KR20110092756A - Led flash unit with reflector - Google Patents

Led flash unit with reflector Download PDF

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Publication number
KR20110092756A
KR20110092756A KR1020100012365A KR20100012365A KR20110092756A KR 20110092756 A KR20110092756 A KR 20110092756A KR 1020100012365 A KR1020100012365 A KR 1020100012365A KR 20100012365 A KR20100012365 A KR 20100012365A KR 20110092756 A KR20110092756 A KR 20110092756A
Authority
KR
South Korea
Prior art keywords
reflector
light
led
loss
light emitting
Prior art date
Application number
KR1020100012365A
Other languages
Korean (ko)
Inventor
김홍채
Original Assignee
주식회사 트레이스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 트레이스 filed Critical 주식회사 트레이스
Priority to KR1020100012365A priority Critical patent/KR20110092756A/en
Publication of KR20110092756A publication Critical patent/KR20110092756A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/65—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Led Device Packages (AREA)

Abstract

Conventional mobile LED flash has seen a large amount of light loss due to size constraints or various factors compared to the development of mobile product technology and camera module, which are currently slimming. Recently, the application of the flash using white high brightness LED is increasing in mobile products.However, due to the loss of light, the light emitted from the small flash unit is lost to the outside when taking pictures with the camera created in the mobile device. The problem of deterioration appears and the use of yellow fluorescent material due to the characteristics of the white LED has a disadvantage in that the appearance of the mobile phone is not good. The present invention reduces the loss of light and reduces the loss of light emitted from the LED 410 by installing a reflector in the small LED light emitting unit so that the white LED can be seen directly from the outside, and only the silver-white reflector from the outside. We proposed a way to make it visible. In the past, a method of improving the amount of light of the LED 410 by installing the reflector has been proposed and applied. However, in the existing small light emitting flash unit emitting from the top to the bottom, the amount of light lost is only a little even though the reflector is reflected by calling the reflector. do.
According to the present invention, the bidirectional reflective reflector 310 is combined with the reflector holder 300 and the flexible circuit board 400 having the LED 410 seated on both sides thereof is simultaneously reflected to both sides while emitting light. In order to reduce the loss of light to a minimum by transmitting the NEL lens 200, the purpose is to improve the picture quality of the camera mounted on the mobile device to the maximum.

Description

Reflective LED Light Emitting Device {LED FLASH UNIT WITH REFLECTOR}

The present invention provides a small LED light-emitting flash unit for a mobile device, and improves the internal reflection structure and the arrangement of the LED to reduce the amount of light lost and to prevent the direct view of the LED from the outside. It aims to minimize the amount of light lost during shooting to prevent deterioration of picture quality and to be suitable for cameras that require high light levels and to enhance the external design of mobile devices.

In the technical field of the present invention, a small light emitting flash unit used in a mobile device is mounted on almost all mobile devices currently on the market, and a general small light emitting flash unit is a circuit board 110 or a flexible circuit board 400. It is mounted in a plane on the plane is composed of a structure in which the injection of light is sprayed upward and transmitted through the lens 100. However, compared to the development of mobile product technology and camera module, which are becoming slimmer, they are losing much light due to size constraints and various factors. Due to the loss of light amount, the light emitted from the small light emitting unit is lost to the inside and outside of the camera when the picture is created by the camera created in the mobile device. A method of reducing the loss of light emitted from the LED 410 has been proposed and applied by installing a reflector in the small light emitting flash unit for the purpose of reducing the loss of the amount of light.

In the existing small light emitting unit that emits light down, it is not only reflected through the reflector, but also a large amount of light is lost.

The bidirectional reflective reflector 310 according to the embodiment of the present invention is coupled to the reflector holder 300, and the flexible circuit board 400 having the LED 410 seated on both sides is coupled to both sides of the light while simultaneously emitting light. In order to reduce the loss of light to a minimum by transmitting the NEL lens 200 to minimize the picture quality of the mounted camera of the mobile device.

The present invention for achieving the above object is seated to the reflector with a certain angle to the LED 410 at both ends on the flexible circuit board 400 is coupled to the inside of the reflector holder 300 and to the inner portion of the reflector When the light is emitted from the LED 410 by combining the two-way reflection reflector 310, the light is reflected through the two-way reflection reflector 310 and passes through the Fresnel lens 200, and the main purpose is to reduce the light loss to a minimum. to be.

