200540365 (1) 九、發明說明 【發明所屬之技術領域】 本發明係關於安裝於建築物等的天花板等而被設置的 照明器具，特別是，適於照明3〜7公尺左右的下方之地 面的崁燈之安裝照明器具。 【先前技術】 φ 以往，做爲具有光源燈泡及使光源燈泡的光反射之反 射板的照明器具之反射板，一般係使用半球狀的物品。 但是，在半球狀的反射板，因爲光源燈泡的光互相干 擾，使光無法到達遠處，所以如桌上的枱燈等般，照明數 十公分左右的下方時沒有問題，但是如被設置於工場及辦 公室的天花板之崁燈般，想要照明3〜7公尺左右的下方 之地面的話，則會有照明度不足的問題。並且，在半球狀 的反射板，也可見在該內面上部設置細小的凹凸，使光亂 φ 反射，而使照明度提昇之改良，但藉此想要照明3〜7公 尺左右的下方之地面的話，則會有照明度不足的問題。 針對於此，硏究出將反射板的內面作成多面體，使被 反射的光之到達性提昇，但是在具有單一的傾斜角度之1 段的多面體，因爲不能控制光的反射方向，所以無法平均 地照明大範圍。 因此，本發明的申請人，之前在專利文獻1，提出由 各個傾斜角度不同的上下2段之傾斜部形成內面的反射板 。利用此2段構造的反射板，藉由調整上下的傾斜部之傾 200540365 (2) 斜角度以使光反射，而可以照明大範圍。 專利文獻1 :日本特開2003 - 1 5 1 3 1 0號公報 【發明內容】 〔發明所欲解決之課題〕 但是，在上述2段構造的反射板，因爲來自兩側的傾 斜部之反射光係交叉般進行，所以若想要照明大範圍，則 φ 會產生崁燈正下方的中心部之照明度不足的新問題。因此 ，針對於確保必須的中心部之照明度（標準爲200 lx左右 )，必須要複數設置光源燈泡，或使用輸出功率大的光源 燈泡。 更且，上述專利文獻1的反射板，爲了讓反射效率變 好而將內面作成16面體，但是也會有在照明的下方之地 面出現16面體的緣部之陰影的問題。 因此，本發明所欲解決之課題，爲提供一種可大範圍 Φ 地照明3〜7公尺左右的下方之地面，而且不會招致中心 部的照明度降低，而可平均地照明整體的照明器具。 其他的課題，爲提供一種可以實質上消除反射板的緣 部之陰影的照明器具。 更進一步的其他之課題，爲提供一種爲了得到必須的 照明度，可以比以往的光源燈泡之個數變少’或者光源燈 泡的輸出功率變小之照明器具。 〔用以解決課題之手法〕 -5- 200540365 (3) 本發明爲在具有光源燈泡、及爲使光源燈泡的光反射 ，而將內面作成鏡面狀之反射板的照明器具，由各個傾斜 角度不同的上下3段以上之傾斜部形成上述反射板的內面 者。 反射板的內面，爲了使反射效率提昇，並且實質上消 除反射板的緣部之陰影，最好作成18面體以上的多面體 ，由於製造成本或製造技術上的限制，最好爲24面體以 φ 下的多面體。再者，雖然反射效率會有些許降低，但也可 以依據設置場所等的條件，將內面作成球面狀（曲面狀） 而且，即使是爲了得到必須的照明度，在以往的半球 狀或2段構造的反射板，必須有複數的光源燈泡之情形， 在本發明，因爲採用上述般3段構造之反射板，所以可以 節省光源燈泡的個數及輸出功率，而擴大可以使用單一的 光源燈泡之範圍。 更且，爲了使光的反射方向之控制變得容易，光源燈 泡最好爲鹵化金屬燈（CDM )般具有單一的點狀發光體型 式者。 〔發明的效果〕 在本發明的照明器具，因爲由各個傾斜角度不同的上 下3段以上之傾斜部形成反射板的內面，所以藉由調整各 傾斜部的傾斜角度，可以精密地調整光源燈泡的光之反射 方向。因此，藉由單一的光源燈泡，可以確保中心部的照 -6 - 200540365 (4) 明度，並可以照明大範圍，又可以減少光源燈泡的個數， 或可以是小的輸出功率。藉此，在多數的情形，可以將光 源燈泡作成單一，能夠大幅地削減使用電力量，發熱量減 少，而可以使建築物內的空調效率等提昇。 而且，藉由將反射板的內面作成18面體〜24面體之 多面體，以提昇反射效率，並且可以實質上消除以往出現 在照明的地面之反射板的緣部之陰影。 【實施方式】 〔發明之最佳實施形態〕 以下，根據顯示在適用於崁燈的附加圖之實施例來具 體地說明本發明。 第1圖，爲以剖面顯示關於本發明的崁燈之第1實施 例，第2圖，爲顯示使用於第1圖的崁燈之反射板，（a )爲底面圖、（b)爲正面圖。 # 顯示於第1圖的崁燈1〇，具備由鹵化金屬燈（CDM ) 所組成的光源燈泡1、及供使光源燈泡1的光反射用之反 射板2、及固定反射板2的本體部3。 光源燈泡1，被裝設在反射板2的頂蓋部份，被安裝 於未圖示的插座而位於反射板2內。 反射板2，如第2圖所示般由底面形狀（橫剖面形狀 )爲正18角形的傘狀之18面體所組成，該內面，由以各 個傾斜角度不同的第1傾斜部2a、第2傾斜部2b及第3 傾斜部2c組成的上下3段之傾斜部所形成。反射板2的 200540365 (5) 大小及各傾斜部2a〜2c的傾斜角度及長度，依據設置崁 燈1 0的場所之天花板高度及照明範圍等的條件而被適當 設定。 反射板2的原料爲鋁，該內面的反射面，藉由在鋁的 表面塗抹鈦•矽，而成爲鏡面狀。做爲反射板的原料並不 限於鋁，例如也可以使用金屬板並將內面做鏡面加工。 本體部3，在該下端部外周具有突出於外方的環狀之 • 支撐構件3a，藉由將此支撐構件3a載置於天花板T的背 面，使崁燈10整體被懸掛於天花板T的背面。 在支撐構件3a的內周側，可裝脫地安裝有著色環3b 。此著色環3b係由被塗成所要求的顏色之半透明的塑膠 所組成，塗成來自光源燈泡1的光之所要求的顏色，而使 新式樣性提昇者。 在著色環3b的下方，根據需求，安裝下部反射板3c 。此下部反射板3c，爲供往天花板T反射來自光源燈泡 • 的光用者，藉由使用下部反射板3c，可以使天花板T變 亮，而可以用該間接照明來照亮地面。下部反射板3c，爲 了散熱，而在中央部被形成爲開孔的環狀。 第3圖，爲模式地顯示來自利用反射板2的光源燈泡 1之光的反射狀況（只有左側）。如此圖所示般，來自光 源燈泡1的光線，用反射板2內面的第1〜第3傾斜部2a 〜2c反射。第1〜第3傾斜部2a〜2c，因爲如上述般具有 不同的傾斜角度，所以光的反射角度也各個都不同，藉由 適當調整第1〜第3傾斜部2a〜2c傾斜角度及長度，可以 -8- 200540365 (6) 精密地調整光源燈泡1的光之反射方向，而可以確保中心 部的照明度，並可以照明大範圍。 例如，在使用下端部的開口寬度爲3 80公釐的反射板 之崁燈1 〇，藉由調整上下3段的傾斜部之傾斜角度及長度 ，如第4圖所示般，在天花板高度爲7公尺的工場，以7 公尺間隔設置崁燈10，可以用必須照明度（200 lx左右 )照明地面全部。此時，不會發生用以往的2段構造之反 φ 射板所發生的中心部之照明度降低，也不會看到反射板的 緣部之陰影。再者，在第4圖的光之反射方向，只顯示了 二個崁燈1 〇的相對向側。 如此，藉由在反射板的內面設置上下3段以上的傾斜 部，使光的反射方向之調整自由度變高，即使藉由1個的 光源燈泡，也可以確保中心部的照明度，並可以照明大範 圍。因此，可以用1個光源燈泡來維持在以往的反射板需 要3個光源燈泡的情形。 • 第5圖，爲以剖面顯示關於本發明的崁燈之第2實施 例。此圖在與第1實施例相同或相對應的構成附加相同的 符號，故省略該說明。 本實施例，做爲光源燈泡1，係爲使用整體發光的螢 光燈者。在本實施例，也是藉由調整第1〜第3傾斜部2a 〜2c的傾斜角度及長度，而可以確保中心部的照明度，並 可以用必須的照明度來照明必須的範圍，因此，可以用1 個光源燈泡來維持在以往的反射板需要3個光源燈泡的情 形0 -9- 200540365 (7) 第6圖，爲以剖面顯示關於本發明的崁燈之第3實施 例。此圖在與第1實施例相同或相對應的構成附加相同的 符號，故省略該說明。 本實施例，係爲使用二支螢光燈組成的光源燈泡1者 。如此，在想提高照明度時，可以使用複數的光源燈泡1 。然後，在本實施例，也是藉由調整第1〜第3傾斜部2a 〜2c的傾斜角度及長度，而可以確保中心部的照明度，並 Φ 可以照明必須的範圍，因爲比使用以往的半球狀及2段構 造的反射板時，更能提高照明度，所以可以削減使用電力 量。具體而言，可以用2支光源燈泡來維持在以往的反射 板需要4〜5支光源燈泡的情形。 〔產業上的利用可能性〕 本發明，不僅是做爲被安裝於天花板的崁燈，也可以 利用做爲安裝於牆面、地面的照明器具。 【圖式簡單說明】 第1圖，爲以剖面顯示關於本發明的崁燈之第1實施 例。 