs, like fluorescent lamps, are discharged by electrodes striking mercury gas, and the generated beam is discontinuous light, which causes eye vision and is not conducive to reading.

Therefore, how to design LED bulbs to meet the use of lamps such as vertical lamps, desk lamps, wall lamps or bedside lamps, and to increase the range of projection light, is an urgent task for LED manufacturers, and it is also promoting environmental protection and energy conservation. The necessary means.

In view of the above problems, an object of the present invention is to provide an LED bulb having an enlarged edge-emitting structure, comprising a transparent lamp holder, a transparent lamp housing, a support plate, a light-emitting module, and a reflector. The transparent lamp holder comprises a lower end and an upper end. The lower end of the lamp holder is mounted with a lamp cap. The upper end of the lamp holder forms an opening, and a driver is installed inside the lamp holder. The transparent lamp envelope is coupled to the upper end of the lamp holder and encloses the opening such that the lamp holder and the lamp housing together define a chamber. The support plate is supported in the chamber, and the support plate includes an upper end surface facing the lamp housing and a lower end surface facing the lamp cap. The light emitting module is disposed on the lower end surface of the support plate and has a plurality of LEDs. The light emitting module is electrically connected to the driver such that the LED can be driven to project light toward the lower end of the lamp holder. The reflector is disposed in the chamber and is located between the light-emitting module and the lamp head. When the LED projects light toward the lower end of the lamp holder, the LED is reflected by the reflector to generate side-projected light. The LED of the LED lamp of the invention can form the downward direct projection light and the side-projection light formed by the reflective projection of the reflector, thereby achieving the expansion of the edge angle illumination of the LED lamp.

1 to 4 show an LED bulb 1 according to a first embodiment of the present invention. The LED bulb 1 comprises a transparent lamp holder 11, a transparent lamp housing 12, a lighting module 13, and a reflector 14. The socket 11 includes a lower end 117 and an upper end 114. The lower end 117 of the socket 11 is mounted with a base 10, and the upper end 114 of the socket 11 defines an opening 113. The lamp housing 12 is coupled to the upper end 114 of the socket 11 and closes the opening 113, so that the socket 11 and the lamp housing 12 together define a chamber 110. The lower portion of the chamber 110 is mounted with a driver 17, and the upper end 114 of the socket 11 is the inner wall. An annular step 111 is provided, and a support plate 112 is disposed in the chamber 110. The support plate 112 is supported by the step 111 in the chamber 110 and includes an upper end surface 115 facing the lamp housing 12 and a lower end surface 116 facing the lamp cap 10. In addition, the driver 17 can be provided with a line compatible with the dimming structure used for the tungsten filament bulb.

The light-emitting module 13 has a substrate 131 and a plurality of LEDs (SMD/wafer) 132 disposed on the substrate 131. The substrate 131 is coupled to the lower end surface 116 of the support plate 112. The light module 13 is electrically connected to the driver 17, so that the LED 132 can be driven to project light toward the lower end 117 of the socket 11.

The reflector 14 is disposed in the chamber 110 and is located between the light emitting module 13 and the base 10. In this embodiment, the reflector 14 includes a flat portion 141 at the periphery and a tapered portion 142 having a tapered projection and located in the middle. Further, the center of the reflector 14 has a through hole through which the wire can pass. 143. In addition, the inner wall of the lower end 117 of the socket 11 is provided with another annular step 118 for providing support of the reflector 14 which is reflected by the reflector 14 when the LED 132 projects light toward the lower end 117 of the socket 11.

As shown in FIG. 4, the LED (SMD/wafer) 132 of the light-emitting module 13 of the LED lamp 1 of the present invention can form a downward direct projection light (A) and an edge-emitting light (B) formed by the reflective projection 14 (C), wherein the slope portion 142 of the reflector 14 reflects the light of the LED 132 to form an edge-emitting light (B), and the plane portion 141 of the reflector 14 reflects the light of the LED 132 to form an edge-emitting light (C), thereby achieving expansion of the LED lamp 1. The effect of side angle lighting.

