200819708 九、發明說明 【發明所屬之技術領域】 本發明是有關照射雷射線與雷射光點的雷射墨線儀用 雷射頭。 【先前技術】 從以往，在家屋等的建築作業時，使用對於壁面或天 花板投射藉著雷射光所發出水平方向的雷射線或垂直方向 的雷射線的雷射墨線儀。其雷射墨線儀是設置在屋內外的 預定位置，將雷射線照射在壁面等，根據其雷射線在壁面 等進行作爲標記的墨線。 從雷射墨線儀的設置位置到照射雷射線的壁面爲止的 距離短的場合，由於可確實目視照射在壁面上的雷射線， 因此可容易進行對於壁面的墨線作業。但是，從雷射墨線 儀設置位置的距離爲1 〇公尺以上分開的明亮壁面上，並 不能目視對此所照射的雷射線。因此，將光集中的雷射光 點照射在雷射線上的1處的發明爲本案申請人所提出的申 請（曰本專利文獻1 )。將光集中的雷射光點照射在雷射 線上的1處時，即使不能看見雷射線仍然可看見雷射光點 ，及可得知雷射線通過其雷射光點的位置。依賴其雷射光 點的位置，使用檢測雷射線的雷射光受光器，即可容易辨 識雷射線的位置，對壁面等進行標記用的墨線。 在此，根據第3圖說明與雷射線一起雷射光點照射在 壁面的日本專利文獻1的技術如下。雷射墨線儀1 〇根據 -4 - 200819708 需要分別安裝1個到複數個水平方向用的雷射頭1 2與垂 直方向用的雷射頭12。水平方向用與垂直方向用的雷射頭 1 2皆爲相同構成。雷射頭1 2爲作爲光源的半導體雷射14 ;複數個透鏡16a、16b、16c所構成作爲聚光用的透鏡單 元1 8 ;將來自半導體雷射1 4的雷射光呈直線形照射在壁 面等用的作爲雷射線産生手段棒型透鏡20 ;保持半導體雷 射1 4與透鏡單元1 8用的第一外殼22 ;及保持棒型透鏡 20用的第二外殼24所構成。 以往的雷射頭1 2中，從半導體雷射1 4通過透鏡單元 1 8的雷射光僅通過棒型透鏡20射出到雷射頭1 2的外部， 對於對象物的壁面照射雷射線。除了雷射線的之外照射雷 射光點的專利文獻1的技術是在鄰接第二外殻24的棒型 透鏡20的位置上，形成作爲雷射光點産生手段的開縫及 空間26 (第3圖及第4圖）。從半導體雷射14通過透鏡 單元1 8的雷射光爲經由棒型透鏡2 0與空間2 6，通過棒型 透鏡2 0形成直線的雷射線2 8，及通過空間2 6形成點的雷 射光點3 0的2部份所形成（第3圖）。在雷射墨線儀i 〇 到壁面3 2爲止的距離增長，或壁面3 2附近明亮場所的場 合，會有使直線的雷射線2 8不能反映到壁面3 2的場合。 即使如上述雷射線2 8不能反映到壁面3 2的場合，仍然可 以將光聚集的雷射光點3 0呈現在壁面3 2上。 〔日本專利文獻1〕 特開2000-28359 【發明內容】 -5- 200819708 〔發明所欲解決之課題〕 射出垂直方向的雷射光用的雷射頭1 2是從水平面 朝向約3 5度上方的仰角安裝在雷射墨線儀1 〇上。以約 度的仰角從安裝在雷射墨線儀1 0的雷射頭1 2所照射的 射線2 8是以大約1 4 0度的廣角度跨壁面與天花板照射 射線。 雷射墨線儀1 0上，一般安裝有2個以上垂直方向 的雷射頭1 2。雷射墨線儀1 0具備2個垂直方向用雷射 12的理由是如第5圖表示，例如有從第1個垂直方向用 雷射頭1 2 (第5圖中未圖示）對於正面壁面3 2 a照射第 雷射線2 8 a，從第2個垂直方向用的雷射頭1 2對於右壁 3 2 b照射弟一^雷射線2 8 b ’在天花板3 4中繪製使第一'雷 線2 8 a與第二雷射線2 8 b交叉用的交叉點（大直角）3 6 必要。該大直角3 6是位在雷射墨線儀丨〇的正上方。並 爲了使大直角3 6位置上的第一雷射線2 8 a與第二雷射 28b的交叉角度形成直角，設定對於2個垂直方向用的 射頭1 2的雷射墨線儀1 〇的安裝位置。 如上述，射出垂直方向的雷射光用的雷射頭1 2是 約3 5度的仰角安裝在雷射墨線儀1 〇上。因此，第5圖 ’從雷射墨線儀10到正面壁面32a或者右壁面32b爲 的距離增長的場合，形成在第一雷射線2 8 a上的雷射光 30會出現在正面壁面32a的上方或天花板34上。同樣 ’形成在第二雷射線28b上的雷射光點3〇會出現在右 壁面3 2b的上方或天花板上。在壁面32a、32b的上方 以 35 雷 雷 用 頭 的 面 射 的 且 線 雷 以 中 止 點 地 面 或 200819708 者天花板3 4上出現雷射光點3 0時，不容易尋找雷射光點 3 0的位置，此外也不易進行使用雷射受光器尋找雷射線 28a、28b的作業，並且會有對於壁面32a、32b進行作爲 標記用的墨線作業困難。 只要將出現在正面壁面32a或右壁面32b的雷射光點 3 〇的位置下降到下方的位置，即可容易進行尋找雷射線 2 8a、2 8b的作業或進行對壁面32a、32b的墨線作業。由 於使得雷射光點3 0的位置下降到下方，因此可考慮將發 出垂直方向雷射光的雷射頭1 2的仰角從3 5度例如下降約 8度左右。但是，雷射頭12的仰角減小時，第一雷射線 28a與第二雷射線28b在天花板交叉的交叉點（大直角） 3 6的線會變得非常暗而無法辨識。 本發明是以提供可確實呈現天花板的大直角，同時使 出現在雷射線上的雷射光點呈現在壁面上作業人員眼睛高 度附近的雷射墨線儀爲目的。本發明的其他目的爲當雷射 光點從雷射線上偏離時容易進行雷射光點與雷射線上對齊 的調整。 〔解決問題的手段〕 本發明所涉及的雷射墨線儀用雷射頭是具備雷射墨線 儀，其特徵爲，具備：外殼；光源；透鏡單元；從上述光 源使通過上述透鏡單元的雷射光通過雷射線照射在對象物 用的雷射線産生手段；及鄰接上述雷射線産生手段所設置 使得從上述光源通過透鏡單元的雷射光通過雷射光點照射 200819708 在對象物用的雷射光點産生手段的雷射頭中，將通過上述 雷射光點産生手段的雷射光進行方向變更用的反射手段安 裝在上述外殻。本發明的特徵是以形成在使上述雷射光點 産生手段鄰接於上述雷射線産生手段的上述外殻的空間， 其空間具備上述反射手段。本發明的特徵爲在上述外殼可 自由位移地保持上述雷射線産生手段，上述外殼安裝有使 上述雷射線産生手段的位置位移用的2個調整手段。本發 明的特徵爲在上述外殼固定可將上述雷射線産生手段自由 位移地保持在上述外殼的保持手段，爲利用外力使得上述 保持手段位移的原材料所形成。本發明的特徵爲在上述外 殼形成內螺紋，形成將上述調整手段與上述內螺紋栓鎖的 外螺紋。 〔發明效果〕 本發明是在垂直方向的雷射頭中，藉反射手段改變顯 示出雷射光點的雷射光的進行角度，使雷射光點下降到下 方。例如’形成在從雷射墨線儀離開約1 〇公尺壁面的預 定高度（例如1 .5公尺左右的高度）呈現雷射光點的可能 。藉此’在壁面的大致眼睛的高度呈現雷射光點，可以容 易尋找雷射光點，與以往比較可以大幅地縮短對於壁面的 墨線作業時間。 由於藉著反射手段改變雷射光點的方向，因此會有雷 射光點從雷射線偏移之虞，而必須要調整使雷射光點與雷 射線對齊。因此，將反射手段固定在外殼上，將雷射線産 -8- 200819708 生手段可自由位移地保持在外殼上，以2個調整手段微調 整相對於外殼之雷射線産生手段的位置與角度。藉此，可 以短時間容易地將雷射光點對齊在雷射線上。 【實施方式】 接著，根據圖示說明本發明如下，第1圖爲本發明所 涉及雷射墨線儀用雷射頭的剖視圖。第1圖中與第3圖相 同的符號是表示同一構件。本發明所涉及垂直方向用的雷 射頭40有2個被安裝在雷射墨線儀1 〇上。再者，雷射墨 線儀1 〇同樣安裝有水平方向用的雷射頭，在此省略其說 明。雷射頭4 0爲作爲光源的半導體雷射 14 ;複數透鏡 16a、16b、16c所構成可聚光用的透鏡單元18 ;作爲將來 自半導體雷射1 4的雷射光呈直線形照射在壁面等用的雷 射線產生手段的棒型透鏡20 ;保持半導體雷射1 4與透鏡 單元18用的第一外殻22 ;保持棒型透鏡20用的第二外殼 24 ;及第二外殼24中鄰接棒型透鏡20所形成，作爲將來 自半導體雷射1 4的雷射光呈點狀照射在壁面等用的雷射 光點產生手段的開縫或空間26所構成。