WO2013102363A1 - Wide-angle led illuminating lamp - Google Patents

Description

Large angle LED lighting Technical field

 The present invention relates to lighting fixtures, and more particularly to a high angle LED lighting fixture.

 Background technique

 Since LEDs have been widely used in the field of lighting as a fourth-generation light source, people are constantly exploring a way to overcome LEDs. The problem of small light distribution angle. A large number of large-angle LED lamp structures have emerged. However, the usual practice is to put the LED The light source is placed on a façade so that the light source can distribute the light as much as possible to the circumference of the illuminator. For example, the disclosure date is June 16, 2010, and the patent number is 200920208562.X. Chinese invention patent reveals a multi-faceted scattered LED lamp, the LED The lamp includes a lamp cover, a heat dissipation base, a lamp base, at least one substrate, and a plurality of light emitting diodes. The light emitting diodes are respectively accommodated in the lamp cavity formed by the lamp cover and the heat dissipation base, and further include: a polyhedral bracket disposed on the lamp housing A lamp cavity formed by the lamp cover and the heat dissipation base, and a plurality of substrates, one surface of which is respectively connected to each surface of the polyhedral bracket, and the other surface is respectively connected to the light emitting diode. Multi-faceted scattering LED lights enable high-angle illumination.

 However, the multi-faceted scattering LED The lamp needs to be provided with a polyhedral bracket, a substrate is arranged on each of the façades of the bracket, and the LED is soldered on the façade substrate, which makes the multi-faceted scattering LED Lamp manufacturing processes are complex and inconvenient to assemble and produce.

 Summary of the invention

 In view of this, it is necessary to provide a high-angle LED illuminator that is simple in structure and easy to assemble.

 The technical solution adopted by the invention is: a large-angle LED illumination lamp, comprising a lamp cap and a plurality of LEDs a light source and a bulb shell, the top surface of the lamp cap is provided with a substrate, and further comprises a light distribution ring, wherein the light distribution ring comprises a fixed end disposed at the bottom portion and an outer expansion end disposed at the top, the fixed end being connected to the top surface of the substrate, LED light source includes multiple inner sides An LED light source and a plurality of outer LED light sources, the inner LED light source being disposed on a top surface of the substrate inside the light distribution ring, the outer LED a light source is disposed around a top surface of the substrate disposed outside the light distribution ring, and a light reflecting layer is disposed on an outer wall of the light distribution ring, and the light reflecting layer is used for the outer LED The light from the light source is reflected toward the bottom of the bulb shell in a direction that is biased toward the base.

 Compared with the prior art, the large angle LED The illuminating lamp is provided with a light distribution ring with a reflective layer on the outer wall, and the light distribution ring is fixed on the substrate on the top surface of the lamp cap. A plurality of LED light sources are respectively disposed inside and outside the light distribution ring. Thereby making these inner LEDs The light emitted by the light source is emitted toward the bulb casing; and the light emitted by the outer LED light sources is reflected by the reflective layer of the outer wall of the light distribution ring, and is reflected toward the bottom of the bulb shell toward the bottom of the bulb shell. , illuminate the bottom of the bulb shell, so that the light distribution angle of the whole lamp reaches 270 °. Since the high-angle LED illumination only needs to be provided on the substrate, the light distribution ring and the LED The light source eliminates the need to provide a light source on the side wall of a polyhedral lamp holder, thereby simplifying the structure, having the advantages of simple structure and easy assembly.

 DRAWINGS

 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded perspective view of a first embodiment of a high angle LED illuminator of the present invention.

 Figure 2 is a front elevational view of the assembled high-angle LED illuminator shown in Figure 1.

 Figure 3 is a schematic cross-sectional view taken along line A-A of Figure 2.

Figure 4 is a top view of the high-angle LED illuminator shown in Figure 1 with the lamp cover removed.

Fig. 5 is a light distribution curve diagram of the first embodiment of the high angle LED illumination lamp of the present invention without a light distribution ring.

Fig. 6 is a light distribution graph of the first embodiment of the high angle LED illumination lamp of the present invention with a light distribution ring.

 detailed description

 1 is an exploded perspective view of a first embodiment of a high angle LED illuminator 100 of the present invention, the high angle LED illuminator 100 The utility model comprises a base 10, a substrate 20, a light distribution ring 30, a plurality of inner LED light sources 40, a plurality of outer LED light sources 50, a reflection sheet 60 and a bulb shell 70. The substrate 20 is disposed at one end of the base 10, and the other end of the base 10 is electrically connected to a socket (not shown). The light distribution ring 30 is disposed on the substrate 20. These inner LED lights 40 The outer LED light source 50 is disposed outside the light distribution ring 30 on the inner side of the light distribution ring 30. The retroreflective sheeting 60 is disposed on the substrate 20, the bulb shell 70 and the lamp cap 10 The connection forms a cavity for receiving the substrate 20, the light distribution ring 30, the inner LED light sources 40, the outer LED light sources 50, and the retroreflective sheeting 60. The bulb shell 70 Light scattering material.

