灯头座可自由伸绾大范围调整照射角度的嵌入式灯具技术领域本实用新型涉及灯具技术领域，尤其是一种灯头座可以伸缩以大范围调整照射角度的嵌入式灯具。 Lampholder projecting freely York large irradiation angle range adjustment recessed light fixture BACKGROUND Technical Field The present invention relates to a lamp, in particular a lampholder may be telescopically adjusted in a wide range of irradiation angle recessed light fixture. 背景技术目前，市场上现有可以调整照射角度的嵌入式灯具， 一般包括安装有光源的灯头座，灯头座通过连接轴与外环或灯盒连接并可以以连接轴为轴心与外环或灯盒发生相对转动，灯头座或外环固定在灯盒内，灯头座不可以相对灯盒伸缩调整，其照射角度一般在左右方向30°以内„如附图的圏1和图2所示，现有嵌入式灯具是将外环31用拉钉及钟钉21國定在灯盒11上，外环31固定后只能作旋转运动，无法作上下运动，当灯头座旋转的角度较大时光源的光线会被灯盒遮挡，影响灯具的照明效果，限制了灯具的使用范围。 实用新型内容针对以上现有嵌入式灯具的不足，本实用新型的目的是提供一种可以上下伸缩调整灯头座，以增大灯光照射角度，扩大照明范围的嵌入式灯具。本实用新型的目的是通过采用以下技术方案来实现的：灯头座可自由伸缩大范围调 BACKGROUND Currently, existing on the market can adjust the irradiation angle recessed light fixture, generally comprising a light source mounted in the lamp base, lampholder or a lamp connected to the outer cartridge by a connecting shaft and the axis may be connected to the outer ring or shaft lamp cartridge relative rotation, the outer ring is fixed in the lampholder or within the lamp box, not lampholder lamp cartridge telescopic adjustment relative to the radiation angle in the horizontal direction is generally 30 ° "as the rings of the drawings FIG 1 and FIG 2, existing lamp is embedded with the outer pull stud 31 and the clock on the nails of 21 set in the lamp box 11, only the outer race 31 is fixed for rotation, not up and down movement, when the angle of rotation of the lampholder when the light source is large the light will be blocked lamp cartridge, effect lamp lighting effects, limiting the use of the lamp. SUMMARY deficiencies of the above prior recessed light fixture, object of the present invention is to provide a lampholder vertical telescopic adjustment, . to increase the light irradiation angle, illumination range expansion recessed light fixture of the present invention the object is achieved by the following technical scheme: the lampholder may be extendable wide-range dimming 整照射角度的嵌入式灯具，包括安装有光源的灯头座，灯头座通过连接轴与外环或灯盒连接并可以以连接轴为轴心与外环或灯盒发生相对转动，所述灯头座还与伸缩装置相连接，使得灯头座可以与外环或灯盒发生相对位移。作为本实用新型的优逸技术方案，所述伸缩装置包括后盖、滑动导槽、滑动國定支架、压力弹簧、滑动件和圆铁片，后盖与滑动导槽连接和國定，滑动件和压力弹簧设在滑动固定支架内并通过螺丝固定在圆铁片上，滑动件卡设在滑动导槽内，并通过压力弹簧使滑动件与滑动导槽保持一定的摩擦力以承受灯头座的重力不致使其下滑。作为本实用新型的优逸技术方案，所述滑动导槽还与灯盒连接。作为本实用新型的优选技术方案，所述滑动导槽为冷轧钢板制成，滑动件为塑胶制成。本实用新型的有益效果是：相对于现有技术，嵌入式 Embedded whole lamp irradiation angle, comprising a light source mounted in the lampholder, the lampholder is connected to the outer ring or the lamp cartridge by a connecting shaft and shaft may be connected to the outer ring or the lamp cartridge axis relative rotation, said lampholder also connected to the telescopic device, such displacement may occur relative to the lampholder with the lamp box or the outer ring. as of the present invention preferably Yi aspect, said telescoping means comprises a cover, a slide guide groove, a national slide holder, a pressure spring, the slide member and the round iron sheet, back cover and the slide guide groove connection and a national, slider and a compression spring disposed within the sliding mounting bracket by screws fastened round iron sheet, the slide card is provided in the slide guide groove, and by the pressure the slider spring and the sliding guide groove to maintain a certain friction to bear the lampholder gravity without falling it. as the present invention preferably Yi aspect, the slide guide groove is also connected to the lamp cartridge. as the present invention preferred aspect, the slide guide grooves are cold-rolled steel sheet, made of plastic for the sliding member of the present invention has the advantages that: with respect to the prior art, embedded 具的灯头座通过伸縮装置可以与灯盒发生相对位移，灯头座拉出灯盒后可以大范围调整灯具照射角度，克服了目前市场上现有同类产品照射角度较小的缺陷；本实用新型结构简单、使用方便，增大了灯光的照射角度，扩大了灯具的照明范圃。 