CN211979323U - Fluorescent powder-free golden yellow LED magnifier - Google Patents

Abstract

The utility model discloses a no phosphor powder type golden yellow light LED magnifying glass, including a plurality of LED light sources, base plate, magnifying glass lens, power module, switch, battery, secondary optical element, electric wire and shell, the LED light source directly adopts the LED chip as the light source, the LED chip is the high light efficiency vertical structure's of AlInGaN material system preparation greenish yellow light LED chip and the high light efficiency vertical structure's of AlGaInP material system preparation red light LED chip, greenish yellow light LED chip and ruddiness LED chip direct synthesis golden yellow light. The utility model discloses a direct light-emitting of no phosphor powder type LED light source, the LED light source has avoided the use of phosphor powder by the direct synthesis of LED chip, has improved the reliability of LED light source. The utility model provides a colour temperature that the phosphor powder used to bring and the problem that the light efficiency is difficult to the coordinated development, make colour temperature and light efficiency coordinated development, realized the golden yellow light of the super low colour temperature of high light efficiency, avoided the blue light composition in the current white light LED to user's potential harm.

Description

Fluorescent powder-free golden yellow LED magnifier

Technical Field

The utility model relates to a magnifying glass especially relates to a no phosphor powder type golden yellow light LED magnifying glass.

Background

Magnifying glasses are simple visual optics used to view minute details of an object, and are converging lenses with a focal length much smaller than the apparent distance of the eye. The magnifier is widely applied in daily life, but the traditional magnifier is simple in structure and only comprises a magnifier lens and a magnifier handle, and the simple structure causes the traditional magnifier to be limited in use occasions, wherein the most important phenomenon is that the magnifier can only be used in bright scenes but cannot be used in dim scenes. Therefore, the development of the magnifying glass which can be normally used under any ambient brightness is of great significance.

At present, common magnifying glasses which can be used in dim light scenes on the market are generally realized by directly adding a plurality of white light LED light sources on a glass frame, but the magnifying glasses have the problems of uneven light distribution, blue light harm in the white light LED light sources, halation caused by direct irradiation of the white light LED light sources to eyes, low reliability of the white light LED light sources due to fluorescent powder use and the like.

The prior patent is as Chinese patent publication No. CN208384227U, the publication date is 2019, 1, 15, which discloses a multifunctional magnifier for the old, and the use of the magnifier under the dim light condition is realized by embedding a lamp ring at one side of a main mirror frame and installing a plurality of white light LED light sources. However, the white light LED light source used by the magnifier has blue light hazard, and the blue light hazard can generate adverse effects on the biological rhythm of a user, specifically, the adverse effects include melatonin secretion inhibition, biological clock disorder, sleep disorder and the like. In addition, the white light LED light source is directly mounted on the lamp ring, and a corresponding light distribution element is not used, which may cause uneven illumination distribution when using the magnifier and direct projection of the white light LED light source to human eyes, causing inconvenience.

Disclosure of Invention

An object of the utility model is to provide an adopt healthy LED light source to throw light on, the light distribution is even, reduce the LED light source and to the direct no phosphor powder type golden yellow light LED magnifying glass of people's eye, it can solve the problem that reliability that traditional magnifying glass white light LED light source phosphor powder used to bring is low, colour temperature and light efficiency are difficult to the coordinated development, eliminates the potential harm of blue light composition to the user in the current white light LED light source simultaneously.

The purpose of the utility model is realized like this:

the utility model provides a no phosphor powder type golden yellow light LED magnifying glass, including a plurality of LED light sources, a substrate, the magnifying glass lens, power module, a switch, a battery, secondary optical element, electric wire and shell, magnifying glass lens edge-mounting is on annular shell and realize fixedly, the LED light source passes through the solder and pastes the dress on annular base plate, the base plate is fixed at annular shell internal surface through the mode of mechanical connection, the both ends of LED light source pin respectively with the circuit fixed connection on the base plate, circuit on the base plate passes through the electric wire and is connected with power module, power module passes through electric wire and switch, the battery is connected, secondary optical element passes through the mechanical connection mode and installs on the shell, and realize the sealed protection to the LED light source, the characteristic is: the LED light source adopts a fluorescent powder-free technology, an LED chip is directly adopted as the light source, the LED chip is a yellow-green light LED chip with a high light efficiency vertical structure prepared by an AlInGaN material system and a red light LED chip with a high light efficiency vertical structure prepared by an AlGaInP material system, and the yellow-green light LED chip and the red light LED chip are directly synthesized into golden yellow light.