The present invention minimizes the loss of light emitted from the LED 410 by installing a two-way reflecting reflector in a small light emitting flash unit for a mobile device through the means for solving the problems as described above, and is mounted on a mobile device. This is to improve the quality of photographs when shooting with the old camera, and it is installed in the camera which requires high light quantity, which is effective in the future of the camera business as well as the technology of fresh products. In addition, the yellow LED is not visible from the outside, thereby improving the design of the mobile device.

1 is a perspective view of a conventional LED light emitting device for small mobile devices.
2 is a schematic perspective view of a reflective LED light emitting device having a bidirectional reflective structure.
3 is an exploded view of a reflective LED light emitting device according to an embodiment of the present invention.
4 is a cross-sectional view of a reflective LED light emitting device according to an embodiment of the present invention.
<Description of the code | symbol about the principal part of drawing>
100: Lens
110: circuit board
120: connector
130: LED
200: Fresnel lens of the light emitting device according to the present
300: reflector holder of the light emitting device according to the present
310: bidirectional reflecting reflector of the light emitting device according to the present invention
400: flexible circuit board of the light emitting device according to the present invention
410: LED of the light emitting device according to the present invention
420: circuit component of the light emitting device according to the present invention
430: connector of the light emitting device according to the present invention

Detailed Description of the Invention The following detailed description of the invention refers to the accompanying drawings that illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in detail so that those skilled in the art can fully understand the present invention. It is to be understood that the various embodiments of the invention are different, but need not be mutually exclusive. Specific shape and structure of the accompanying drawings may be implemented in other embodiments without departing from the spirit and scope of the present invention with respect to the embodiments. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1 is a perspective view of a conventional small LED light emitting device for a mobile device. As shown in FIG. 1, the light is emitted upward in a form in which the LED 130 is seated and emitted in a plane. The light passing through the lens 100 is diffused into the side rather than the optical region and diffuses inward, causing loss of light.

In order to solve the above problems, as shown in FIG. 4, the light is reflected through the bidirectional reflector 310 when the light is emitted by installing the bidirectional reflector 310, which is the core of the present invention, around the LED 410. Then, the Fresnel lens 200 is passed through.

The above-mentioned bidirectional reflecting reflector 310 should be made of a metal material such as aluminum having excellent reflectivity so that light can be reflected, and a metal having a surface coating should be used for smooth surface formation. The light reflected from the LED 410 is reflected without loss to form an inclination angle to pass through the Fresnel lens 200, which should be manufactured by processing into a press mold.

In addition, in order to prolong the life of the LED light emitting device for mobile devices, the heat dissipation structure design of the flexible circuit board 400 is important. An area of the flexible circuit board 400 except for an area where each circuit component 420, the LED 410, and the connector 430 is seated should be formed of a heat radiation pad part.

Claims (4)

A reflective LED light emitting device having a structure in which a bidirectional reflective reflector is mounted inside a reflector holder, and LEDs as light sources are formed at a predetermined angle on both sides thereof so that a light emitting light source of the LED is reflected through the reflector and is uniformly distributed to the outside of the device. The reflective LED light emitting device of claim 1, wherein the LEDs have a reflector having a bidirectional reflective structure having a high central portion and a low bilateral design structure so as to uniformly distribute the light sources of the plurality of LEDs on both sides to the outside of the lens. The reflective LED light emitting device of claim 1, wherein the reflector is mounted on both ends of the reflector at a predetermined angle so as to uniformly reflect light to the outside and emits light toward the reflector. The reflective LED light emitting device of claim 1, wherein the flexible board has a heat dissipation structure in which a heat dissipation pad is applied to the flexible substrate to effectively extract heat generated from the LED.
KR1020100012365A 2010-02-10 2010-02-10 Led flash unit with reflector KR20110092756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100012365A KR20110092756A (en) 2010-02-10 2010-02-10 Led flash unit with reflector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100012365A KR20110092756A (en) 2010-02-10 2010-02-10 Led flash unit with reflector

Publications (1)

Publication Number Publication Date
KR20110092756A true KR20110092756A (en) 2011-08-18

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ID=44929556

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100012365A KR20110092756A (en) 2010-02-10 2010-02-10 Led flash unit with reflector

Country Status (1)

Country Link
KR (1) KR20110092756A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015035411A1 (en) * 2013-09-09 2015-03-12 Apple Inc. Light source window paint

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015035411A1 (en) * 2013-09-09 2015-03-12 Apple Inc. Light source window paint
US9736283B2 (en) 2013-09-09 2017-08-15 Apple Inc. Light source window paint

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E902 Notification of reason for refusal
E601 Decision to refuse application