也可以在開縫或 空間26具備透明的玻璃等以防止塵埃進入之用。以上爲 止的雷射頭4 0的構成是與第3圖表示的雷射頭1 2的構成 相同。 本發明的雷射頭40中，空間26具備作爲改變通過空 間26的雷射光角度用的反射手段的鏡子42。鏡子42的相 對於法線的入射角與反射角爲同角度’並且入射角與反射 -9- 200819708 角爲90度以下。利用該鏡子42改變射出雷射光點的雷射 光角度，改變角度可以降低照射在壁面3 2的雷射光點44 的高度降低。 即使從雷射墨線儀10到正面壁面32a或右壁面32b 爲止的距離增長的場合，仍可藉著鏡子42的位置與角度 的調整，如第5圖表示’形成在垂直直線方向的第一雷射 線2 8 a上的雷射光點4 4或形成在垂直方向的第二雷射線 2 8b上的雷射光點44可藉著習知的雷射頭12所呈現的雷 射光點3 0使其充分地降低呈現。藉著鏡子42的位置與角 度的調整，使得從雷射墨線儀1 0的距離分開大約1 0公尺 (該距離可根據其需要加以適當設定）左右的正面壁面 3 2a或右壁面32b中，呈現在作業人員眼睛的高度附近（ 約1 · 5公尺的高度）。如上述，由於可以將形成在垂直直 線方向的雷射線上的雷射光點44呈現在壁面的眼睛高度 ’因此即使不能看見雷射線，仍然可以容易尋找雷射光點 4 4的位置，使用雷射受光器來察覺雷射線，容易進行墨線 作業。 上述的說明中，作爲改變照射在壁面3 2的雷射光點 4 4的反射角度的反射手段雖是使用鏡子4 2，但是反射手 段也可以使用稜鏡來代替鏡子4 2。利用稜鏡的折射，形成 在垂直方向的雷射線2 8上的雷射光點4 4也可以在正面壁 面32a或右壁面32b呈現在作業人員的眼睛高度附近。本 發明是在反射手段包含稜鏡，在「光的反射」包含「利用 稜鏡的光的折射」。 -10- 200819708 發出雷射光點44的雷射光在本發明的雷射頭40中， 藉著鏡子42在中途改變進行方向。因此，雷射光點44會 有與雷射線28不能對齊的疑慮。在雷射線28上無雷射光 點44的場合，雷射墨線儀1 0到壁面3 2爲止的距離短時 ，雷射光點44雖然有如出現在雷射線2 8上，但是雷射墨 線儀1 〇到壁面3 2爲止的距離增長時，雷射光點44明顯 從雷射線2 8上偏離。雷射光點44不在雷射線2 8上的場 合，即使使用雷射受光器也不能簡單地尋找雷射線2 8。 發出雷射光點44的雷射光的角度由於爲鏡子42所改 變，因此調整相對於第二外殼24的鏡子42的安裝角度， 隨後以黏著劑將鏡子42固定在第二外殼24上。但是，以 黏著劑將鏡子42固定在第二外殼24時，同樣會使得相對 於第二外殼24的安裝角度變化，產生雷射光點44與雷射 線2 8不對齊的問題。 爲了消除此一問題，調整相對於第二外殼24的棒型 透鏡20的角度而非調整鏡子42的角度。如第1圖及第2 圖表示，棒型透鏡20的長邊方向兩端是以作爲保持手段 的承接構件46及按壓構件48夾持。可藉著外力使作爲保 持手段的承接構件4 6及按壓構件4 8的至少一方位移的撓 性原材料所形成。在第二外殼2 4形成2個到達棒型透鏡 20側面的孔50，在其孔50的內壁形成內螺紋52。其內螺 紋52栓鎖作爲調整手段的外螺紋54，將2個外螺紋54中 的至少1個接觸按壓在棒型透鏡2 0，調整相對於第二外殼 24的棒型透鏡2〇的角度。將外螺紋54的前端頂部形成圓 -11 - 200819708 形的圓錐形’容易進行棒形透鏡20角度的微調，並且不 會損傷棒形透鏡。 2個外螺紋5 4的進行軸方向（γ )爲彼此平行，與棒 形透鏡20的軸方向（z )是設定形成偏移的狀態。藉此， 可以2個外螺紋54進行相對於第二外殻24的棒形透鏡20 的位置與角度的調整，容易使雷射光點與雷射線對齊。 【圖式簡單說明】 第1圖爲本發明所涉及墨線移用雷射頭的剖視圖。 第2圖是表示棒形透鏡的角度調整機構的透視圖。 第3圖爲習知墨線移用雷射頭的剖視圖。 第4圖是表示從第3圖的A方向顯示之棒形透鏡與空 間的位置關係圖。 第5圖是表示藉雷射墨線儀所照射的雷射線與雷射光 點的透視圖。 【主要元件符號說明】 1 0 :雷射墨線儀 1 4 :半導體雷射 1 8 :透鏡單元 2 0 :棒形透鏡 22 :第一外殼 2 4 :第二外殼 2 6 :空間 -12- 200819708 2 8 :雷射線 2 8a 第一雷射線 28b 第二雷射線 32 :壁面 4 0 :雷射頭 4 2 :鏡子 4 4 :雷射光點 46 :支撐構件 4 8 :按壓構件 5 2 :內螺紋 5 4 :外螺紋200819708 IX. Description of the Invention [Technical Field of the Invention] The present invention relates to a laser head for a laser line apparatus for irradiating a lightning ray and a laser spot. [Prior Art] Conventionally, in a construction work such as a house, a laser ray ray that projects a horizontal ray or a vertical ray of a ray from a laser beam to a wall surface or a ceiling plate is used. The laser line meter is installed at a predetermined position inside and outside the room, and irradiates a lightning ray on a wall surface or the like, and performs an ink line as a mark on the wall surface according to the lightning ray. When the distance from the installation position of the laser ray ray instrument to the wall surface on which the lightning ray is irradiated is short, it is possible to surely visually illuminate the lightning ray on the wall surface, so that the ink line operation on the wall surface can be easily performed. However, the bright ray that is separated from the position where the laser ink is set at a distance of 1 〇 or more cannot be visually observed. Therefore, the invention in which the laser spot in which the light is concentrated is irradiated to one spot on the thunder ray is an application filed by the applicant of the present application (Patent Document 1). When the laser spot of the concentrated light is