第2圖，爲顯示使用於第1圖的崁燈之反射板，（a )爲底面圖、（b)爲正面圖。 第3圖，爲模式地顯示來自利用反射板的光源燈泡之 光的反射狀況（只有左側）。 第4圖，爲顯示關於本發明的崁燈之設置例。 10- 200540365 (8) 第5圖，爲以剖面顯示關於本發明的崁燈之第2實施 例。 第6圖，爲以剖面顯示關於本發明的崁燈之第3實施 例。 【主要元件符號說明】 1 :光源燈泡 0 2 :反射板 2a :第1傾斜部 2b ;第2傾斜部 2c :第3傾斜部 3 :本體部 3a :支撐構件 3b :著色環 3c :下部反射板 -11 -200540365 (1) IX. Description of the invention [Technical field to which the invention belongs] The present invention relates to a lighting device installed on a ceiling of a building or the like, and is particularly suitable for lighting a floor below about 3 to 7 meters. The installation of lighting equipment. [Prior art] φ In the past, hemispheres were generally used as the reflector of a lighting fixture having a light source bulb and a reflector that reflects the light from the light source bulb. However, in a hemispherical reflector, the light from the light source bulbs interferes with each other, making it impossible to reach the distance. Therefore, like a desk lamp on the table, there is no problem when it is illuminated below the tens of centimeters. Like the ceiling lights of the office ceiling, if you want to illuminate the floor below about 3 to 7 meters, there will be a problem of insufficient illumination. In addition, in the hemispherical reflecting plate, it is also seen that a small unevenness is provided on the inner surface to reflect light chaos φ and improve the illumination. However, I want to illuminate the lower part of the 3 to 7 meters. On the ground, there is a problem of insufficient illumination. In view of this, it has been found that the inner surface of the reflecting plate is made into a polyhedron to improve the reachability of the reflected light. However, in a polyhedron with a single tilt angle of one segment, the direction of light reflection cannot be controlled, so it cannot be averaged. Large range of ground lighting. Therefore, the applicant of the present invention has previously proposed in Patent Document 1 that a reflection plate having an inner surface is formed by inclined portions of two upper and lower stages having different inclination angles. With this two-stage structure of the reflector, it is possible to illuminate a large area by adjusting the inclination of the upper and lower slopes 200540365 (2) The angle of inclination to reflect light. Patent Document 1: Japanese Patent Application Laid-Open No. 2003-1 5 1 3 1 10 [Summary of the Invention] [Problems to be Solved by the Invention] However, in the reflecting plate having the two-stage structure described above, reflected light from the inclined portions on both sides is reflected The cross-like process is performed, so if a large range of illumination is desired, φ will cause a new problem of insufficient illumination in the central portion directly below the cymbal lamp. Therefore, in order to ensure the required central illuminance (the standard is about 200 lx), a plurality of light source bulbs must be installed, or a light source bulb with a large output power must be used. Furthermore, the reflector of Patent Document 1 mentioned above has a hexahedron in order to improve the reflection efficiency. However, there is also a problem that shadows at the edges of the hexahedron appear on the ground below the illumination. Therefore, the problem to be solved by the present invention is to provide a lighting device that can illuminate the ground below 3 to 7 meters over a wide range of Φ, and does not cause a decrease in the illuminance at the center, and can evenly illuminate the entire lighting equipment. . Another problem is to provide a lighting