baber/WOPTO huggingface dataset:
Patent KR-20020044619-A (KR)
Title: Head reinforced apparatus for steel pipe piles
Inventor: LEE GI HONG
IPC: E02D5/28
Filed: 2000-12-06
Abstract: PURPOSE: Provided is a reinforcing apparatus for a head of steel pipe pile during hardening ground for building structures such as bridge in order to retain a safe intensity for arranging the structure in order to introduce a base concrete. CONSTITUTION: The apparatus comprises an arrangement component(30) welded at equal intervals at bottom side of a ring type cover plate(20); a steel flat bar or angle bar type support block(60) welded on quarter-sectioned inner side of a steel pipe(100) out of the component(30); '+' shaped intersection(70) to support the block(60); a circular plate(50) adjacent to inner diameter of the pipe(100) and welded at bottom side of the block(60); and inner space formed by forming a coupling groove, reinforcing the head of the pipe(100) with coupling of bolt and washer(B) to produce the space outlined by the cover plate(20), the pipe(100) and the circular plate(50).
Patent KR-20020047819-A (KR)
Title: Structure of floor gang way rail for bus
Inventor: LEE YUN GYU
IPC: B62D25/20
Filed: 2000-12-14
Abstract: PURPOSE: Structure of a drain way rail of a bus floor is provided to exclude a veneer board mounting angle and a seat mounting angle by integrating a drain way rail of a floor via two rails and to simplify the structure by making a heater pipe pass through the drain way rail. CONSTITUTION: A drain way lower rail(21) is installed on the end of a drain way floor(10) and a seat lower floor. A drain way upper rail is mounted on the drain way lower rail by stop welding. In the drain way rail, a bracket(25) is mounted on the drain way lower rail by stop welding. Inside the drain way lower rail and the bracket, a heater pipe(15) is placed.
Patent KR-20020048160-A (KR)
Title: making apparatus of sealling pin for rotor of a blower
Inventor: JANG JUNG YEON
IPC: B21D5/00
Filed: 2000-12-16
Abstract: PURPOSE: An apparatus for forming a sealing pin for a blower rotor is provided to instantly form various sealing pins installed at rotor shafts of blowers and rotary machines requiring air-tightness regardless of where they are used if necessary. CONSTITUTION: In a sealing pin which is installed at a rotor of a blower or rotary machine to provide with air-tightness, the apparatus for forming the sealing pin for a blower rotor comprises a semicircular reel(10) which is installed to continuously supply a base metal(S) of a strip that is manufactured in a long band shape considering a size of the sealing pin; multistage shape rolls(20) which are installed on a passage where the base metal(S) is led out, and upper and lower parts of which have corresponding shapes so that the bended shape is corresponded with a required shape by gradually bending a base metal having a plane cross section; speed reduction motors(22) which are installed at the rear parts of shafts formed on the upper parts of the shape rolls(20) by means of couplings so that the speed reduction motors(22) are driven to the same speed reduction ratios as the shape rolls(20); a bending roll(30) which is installed at a point passing through the final stage of the upper and lower parts of the shape rolls(20) so as to bend a forming completed formed material(S') in an arc shape; a drum(40) which is driven by a motor so that the bending completed formed material(S') is coiled; and guide rolls(50) ascended or descended on an arc shaped groove which is installed on the drums(40) and vertically formed so that the bended formed material(S') is smoothly guided to the drum(40) by preventing distortion or defects caused by bending when coiling the formed material(S') around the drum(40).
Patent KR-20020049683-A (KR)
Title: Unit pixel driving controller for improving image quality and sensitivity
Inventor: CHOI AN SIK
IPC: H04N5/376
Filed: 2000-12-20
Abstract: PURPOSE: A unit pixel driving controller for improving sensitivity and picture quality of an image sensor is provided to drive unit pixels to maintain a specific amount of charges in a photo-diode so as to improve sensitivity and picture quality of the image sensor and reduce noise. CONSTITUTION: A unit pixel driving controller includes a photo-diode, a transfer transistor for transferring photon to a sensing node in response to the first control signal, a reset transistor for discharging the photon stored in the sensing node in response to the second control signal for detection of the next signal, a drive transistor serving as a source follower, and a select transistor for addressing in response to the third control signal. The controller further includes the first NAND gate(200) for receiving a select signal and a scan signal from an external pad to NAND the signals, the first inverter(201) for inverting the output of the first NAND gate to output it as the third control signal, and the second NAND gate(202) for NANDing a reset signal and the scan signal. The controller also has a delay(203,204) for delaying the output of the second NAND gate and outputting it as the second control signal, a transmission gate(205) for transmitting a transfer signal inputted from the external pad, and a latch(206) for latching the output signal of the transmitter. The controller further has the second inverter(207) for inverting the output of the latch and outputting it as the first control signal, the first transistor(NM6) connected between the output port of the transmission gate and ground, and the second transistor(NM7) connected between the output port of the transmission gate and power supply.