irradiated to one spot on the laser line, the laser spot can be seen even if the thunder ray is not visible, and the position of the thunder ray passing through the spot of the laser beam can be known. Depending on the position of the laser spot, a laser light detector that detects the thunder ray can be used to easily identify the position of the thunder ray and the ink line for marking the wall surface. Here, the technique of Japanese Patent Document 1 in which a laser spot is irradiated onto a wall surface together with a lightning ray is described below with reference to Fig. 3 . Laser Line Meter 1 〇 According to -4 - 200819708, it is necessary to separately mount one laser head 12 for a plurality of horizontal directions and the laser head 12 for a vertical direction. The horizontal direction is the same as that of the laser head 1 2 for the vertical direction. The laser head 12 is a semiconductor laser 14 as a light source; the plurality of lenses 16a, 16b, and 16c are configured as a lens unit 18 for collecting light; and the laser light from the semiconductor laser 14 is linearly irradiated on the wall surface. The rod lens 20 is used as a thunder ray generating means, the first outer casing 22 for holding the semiconductor laser 14 and the lens unit 18, and the second outer casing 24 for holding the rod lens 20. In the conventional laser head 12, the laser light that has passed through the lens unit 18 from the semiconductor laser 14 is emitted only to the outside of the laser head 12 through the rod lens 20, and the wall surface of the object is irradiated with a lightning ray. The technique of Patent Document 1 for irradiating a laser spot other than a thunder ray is to form a slit and a space 26 as a laser spot generating means at a position adjacent to the rod lens 20 of the second casing 24 (Fig. 3) And Figure 4). The laser light from the semiconductor laser 14 through the lens unit 18 is a laser beam 28 that forms a straight line through the rod lens 20 and the space 26 through the rod lens 20, and a laser spot that forms a point through the space 26 2 parts of 30 are formed (Fig. 3). The increase in the distance from the laser illuminator i 到 to the wall surface 3 2 or the bright place in the vicinity of the wall surface 3 2 may cause the linear lightning ray 28 not to be reflected on the wall surface 32. Even in the case where the above-described lightning ray 28 cannot be reflected to the wall surface 3 2, the laser spot 10 on which the light is concentrated can be presented on the wall surface 32. [Patent Document 1] JP-A-2000-28359 [Summary of the Invention] -5-200819708 [Problems to be Solved by the Invention] The laser head 1 2 for emitting laser light in the vertical direction is oriented from a horizontal plane toward about 35 degrees. The elevation angle is mounted on the laser line 1 〇. The ray 28 irradiated from the laser head 12 mounted on the laser rayometer 10 at an elevation angle of about illuminates the ray at a wide angle of about 140 degrees across the wall surface and the ceiling. On the laser line meter 10, two or more vertical laser heads 12 are generally mounted. The reason why the laser line 10 has two vertical direction lasers 12 is as shown in Fig. 5, for example, the first vertical direction of the laser head 1 2 (not shown in