Further, the LED light source is composed of 1-4 yellow-green light LED chips and 1-4 red light LED chips, the peak wavelength range of the yellow-green light LED chips is 540-580 nm, the peak wavelength range of the red light LED chips is 610-650 nm, the LED chips are connected in series and driven by single constant current, or the LED chips are connected in parallel and driven by multiple paths of currents.

Further, the number of the LED light sources is 1-100, the LED light sources are connected in series, or the LED light sources are divided into a plurality of groups, the groups are connected in series, the groups are connected in parallel, and the LED light sources are driven by single constant current.

Furthermore, the substrate is an annular substrate, the plurality of LED light sources are uniformly distributed on the annular substrate in a circular shape or are locally distributed on the annular substrate, and the installation angle of the LED light sources, namely the included angle between the light-emitting plane of the LED chip and the plane of the magnifier lens, is within the range of 0-90 degrees.

Further, the shape of the magnifier lens is round or square, the shape of the annular shell is the same as that of the magnifier lens, and the magnifier lens is made of one of transparent polymethyl methacrylate (PMMA), Polycarbonate (PC) or glass.

Further, the LED light source comprises a primary optical lens, the material of the primary optical lens is one of silica gel, epoxy resin, polyurethane and silica gel, epoxy resin or polyurethane with silica dioxide or titanium dioxide micro-nano scattering particles doped inside, and the shape of the primary optical lens is one of a spherical cap, a free-form surface or a surface microstructure array.

Further, the secondary optical element can realize sealing protection of the LED light source, the material of the secondary optical element is one of polymethyl methacrylate (PMMA), Polycarbonate (PC) and glass, or the inside of the secondary optical element contains silica or titanium dioxide micro-nano scattering particles, or the surface of the secondary optical element contains a microstructure array.

Further, the substrate is one of a ceramic substrate, an aluminum substrate, a copper substrate or a silicon substrate, and the adopted packaging structure is one of a ceramic package, a chip on board, a system package or a silicon-based package.

The utility model is characterized in that: the utility model discloses a direct light-emitting of no phosphor powder type LED light source, the LED light source has avoided the use of phosphor powder by the direct synthesis of LED chip, has improved the reliability of LED light source. The utility model provides a colour temperature that the phosphor powder used to bring and the problem that the light efficiency is difficult to the coordinated development, make colour temperature and light efficiency coordinated development, realized the golden yellow light of the super low colour temperature of high light efficiency, avoided the blue light composition in the current white light LED to user's potential harm.

Drawings

Fig. 1 is a schematic front view of an LED magnifier structure in embodiment 1 of the present invention;

fig. 2 is a schematic rear view of the LED magnifier structure in embodiment 1 of the present invention;

fig. 3 is a cross-sectional view of an LED magnifier in embodiment 1 of the present invention;

fig. 4 is a schematic view of a light source structure of an LED magnifier in embodiment 1 of the present invention;

fig. 5 is a schematic view of the planar distribution of the light sources of the LED magnifier in embodiment 1 of the present invention;

fig. 6 is a schematic front view of an LED magnifier structure in embodiment 2 of the present invention;

fig. 7 is a cross-sectional view of an LED magnifier in embodiment 2 of the present invention;

fig. 8 is a schematic view of a light source structure of an LED magnifier in embodiment 2 of the present invention;

fig. 9 is a schematic view of the planar distribution of light sources of the LED magnifier in embodiment 2 of the present invention;