附困说明下面结合附图与具体实施例对本实用新型作进一步说明：图i是现有嵌入式灯的结构示意图；图2是现有嵌入式灯的側视结构示意图； 图3是本实用新型的立体结构示意图； 图4是本实用新型的主视结构示意图； 图5是本实用新型的拆分结构示意图。 具体实施方式如图3、图4和图5所示，灯头座可自由伸縮大范围调整照射角度的嵌入式灯具，包括安装有光源的灯头座8，灯头座8通过连接轴与灯盒9连接并可以以连接轴为轴心与灯盒9发生相对转动，灯头座8还与伸缩装置相连接，使得灯头座8可以与灯盒9发生相对 With the seat base relative displacement can occur by means of a telescopic lamp cartridge, pull out the lamp cartridge lampholder can adjust a large range of irradiation angle lighting to overcome similar products available on the market irradiation angle smaller defects; structure of the present invention simple, easy to use, increasing the angle of illumination light, expansion of the attachment fixture according Po Mingfan trapped examples further illustrate specific embodiments in conjunction with the accompanying drawings illustrate the present invention for the following: Figure i is a schematic diagram of the conventional built-in lamp ; FIG. 2 is a schematic side view of the structure of a conventional built-in lamp; FIG. 3 is a structural diagram of the new perspective the present invention; FIG. 4 is a schematic view of the new structure of the present invention a front view; FIG. 5 is a schematic view of the present invention novel split structure. DETAILED DESCRIPTION FIGS. 3, 4 and 5, the lampholder may be extendable wide irradiation angle adjustment recessed light fixture, comprising a light source mounted in the lamp base 8, the lampholder through the connecting shaft 8 is connected to the lamp cartridge 9 and may be connected to the lamp axis as the axis of the cartridge 9 relative rotation, the base housing 8 is further connected to the telescopic means 8 can take place such that the lampholder with the lamp relative to the cartridge 9 位移„伸缩装置包括后盖l、滑动导槽3、滑动國定支架4、压力弹簧5、滑动件6和圆铁片7，后盖1与滑动导槽3连接和固定， 滑动件6和压力弹簧5设在滑动固定支架4内并通过螺丝2固定在圆铁片7上， 滑动件6卡设在滑动导槽3内，并通过压力弹簧5使滑动件6与滑动导槽3保持一定的摩擦力以承受灯头座8的重力不致使其下滑，滑动导槽3与灯盒9连接。 Displacement "L telescopic device comprises a cover, a slide guide groove 3, a national slide holder 4, the compression spring 5, the slide member 6 and the circular iron plate 7, the rear cover 13 is connected to the slide guide groove and secured, the slide member 6 and a pressure spring 5 provided on the sliding mounting bracket 4 by a screw 2 is fixed on a round iron sheet 7, the slide member 6 cards disposed within the sliding guide grooves 3 and the sliding member by the pressure spring 563 to maintain a certain friction against the slide guide groove to withstand the force of gravity 8 of the lampholder so as not to fall, slide guide groove 3 is connected with the lamp box 9. 本实施例中，滑动导槽3为冷轧钢板制成，滑动件6为塑胶制成。 In this embodiment, the slide guide groove 3 is made of cold-rolled steel sheet, the slide member 6 is made of plastic. 本实用新型灯头座8 ^L伸縮动作时， 一个人就可以搡作，操作人员一只手抓住灯头座8轻轻往下拉即可将灯头座8拉出灯盒9，拉出后灯头座8可以大范围调整其照射角度，灯头座8的照射角度可达左右方向160度，圃周方向旋转350度。 The present invention when the lamp base 8 ^ L telescoping action, as a person can push the operator with one hand to gently grasp the lamp base 8 Pull down to the seat base 8 is pulled out the lamp cartridge 9, the pull-out lampholder 8 may adjust a wide range of radiation angle, the irradiation angle of the seat base 8 up to about 160 degrees direction, the direction of rotation 350 of the circumferential garden.