A light source for phototherapy

Abstract

This application relates to the field of phototherapy, and particularly to a light source for phototherapy. The key technical points of its technical solution include a substrate, on which a plurality of red light LED chips connected to a power source and a plurality of red light superluminescent diodes connected to the power source are provided; it achieves the purpose of making the red light emitted by the red light therapeutic instrument have both the properties of a relatively narrow half-wave width and a relatively large emission angle, thereby improving the therapeutic effect of the red light therapeutic instrument.

Description

Technical Field

[0001] This application relates to the field of phototherapy, and particularly to a light source for phototherapy. Background Art

[0002] Phototherapy as a means of treating diseases can be traced back to 1903; in order to make the medical red light therapy instrument have better treatment effects, a red light source with a relatively narrow half-wave width and a relatively large emission angle is required.

[0003] Currently, the red light sources of medical red light therapy instruments either adopt red light LED chips or red light superluminescent diodes; the red light emitted by the red light therapy instrument adopting red light LED chips has a relatively large emission angle and a relatively wide half-wave width, thus resulting in a relatively low effective radiation intensity of the red light therapy instrument; while the red light emitted by the red light therapy instrument adopting red light superluminescent diodes has a relatively narrow half-wave width and a relatively small emission angle, so the uniformity of the red light emitted by the red light therapy instrument is relatively poor, and the treatment effect is thus reduced. Summary of the Invention

[0004] In order to enable the red light emitted by the red light therapy instrument to have the properties of a relatively narrow half-wave width and a relatively large emission angle, thereby improving the treatment effect of the red light therapy instrument, this application provides a light source for phototherapy.

[0005] The light source for phototherapy provided by this application adopts the following technical solution:

[0006] A light source for phototherapy includes a substrate, and a plurality of red light LED chips connected to a power source and a plurality of red light superluminescent diodes connected to the power source are arranged on the substrate.

[0007] By adopting the above technical solution, the red light emitted by the red light LED chips has a relatively large emission angle but a relatively wide half-wave width, while the red light emitted by the red light superluminescent diodes has a relatively narrow half-wave width but a relatively small emission angle; the red light LED chips and the red light superluminescent diodes are simultaneously arranged on the substrate. In this way, the red light LED chips and the red light superluminescent diodes together form a combined light source on the substrate. The red light emitted by this combined light source consists of two parts. When performing red light therapy, the relatively narrow half-wave width part and the relatively large emission angle part in the combined light source act on the human skin together; the relatively narrow half-wave width part makes the irradiated wavelength range concentrated within the effective range of treatment, thereby enhancing the effective irradiation intensity of the light therapy instrument; the relatively large emission angle part increases the radiation range of the red light and improves the uniformity of the red light; in this way, the red light emitted by the red light therapy instrument has the properties of a relatively narrow half-wave width and a relatively large emission angle, thereby improving the treatment effect of the red light therapy instrument.

[0008] Preferably, a plurality of light condensing grooves are formed on the surface of the substrate, and the plurality of light condensing grooves divide the surface of the substrate into a plurality of mounting platforms; the red light LED chips are arranged on the mounting platforms, and the red light superluminescent diodes are arranged at the bottoms of the light condensing grooves.

[0009] By adopting the above technical solution, when performing red light therapy, the red light LED chips and the red light superluminescent diodes jointly irradiate red light on the human skin; since the light emitting angle of the red light superluminescent diode is small, the range of the red light superluminescent diode irradiating on the human skin is small; the formation of the light condensing grooves increases the distance between the red light superluminescent diode and the human skin. In this way, the range of the red light superluminescent diode irradiating on the human skin can be increased, that is, the range of the red light with a relatively narrow half-wave width emitted by the red light superluminescent diode received by the human skin is increased, and further the therapeutic effect of the red light therapeutic apparatus is improved.

[0010] Preferably, the respective groove walls of the light condensing grooves are inclined in a direction away from each other from bottom to top, that is, the longitudinal cross-sectional shape of the light condensing groove along the direction perpendicular to its own extension is an inverted trapezoid.