Fig. 5) for the front wall surface 3 2 a illuminate the thunder ray 2 8 a, the laser head 1 2 from the second vertical direction is irradiated to the right wall 3 2 b, and the thunder ray 2 8 b ' is drawn in the ceiling 3 4 to make the first ' The intersection of the lightning line 2 8 a and the second lightning ray 2 8 b (large right angle) 3 6 is necessary. The large right angle 3 6 is located directly above the laser line meter. And in order to form a right angle between the intersection angle of the first lightning ray 218a and the second laser beam 28b at the position of the large right angle 3 6 , the installation of the laser rayometer 1 射 for the lens 1 2 for the vertical direction is set. position. As described above, the laser head 1 2 for emitting laser light in the vertical direction is mounted on the laser line meter 1 at an elevation angle of about 35 degrees. Therefore, when the distance from the laser line meter 10 to the front wall surface 32a or the right wall surface 32b is increased, the laser light 30 formed on the first lightning ray 28 8a may appear above the front wall surface 32a or On the ceiling 34. Similarly, the laser spot 3 形成 formed on the second lightning ray 28b appears above the right wall surface 32b or on the ceiling. It is not easy to find the position of the laser spot 30 when the laser spot 30 is present on the wall 32a, 32b with the surface of the head of the mine, and the line of lightning strikes the ground or the ceiling of the 200819708 ceiling. Further, it is difficult to perform the operation of finding the lightning rays 28a and 28b using the laser light receiver, and it is difficult to perform the operation of the ink lines for marking the wall surfaces 32a and 32b. As long as the position of the laser spot 3 〇 appearing on the front wall surface 32a or the right wall surface 32b is lowered to the lower position, it is easy to perform the operation of finding the lightning rays 28 8a, 28b or performing the ink line operation on the wall faces 32a, 32b. Since the position of the laser spot 30 is lowered to the lower side, it is considered that the elevation angle of the laser head 12 that emits the laser light in the vertical direction is lowered by, for example, about 8 degrees from 35 degrees. However, when the elevation angle of the laser head 12 is decreased, the line at the intersection (large right angle) 36 of the first lightning ray 28a and the second lightning ray 28b at the ceiling becomes very dark and unrecognizable. SUMMARY OF THE INVENTION The present invention is directed to providing a laser lighter that can reliably present a large right angle of a ceiling while presenting a laser spot appearing on a lightning ray near the eye level of the operator on the wall. Another object of the present invention is to facilitate the alignment of the laser spot with the lightning ray when the laser spot is deflected from the lightning ray. [Means for Solving the Problem] The laser head for a laser light device according to the present invention includes a laser light meter, and includes: a casing; a light source; a lens unit; and the laser light passing through the lens unit from the light source a lightning ray generating means for illuminating the object by means of a thunder ray; and arranging the laser beam from