fig. 10 is a schematic front view of an LED magnifier structure in embodiment 3 of the present invention;

fig. 11 is a cross-sectional view of an LED magnifier structure in embodiment 3 of the present invention;

fig. 12 is a schematic view of a light source structure of an LED magnifier in embodiment 3 of the present invention;

fig. 13 is a schematic view of the planar distribution of the light sources of the LED magnifier in embodiment 3 of the present invention;

fig. 14 is a schematic front view of an LED magnifier structure in embodiment 4 of the present invention;

fig. 15 is a schematic view of a light source structure of an LED magnifier in embodiment 4 of the present invention;

fig. 16 is a schematic view of the planar distribution of the light sources of the LED magnifier in embodiment 4 of the present invention.

Detailed Description

The present invention is described in more detail below by way of examples, but the following examples are merely illustrative, and the scope of the present invention is not limited by these examples.

Example 1:

as shown in figure 1, a no phosphor powder type golden yellow light LED magnifying glass, including LED light source 11, magnifying glass lens 12, power module 13, switch 14, battery 15, secondary optical element 16, electric wire 17, shell 18 and base plate 19, LED light source 11 installs on annular base plate 19, the chip luminous plane is 0 with the planar contained angle that magnifying glass lens 12 is located, base plate 19 is fixed on annular shell 18 through the mode of mechanical connection, LED light source 11 passes through electric wire 17 and is connected with power module 13, power module 13 passes through electric wire 17 and switch 14 and is connected with battery 15, magnifying glass lens 12 is arranged in the position that shell 18 center was reserved, magnifying glass lens 12 is the PMMA material. As shown in fig. 3, the secondary optical element 16 covers the LED light source 11, and the secondary optical element 16 is mounted on the housing 18, wherein the secondary optical element 16 is made of PC material, and the inside of the secondary optical element 16 is doped with micron silica particles with a mass concentration of 2%, so as to realize the sealing protection of the LED light source 11.

The LED light source 11 is shown in fig. 4, and includes an LED chip 21, a die attach layer 22, a substrate 23, a ball cap lens 24, gold wires 25, and a circuit 26. The four LED chips 21 are arranged at intervals, the LED chips 21 are respectively fixed on the substrate 23 through the die bonding layer 22, two ends of pins of the LED chips 21 are respectively fixedly connected with the circuit 26 on the substrate 23, and the substrate 23 is provided with the silicone ball cap lens 24 covering the four LED chips 21.

As shown in fig. 5, the 4 LED chips 21 are composed of 2 yellow-green LED chips 211 and 2 red LED chips 212. The yellow-green light LED chip 211 is a high-light-efficiency vertical-structure yellow-green light LED chip prepared by an AlInGaN material system, the peak wavelength of the yellow-green light LED chip 211 is 550 nm, the red light LED chip 212 is a high-light-efficiency vertical-structure red light LED chip prepared by an AlGaInP material system, and the peak wavelength range of the red light LED chip 212 is 620 nm.

Example 2:

as shown in fig. 6, a non-phosphor type golden yellow LED magnifier comprises an LED light source 31, a magnifier lens 32, a power module 33, a switch 34, a battery 35, a secondary optical element 36, an electric wire 37, a housing 38 and a substrate 39, wherein the LED light source 31 is mounted on the substrate 39, an included angle between a chip light emitting plane and a plane where the magnifier lens is located is 90 °, the substrate 39 is embedded and mounted inside the housing 38 in a mechanical connection manner and is connected with the power module 33 through the electric wire 37, the power module 33 is connected with the battery 35 through the electric wire 37 and the switch 34, the magnifier lens 32 is placed in a reserved position in the center of the housing 38, and the magnifier lens 32 is made of glass. As shown in fig. 7, the secondary optical element 36 covers the LED light source 31, and the secondary optical element 36 is mounted on the housing 38, and the secondary optical element 36 is made of PMMA, so that the LED light source 31 is sealed and protected by the secondary optical element 36.