 Referring to Figures 1 and 3, the top surface of the base 10 is provided with a cylindrical projection 12 . The substrate 20 Made of heat-dissipating material. The substrate 20 has a disk-shaped structure. The bottom surface of the substrate 20 is attached to the top surface of the projection 12. The bottom of the bulb case 70 is fixed to the bottom of the boss 12, and the projection 12 The height ratio to the bulb case 70 ranges from 0.06 to 0.18. The protrusion 12 is used for raising the substrate 20 and the light distribution ring 30 and the inner LED light source disposed on the substrate 20 40 and the outer LED light source 50 to prevent the outer LED light source 50 from being too close to the bottom of the bulb shell 70, so that the LED illuminator 100 bulb shell 70 A brighter bright area appears at the bottom.

 Please refer to Figure 1 and Figure 4. The light distribution ring 30 has a flared structure, and the height of the light distribution ring 30 and the light distribution ring 30 The ratio of the diameter of the flared end ranges from 0.4 to 0.8. The light distribution ring 30 is provided with a fixed end 31, an extended end 32, an inner wall 33, three fixing lugs 34 and an outer wall 35. . The fixed end 31 of the light distribution ring 30 has a diameter smaller than the diameter of the outer end 32 of the light distribution ring 30. The fixing lugs 34 are equally spaced apart from the fixed end of the light distribution ring 30. On the inner side, the light distribution ring 30 is fixed to the middle of the substrate 20 by these fixing lugs 34. The outer wall 35 is provided with a first outer wall section 352 and a second outer wall section 354. The first outer wall section The 352 is substantially perpendicular to the substrate 20, and the second outer wall segment 354 is a curved structure, and the angle between the tangent to each point on the curved surface and the substrate 20 is less than 45°. The outer wall of the light ring 30 35 A reflective layer 356 is also disposed thereon, and the reflective layer 356 is disposed adjacent to the outer wall 35 such that the contours of the two are uniform. The reflective layer 356 is used to be disposed on the outer LED light source 50 The emitted light is reflected toward the bottom of the bulb case 70 in a direction biased toward the base 10 to illuminate the bottom of the bulb case 70.

 Please refer to Figure 4. A total of 9 of these inner LED light sources 40 are used for the substrate 20 The center of the center is the center of the light distribution ring 30 at equal angular intervals. The inner LED light sources 40 are respectively disposed near the inner wall 33 of the light distribution ring 30, and the light distribution ring 30 The inner walls 33 are equally spaced.

 Please refer to Figure 3. These outer LED light sources 50 have a total of 11 (not shown) around the light ring 30 Arranged at equal angular intervals on the substrate 20 outside the light distribution ring 30. The flared end 32 of the light distribution ring 30 has a larger diameter than the outer LED light sources 50. The maximum inner diameter of the arrangement. This ensures that the outer LED light sources 50 are respectively disposed under the front projection surface of the light distribution ring 30 such that the outer LED light sources 50 Most of the emitted light can be incident on the outer wall 35 of the light distribution ring 30. These outer LED light sources 50 have a lower illumination angle than these inner LED light sources 40. This makes these inner LEDs The light emitted by the light source 40 is distributed as widely as possible in the direction of the bulb shell 70, and the light from the outer LED light source 50 is concentrated as much as possible on the reflective layer of the halo ring 356. The upper light distribution is more uniform and the light extraction efficiency is higher.

 Please refer to Figure 3. The surface of the retroreflective sheeting 60 is provided with a reflective material. The retroreflective sheeting 60 has a disk-like structure, and the reflecting sheet 60 Attached to the top surface of the substrate 20, the outer LED light sources 50 are located above the reflective sheet 60.

 In operation, the light from the inner LED light source 40 is directed onto the bulb housing 70 through the bulb housing 70. Divergence into the external space. The light from the outer LED light source 50 is incident on the light reflecting layer 356 of the light distribution ring 30, and the reflection of the light reflecting layer 356 causes the light to face the large angle. The peripheral side of the LED illuminator 100 is emitted in a direction biased toward the base 10. However, please refer to FIG. 3 and FIG. 4, since a part of the reflective layer 356 of the light distribution ring 30 is disposed on these outer sides. Directly above the LED light source 50, a portion of the light from the outer LED light source 50 is reflected by the light reflecting layer 356 to be emitted toward the substrate 20. Therefore, on the substrate 20 A retroreflective sheeting 60 is disposed thereon such that the portion of the light is reflected by the retroreflective sheeting 60 and is emitted toward the bulb shell 70 of the high angle LED illuminating lamp 100. In addition, due to the light distribution ring 30 The outer wall of the fixed end 33 is provided with a first outer wall section 352 such that light having a relatively large illuminating angle can pass through the first outer wall section 352 toward the bulb shell 70. External reflection, thereby enhancing the luminous flux of the whole lamp. And if the first outer wall section 352 is inclined at other angles with respect to the substrate 20, the light irradiated to the first outer wall section 352 is caused to be on the substrate and the first outer wall section. A loop is formed between 352 and the bulb case 70 cannot be ejected.