Patent KR-20020051338-A (KR)
Title: Method for preparing cycloolefin copolymer having desirable material properties
Inventor: LEE DONG HO
IPC: C08F210/04
Filed: 2000-12-22
Abstract: PURPOSE: Provided is a process for producing a cycloolefin copolymer having a high cycloolefin content and excellent properties, which can increase a catalyst activity and reduce the amount of comonomers. CONSTITUTION: The cycloolefin copolymer is produced by adding an alpha-olefin, different from a base monomer, or a vinyl monomer as the third monomer to the base monomer comprising C2-C5 alpha-olefin and cycloolefin in the presence of a metallocene catalyst and a cocatalyst, wherein the molar ratio of the third monomer is 0.0001-3.0 based on the alpha-olefin of the base monomer. The third monomer is propylene, 1-butene, 1-pentene, 1-hexene, styrene, alpha-methyl styrene, and etc. And the C2-C5 alpha-olefin is ethylene and the cycloolefin is cyclobutene, cyclopentene, vinyl norbornene, ethyl norbornene, and etc.
Patent KR-20020056072-A (KR)
Title: Epoxy resin composition for sealing semiconductor element
Inventor: BAE GYEONG CHEOL
IPC: C08L63/00
Filed: 2000-12-29
Abstract: PURPOSE: Provided is an epoxy resin composition as high reliability sealant which does not show the crack or interfacial peeling phenomenon even in solder reflow process at 260 deg.C or more. CONSTITUTION: The epoxy resin composition comprises epoxy resin, hardener, hardening stimulator, inorganic filler, fire retardant, colorant, and other additives. The epoxy resin or hardener component is a resin represented by formula 3(wherein R1 represents OH or formula(a); R2 is selected from the group consisting of -X- and formula (b)-(f) ; X is O or S; Y is N or P; R3 is any one selected from H, or an alkyl group and aromatic hydrocarbon having C1-C18, and n is an integer of 1-10) only, or a mixture of the resin and at least one selected from the group consisting of ortho cresol novolac epoxy resin, non-phenyl epoxy resin, polyfunctional epoxy resin, naphthalene type epoxy resin, dicyclopentadiene type epoxy resin, novolac phenol resin, xyloc phenol resin, polyfunctional phenol resin, naphthalene type phenol resin and dicyclopentadiene type phenol resin. The resin is used in amount of 10 wt% based on amount of total epoxy resin or hardener.
Patent KR-20020056602-A (KR)
Title: Addition copolymers of cycloolefins containing sulfur groups and method for preparing the same
Inventor: JUN SEONG HO
IPC: C08G61/08
Filed: 2000-12-29
Abstract: PURPOSE: Provided are a cyclic copolymer containing sulfur, which has low dielectric constant and hygroscopic, high glass transition temperature, and excellent heat stability, oxidative stability, chemical resistance, and adhesion to metal, and which has toughness, and method for preparing the same. CONSTITUTION: The copolymer is a copolymer of a norbornene compound containing sulfur and a norbornene compound. The copolymer is prepared by copolymerizing a norbornene-based monomer containing sulfur(selected from formulae 1,2, and 3) and at least one of norbornene-based monomer(formula 4) in the presence of catalyst system of metal compound of group VIII. The copolymer has low dielectric constant, and excellent heat stability and strength, and can be used as dielectric electronic material, and so on. Also, the copolymer does not generate by-products when adhered to metal, and thus shows excellent adhesion to metal.