The LED light source 31 has a structure as shown in fig. 8, and includes an LED chip 41, a die attach layer 42, a substrate 43, a lens 44, gold wires 45, and a circuit 46. The four LED chips 41 are arranged at intervals, the LED chips 41 are respectively fixed on the substrate 43 through the die bonding layer 42, two ends of pins of the LED chips 41 are respectively fixedly connected with the circuit 46 on the substrate 43, and the mounting surface of the substrate 43 includes a silica gel lens 44 with a microstructure array.

As shown in fig. 9, the 4 LED chips 41 are composed of 2 yellow-green LED chips 411 and 2 red LED chips 412. The yellow-green LED chip 411 is a high-luminous-efficiency vertical-structure yellow-green LED chip prepared by an AlInGaN material system, the peak wavelength of the yellow-green LED chip is 540 nm, and the red LED chip 412 is a high-luminous-efficiency vertical-structure red LED chip prepared by an AlGaInP material system, and the peak wavelength range of the red LED chip is 650 nm.

Example 3:

as shown in fig. 10, a non-phosphor type golden yellow LED magnifier comprises an LED light source 51, a magnifier lens 52, a power module 53, a switch 54, a battery 55, a secondary optical element 56, an electric wire 57, a housing 58 and a substrate 59, wherein a single LED light source 51 is mounted on the substrate 59, the included angle between the light emitting plane of the chip and the plane of the magnifier lens is 0 °, the substrate 59 is fixed on the housing 58 under the magnifier lens 52 in a mechanical connection manner and is connected with the power module 53 through the electric wire 57, the power module 53 is connected with the battery 55 through the electric wire 57 and the switch 54, the magnifier lens 52 is arranged in the reserved position in the center of the housing 58, and the magnifier lens 52 is made of glass. As shown in fig. 11, the secondary optical element 56 covers the LED light source 51, and the secondary optical element 56 is mounted on the housing 58, and the secondary optical element 56 is made of glass, and the LED light source 51 is sealed and protected by the secondary optical element 56.

The LED light source 51 has a structure as shown in fig. 12, and includes an LED chip 61, a die attach layer 62, a substrate 63, a ball cap lens 64, gold wires 65, and a circuit 66. The four LED chips 61 are arranged at intervals, the LED chips 61 are respectively fixed on the substrate 63 through the die bonding layer 62, two ends of pins of the LED chips 61 are respectively fixedly connected with the circuit 66 on the substrate 63, the substrate 63 is provided with the silica gel ball cap lens 64, and the silica gel ball cap lens is internally doped with micron titanium dioxide particles with the mass concentration of 0.8%.

As shown in fig. 13, the 4 LED chips 61 are composed of 2 yellow-green LED chips 611 and 2 red LED chips 612. The yellow-green light LED chip 611 is a high-luminous-efficiency vertical-structure yellow-green light LED chip prepared by an AlInGaN material system, the peak wavelength of the yellow-green light LED chip is 580nm, the red light LED chip 612 is a high-luminous-efficiency vertical-structure red light LED chip prepared by an AlGaInP material system, and the peak wavelength range of the red light LED chip is 610 nm.

Example 4:

as shown in fig. 14, a fluorescent powder-free golden yellow LED magnifier comprises an LED light source 71, a magnifier lens 72, a power module 73, a switch 74, a battery 75, a secondary optical element 76, an electric wire 77, a housing 78 and a substrate 79, wherein the two LED light sources 71 are mounted on the substrate 79, the included angle between the light emitting plane of the chip and the plane where the magnifier lens is located is 0 °, the substrate 79 is fixed on the housing 78 below the magnifier lens 72 by mechanical connection, and is connected with a power module 73 through an electric wire 77, the power module 73 is connected with a battery 75 through the electric wire 77 and a switch 74, a magnifier lens 72 is arranged in the reserved position of the center of a shell 78, the magnifier lens 72 is made of PC material, a secondary optical element 76 is made of PMMA material, the secondary optical element 76 is covered on the LED light source 71, and the secondary optical element 76 is mounted on the housing 78, and the LED light source 71 is hermetically protected by the secondary optical element 76.