the light source through the lens unit to illuminate the laser spot by the laser beam at a position adjacent to the thunder ray generating means In the laser head, a reflection means for changing the direction of the laser beam by the above-described laser spot generating means is attached to the casing. The present invention is characterized in that a space is formed in the outer casing in which the laser spot generating means is adjacent to the thunder ray generating means, and the space is provided with the reflecting means. The present invention is characterized in that the above-described outer casing is capable of holding the above-described lightning ray generating means so as to be freely displaceable, and the outer casing is provided with two adjusting means for displacing the position of the thunder ray generating means. The present invention is characterized in that the holding means for holding the above-mentioned outer ray generating means in a state in which the above-described ray generating means is detachably held by the outer casing is formed by a material which is displaced by the external force by the holding means. The present invention is characterized in that an internal thread is formed in the outer casing to form an external thread that locks the adjusting means and the internal thread. [Effect of the Invention] In the present invention, in the laser head in the vertical direction, the angle of the laser light showing the laser spot is changed by the reflection means, and the laser spot is lowered to the lower side. For example, it is possible to form a laser spot at a predetermined height (e.g., a height of about 1.5 meters) which is about 1 m away from the laser ray meter. Thereby, the laser spot is presented at the height of the approximate eye of the wall, and the laser spot can be easily found, and the ink line operation time for the wall surface can be greatly shortened as compared with the prior art. Since the direction of the laser spot is changed by means of reflection, there is a point at which the spot of the laser is deflected from the thunder, and it must be adjusted to align the spot with the thunder. Therefore, the reflection means is fixed on the outer casing, and the lightning radiation is held on the outer casing in a freely displaceable manner, and the position and angle of the thunder ray generating means with respect to the outer casing are finely adjusted by two adjustment means. Thereby, the laser spot can be easily aligned on the lightning ray in a short time. [Embodiment] The present invention will be described below with reference to the drawings. Fig. 1 is a cross-sectional view showing a laser head for a laser light meter according to the present invention. The same reference numerals in Fig. 1 as those in Fig. 3 denote the same members. Two of the laser heads 40 for the vertical direction of the present invention are mounted on the laser line meter 1 。. Further, the laser head 1 is also mounted with a laser head for horizontal direction, and the description thereof is omitted here. The laser head 40 is a semiconductor laser 14 as a light source; the complex lenses 16a, 16b, and 16c constitute a lens unit 18 for collecting light; and the laser light from the semiconductor laser 14 is linearly irradiated on a wall