device which can substantially eliminate the shadow of the edge portion of the reflecting plate. A still further problem is to provide a lighting device that can reduce the number of light source bulbs or the output power of a light source bulb in order to obtain the required illuminance. [Methods to Solve the Problem] -5- 200540365 (3) The present invention is a luminaire having a light source bulb and a reflecting plate whose inner surface is made into a mirror surface in order to reflect the light of the light source bulb. Different inclined portions of three or more steps form the inner surface of the reflecting plate. In order to improve the reflection efficiency on the inner surface of the reflecting plate and substantially eliminate the shadow of the edge of the reflecting plate, it is best to make a polyhedron with an 18-hedron or more. Due to the limitation of manufacturing cost or manufacturing technology, a 24-hedron Polyhedron under φ. In addition, although the reflection efficiency may be slightly reduced, the inner surface can be made spherical (curved) depending on the conditions such as the installation location. Moreover, even to obtain the required illumination, the conventional hemisphere or two-stage The structure of the reflective plate must have a plurality of light source bulbs. In the present invention, because the three-stage structure of the reflective plate is used as described above, the number of light source bulbs and the output power can be saved, and a single light source bulb can be expanded. range. Furthermore, in order to make it easier to control the direction of light reflection, the light source bulb is preferably one having a single point-like light emitting type like a metal halide lamp (CDM). [Effects of the Invention] In the luminaire of the present invention, since the inner surface of the reflecting plate is formed by inclined portions having three or more upper and lower steps having different inclination angles, the light source bulb can be precisely adjusted by adjusting the inclination angle of each inclined portion. Direction of light reflection. Therefore, with a single light source bulb, the light at the center can be ensured. (4) Brightness can be widened, and the number of light source bulbs can be reduced, or the output power can be small. As a result, in many cases, the light source bulb can be made into a single unit, which can greatly reduce the amount of power used, reduce the amount of heat generated, and improve the air conditioning efficiency in the building. In addition, the inner surface of the reflecting plate is made into a polyhedron of 18-hedron to 24-hedron to improve the reflection efficiency, and it is possible to substantially eliminate the shadow of the edge of the reflecting plate that has conventionally appeared on the illuminated floor. [Embodiment] [Best Embodiment of the Invention] Hereinafter, the present invention will be specifically described with reference to an example shown in an additional drawing applied to a chandelier. Fig. 1 shows a first embodiment of a chandelier according to the present invention in a cross section, and Fig. 2 shows a reflection plate used in the chandelier in Fig. 1, (a) is a bottom view, and (b) is a front view. Illustration. # The cymbal lamp 10 shown in FIG. 1 includes a light source bulb 1 composed of a metal halide lamp (CDM), a reflection plate 2 for reflecting light from the light source bulb 1, and a body portion for fixing the reflection plate 2. 