Patent KR-20020058965-A (KR)
Title: Choke length control circuit for VCO
Inventor: LIM JONG HO
IPC: H03L7/187
Filed: 2000-12-30
Abstract: PURPOSE: A choke length control circuit for a voltage control oscillator(VCO) is provided to hold a choke ground securely by the simultaneous use of a switching transistor and a switching diode. CONSTITUTION: A choke length control circuit for a VCO provides a first and a second inductors, a first capacitor for resonating with the first inductor, a second capacitor for resonating with the second inductor, a switching transistor, a first and a second resistors and a switching diode. The first and the second inductors are connected to a driving power supply and a ground in series, sequentially. The first capacitor is connected to the driving power supply at one end and to the ground at the other end. The second capacitor is connected to a common connecting point of the first and the second inductors at one end. The switching transistor is coupled in such a way that its collector terminal is coupled to one end of the first capacitor and its base terminal is coupled to an input terminal of the switching signal. The first and the second resistors are connected between the emitter and the ground of the switching transistor in series and the common connecting point thereof is connected to the other end of the second capacitor. The anode of the switching diode is connected to the common connecting point of the first and the second resistors and the cathode of the switching diode is connected to the ground.
Patent KR-20010022421-A (KR)
IPC: B01J19/12
Filed: 1998-07-27
Abstract: A method for producing a filter includes the steps of providing a blank of etchable semiconductor material having a first side and a second side and affixing a holding element to the blank. The holding element is chemically resistant to an etching solution. A current source is connected to the blank and at least one of the first and second sides of the blank is illuminated with light. The holding element and the blank are immersed in the etching solution until the first side of the blank is wetted so that the first side is etched electrochemically. The holding element is affixed to the blank such that contact areas between the holding element and the blank remain free of the etching solution.
Patent KR-20010024206-A (KR)
IPC: C10L1/14
Filed: 1998-09-14
Abstract: Products formed from polycarboxylic acids and epoxides form useful lubricity additives.
Patent KR-20010032834-A (KR)
IPC: H02J17/00
Filed: 1998-12-04
Abstract: 유도 전력 전송용으로 사용되는, 긴 1차 트랙웨이(1102)에 효과적인 양의 고 주파수 AC 전력을 제공하는 장치는 고의적 미스 매칭을 위한 트랜스컨덕턴스 파이 필터(1105)를 포함하여, 전류 흐름과 트랙 임피던스가 독립되게 한다.  이로써, 전원(1101)은 전압원인 것처럼 보이고, 트랙웨이는 저 리액턴스인 것처럼 보인다.  출력부(1106)를 단락시키면, 접속된 트랙웨이를 전력으로부터 안전하게 차단할 수 있다.  필터는 긴 트랙을 구동할 수 있도록 전압을 단계적으로 높일 수 있다.  특성 임피던스에서 트랙을 종단시키면서 동작 주파수에서만 단락으로서 작동하는 트랙 종단 장치가 개시된다.  유도 전력 전송용으로 사용된 긴 1차 트랙웨이에 효과적인 양의 고 주파수 AC 전력을 제공하는 반 브리지 및 전 브리지 전원(1101)이 개시된다.
Patent KR-20010033626-A (KR)
Title: 화학 살균된 물품의 폭기방법 및 장치
IPC: A61L2/20
Filed: 1998-12-16
Abstract: 화학적으로-살균된 물품을 폭기하는 방법이 제공되며, 
     상기 방법은 
     물품을 공-피흡착질(co-adsorbate)가 기화 상태로 잔류하도록 하는 상태하에 상기 물품에 의해 흡수된 최소한의 살균제를 대치하기에 충분한 조건하에 부분압을 갖는, 최소 하나의 공-피흡착질에 노출시키는 단계로 이루어진다.
Patent KR-20010033815-A (KR)
IPC: F02B77/13
Filed: 1998-10-08
Abstract: The invention relates to a sound protective screen comprising a material layer made of plastic and provided with indentations or chambers. By making the material layer consist of a heavy layer (1) it is easier to produce the inventive screen without substantially detracting from the sound absorbing qualities thereof.
Patent KR-20010040729-A (KR)
Title: 시클로알칸의 직접 산화
IPC: C07C27/12
Filed: 1999-02-09
Abstract: 시클로알칸을 단일 단계로 직접 산화시켜 상응하는 알콜 및 케톤을 함유하는 혼합물을 형성하는 촉매접촉 방법이 개시되어 있다.  구체적으로는, 본 발명은 시클로알칸을 산소원 및 촉매량의 불균일 촉매와 접촉시킴으로써 시클로알칸을 산화시키는 방법에 관한 것이다.  본 발명의 촉매에는 금 (금의 졸-겔 화합물을 포함함), 및 Cr, Co, Zr, Ta, Si, Mg, Nb, Al 및 Ti의 특정 조합물을 함유하는 졸-겔 화합물이 포함되며, 이들 특정 금속은 수산화물 또는 산화물, 또는 이들의 조합물의 무기 매트릭스와 같이, 산화물과 조합되어 있다.  상기 촉매는 또한 임의로는 적합한 지지 성분상에 지지될 수 있다.