 Please refer to Figure 5 and Figure 6. Figure 5 is a high angle LED illuminator of the present invention 100 The first embodiment does not have a light distribution curve with a light distribution ring. The high angle LED illuminator has a light distribution angle of 162 °. Figure 6 is a high angle LED illuminator of the present invention 100 The light distribution curve of the first embodiment with a light distribution ring. The figure shows that the high-angle LED illuminator 100 has a light distribution angle of 270 ° when the halo ring 30 is installed. It can be seen that the light distribution ring 30 is installed. The light distribution angle of the LED illuminator 100 is increased by 108°, so that only the LED light source 100 is mounted on the substrate 20 Achieve large angles of illumination.

 In summary, the high-angle LED illuminator 100 is provided with a light distribution ring with a reflective layer 356 on the outer wall. The light distribution ring 30 is fixed to the substrate 20 on the top surface of the base 10. A plurality of LED light sources are respectively disposed inside and outside the light distribution ring 30. Thereby making these inner LED light sources 40 The emitted light is emitted toward the bulb case 70; and the light emitted by the outer LED light sources 50 is reflected by the reflective layer 356 of the outer wall of the light distribution ring 30 toward the lamp cap 10 The direction is reflected to the bottom of the bulb case 70, illuminating the bottom of the bulb case 70, so that the entire lamp has a light distribution angle of 270 °. Since the high angle LED illuminator 100 only needs to be on the substrate The light distribution ring 30 and the LED light sources 40 and 50 are disposed on the 20, and the light source is not required to be disposed on the side wall of the polyhedron lamp frame, thereby simplifying the structure, having the advantages of simple structure and easy assembly. . In addition, since a cylindrical boss 12 is disposed on the base 10, the substrate 20 and the inner LED light source 40 and the outer LED light source 50 disposed on the substrate 20 are provided. And the halo ring 30 is raised to avoid a bright area formed at the bottom of the bulb shell 70 due to the outer LED light source 50 being too close to the bottom of the bulb shell 70. On the substrate 20 The retroreflective sheeting 60 is disposed such that the light emitted from the outer LED light source 50 is reflected by the reflective layer 356 of the light distribution ring 30 toward the substrate 20 through the substrate 20 The reflection of the retroreflective sheeting 60 of the end face is directed toward the direction of the bulb shell 70. This enhances the luminous flux of the high angle LED illuminator 100, thereby making the entire lamp brighter.

Claims (11)

A large angle LED illuminator, including a lamp head and multiple LEDs a light source, a bulb shell, the bulb shell is connected to the lamp cap, the top surface of the lamp cap is provided with a substrate, and further comprising a light distribution ring, wherein the light distribution ring comprises a fixed end disposed at the bottom portion and an outer expansion end disposed at the top portion, a fixed end is attached to a top surface of the substrate, The LED light source includes a plurality of inner LED light sources and a plurality of outer LED light sources, the inner LED light source is disposed on a top surface of the substrate inside the light distribution ring, and the outer LED a light source is disposed around a top surface of the substrate disposed outside the light distribution ring, and a light reflecting layer is disposed on an outer wall of the light distribution ring, and the light reflecting layer is used for the outer LED The light from the light source is reflected toward the bottom of the bulb shell in a direction that is biased toward the base. Large angle LED according to claim 1 The illuminating lamp is characterized in that the light distribution ring comprises an inner wall and an outer wall, and the light distribution ring has a flared structure, and the fixed end diameter of the light distribution ring is smaller than the diameter of the outer expansion end. The high angle LED illumination lamp of claim 2, wherein a ratio of a height of the light distribution ring to a diameter of the flared end of the light distribution ring is 0.4~0.8. High angle LED according to claim 2 The illumination lamp is characterized in that a fixing lug is disposed on the inner side of the fixed end of the light distribution ring, and the light distribution ring is fixed on the substrate through the fixing lug. A high angle LED illuminating light according to claim 4, wherein said inner LED The light sources are respectively disposed near the inner wall of the light distribution ring and are equally spaced from the inner wall of the light distribution ring. High angle LED according to claim 2 The illuminating lamp is characterized in that the outer wall of the light distribution ring comprises a first outer wall segment and a second outer wall segment, the first outer wall segment is substantially perpendicular to the substrate, and the second outer wall segment is a curved structure, and the tangent of each point on the curved surface The angle with the substrate is less than 45 °, the reflective layer is placed against the outer wall. Large angle LED according to claim 1 The illuminating lamp is characterized in that: the top surface of the lamp cap is provided with a protruding platform, the bottom of the bulb shell is fixed at the bottom of the protruding platform, and the bottom surface of the substrate is fixed on the top surface of the protruding platform. The high angle LED illumination lamp of claim 7 wherein the ratio of the height of the projection to the height of the bulb housing is in the range of 0.06~0.18. The high angle LED illumination lamp of claim 1 wherein the bulb housing is provided with a light scattering material. The high angle LED illumination lamp of claim 1 wherein said outer LED light source has an illumination angle that is less than said inner LED Light source. The high angle LED illumination lamp of claim 1 further comprising a retroreflective sheeting surrounding said inner LED A light source is attached to the top surface of the substrate, and the outer LED light source is located above the reflective sheet.

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