3. The light source bulb 1 is installed in the top cover portion of the reflecting plate 2 and is installed in a socket (not shown) and is located in the reflecting plate 2. As shown in FIG. 2, the reflecting plate 2 is composed of an umbrella-shaped 18-hedron with a bottom surface shape (cross-sectional shape) of a regular 18-angle shape, and the inner surface is composed of first inclined portions 2a, which are different in inclination angle, The second inclined portion 2b and the third inclined portion 2c are formed by three upward and downward inclined portions. 200540365 (5) The size of the reflecting plate 2 and the inclination angle and length of each of the inclined portions 2a to 2c are appropriately set according to conditions such as the ceiling height and lighting range of the place where the 崁 lamp 10 is installed. The material of the reflection plate 2 is aluminum, and the reflection surface on the inner surface is coated with titanium and silicon on the surface of aluminum to become a mirror surface. The material of the reflecting plate is not limited to aluminum. For example, a metal plate may be used and the inner surface may be mirror-finished. The main body portion 3 has a ring-shaped support member 3a protruding outward from the outer periphery of the lower end portion. By placing this support member 3a on the back surface of the ceiling T, the entire beacon 10 is suspended from the back surface of the ceiling T . A coloring ring 3b is detachably attached to the inner peripheral side of the support member 3a. The coloring ring 3b is composed of a translucent plastic coated with a desired color, and is coated with a required color of light from the light source bulb 1, thereby improving the new style. Below the coloring ring 3b, a lower reflecting plate 3c is installed as required. This lower reflecting plate 3c is for the user who reflects the light from the light source bulb to the ceiling T. By using the lower reflecting plate 3c, the ceiling T can be brightened, and the ground can be illuminated with the indirect lighting. The lower reflecting plate 3c is formed in a ring shape with an opening in the central portion for heat dissipation. Fig. 3 schematically shows the reflection of light from the light source bulb 1 using the reflecting plate 2 (only the left side). As shown in the figure, the light from the light source bulb 1 is reflected by the first to third inclined portions 2a to 2c on the inner surface of the reflecting plate 2. The first to third inclined portions 2a to 2c have different inclination angles as described above, so the light reflection angles are also different. By appropriately adjusting the inclination angle and length of the first to third inclined portions 2a to 2c, -8- 200540365 (6) The direction of light reflection from the light source bulb 1 can be adjusted precisely, while ensuring the illuminance at the center, and a large area can be illuminated. For example, in the case of using a chandelier lamp 10 with a reflecting plate having an opening width of 3 80 mm at the lower end portion, as shown in FIG. 4, by adjusting the inclination angle and length of the inclined portion in the upper and lower stages, as shown in FIG. 4, the ceiling height is In the 7-meter workshop, the cymbal lamps 10 are set at 7-meter intervals, and the entire floor can be illuminated with the necessary illumination (about 200 lx). At this time, the central part of the radiating plate with the conventional two-stage structure does not suffer from a decrease in illuminance, and shadows at the edges of the reflecting plate are