FIG. 5 shows an LED bulb 1 according to a second embodiment of the present invention, which differs from the first embodiment in that the bulb 1 further includes a heat dissipating body 15 disposed in the chamber 110 and coupled to the translucent support plate. The lower end surface 116 of 112. The heat sink 15 includes an upper surface 151 facing the lamp housing 12 and a lower surface 152 facing the base 10. The upper surface 151 of the heat sink 15 may be coupled to the support plate 112 using a fixing member (not shown) such as a screw. The substrate 131 is mounted on the lower surface 152 of the heat sink 15 . The heat sink 15 determines whether or not to set according to the heat of the LED 132.
Fig. 6 shows a bulb 1 of an LED according to a third embodiment of the present invention, which differs from the second embodiment in that the peripheral portion and the intermediate portion of the reflector 14 form a tapered convex portion 142. That is, the size of the area of the plane portion and the slope portion of the reflector 14 can be changed in accordance with the light of the LED 132. In addition, in FIG. 6, the slope portion 142 of the reflecting plate 14 reflects the light of the LED 132 to form the sidelights (B) and (C), and the effect of enlarging the side angle illumination of the LED lamp 1 is achieved.

7 and 8 show an LED bulb 1 of a fourth embodiment of the present invention, which differs from the third embodiment in the slope of the slope portion 142 of the reflector 14 and the number of LEDs 132. That is, the slope of the slope portion of the reflector 14 can be changed according to the light of the LED 132, and the number and arrangement of the LEDs 132 can also be changed according to environmental needs.

9 and FIG. 10 show an LED bulb 1 according to a fifth embodiment of the present invention, which is mainly different from the second embodiment in that the bulb 1 further includes a second reflector 16, and the second reflector 16 is mounted under the substrate 131. The end face, and the second reflector 16 is provided with a plurality of spaced apart perforations 161 for providing the LED 132 to pass through. It is shown in Fig. 9 that the second reflecting plate 16 can reflect the reflected light of the reflecting plate 14 to enhance the blooming effect.

Figure 11 shows an LED bulb 1 of a sixth embodiment of the present invention, which differs from the fifth embodiment in that a central portion of the second reflector 16 is provided with a through hole 161 for providing the LED 132 to pass therethrough. In addition, in FIG. 11, the light reflecting the LED 132 of the reflector 14 is formed to form the sidelights (B) and (C), and the effect of enlarging the angle of illumination of the side of the LED lamp 1 is achieved.
The LED bulb 1 of each embodiment of the present invention is suitably applied to the stand lamp 21 of FIG. 12, the wall lamp 22 of FIG. 13, the table lamp 23 of FIG. 14, and the street view lights 24, 25 of FIGS. 15 and 16. The structure of the enlarged side-angle light of the LED bulb 1 of the present invention cooperates with the reflection of the vertical lamp 21, the wall lamp 22, the lampshade of the lamp 23 and the semi-transparent outer lamp shell of the trail landscape lamp 24, 25 to provide the lamp in the downward direction. Enough light required for the sideways direction.

17 shows an LED bulb 1 according to a seventh embodiment of the present invention, which differs from the first embodiment in that the bulb 1 further includes a second illumination module 18 such that the bulb 1 has an upper projection light (D) and is constructed as A light-emitting effect that can form a 360° full-angle. The second light emitting module 18 has a second substrate 181 and a plurality of LEDs (SMD/wafer) 182 disposed on the second substrate 181. The second substrate 181 is coupled to the upper end surface 115 of the support plate 112. The second light emitting module 18 is electrically connected to the driver 17 such that the LED 182 can be driven to project light toward the lamp housing 12.