[0011] By adopting the above technical solution, the red light emitted by the red light superluminescent diode diverges upward from the light source at a certain angle; the groove walls of the light condensing grooves are inclined, which can reduce the shielding of the red light by the groove walls of the light condensing grooves, that is, reduce the reflection of the red light on the groove walls of the light condensing grooves, and further reduce the energy loss of the red light.

[0012] Preferably, the light condensing grooves and the mounting platforms are arranged in an array on the substrate; and in the longitudinal and transverse directions of the array, the light condensing grooves and the mounting platforms are alternately distributed.

[0013] By adopting the above technical solution, the red light LED chips and the red light superluminescent diodes are alternately distributed on the substrate accordingly. In this way, the red light emitted by the red light LED chips and the red light emitted by the red light superluminescent diodes are alternately distributed, that is, the red light emitted by the combined light source is more uniform, and further the unit area on the human skin can be irradiated by the red light with two characteristics at the same time, and the therapeutic effect of the red light therapeutic apparatus is further improved.

[0014] Preferably, the substrate is a mirror aluminum substrate.

[0015] By adopting the above technical solution, on the one hand, the reflectivity of the mirror aluminum substrate is relatively high, and further the energy loss caused by the reflection of the red light emitted by the red light LED chips and the red light superluminescent diodes can be reduced; on the other hand, the mirror aluminum substrate has good heat conduction performance. In this way, the substrate can more quickly conduct the heat dissipated by the red light LED chips and the red light superluminescent diodes during the light emitting process, and further reduce the possibility of damage to the red light LED chips and the red light superluminescent diodes due to overheating.

[0016] Preferably, both the red light LED chip and the red light superluminescent diode are fixed on the substrate by metal bonding wires, conductive adhesives or solder pastes.

[0017] By adopting the above technical solution, the red light LED chip and the red light superluminescent diode are fixed on the substrate, thereby reducing the possibility that the red light LED chip and the red light superluminescent diode fall off the substrate during use.

[0018] Preferably, the wavelengths of the red light emitted by both the red light LED chip and the red light superluminescent diode are in the range of 600 nm to 700 nm.

[0019] By adopting the above technical solution, the red light with a wavelength between 600 nm and 700 nm has strong penetration ability to the human body, thereby improving the curative effect of the red light therapeutic instrument.

[0020] Preferably, the difference between the wavelength of the red light emitted by the red light LED chip and the wavelength of the red light emitted by the red light superluminescent diode is less than 5 nm.

[0021] By adopting the above technical solution, the wavelength difference between the two red lights is small, so that the two red lights emitted by the red light LED chip and the red light superluminescent diode overlap as much as possible, so that the half-wave width of the red light composed of the two red lights is small, thereby improving the treatment effect of the red light therapeutic instrument.

[0022] Preferably, the substrate is covered with a packaging adhesive for protecting the red light LED chip and the red light superluminescent diode.

[0023] By adopting the above technical solution, the packaging adhesive can waterproof, moisture-proof, dust-proof, dissipate heat, etc. for the red light LED chip and the red light superluminescent diode.

[0024] In summary, the present application has the following technical effects:

[0025] 1. By providing a substrate, on which a red light LED chip and a red light superluminescent diode are provided at the same time, the red light emitted by the red light therapeutic instrument has the properties of a relatively narrow half-wave width and a relatively large emission angle, thereby improving the treatment effect of the red light therapeutic instrument;

[0026] 2. By providing a light condensing groove on the substrate, the range of the red light superluminescent diode irradiating on the human skin can be increased, that is, the range of the red light with a relatively narrow half-wave width emitted by the red light superluminescent diode received by the human skin is increased, thereby further improving the treatment effect of the red light therapeutic instrument. Description of the Drawings

[0027] Figure 1It is the external structure diagram of the light source for phototherapy in the first embodiment;

[0028] Figure 2 It is the internal structure diagram of the light source for phototherapy in the first embodiment;

[0029] Figure 3 It is the internal structure diagram of the light source for phototherapy in the second embodiment.

[0030] In the figure, 1 is the substrate; 11 is the mounting table; 2 is the light condensing groove; 3 is the red light LED chip; 4 is the red light superluminescent diode; 5 is the encapsulation glue. Specific implementation mode

[0031] The following further details the present application with reference to the accompanying drawings.