Patent KR-20010034526-A (KR)
Title: 측면 높이가 낮은 볼 격자 배열 반도체 패키지
IPC: H01L23/31
Filed: 1999-01-28
Abstract: 본 발명은 측면 높이가 매우 낮은 볼 격자 배열 반도체 패키지(BGA)와  그 제작방법에 관한 것이다. 기판에는 구멍이 제공된다. 박막 물질은 기판에 고정되고 구멍을 덮어서 공동을 형성한다. 반도체 다이는 박막 물질 위에서 형성된 공동 안에 장치된다. 반도체 다이는 덮혀지는데, 덮여지는 동안에 박막 물질이 반도체 다이를 지지한다. 공동을 형성하기 위해 박막물질을 사용한다는 것은 측면 높이가 매우 낮은 볼 격자 배열 패키지를 제작함에 있어서 비용 면에서 효과적인 방법이다.
Patent KR-20010042044-A (KR)
Title: 경화 지급 장치
IPC: G07F11/04
Filed: 2000-01-27
Abstract: 본 발명은 코인 튜브 내에 적재 수용된 경화(硬貨)를 1매씩 지급하는 슬라이드 부재의 왕복 주행 거리를 각 구성 요소 부품의 대폭적인 설계 변경 없이 크게 확보하기 위해, 슬라이드 부재를 왕복 주행시키는 왕복 주행 수단의 캠홈을 대략 S자형으로 형성하도록 한 것이다.
Patent KR-20010071200-A (KR)
Title: 드레드 장력의 자동 조절 방법 및 장치
IPC: D05B45/00
Filed: 1999-05-06
Abstract: 드레드 장력을 자동으로 조정하는 컴퓨터화 스티칭 장치에 관하여 기술하였다.  한 실시태양에 있어서, 적어도 두 개의 인자를 사용하여 다음 스티치를 위한 목적한 드레드 소비량을 결정한다.  드레드 길이 엔코더 (23)를 사용하여 특정 스티치에 실제 소비되는 드레드의 량을 측정한다.  조작자는 조작자 입력장치 (24) 내에 목적한 드레드 길이 비를 입력하거나 특정의 스티치에 사용되는 목적한 드레드 길이에 관련된 균등인자를 입력해야 한다.  속도, 스티치 길이, 직물 두께, 또는 스티치 각변화 등의 다른 인자를 적어도 조작자의 입력과 함께 사용하여 목적한 드레드 소비량을 측정한다. 드레드의 장력은 특정의 스티치에 소비된 실제 드레드에 영향을 미치는 스티치 제어 시스템에 의해 조정한다.
Patent KR-20010052890-A (KR)
IPC: A41D13/12
Filed: 1999-06-17
Abstract: 장치착용자의 몸통의 주위에 감겨지며 병렬배치된 적어도 두 개의 절편(12a, 12b)를 갖는 교정본체(12)를 구비하는 교정장치(10)가 제공된다.  적어도 두 개의 절편(12a, 12b)의 자유단부(14a, 14b)에는 자유단부를 서로 해제가능하게 고정하기 위한 수단(16b, 16c)이 제공된다.  적어도 두 개의 케이블(28)이 제공되는데, 각 케이블(28)은 적어도 두 개의 절편(12a, 12b)에 동작가능하게 연결된다.  적어도 두 개의 절편(12a, 12b)에는 적어도 두 셋트의 풀리(22a, 22b, 24a, 24b)가 장착되며 적어도 두 개의 절편(12a, 12b)에 동작가능하게 연결된 각 케이블(28)은 교대로 적어도 두 개의 절편(12a, 12b)의 각 절편상의 풀리(22a, 22b, 24a, 24d)를 통하여 진행하며, 적어도 두 개의 절편(12a, 12b)을 서로 당김으로써 각 케이블(28)을 짧게 하면 교정장치(10)가 조여진다.