surface or the like. a rod lens 20 for using a thunder ray generating means; a first outer casing 22 for holding the semiconductor laser 14 and the lens unit 18; a second outer casing 24 for holding the rod lens 20; and an adjacent rod in the second outer casing 24 The lens 20 is formed as a slit or space 26 for irradiating laser light from the semiconductor laser 14 in a spot shape to a laser spot generating means for a wall surface or the like. It is also possible to provide transparent glass or the like in the slit or space 26 to prevent dust from entering. The configuration of the above-described laser head 40 is the same as that of the laser head 12 shown in Fig. 3. In the laser head 40 of the present invention, the space 26 is provided with a mirror 42 as a means for reflecting the angle of the laser light passing through the space 26. The angle of incidence of the mirror 42 relative to the normal is the same angle as the angle of reflection and the angle of incidence and reflection is less than 90 degrees from the angle of -9-200819708. The mirror 42 is used to change the angle of the laser light that exits the laser spot, and changing the angle reduces the height reduction of the laser spot 44 that is incident on the wall 32. Even when the distance from the laser rayometer 10 to the front wall surface 32a or the right wall surface 32b is increased, the position and angle of the mirror 42 can be adjusted, as shown in Fig. 5, which shows the first ray formed in the vertical direction. The laser spot 44 on the ray 2 8 a or the laser spot 44 formed on the second ray 218 8b in the vertical direction can be made sufficiently by the laser spot 30 presented by the conventional laser head 12. Reduce the presentation. By adjusting the position and angle of the mirror 42, the distance from the laser line 10 is separated by about 10 meters (the distance can be appropriately set according to the needs thereof) in the front wall 3 2a or the right wall 32b. Presented near the height of the operator's eyes (a height of about 1.25 meters). As described above, since the laser spot 44 formed on the lightning ray in the vertical straight line can be presented at the eye height of the wall surface, even if the thunder ray cannot be seen, the position of the laser spot 44 can be easily found, and the laser light receiving is used. The device detects the thunder rays and facilitates the ink line operation. In the above description, the mirror 4 is used as the reflecting means for changing the reflection angle of the laser spot 44 irradiated on the wall surface 3 2, but the mirror may be replaced by a mirror instead of the mirror 42. With the refraction of the crucible, the laser spot 4 4 formed on the Ray ray 28 in the vertical direction can also be present near the height of the eye of the worker on the front wall 32a or the right wall 32b. According to the present invention, the reflection means includes 稜鏡, and the "reflection of light" includes "refraction of light using 稜鏡". -10- 200819708 Laser light that emits a laser spot 44 is in the laser head 40 of the present invention, and the direction of the change is changed midway by the mirror 42. Therefore, the laser spot 44 will have doubts that it cannot be aligned with the lightning ray 28. In the case where there is no laser spot 