[0032] The first embodiment

[0033] Refer to Figure 1 and Figure 2 The present application provides a light source for phototherapy, including a rectangular substrate 1; a plurality of light condensing grooves 2 penetrating the substrate 1 are formed on the substrate 1, and the plurality of light condensing grooves 2 are uniformly distributed along the length direction of the substrate 1; the plurality of light condensing grooves 2 divide the surface of the substrate 1 into a plurality of mounting tables 11, that is, the mounting tables 11 and the light condensing grooves 2 are alternately distributed along the length direction of the light condensing grooves 2; a plurality of red light LED chips 3 are arranged on the upper surface of the mounting table 11, and the plurality of red light LED chips 3 are uniformly distributed along the extending direction of the mounting table 11; a plurality of red light superluminescent diodes 4 are arranged at the bottom of the light condensing groove 2, and the plurality of red light superluminescent diodes 4 are uniformly distributed along the extending direction of the light condensing groove 2; the red light LED chips 3 are fixed on the mounting table 11 by metal bonding wires, conductive adhesives or solder pastes; the red light superluminescent diodes 4 are fixed at the bottom of the light condensing groove 2 by metal bonding wires, conductive adhesives or solder pastes; the red light LED chips 3 and the red light superluminescent diodes 4 are connected to a power source in series or in parallel.

[0034] In this way, multiple red light LED chips 3 and red light superluminescent diodes 4 are simultaneously arranged on the substrate 1. Since the emitted red light has a relatively large emission angle but a relatively wide half-width, while the red light emitted by the red light superluminescent diode 4 has a relatively narrow half-width but a relatively small emission angle. Thus, the multiple red light LED chips 3 and the multiple red light superluminescent diodes 4 together form a combined light source capable of emitting red light on the substrate 1. The red light emitted by the combined light source is composed of the red light emitted by the red light LED chips 3 and the red light emitted by the red light superluminescent diodes 4. That is, the red light emitted by the combined light source has both a part with a relatively narrow half-width and a part with a relatively large emission angle. The part with a relatively narrow half-width makes the irradiated wavelength range concentrated within the effective range of treatment, thereby enhancing the effective irradiation intensity of the phototherapy instrument. The part with a relatively large emission angle increases the irradiation range of the red light on the human skin and improves the uniformity of the red light, thus improving the medical effect of the red light therapeutic instrument.

[0035] Further, the longitudinal cross-sectional shape of the light collecting groove 2 along the direction perpendicular to its extending direction is an inverted trapezoid, that is, the two groove walls of the light collecting groove 2 incline away from each other from bottom to top. Since the emission angle of the red light superluminescent diode 4 is relatively small, the range of the red light emitted by the red light superluminescent diode 4 irradiated on the human skin is relatively small. Also, since the red light superluminescent diode 4 is arranged at the bottom of the light collecting groove 2, the distance between the red light superluminescent diode 4 and the human skin is increased. In this way, the range of the red light emitted by the red light superluminescent diode 4 irradiated on the human skin can be increased, that is, the range of the red light with a relatively narrow half-width emitted by the red light superluminescent diode 4 received by the human skin is increased, thereby improving the treatment effect of the red light therapeutic instrument. By arranging the groove walls of the light collecting groove 2 to be inclined, the influence of the groove walls of the light collecting groove 2 on the red light emitted by the red light superluminescent diode 4 can be reduced, that is, the reflection of the red light on the groove walls is reduced, and thus the energy loss of the red light due to reflection is reduced.

[0036] The wavelength of the red light emitted by the red light LED chips 3 and the wavelength of the red light emitted by the red light superluminescent diodes 4 are both in the range of 600nm - 700nm. The red light with a wavelength in the range of 600nm - 700nm has a strong penetration ability into the human skin, that is, a deep penetration into the human body, thereby being able to improve the treatment effect of the red light therapeutic instrument. In addition, the difference between the wavelength of the red light emitted by the red light LED chips 3 and the wavelength of the red light emitted by the red light superluminescent diodes 4 is less than 5nm, that is, the wavelength of the red light emitted by the red light LED chips 3 and the wavelength of the red light emitted by the red light superluminescent diodes 4 are as close as possible. In this way, the two red light electromagnetic waves can overlap and synthesize combined red light during the propagation process, and the half-width of the combined red light is further reduced, further improving the treatment effect of the red light therapeutic instrument.