Patent KR-20020070533-A (KR)
Inventor: KWAK JONG WOON
IPC: C01B31/08
Filed: 2001-02-28
Abstract: PURPOSE: An activated carbon for water purification is provided, which can remove effectively organics and suspended substance in raw water. It is also excellent in removing algae organic matter by using activated carbon that is impregnated with inorganic coagulant containing copper component. CONSTITUTION: The activated carbon is prepared by impregnating inorganic coagulant into activated carbon in an amount that metal component in the inorganic coagulant is impregnated within the range of 0.05-10.0 wt.% into activated carbon, wherein the inorganic coagulant is one or their mixture selected from the group consisting of ferrous chloride, ferric chloride, ferrous sulfate, ferric sulfate, poly ferric sulfate, poly ferric chloride, aluminum chloride, aluminum sulfate, poly aluminum sulfated, poly aluminum chloride, aluminum nitrate, copper sulfate, copper ethanol amine, copper tri-ethanol amine, copper chloride, copper nitrate, silver nitrate, silver chloride, sodium aluminate and sodium silicate.
Patent KR-20020071574-A (KR)
Title: Soi power transistor and manufacturing method thereof
Inventor: CHOI YEON IK
IPC: H01L29/78
Filed: 2001-03-07
Abstract: PURPOSE: An SOI(Silicon On Insulator) LDMOSFET(Lateral Double Diffused Metal Oxide Semiconductor Field Effect Transistor) is provided to improve trade-off characteristics of a breakdown voltage and an on-resistance by using a vacuum layer as a buried layer. CONSTITUTION: An SOI LDMOSFET comprises a source electrode(41), a drain electrode(43), a gate electrode(42), a P-body(32) and an N-drift region(30). At this time, a buried layer having a vacuum layer in a defined portion is formed under the P-body(32) and the N-drift region(30). At this time, the buried layer comprises a buried vacuum layer(61) formed with the vacuum layer and a buried oxidation layer(62) formed with an oxidation layer.
Patent KR-20020074526-A (KR)
Title: System and method of data compression for moving pictures
Inventor: KIM PYUNG AM
IPC: H04N21/234
Filed: 2001-03-20
Abstract: PURPOSE: A motion picture compressing method and a system thereof are provided to store a motion picture movie of 150 minutes in a single VCD and realize the video stream transmission for VOD via internet. CONSTITUTION: A motion picture compressing method includes the steps of producing VOD(Video On Demand) file in the MPEG format composed of audio and video signals from an analog motion signal, extracting all I frames existing between an initial I frame and a final I frame by separating I frames composing respective picture blocks into a plurality of B frames and P frames in I frames composing picture blocks and a plurality of B frames and P frames coded and disposed after the I frames for the picture blocks composing the VOD file, and compressing the initial and final I frames and the plurality of B frames and the plurality of P frames after deleting the I frames existing between the initial I frame and the final I frame among the separated plurality of I frames.
Patent KR-20020075115-A (KR)
Inventor: LEE JU SEOP
IPC: B42F1/00
Filed: 2001-03-23
Abstract: PURPOSE: A paper holder a pressing plate of which is lifted even by less force by releasing the locking state of a pusher after aligning such things as paper on a base plate by lifting a pressing part of the pressing plate from the base plate, thereby pressing thus fixing paper onto the base plate using the pressing part. CONSTITUTION: The paper holder comprises a base plate(4) on the bottom surface of which a locking part(1) is integrally formed, on which tunnel shaped guiders(2,3) are concentrically formed, and in the upper part of which first and second hinge pins(5,9) are formed; a pressing plate(8) which is rotationally fixed to the base plate(4) by the first hinge pin(5), and on the bottom surface of which sliding members(6,7) are formed, the sliding members(6,7) are slid along the outer surface of the guiders(2,3) so as to be rotated; a pusher(11) which is rotationally fixed to the pressing plate(8) by the second hinge pin(9), and on which a catching part(10) removably coupled to the locking part(1) is formed; and an elastic member(13) which is fixed and supported to the first hinge pin(5) so that the elastic member(13) elastically biases pressing of the base plate(4) by a pressing part(12) of the pressing plate(8) to the initial state, the catching part(10) is coupled to the locking part(1) when pressing the pusher(11) so that the pressing plate(8) is locked in the state that the pressing plate(8) is lifted, and locking of the catching part(10) is released by restoring force of the elastic member(13) when pressing the pusher(11) again so that the upper surface of the base plate(4) is pressed by the pressing part(12).