The LEDs 132 and 182 of the light-emitting modules 13 and 18 respectively form the lower projection light and the upper projection light, so that the bulb 1 of FIG. 17 can be applied to the vertical lamp, the wall lamp, the table lamp and the trail landscape lamp, and is also suitable for reflecting light. The downlighting luminaire of the bowl is used, such as the chandelier 26 of Figure 18 and the walkway light 27 of Figure 19. Here, reference numeral 191 in Fig. 18 denotes direct light of the LED 182 in Fig. 17, reference numeral 192 denotes reflected light which is projected toward the ground formed by the projected light of the LED 132 toward the reflective bowl, and reference numeral 193 denotes that the projected light of the LED 132 is reflected. The side light that is reflected by the board 14 and projected outside the reflective bowl, reference numeral 194, represents the side-reflected light that the projected light of the LED 132 is reflected by the reflector 14 and projected into the reflective bowl. These rays combine to form an illuminance and an angle that is multiplied by the original LED light, which increases the illumination of the environment.

FIG. 20 shows an LED bulb 1 of an eighth embodiment of the present invention, which differs from the first embodiment in that the support plate 112 carried on the step 111 is a single-sided circuit substrate, and the LED 132 of the illumination module 13 is disposed in The lower end surface of the circuit substrate.

FIG. 21 shows an LED light bulb 1 according to a ninth embodiment of the present invention, which differs from the eighth embodiment in that the support plate 112 carried on the step 111 is a double-sided circuit substrate, and the LED 132 of the light-emitting module 13 is disposed in The lower end surface of the circuit substrate and the LED 182 of the second light emitting module 18 are disposed on the upper end surface of the circuit substrate.

22-27 show six other embodiments of the reflector 14 of the present invention; wherein the reflector 14 of Fig. 22 has two slopes 142 of different slopes, and the slope 142 of the reflector 14 of Fig. 23 is concavely curved. The inclined surface portion 142 of the reflecting plate 14 of Fig. 24 is formed into a convex arc shape, and the inclined surface portion 142 of the reflecting plate 14 of Fig. 25 and Fig. 26 is formed into a concave arc shape having a different curvature, and the reflecting plate 14 of Fig. 27 is formed into a flat plate type. state.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be covered by the present invention.

1. . . light bulb

10. . . Lamp head

11. . . Lamp holder

110. . . Room

111. . . Step

112. . . Support plate

113. . . Opening

114. . . Upper end

115. . . Upper end

116. . . Lower end

117. . . Lower end

118. . . Step

12. . . lampshade

13. . . Light module

131. . . Substrate

132. . . led

14. . . Reflector

141. . . Plane department

142. . . Inclined face

143. . . perforation

15. . . Heat sink

151. . . Upper surface

152. . . lower surface

16. . . Reflector

161. . . perforation

17. . . driver

18. . . Light module

181. . . Second substrate

182. . . led

191. . . Direct light

192. . . reflected light

193. . . Side shot

194. . . Side shot reflected light

twenty one. . . Vertical light

twenty two. . . wall lamp

twenty three. . . table lamp

24.25. . . Trail landscape light

26. . . chandelier

27. . . Trail light

Figure 1 is a schematic view of a light bulb in accordance with a first embodiment of the present invention.

2 is a plan view of the light emitting module of FIG. 1.

Figure 3 is a plan view of the reflector of Figure 1.

4 is a schematic view of the light projection of the bulb of FIG. 1.

Figure 5 is a schematic view of a light bulb in accordance with a second embodiment of the present invention.

Figure 6 is a schematic view of a light bulb in accordance with a third embodiment of the present invention.

Figure 7 is a schematic view of a light bulb in accordance with a fourth embodiment of the present invention.

Figure 8 is a plan view of the light emitting module of Figure 7.

Figure 9 is a schematic view of a light bulb in accordance with a fifth embodiment of the present invention.

Figure 10 is a plan view of the second reflector of Figure 9.

Figure 11 is a schematic view of a light bulb in accordance with a sixth embodiment of the present invention.

Figure 12 is a schematic view of the bulb of the present invention used in a standing lamp.

Figure 13 is a schematic view of the bulb of the present invention used in a wall light.

Figure 14 is a schematic view of the bulb of the present invention used in a desk lamp.

Figure 15 is a schematic view of a bulb used in a one-step landscape lamp of the present invention.