[0037] Furthermore, the substrate 1 is a mirror aluminum substrate 1. Since the reflectivity and thermal conductivity of the mirror aluminum substrate 1 are both relatively high, it is possible to reduce the energy loss of the red light emitted by the red LED chip 3 or the red superluminescent diode 4 due to reflection. Moreover, the good thermal conductivity of the substrate 1 can conduct the heat generated by the red LED chip 3 or the red superluminescent diode 4 out of the substrate 1 faster and more, thereby reducing the possibility of damage to the red LED chip 3 or the red superluminescent diode 4 due to the process.

[0038] The encapsulation glue 5 is covered on the substrate 1 through a dispensing or spraying process. The encapsulation glue 5 can play a role in moisture-proof, waterproof, heat dissipation, and dust-proof for the red LED chip 3 and the red superluminescent diode 4.

[0039] Embodiment 2

[0040] Refer to Figure 3 , the difference between Embodiment 2 and Embodiment 1 is that a plurality of light condensing grooves 2 and a plurality of mounting platforms 11 are arranged on the substrate 1 together in an array manner, and the light condensing grooves 2 and the mounting platforms 11 are alternately distributed along the length and width directions of the substrate 1, that is, the red LED chips 3 and the red superluminescent diodes 4 are alternately distributed along the vertical and horizontal directions of the substrate 1; in this way, the red light emitted by the red LED chips 3 and the red light emitted by the red superluminescent diodes 4 can irradiate the human skin more evenly, thereby enabling the human skin to receive the irradiation of two kinds of red light with a larger emission angle and a smaller half-wave width on the unit area as much as possible, thereby improving the treatment effect of the red light therapeutic instrument.

[0041] This specific embodiment is only an interpretation of the present application, and it is not a limitation of the present application. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A light source for phototherapy, characterized in that: It includes a substrate (1), on the surface of which there are provided a plurality of light - collecting grooves (2). The plurality of light - collecting grooves (2) divide the surface of the substrate (1) into a plurality of mounting platforms (11). The light - collecting grooves (2) and the mounting platforms (11) are arranged in an array on the substrate (1). And in the longitudinal and transverse directions of the array, the light - collecting grooves (2) and the mounting platforms (11) are alternately distributed. Each groove wall of the light - collecting groove (2) inclines away from each other from bottom to top, that is, the longitudinal cross - section shape of the light - collecting groove (2) perpendicular to its own extension direction is an inverted trapezoid. On the substrate (1), there are provided a plurality of red LED chips (3) connected to a power source and a plurality of red super - luminescent light - emitting diodes (4) connected to a power source. Compared with the red super - luminescent light - emitting diodes (4), the red LED chips (3) emit red light with a larger emission angle but a wider half - wave width, while the red super - luminescent light - emitting diodes (4) emit red light with a narrower half - wave width but a smaller emission angle. The red LED chips (3) are arranged on the mounting platforms (11), and the red super - luminescent light - emitting diodes (4) are arranged at the bottom of the light - collecting grooves (2).

2. The light source for phototherapy according to claim 1, wherein: The substrate (1) is a mirror - surface aluminum substrate (1).

3. The light source for phototherapy according to claim 1, characterized in that: Both the red LED chips (3) and the red super - luminescent light - emitting diodes (4) are fixed on the substrate (1) by metal bonding wires, conductive adhesives or solder pastes.

4. A light source for phototherapy according to claim 1, characterized in that: The red light wavelengths emitted by both the red LED chips (3) and the red super - luminescent light - emitting diodes (4) are in the range of 600nm - 700nm.

5. A light source for phototherapy according to claim 1, characterized in that: The difference between the red light wavelength emitted by the red LED chips (3) and the red light wavelength emitted by the red super - luminescent light - emitting diodes (4) is less than 5nm.

6. The light source for phototherapy according to claim 1, wherein: The substrate (1) is covered with a packaging glue (5) for protecting the red LED chips (3) and the red super - luminescent light - emitting diodes (4).

Images