Patent KR-20010044810-A (KR)
Inventor: YANG JEONG HO
IPC: F16D25/08
Filed: 2001-03-27
Abstract: PURPOSE: A master cylinder is simple in structure comparing with a center valve type master cylinder and prevents interference between a seal and a bypass hole. CONSTITUTION: A master cylinder has a first round part(74), a compensating hole(54) and a second round part(76). The first round part(74) is formed on an inner wall(68) of the master cylinder for oil to bypass and on the corner of a first bypass hole(52) to dissolve interference with a seal(68). The compensating hole(54) is formed on one side of the first bypass hole(52) by penetrating the upper part of a piston guide(73) of a second piston(58) to easily compensate oil. The second round part(76) is formed on the inner wall(68) of the master cylinder for oil to bypass and on the corner of a second bypass hole(53) to dissolve interference with a seal(72).
Patent KR-20020076797-A (KR)
Title: hard mask for forming via hole in dual damascene process
Inventor: LEE SEONG GWON
IPC: H01L21/28
Filed: 2001-03-30
Abstract: PURPOSE: A hard mask for fabricating a via hole in a dual damascene process is provided to prevent an increase of a dielectric constant in a subsequent process, by minimizing the hard mask so that the hard mask is left in the periphery of a portion of the via hole to be etched and in a portion where a metal interconnection is to be formed later. CONSTITUTION: The first interlayer dielectric(41) and a trench having a defined via hole formation region are formed. The second interlayer dielectric(44) is formed on the first interlayer dielectric. The hard mask(42) is formed on the first interlayer dielectric, fabricated in the periphery of the via hole formation region and having a width broader than the via hole formation region in an in-line direction.
Patent KR-20010100895-A (KR)
Title: 액정 매질
IPC: C09K19/30
Filed: 2001-04-12
Abstract: 본 발명은 하나 이상의 화학식 1의 화합물: 
     [화학식 1] 
     
       
     
     (상기 식에서, 
     R 1 및 R 2 는 각각 서로 독립적으로 H, 비치환, CN 또는 CF 3 로 일치환되거나, 할로겐으로 하나 이상 치환된 탄소수가 15 이하인 알킬 또는 알케닐 라디칼이고, 여기서, 이들 라디칼 중의 하나 이상의 CH 2 기는 또한 각각 서로 독립적으로 -O-, -S-, , -CO-, -CO-O-, -O-CO- 또는 -O-CO-O-에 의해 O 원자들이 서로 직접 결합되지 않는 방식으로 치환될 수 있다) 
     을 포함하는 것을 특징으로 하는, 포지티브 유전 이방성을 가진 극성 화합물의 혼합물을 기초로 하는 액정 매질에 관한 것이다.
Patent KR-20020082363-A (KR)
Inventor: WON BYEONG MUK
IPC: H01J29/04
Filed: 2001-04-23
Abstract: PURPOSE: A heater for cathode ray tube is provided to prevent a crack of an alumina insulating layer and lengthen a lifetime of the heater by forming an insulating layer including acicular alumina particles. CONSTITUTION: An insulating layer is coated on a surface of a heater. Acicular alumina particles are included in the inside of the insulating layer. The content of the acicular alumina particles included in the inside of the insulating layer corresponds to 50 or more percent of the volume of total alumina particles. An aspect ratio of a short axis and a long axis of the acicular alumina particle is 5.0 or more, at least. A mean size of the acicular alumina particle is 5.0 to 10.0 micro meter on the basis of the long axis. The acicular alumina particles having sizes of 1.0 to 20.0 micro meter corresponds to 90 percent of the volume of the total acicular alumina particles on the basis of the long axis.
Patent KR-20020083827-A (KR)
Title: Apparatus for cooling and removal of moisture of headlamp using heat pipe
Inventor: LEE CHANG HO
IPC: B60Q1/04
Filed: 2001-04-30
Abstract: PURPOSE: A cooling and dehumidifying apparatus of a headlamp by using a heat pipe is provided to improve performance of the headlamp, and to lengthen the life span of the headlamp by cooling and dehumidifying the headlamp housing. CONSTITUTION: A closed container is filled with operating fluid after forming vacuum, and operating fluid is boiled away in an evaporation part from inflow of heat. Steam is condensed and liquefied in a condensation part through a core part, and heat is transferred from the evaporation part to the condensation part by gravity. A heat pipe(20) is installed in the upper part of a headlamp housing, and plural radial fin parts(40) are fixed in the heat pipe for radiating and absorbing heat. Moisture is liquefied in the headlamp housing, and water is condensed in the evaporation of the heat pipe. An inclined discharge plate(11) having the V-shaped section is connected to a discharge port(12) preventing inflow of water. Water is discharged out of the headlamp housing. Performance of the headlamp is improved with cooling and dehumidifying the headlamp housing.