44 on the lightning ray 28, when the distance from the laser illuminator 10 to the wall surface 3 2 is short, the laser spot 44 appears on the thunder ray 28, but the laser ray illuminator 1 〇 As the distance to the wall surface 3 2 increases, the laser spot 44 deviates significantly from the thunder ray 28. The laser spot 44 is not in the field of the thunder ray 28, and even if a laser receiver is used, the thunder ray 28 cannot be simply found. The angle of the laser light that emits the laser spot 44 is changed for the mirror 42, so that the mounting angle with respect to the mirror 42 of the second casing 24 is adjusted, and then the mirror 42 is fixed to the second casing 24 with an adhesive. However, when the mirror 42 is fixed to the second outer casing 24 with an adhesive, the mounting angle with respect to the second outer casing 24 is also changed, resulting in a problem that the laser spot 44 is not aligned with the laser line 28. In order to eliminate this problem, the angle of the rod lens 20 with respect to the second outer casing 24 is adjusted instead of adjusting the angle of the mirror 42. As shown in Fig. 1 and Fig. 2, both ends in the longitudinal direction of the rod lens 20 are sandwiched by a receiving member 46 as a holding means and a pressing member 48. It can be formed by a flexible material that displaces at least one of the receiving member 46 and the pressing member 48 as a holding means by an external force. Two holes 50 reaching the side faces of the rod lens 20 are formed in the second outer casing 24, and internal threads 52 are formed in the inner walls of the holes 50. The inner thread 52 latches the external thread 54 as an adjusting means, and at least one of the two external threads 54 is pressed against the rod lens 20 to adjust the angle with respect to the rod lens 2 of the second outer casing 24. Forming the top of the front end of the external thread 54 into a circle -11 - 200819708-shaped conical shape facilitates fine adjustment of the angle of the rod lens 20 and does not damage the rod lens. The axial direction (γ) of the two external threads 5 4 is parallel to each other, and the axial direction (z) of the rod lens 20 is set to be offset. Thereby, the position and angle of the rod lens 20 with respect to the second outer casing 24 can be adjusted by the two external threads 54, and the laser spot can be easily aligned with the lightning ray. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a laser beam transfer head according to the present invention. Fig. 2 is a perspective view showing an angle adjusting mechanism of a rod lens. Figure 3 is a cross-sectional view of a conventional ink line transfer laser head. Fig. 4 is a view showing the positional relationship between the rod lens and the space displayed in the direction A of Fig. 3; Fig. 5 is a perspective view showing a lightning ray and a laser spot irradiated by a laser rayometer. [Main component symbol description] 1 0 : Laser ink meter 1 4 : Semiconductor laser 1 8 : Lens unit 2 0 : Rod lens 22 : First case 2 4 : Second case 2 6 : Space -12 - 200819708 2 8: Ray ray 2 8a First lightning ray 28b Second lightning ray 32: Wall surface 4 0: Laser head 4 2: Mirror 4 4: Laser spot 46: Support member 4 8 : Pressing member 5 2 : Internal thread 5 4 : external thread