not seen. Furthermore, in the light reflection direction in FIG. 4, only the opposite sides of the two cymbal lamps 10 are shown. In this way, by providing an inclined portion of three or more steps on the inner surface of the reflecting plate, the degree of freedom in adjusting the reflection direction of light is increased, and even with a single light source bulb, the brightness of the central portion can be ensured, and Can illuminate a wide range. Therefore, one light source bulb can be used to maintain the situation where the conventional reflector requires three light source bulbs. • Fig. 5 shows a second embodiment of the chandelier according to the present invention in a cross section. In this figure, the same reference numerals are assigned to the same or corresponding components as those in the first embodiment, and therefore the description is omitted. In this embodiment, the light source lamp 1 is a fluorescent lamp that emits light as a whole. In this embodiment, also by adjusting the inclination angles and lengths of the first to third inclined portions 2a to 2c, it is possible to ensure the illuminance at the central portion and to illuminate the necessary range with the necessary illuminance. Therefore, it is possible to One light source bulb is used to maintain a conventional reflector. Three light source bulbs are required. 0 -9- 200540365 (7) Fig. 6 shows a third embodiment of the chirped light according to the present invention in cross section. In this figure, the same reference numerals are assigned to the same or corresponding components as those in the first embodiment, and therefore the description is omitted. This embodiment is a light source bulb 1 using two fluorescent lamps. In this way, when it is desired to increase the illuminance, a plurality of light source bulbs 1 can be used. Then, in this embodiment, also by adjusting the inclination angles and lengths of the first to third inclined portions 2a to 2c, it is possible to ensure the illuminance at the central portion, and Φ can illuminate the necessary range, because it uses more than the conventional hemisphere In the case of a reflective plate with a double-segment structure and a two-stage structure, the illumination can be further improved, so that the amount of power used can be reduced. Specifically, two light source bulbs can be used to maintain a conventional reflector in which four to five light source bulbs are required. [Industrial Applicability] The present invention can be used not only as a chandelier mounted on a ceiling, but also as a lighting fixture mounted on a wall or a floor. [Brief Description of the Drawings] Fig. 1 is a first embodiment showing a chandelier according to the present invention in a cross section. Fig. 2 is a reflection plate showing the chandelier used in Fig. 1, (a) is a bottom view, and (b) is a front view. Figure 3 shows the reflection of light from a light source bulb using a reflector (left side only). Fig. 4 is a diagram showing an example of the installation of the chime lamp of the present invention. 10- 200540365 (8) Fig. 5 shows a second embodiment of the chandelier according to the present invention in a sectional view. Fig. 6 shows a third embodiment of the chandelier according to the present invention in a cross section. [Description of main component symbols] 1: light source bulb 0 2: reflecting plate 2a: first inclined portion 2b; second inclined portion 2c: third inclined portion 3: main body portion 3a: supporting member 3b: colored ring 3c: lower reflecting plate -11-