Figure 16 is a schematic view of a light bulb used in another step landscape lamp of the present invention.

Figure 17 is a schematic view of a light bulb in accordance with a seventh embodiment of the present invention.

Figure 18 is a schematic view of the bulb of the present invention used in a chandelier.

Figure 19 is a schematic illustration of the use of a bulb of the present invention in a walkway light.

Figure 20 is a schematic view of a bulb of an eighth embodiment of the present invention.

Figure 21 is a schematic view of a light bulb of a ninth embodiment of the present invention.

Figure 22 is a schematic illustration of another embodiment of a reflector for a light bulb of the present invention.

Figure 23 is a schematic illustration of another embodiment of a reflector for a light bulb of the present invention.

Figure 24 is a schematic illustration of another embodiment of a reflector for a light bulb of the present invention.

Figure 25 is a schematic illustration of another embodiment of a reflector for a bulb of the present invention.

Figure 26 is a schematic illustration of another embodiment of a reflector for a light bulb of the present invention.

Figure 27 is a schematic illustration of another embodiment of a reflector for a light bulb of the present invention.

1. . . light bulb

10. . . Lamp head

11. . . Lamp holder

110. . . Room

111. . . Step

112. . . Support plate

113. . . Opening

114. . . Upper end

115. . . Upper end

116. . . Lower end

117. . . Lower end

118. . . Step

12. . . lampshade

13. . . Light module

131. . . Substrate

132. . . led

14. . . Reflector

141. . . Plane department

142. . . Inclined face

143. . . perforation

17. . . driver

Claims (8)

An LED bulb with an enlarged edge-emitting structure, comprising:
a transparent lamp holder comprising a lower end and an upper end, a lower end of the lamp holder is mounted with a lamp cap, an upper end of the lamp holder forms an opening, and a driver is mounted inside the lamp holder;
a transparent lamp housing coupled to the upper end of the lamp holder and closing the opening such that the lamp holder and the lamp housing together define a chamber;
a support plate supported in the chamber, the support plate comprising an upper end surface facing the lamp housing and a lower end surface facing the lamp cap;
a light-emitting module is disposed on a lower end surface of the support plate and has a plurality of LEDs. The light-emitting module is electrically connected to the driver such that the LED can be driven to project light toward a lower end of the lamp holder; and a reflector It is disposed in the chamber and is located between the light-emitting module and the lamp cap. When the LED projects light toward the lower end of the lamp holder, the LED is reflected by the reflector to generate side-projected light.
The LED light bulb of claim 1, wherein the light emitting module has a substrate, the substrate is disposed on a lower end surface of the support plate, and the LED is disposed on the substrate.
The LED light bulb according to claim 2, further comprising a heat dissipating body disposed in the housing and supported by the supporting plate, the heat dissipating body comprising an upper surface facing the lamp housing and facing the lamp cap The surface of the light-emitting module is disposed on a lower surface of the heat-dissipating body, and an inner wall of the upper end of the lamp holder is provided with a step, and the support plate is mounted on the step.
The LED light bulb according to claim 2, wherein the reflector comprises a flat portion at a periphery and a tapered portion in the middle of the inclined portion, and the size of the flat portion and the inclined portion can be determined according to the LED. The light is changed.
The LED light bulb according to Item 4 of the patent application, wherein the inclined surface portion is formed in a concave arc shape or a convex arc shape.
According to the LED bulb of claim 4, the inner wall of the lower end of the socket is provided with an annular step for providing the reflector support, and the center of the reflector has a through hole through which the wire can pass.
The LED light bulb according to the fourth aspect of the patent application further includes a second reflector, the second reflector is mounted on the lower end surface of the substrate, and the second reflector is provided with a through hole for providing the LED to pass through.
The LED light bulb of claim 4 further includes a second light emitting module, the second light emitting module having a second substrate and a plurality of LEDs disposed on the second substrate, the second substrate being bonded to The second end of the support plate is electrically connected to the driver, so that the LED of the second illumination module can be driven to project light toward the lamp housing.