The LED light source 71 is configured as shown in fig. 15, and includes an LED chip 81, a die attach layer 82, a substrate 83, a lens 84, gold wires 85, and a circuit 86. The four LED chips 81 are arranged at intervals, the LED chips 81 are respectively fixed on the substrate 83 through the die bonding layer 82, two ends of pins of the LED chips 81 are respectively fixedly connected with the circuit 86 on the substrate 83, and the mounting surface of the substrate 83 includes a silica gel lens 84 of a microstructure array.

As shown in fig. 16, the 4 LED chips 81 are composed of 2 yellow-green LED chips 811 and 2 red LED chips 812. The yellow-green light LED chip 811 is a high-light-efficiency vertical-structure yellow-green light LED chip prepared by an AlInGaN material system, the peak wavelength of the yellow-green light LED chip is 560 nm, and the red light LED chip 812 is a high-light-efficiency vertical-structure red light LED chip prepared by an AlGaInP material system, and the peak wavelength range of the red light LED chip is 630 nm.

Claims (6)

1. The utility model provides a no phosphor powder type golden yellow light LED magnifying glass, including a plurality of LED light sources, a substrate, the magnifying glass lens, power module, a switch, a battery, secondary optical element, electric wire and shell, magnifying glass lens edge-mounting is on annular shell and realize fixedly, the LED light source passes through the solder and pastes the dress on annular base plate, the base plate is fixed at annular shell internal surface through the mode of mechanical connection, the both ends of LED light source pin respectively with the circuit fixed connection on the base plate, circuit on the base plate passes through the electric wire and is connected with power module, power module passes through electric wire and switch, the battery is connected, secondary optical element passes through the mechanical connection mode and installs on the shell, and realize the sealed protection to the LED light source, a serial communication port: the LED light source does not adopt fluorescent powder, and directly adopts an LED chip as the light source, the LED chip is a yellow-green light LED chip with a high light efficiency vertical structure prepared by an AlInGaN material system and a red light LED chip with a high light efficiency vertical structure prepared by an AlGaInP material system, and the yellow-green light LED chip and the red light LED chip are directly synthesized into golden yellow light.

2. The phosphor-free golden yellow LED magnifier according to claim 1, wherein: the LED light source is composed of 1-4 yellow-green light LED chips and 1-4 red light LED chips, the peak wavelength range of the yellow-green light LED chips is 540 m-580 nm, the peak wavelength range of the red light LED chips is 610 nm-650 nm, the LED chips are connected in series and driven by single constant current, or the LED chips are connected in parallel and driven by multiple paths of current.

3. The phosphor-free golden yellow LED magnifier according to claim 1, wherein: the number of the LED light sources is 1-100, the LED light sources are connected in series, or the LED light sources are divided into a plurality of groups, the groups are connected in series, the groups are connected in parallel, and the LED light sources are driven by single constant current.

4. The phosphor-free golden yellow LED magnifier according to claim 1, wherein: the LED magnifier comprises a substrate, a plurality of LED light sources, a magnifier lens and a magnifier lens, wherein the substrate is an annular substrate, the LED light sources are uniformly distributed on the annular substrate in a circular shape or are locally distributed on the annular substrate, and the installation angle of the LED light sources, namely the included angle between the light-emitting plane of the LED chip and the plane of the magnifier lens, is within the range of 0-90 degrees.

5. The phosphor-free golden yellow LED magnifier according to claim 1, wherein: the shape of the magnifier lens is round or square, and the shape of the annular shell is the same as that of the magnifier lens.

6. The phosphor-free golden yellow LED magnifier according to claim 1, wherein: the substrate is one of a ceramic substrate, an aluminum substrate, a copper substrate or a silicon substrate, and the adopted packaging structure is one of ceramic packaging, chip on board, system packaging or silicon-based packaging.

Images